Handbook of Composites from Renewable Materials, Polymeric Composites
Herausgeber: Thakur, Vijay Kumar; Kessler, Michael R; Thakur, Manju Kumari
Handbook of Composites from Renewable Materials, Polymeric Composites
Herausgeber: Thakur, Vijay Kumar; Kessler, Michael R; Thakur, Manju Kumari
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This unique multidisciplinary 8-volume set focuses on the emerging issues concerning synthesis, characterization, design, manufacturing and various other aspects of composite materials from renewable materials and provides a shared platform for both researcher and industry. The Handbook of Composites from Renewable Materials comprises a set of 8 individual volumes that brings an interdisciplinary perspective to accomplish a more detailed understanding of the interplay between the synthesis, structure, characterization, processing, applications and performance of these advanced materials. The…mehr
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- Produktdetails
- Verlag: Wiley
- Volume 6 edition
- Seitenzahl: 736
- Erscheinungstermin: 10. April 2017
- Englisch
- Abmessung: 257mm x 185mm x 38mm
- Gewicht: 1429g
- ISBN-13: 9781119223801
- ISBN-10: 1119223806
- Artikelnr.: 46003794
- Herstellerkennzeichnung
- Libri GmbH
- Europaallee 1
- 36244 Bad Hersfeld
- 06621 890
- Verlag: Wiley
- Volume 6 edition
- Seitenzahl: 736
- Erscheinungstermin: 10. April 2017
- Englisch
- Abmessung: 257mm x 185mm x 38mm
- Gewicht: 1429g
- ISBN-13: 9781119223801
- ISBN-10: 1119223806
- Artikelnr.: 46003794
- Herstellerkennzeichnung
- Libri GmbH
- Europaallee 1
- 36244 Bad Hersfeld
- 06621 890
layda Duru, Oznur Demir O
uz, Hayriye Oztatl
, Duygu Ceren Ar
kfidan, Hatice Kaya, Elif Donmez and Duygu Ege 5.1 Collagen 107 5.2 Elastin 111 5.3 Silk Fibroin 114 5.4 Chitosan 116 5.5 Chondroitin Sulfate 119 5.6 Cellulose 121 5.7 Hyaluronic Acid 123 5.8 Poly(L-lysine) 126 References 128 6 Application of Hydrogel Biocomposites for Multiple Drug Delivery 139 S.J. Owonubi, S.C. Agwuncha, E. Mukwevho, B.A. Aderibigbe, E.R. Sadiku, O.F. Biotidara and K. Varaprasad 6.1 Introduction 140 6.2 Sustained Drug Release Systems 142 6.3 Controlled Release Systems 143 6.3.1 Half-Life of the Drug Formulation 143 6.3.2 Absorption 143 6.3.3 Metabolism 143 6.3.4 Dosage Size 144 6.3.5 pH Stability and Aqueous Stability of the Drug Formulation 144 6.3.6 Barrier Co-Efficient 144 6.3.7 Stability 144 6.4 Polymeric Drug Delivery Devices 146 6.5 Multiple Drug Delivery Systems 147 6.5.1 Supramolecules and In Situ-Forming Hydrogels 149 6.5.2 Layer-By-Layer Assembly 150 6.5.3 Interpenetrating Polymer Networks (IPNs) 150 6.5.4 Application of Hydrogels for Multiple Drug Delivery 151 6.5.5 Cancer Treatments 151 6.5.6 Diabetes Treatments 152 6.6 Tissue Engineering 153 6.6.1 Self-Healing 154 6.6.2 Molecular Sensing 155 6.7 Conclusion 155 References 155 7 Non-Toxic Holographic Materials (Holograms in Sweeteners) 167 Arturo Olivares-Perez 7.1 Introduction 167 7.2 Sugars as Holographic Recording Medium 168 7.2.1 Classification and Nomenclature 168 7.2.2 Monosaccharides/Glucose and Fructose 169 7.2.2.1 Glucose 169 7.2.2.2 Fructose 171 7.2.2.3 Disaccharides Sucrose 171 7.2.2.4 Polysaccharides, Pectins 174 7.2.2.5 Sweeteners Corn Syrup 175 7.3 Photosensitizers 176 7.3.1 Dyes 177 7.3.2 Dyes as Sensitizers 177 7.4 Sucrose Preparation and Film Generation 179 7.4.1 UV-Visible Spectral Analysis 180 7.4.2 Replication of Holographic Gratings is Sucrose 181 7.4.2.1 Holographic Code 181 7.4.2.2 Soft Mask 181 7.4.2.3 Thermosensitive Properties Through Mask 181 7.4.2.4 Replication 182 7.4.2.5 Diffraction Efficiency 183 7.4.3 Sucrose With Dyes 185 7.4.3.1 Sugar UV-Visible Spectral Analysis 185 7.4.3.2 Holographic Replicas 186 7.4.3.3 DE Sugar Tartrazine and Erioglaucine Dye 187 7.5 Corn Syrup 188 7.5.1 Holographic Replicas of Low and High Frequency 189 7.5.2 DE Corn Syrup 191 7.6 Hydrophobic Materials 192 7.6.1 Hydrophobic Mixture of Pectin Sucrose and Vanilla 192 7.6.2 UV-Visible Spectral Analysis 192 7.6.3 Holographic Replicas 192 7.6.4 DE Hydrophobic Films PSV 193 7.7 PSV with Dyes 194 7.7.1 UV-Visible Spectral Analysis 194 7.7.2 DE Films PSV and Erioglaucine 194 7.8 Pineapple Juice as Holographic Recording Material 195 7.8.1 Characterization of Pineapple Juice 196 7.8.2 Generation of Pineapple Films 196 7.8.3 Replication Technique 196 7.8.4 DE Pineapple Film 196 7.9 Holograms Made with Milk 198 7.9.1 Low-Fat Milk Tests 198 7.9.2 DE Milk Gratings 198 7.9.2.1 Gravity Technique 198 7.9.2.2 Spinner Technical 199 7.10 Conclusions 200 Acknowledgements 200 References 200 8 Bioplasitcizer Epoxidized Vegetable Oils-Based Poly(Lactic Acid) Blends and Nanocomposites 205 Buong Woei Chieng, Nor Azowa Ibrahim and Yuet Ying Loo 8.1 Introduction 205 8.2 Vegetable Oils 207 8.3 Expoxidation of Vegetable Oils 209 8.4 Poly(lactic acid) 211 8.5 Poly(lactic acid)/Epoxidized Vegetable Oil Blends 213 8.5.1 Poly(lactic acid)/Epoxidized Palm Oil Blend 213 8.5.2 Poly(lactic acid)/Epoxidized Soybean Oil Blend 217 8.5.3 Poly(lactic acid)/Epoxidized Sunflower Oil Blend 219 8.5.4 Poly(lactic acid)/Epoxidized Jatropha Oil Blend 220 8.6 Polymer/Epoxidized Vegetable Oil Nanocomposites 223 8.7 Summary 227 References 227 9 Preparation, Characterization, and Adsorption Properties of Poly(DMAEA) - Cross-Linked Starch Gel Copolymer in Wastewater 233 Sudhir Kumar Saw 9.1 Introduction 233 9.2 Experimental Procedure 237 9.2.1 Materials 237 9.2.2 Instrumentation 237 9.2.3 Preparation of Cross-Linked Starch Gel 238 9.2.4 Preparation of Poly(DMAEA) - Cross-Linked Starch Gel Graft Copolymer 238 9.2.5 Determination of Nitrogen 239 9.2.6 Experimental Process of Removal of Heavy Metal Ions 239 9.2.7 Removal of Dyes 240 9.2.8 Recovery of the Prepared Copolymer 240 9.3 Results and Discussion 240 9.3.1 Effect of pH 240 9.3.2 Effect of Extent of Grafting on Metal Removal 242 9.3.3 Effect of Adsorbent Dose Used 243 9.3.4 Effect of Treatment Time on the Metal Removal 243 9.3.5 Effect of Agitation Speed 244 9.3.6 Effect of Temperature 245 9.3.7 Recovery of Starch 247 9.3.8 Removal of Dyes 247 9.3.9 Adsorption Kinetics 248 9.3.10 Adsorption Isotherm 249 9.4 Conclusions 250 Acknowledgement 251 References 251 10 Study of Chitosan Cross-Linking Genipin Hydrogels for Absorption of Antifungal Drugs Using Molecular Modeling 255 Norma Aurea Rangel-Vazquez 10.1 Introduction 255 10.1.1 Polymers 255 10.1.1.1 Properties 256 10.1.2 Natural Polymers 257 10.1.2.1 Chitosan 258 10.1.3 Hydrogels 260 10.1.3.1 Applications 261 10.1.4 Antifungals 261 10.1.4.1 Classification 261 10.1.4.2 Fluconazole 262 10.1.4.3 Voriconazole 263 10.1.4.4 Ketoconazole 263 10.1.5 Molecular Modeling 264 10.2 Methodology 265 10.2.1 Geometry Optimization (
G) 265 10.2.2 Bond Lengths 265 10.2.3 FTIR 267 10.2.4 MESP 269 10.3 Results and Discussions 269 10.3.1 Gibbs Free Energy 269 10.3.2 Bond Lengths 270 10.3.3 FTIR 271 10.3.4 MESP 274 10.3.5 HOMO/LUMO Orbitals 275 10.5.4 Conclusions 281 References 282 11 Pharmaceutical Delivery Systems Composed of Chitosan 285 Livia N. Borgheti-Cardoso, Fabiana T.M.C. Vicentini, Marcilio S.S. Cunha Filho and Guilherme M. Gelfuso 11.1 Introduction 285 11.2 Chitosan Micro- and Nanoparticles 286 11.2.1 Oral Applications 287 11.2.2 Topical Formulations 288 11.2.3 Ocular Delivery Systems 289 11.3 Bioadhesive Chitosan Hydrogels 291 11.3.1 Ocular Gel Formulations 292 11.3.2 Topical Formulations 293 11.4 Chitosan Topical/Transdermal Films 295 11.5 Chitosan as Coating Material to Produce Lipid Capsules, Liposomes, Metallic and Magnetic Nanoparticles 296 11.6 Oral Beads Based on Chitosan for Controlled Delivery of Drugs 298 11.7 Conclusion 300 Acknowledgement 300 References 300 12 Eco-Friendly Polymers for Food Packaging 309 Sweetie R. Kanatt, Shobita. R. Muppalla and S.P. Chawla 12.1 Introduction 309 12.2 Sources of Biopolymers 311 12.2.1 Polymers Extracted from Biomass 311 12.2.2 Polysaccharides 312 12.2.2.1 Starch 312 12.2.2.2 Corn Starch 313 12.2.2.3 Cassava Starch 314 12.2.2.4 Potato Starch 314 12.2.2.5 Konjac Glucomannan 314 12.2.2.6 Starch Modifications 314 12.2.3 Cellulose 315 12.2.3.1 Cellulose Derivatives 316 12.2.4 Gums 316 12.2.4.1 Guar Gum 316 12.2.4.2 Locust Bean Gum 317 12.2.4.3 Gum Arabic 318 12.2.4.4 Pectin 318 12.2.4.5 Chitin and Chitosan 319 12.2.5 Proteins 319 12.2.5.1 Zein 320 12.2.5.2 Wheat Gluten 321 12.2.5.3 Soy Protein 321 12.2.5.4 Whey Protein and Casein 321 12.2.5.5 Collagen 322 12.2.6 Lipids 322 12.2.7 Polymers Obtained from Microbial Sources 323 12.2.7.1 Agar 323 12.2.7.2 Alginate 323 12.2.7.3 Carrageenan 324 12.2.7.4 Gellan 324 12.2.7.5 Pullulan 325 12.2.7.6 Xanthan 325 12.2.7.7 Bacterial Cellulose 326 12.2.7.8 Polyhydroxyalkonates (PHA) 326 12.2.8 Polymers Synthesized from Bio-Derived Monomers 326 12.2.8.1 Polylactic Acid (PLA) 326 12.3 Properties of Biopolymer Packaging Films 327 12.3.1 Physical Properties 327 12.3.1.1 Permeability 327 12.3.1.2 Oxygen Transmission Rate (OTR) 328 12.3.1.3 Water Vapor Transmission Rate (WVTR) 329 12.3.1.4 Carbon Dioxide Transmission Rate (CO2TR) 330 12.3.2 Mechanical Properties 330 12.3.3 Thermal Properties 331 12.3.4 Degradation 332 12.3.4.1 Biodegradation 332 12.4 Composite Films 333 12.5 Bionanocomposites 335 12.6 Methods for Film Processing 335 12.6.1 Casting 336 12.6.2 Extrusion 336 12.6.3 Injection Molding 336 12.6.4 Blow Molding 337 12.6.5 Thermoforming 337 12.6.6 Foamed Products 337 12.7 Applications of Biopolymers in Food Packaging 338 12.7.1 Biodegradable Packaging Material 338 12.7.2 Active Packaging 338 12.7.3 Biopolymers as Edible Packaging 339 12.7.3.1 Edible Coating 339 12.7.3.2 Fruits and Vegetables 340 12.7.3.3 Flesh Foods 341 12.7.3.4 Seafoods 341 12.7.3.5 Meat and Meat Products 341 12.7.3.6 Eggs 341 12.7.3.7 Nuts 342 12.7.3.8 Dairy Products 342 12.7.4 Edible Films 343 12.7.4.1 Fruits and Vegetables 343 12.7.4.2 Flesh Foods 343 12.7.5 Intelligent Packaging 344 12.8 Conclusion and Future Prospects 344 References 345 13 Influence of Surface Modification on the Thermal Stability and Percentage of Crystallinity of Natural Abaca Fiber 353 Basavaraju Bennehalli, Srinivasa Chikkol Venkateshappa, Rama Devi Punyamurthy, Dhanalakshmi Sampathkumar and Raghu Patel Gowdru Rangana Gowda 13.1 Introduction 353 13.2 Materials and Methods 355 13.2.1 Materials 355 13.2.2 Alkali Treatment of Abaca Fiber 355 13.2.3 Acrylic Acid Treatment of Abaca Fiber 356 13.2.4 Acetylation of Abaca Fiber 356 13.2.5 Benzoylation of Abaca Fiber 356 13.2.6 Permanganate Treatment of Abaca Fiber 356 13.2.7 Fourier Transform Infrared Spectroscopy (FTIR) 356 13.2.8 Thermogravimetric Analysis (TGA) 356 13.2.9 X-Ray Diffraction Analysis (XRD) 357 13.3 Results and Discussion 357 13.3.1 Chemical Treatment of Fibers 357 13.3.2 IR Spectra of Fibers 358 13.3.3 Thermogravimetric Analysis (TGA) 361 13.3.4 X-Ray Diffraction Analysis (XRD) 369 13.4 Conclusions 373 References 373 14 Influence of the Use of Natural Fibers in Composite Materials Assessed on a Life Cycle Perspective 377 Hugo Carvalho, Ana Raposo, Ines Ribeiro, Paulo Pecas, Arlindo Silva and Elsa Henriques 14.1 Introduction 377 14.2 Composite Materials: An Overview 379 14.2.1 Composites Design 380 14.2.2 Fiber-Reinforced Composites and Natural Fibers 380 14.2.3 World Production of Natural Fibers 381 14.3 Methodology 382 14.4 Case Study: Bonnet Component 383 14.4.1 Boundary Conditions and Loading 384 14.4.2 Materials 384 14.4.3 Technical Requirements 385 14.4.4 Design Specifications 387 14.5 Life Cycle Stages 389 14.5.1 Raw Material Acquisition 389 14.5.2 Transport 389 14.5.3 Manufacturing Phase 390 14.5.4 Use Phase 391 14.5.5 End of Life Phase 391 14.6 Results 391 14.6.1 Economic Dimension Evaluation 391 14.6.2 Environmental Dimension Evaluation 392 14.6.3 Technical Results 392 14.6.4 Global Evaluation 394 14.6.4.1 Sensitivity Analysis to the Life Cycle Stages 394 14.7 Conclusion 395 References 396 15 Plant Polysaccharides Blended Ionotropically Gelled Alginate Multiple Unit Systems for Sustained Drug Release 399 Dilipkumar Pal and Amit Kumar Nayak 15.1 Introduction 399 15.2 Plant Polysaccharide in Sustained Release Drug Delivery 401 15.3 Alginates and Their Ionotropic Gelation 402 15.4 Various Plant Polysaccharides-Blended Ionotropically-Gelled Alginate Microparticles/Beads 406 15.4.1 Locust Bean Bum-Alginate Blends 406 15.4.2 Gum Arabic-Alginate Blends 411 15.4.3 Tamarind Seed Polysaccharide-Alginate Blends 412 15.4.4 Okra Gum-Alginate Blends 417 15.4.5 Fenugreek Seed Mucilage-Alginate Blends 421 15.4.6 Ispaghula Husk Mucilage-Alginate Blends 423 15.4.7 Aloe Vera Gel-Alginate Blends 424 15.4.8 Sterculia Gum-Alginate Blends 425 15.4.9 Jackfruit Seed Starch-Alginate Blends 428 15.4.10 Potato Starch-Alginate Blends 430 15.5 Conclusion 431 References 431 16 Vegetable Oil-Based Polymer Composites: Synthesis, Properties and Their Applications 441 Shubhalakshmi Sengupta and Dipa Ray 16.1 Introduction 441 16.2 Vegetable Oils 442 16.2.1 Composition and Structure of Vegetable Oils 442 16.2.2 Properties of Vegetable Oils 443 16.3 Vegetable Oils Used for Polymers and Composites 444 16.3.1 Synthesis of Polymeric Materials from Vegetable Oils 444 16.3.2 Modification of Vegetable Oils and Their Use in Composites 447 16.3.2.1 Epoxidized Vegetable Oils and Their Composites 447 16.3.2.2 Maleated Vegetable Oils and Their Composites 454 16.3.3 Cationic Polymerization of Vegetable Oils and Their Composites 460 16.4 Free Radical Polymerization of Vegetable Oils and Their Composites 465 16.5 Application Possibilities and Future Directions 465 References 466 17 Applications of Chitosan Derivatives in Wastewater Treatment 471 Taslim U. Rashid, Md. Sazedul Islam, Sadia Sharmeen, Shanta Biswas, Asaduz Zaman, M. Nuruzzaman Khan, Abul K. Mallik, Papia Haque and Mohammed Mizanur Rahman 17.1 Introduction 471 17.2 Chitin and Chitosan 473 17.2.1 Sources of Chitin and Chitosan 474 17.2.2 Extraction of Chitosan 474 17.2.3 Properties of Chitosan 475 17.2.3.1 Degradation 477 17.2.3.2 Molecular Weight 477 17.2.3.3 Solvent Properties 477 17.2.3.4 Mechanical Properties 477 17.2.3.5 Adsorption 478 17.2.3.6 Cross-Linking Properties of Chitosan 478 17.2.3.7 Antioxidant Properties 479 17.2.4 Applications of Chitosan 480 17.3 Chitosan Derivatives in Wastewater Treatment 481 17.3.1 Carboxymethyl-Chitosan (CMC) 481 17.3.2 Ethylenediaminetetraaceticacid (EDTA) and Diethylenetriaminepentaacetic Acid (DTPA) Modified Chitosan 483 17.3.3 Triethylene-Tetramine Grafted Magnetic Chitosan (Fe3O4-TETA-CMCS) 484 17.3.4 Carboxymethyl-Polyaminate Chitosan (DETA-CMCHS) 486 17.3.5 Tetraethylenepentamine (TEPA) Modified Chitosan (TEPA-CS) 487 17.3.6 Ethylenediamine Modified Chitosan (EDA-CS) 488 17.3.7 Epichlorohydrin Cross-Linked Succinyl Chitosan (SCCS) 489 17.3.8 N-(2 -Hydroxy-3 Mercaptopropyl)-Chitosan 490 17.3.9 Epichlorohydrin Cross-Linked Chitosan (ECH-Chitosan) 490 17.3.10 Quaternary Chitosan Salt (QCS) 492 17.3.11 Magnetic Chitosan-Isatin Schiff 's Base Resin (CSIS) 492 17.3.12 Chitosan-Fe(III) Hydrogel 493 17.4 Adsorption of Heavy Metals on Chitosan Composites from Wastewater 493 17.4.1
-Fe2O3 impregnated Chitosan Beads With As(III) as Imprinted Ions 493 17.4.2 Chitosan/Cellulose Composites 494 17.4.3 Chitosan/Clinoptilolite Composite 495 17.4.4 Chitosan/Sand Composite 496 17.4.5 Chitosan/Bentonite Composite 496 17.4.6 Chitosan/Cotton Fiber 497 17.4.7 Magnetic Thiourea-Chitosan Imprinted Ag+ 498 17.4.8 Nano-Hydroxyapatite Chitin/Chitosan Hybrid Biocomposites 498 17.5 Adsorption of Dyes on Chitosan Composites from Wastewater 499 17.5.1 Fe2O3/Cross-Linked Chitosan Adsorbent 499 17.5.2 Chitosan-Lignin Composite 500 17.5.3 Chitosan-Polyaniline/ZnO Hybrid Composite 501 17.5.4 Coalesced Chitosan Activated Carbon Composite 502 17.5.5 Chitosan/Clay Composite 502 17.6 Conclusion 504 References 504 18 Novel Lignin-Based Materials as Products for Various Applications 519
ukasz Klapiszewski and Teofil Jesionowski 18.1 Lignin - A General Overview 519 18.1.1 A Short History 519 18.1.2 Synthesis and Structural Aspects 521 18.1.3 Types of Lignin 523 18.1.4 Applications of Lignin 528 18.2 Lignin/Silica-Based Hybrid Materials 531 18.3 Combining of Lignin and Chitin 535 18.4 Lignin-Based Products as Functional Materials 540 References 543 19 Biopolymers from Renewable Resources and Thermoplastic Starch Matrix as Polymer Units of Multi-Component Polymer Systems for Advanced Applications 555 Carmen-Alice Teac
and Ruxanda Bodirl
u 19.1 Introduction 555 19.2 Thermoplastic Starch Matrix and its Application for Advanced Composite Materials 557 19.3 Biopolymers from Sustainable Renewable Sources 558 19.3.1 Chitin 558 19.3.2 Wheat Straw 559 19.3.3 Spruce Bleached Kraft Pulp 559 19.4 Thermoplastic Starch as Polymer Matrix and Biopolymers from Renewable Resources for Composite Materials 560 19.4.1 Obtainment 560 19.4.1.1 Materials 561 19.4.1.2 Preparation of Composites Based on Plasticized Starch and Biopolymers with Addition of Vegetal Fillers 561 19.4.2 Investigation Methods and Properties 562 19.4.2.1 FTIR Spectroscopy Analysis 562 19.4.2.2 Water Uptake Measurements 563 19.4.2.3 Optical Properties 567 19.4.2.4 Evaluation of the Fillers' Particle Size 570 19.5 Conclusions 570 Acknowledgements 572 References 572 20 Chitosan Composites: Preparation and Applications in Removing Water Pollutants 577 Mohammad Reza Ganjali, Morteza Rezapour, Farnoush Faridbod and Parviz Norouzi 20.1 Introduction to Chitosan 577 20.1.1 Other Derivatives of Chitin 580 20.1.2 Properties of Chitosan 580 20.1.3 Modification and Derivatization of Chitosan 581 20.2 Chitosan Composites 583 20.2.1 Activated Clay-Chitosan (ACC) Composites 583 20.2.1.1 Attapulgite Clay-Nanocomposite 583 20.2.1.2 Composites of Bentonite, Montmorillonite, and Other Types of Clay 584 20.2.2 Alginate-Chitosan (AC) Composites 589 20.2.3 Cellulose-Chitosan (CC) Composites 589 20.2.3.1 Cotton Fiber-Chitosan Composites 591 20.2.4 Ceramic Alumina-Chitosan Composites 592 20.2.5 Hydroxyapatite-Chitosan Composites 596 20.3 Palm Oil Ash-Chitosan Composites 598 20.4 Perlite-Chitosan Composites 598 20.5 Polymer-Chitosan Composites 599 20.5.1 Polyurethane-Chitosan Composites 599 20.5.2 Polyvinyl Alcohol-Chitosan Composites 602 20.5.3 Polyacrylamide-Chitosan Composites 605 20.5.4 Polymethylmethacrylate-Chitosan Composites 607 20.5.5 Poly(methacrylic acid)-Chitosan Composites 611 20.5.6 Polyvinyl Chloride-Chitosan Composites 612 20.5.7 Molecular Imprinted-Chitosan Composites 613 20.6 Sand-Chitosan Composites 619 20.7 Magnetic Nano-Adsorbents or Micro-Adsorbent 619 20.7.1 Chitosan-Based Magnetic Particles 620 20.7.2 Modified-Chitosan or Chitosan-Polymer Based Magnetic Composites 627 20.7.3 Magnetic Chitosan-Carbon Composites 645 20.7.4 Magnetic Composites of Chitosan with Inorganic Compounds 649 References 652 21 Recent Advances in Biopolymer Composites for Environmental Issues 673 Mazhar Ul Islam, Shaukat Khan, Muhammad Wajid Ullah and Joong Kon Park 21.1 Introduction 673 21.2 Historical Background 674 21.3 Some Important Biopolymers 677 21.3.1 Bio-Cellulose 678 21.3.2 Xanthan and Dextran 679 21.3.3 Poly(hydroxyalkanoates) 680 21.3.4 Polylactide 680 21.3.5 Poly(trimethylene terephthalate) 681 21.4 Biopolymer Composites 681 21.5 Biodegradability of Biopolymers: An Important Feature for Addressing Environmental Concerns 682 21.6 Environmental Aspects of Biopolymers and Biopolymer Composites 684 21.6.1 Catalytic Degradation of Contaminants 684 21.6.2 Adsorption of Pollutants 685 21.6.3 Magnetic Composites 686 21.6.4 Pollutant Sensors 686 21.7 Future Prospects 686 Acknowledgement 687 References 687 Index 693
layda Duru, Oznur Demir O
uz, Hayriye Oztatl
, Duygu Ceren Ar
kfidan, Hatice Kaya, Elif Donmez and Duygu Ege 5.1 Collagen 107 5.2 Elastin 111 5.3 Silk Fibroin 114 5.4 Chitosan 116 5.5 Chondroitin Sulfate 119 5.6 Cellulose 121 5.7 Hyaluronic Acid 123 5.8 Poly(L-lysine) 126 References 128 6 Application of Hydrogel Biocomposites for Multiple Drug Delivery 139 S.J. Owonubi, S.C. Agwuncha, E. Mukwevho, B.A. Aderibigbe, E.R. Sadiku, O.F. Biotidara and K. Varaprasad 6.1 Introduction 140 6.2 Sustained Drug Release Systems 142 6.3 Controlled Release Systems 143 6.3.1 Half-Life of the Drug Formulation 143 6.3.2 Absorption 143 6.3.3 Metabolism 143 6.3.4 Dosage Size 144 6.3.5 pH Stability and Aqueous Stability of the Drug Formulation 144 6.3.6 Barrier Co-Efficient 144 6.3.7 Stability 144 6.4 Polymeric Drug Delivery Devices 146 6.5 Multiple Drug Delivery Systems 147 6.5.1 Supramolecules and In Situ-Forming Hydrogels 149 6.5.2 Layer-By-Layer Assembly 150 6.5.3 Interpenetrating Polymer Networks (IPNs) 150 6.5.4 Application of Hydrogels for Multiple Drug Delivery 151 6.5.5 Cancer Treatments 151 6.5.6 Diabetes Treatments 152 6.6 Tissue Engineering 153 6.6.1 Self-Healing 154 6.6.2 Molecular Sensing 155 6.7 Conclusion 155 References 155 7 Non-Toxic Holographic Materials (Holograms in Sweeteners) 167 Arturo Olivares-Perez 7.1 Introduction 167 7.2 Sugars as Holographic Recording Medium 168 7.2.1 Classification and Nomenclature 168 7.2.2 Monosaccharides/Glucose and Fructose 169 7.2.2.1 Glucose 169 7.2.2.2 Fructose 171 7.2.2.3 Disaccharides Sucrose 171 7.2.2.4 Polysaccharides, Pectins 174 7.2.2.5 Sweeteners Corn Syrup 175 7.3 Photosensitizers 176 7.3.1 Dyes 177 7.3.2 Dyes as Sensitizers 177 7.4 Sucrose Preparation and Film Generation 179 7.4.1 UV-Visible Spectral Analysis 180 7.4.2 Replication of Holographic Gratings is Sucrose 181 7.4.2.1 Holographic Code 181 7.4.2.2 Soft Mask 181 7.4.2.3 Thermosensitive Properties Through Mask 181 7.4.2.4 Replication 182 7.4.2.5 Diffraction Efficiency 183 7.4.3 Sucrose With Dyes 185 7.4.3.1 Sugar UV-Visible Spectral Analysis 185 7.4.3.2 Holographic Replicas 186 7.4.3.3 DE Sugar Tartrazine and Erioglaucine Dye 187 7.5 Corn Syrup 188 7.5.1 Holographic Replicas of Low and High Frequency 189 7.5.2 DE Corn Syrup 191 7.6 Hydrophobic Materials 192 7.6.1 Hydrophobic Mixture of Pectin Sucrose and Vanilla 192 7.6.2 UV-Visible Spectral Analysis 192 7.6.3 Holographic Replicas 192 7.6.4 DE Hydrophobic Films PSV 193 7.7 PSV with Dyes 194 7.7.1 UV-Visible Spectral Analysis 194 7.7.2 DE Films PSV and Erioglaucine 194 7.8 Pineapple Juice as Holographic Recording Material 195 7.8.1 Characterization of Pineapple Juice 196 7.8.2 Generation of Pineapple Films 196 7.8.3 Replication Technique 196 7.8.4 DE Pineapple Film 196 7.9 Holograms Made with Milk 198 7.9.1 Low-Fat Milk Tests 198 7.9.2 DE Milk Gratings 198 7.9.2.1 Gravity Technique 198 7.9.2.2 Spinner Technical 199 7.10 Conclusions 200 Acknowledgements 200 References 200 8 Bioplasitcizer Epoxidized Vegetable Oils-Based Poly(Lactic Acid) Blends and Nanocomposites 205 Buong Woei Chieng, Nor Azowa Ibrahim and Yuet Ying Loo 8.1 Introduction 205 8.2 Vegetable Oils 207 8.3 Expoxidation of Vegetable Oils 209 8.4 Poly(lactic acid) 211 8.5 Poly(lactic acid)/Epoxidized Vegetable Oil Blends 213 8.5.1 Poly(lactic acid)/Epoxidized Palm Oil Blend 213 8.5.2 Poly(lactic acid)/Epoxidized Soybean Oil Blend 217 8.5.3 Poly(lactic acid)/Epoxidized Sunflower Oil Blend 219 8.5.4 Poly(lactic acid)/Epoxidized Jatropha Oil Blend 220 8.6 Polymer/Epoxidized Vegetable Oil Nanocomposites 223 8.7 Summary 227 References 227 9 Preparation, Characterization, and Adsorption Properties of Poly(DMAEA) - Cross-Linked Starch Gel Copolymer in Wastewater 233 Sudhir Kumar Saw 9.1 Introduction 233 9.2 Experimental Procedure 237 9.2.1 Materials 237 9.2.2 Instrumentation 237 9.2.3 Preparation of Cross-Linked Starch Gel 238 9.2.4 Preparation of Poly(DMAEA) - Cross-Linked Starch Gel Graft Copolymer 238 9.2.5 Determination of Nitrogen 239 9.2.6 Experimental Process of Removal of Heavy Metal Ions 239 9.2.7 Removal of Dyes 240 9.2.8 Recovery of the Prepared Copolymer 240 9.3 Results and Discussion 240 9.3.1 Effect of pH 240 9.3.2 Effect of Extent of Grafting on Metal Removal 242 9.3.3 Effect of Adsorbent Dose Used 243 9.3.4 Effect of Treatment Time on the Metal Removal 243 9.3.5 Effect of Agitation Speed 244 9.3.6 Effect of Temperature 245 9.3.7 Recovery of Starch 247 9.3.8 Removal of Dyes 247 9.3.9 Adsorption Kinetics 248 9.3.10 Adsorption Isotherm 249 9.4 Conclusions 250 Acknowledgement 251 References 251 10 Study of Chitosan Cross-Linking Genipin Hydrogels for Absorption of Antifungal Drugs Using Molecular Modeling 255 Norma Aurea Rangel-Vazquez 10.1 Introduction 255 10.1.1 Polymers 255 10.1.1.1 Properties 256 10.1.2 Natural Polymers 257 10.1.2.1 Chitosan 258 10.1.3 Hydrogels 260 10.1.3.1 Applications 261 10.1.4 Antifungals 261 10.1.4.1 Classification 261 10.1.4.2 Fluconazole 262 10.1.4.3 Voriconazole 263 10.1.4.4 Ketoconazole 263 10.1.5 Molecular Modeling 264 10.2 Methodology 265 10.2.1 Geometry Optimization (
G) 265 10.2.2 Bond Lengths 265 10.2.3 FTIR 267 10.2.4 MESP 269 10.3 Results and Discussions 269 10.3.1 Gibbs Free Energy 269 10.3.2 Bond Lengths 270 10.3.3 FTIR 271 10.3.4 MESP 274 10.3.5 HOMO/LUMO Orbitals 275 10.5.4 Conclusions 281 References 282 11 Pharmaceutical Delivery Systems Composed of Chitosan 285 Livia N. Borgheti-Cardoso, Fabiana T.M.C. Vicentini, Marcilio S.S. Cunha Filho and Guilherme M. Gelfuso 11.1 Introduction 285 11.2 Chitosan Micro- and Nanoparticles 286 11.2.1 Oral Applications 287 11.2.2 Topical Formulations 288 11.2.3 Ocular Delivery Systems 289 11.3 Bioadhesive Chitosan Hydrogels 291 11.3.1 Ocular Gel Formulations 292 11.3.2 Topical Formulations 293 11.4 Chitosan Topical/Transdermal Films 295 11.5 Chitosan as Coating Material to Produce Lipid Capsules, Liposomes, Metallic and Magnetic Nanoparticles 296 11.6 Oral Beads Based on Chitosan for Controlled Delivery of Drugs 298 11.7 Conclusion 300 Acknowledgement 300 References 300 12 Eco-Friendly Polymers for Food Packaging 309 Sweetie R. Kanatt, Shobita. R. Muppalla and S.P. Chawla 12.1 Introduction 309 12.2 Sources of Biopolymers 311 12.2.1 Polymers Extracted from Biomass 311 12.2.2 Polysaccharides 312 12.2.2.1 Starch 312 12.2.2.2 Corn Starch 313 12.2.2.3 Cassava Starch 314 12.2.2.4 Potato Starch 314 12.2.2.5 Konjac Glucomannan 314 12.2.2.6 Starch Modifications 314 12.2.3 Cellulose 315 12.2.3.1 Cellulose Derivatives 316 12.2.4 Gums 316 12.2.4.1 Guar Gum 316 12.2.4.2 Locust Bean Gum 317 12.2.4.3 Gum Arabic 318 12.2.4.4 Pectin 318 12.2.4.5 Chitin and Chitosan 319 12.2.5 Proteins 319 12.2.5.1 Zein 320 12.2.5.2 Wheat Gluten 321 12.2.5.3 Soy Protein 321 12.2.5.4 Whey Protein and Casein 321 12.2.5.5 Collagen 322 12.2.6 Lipids 322 12.2.7 Polymers Obtained from Microbial Sources 323 12.2.7.1 Agar 323 12.2.7.2 Alginate 323 12.2.7.3 Carrageenan 324 12.2.7.4 Gellan 324 12.2.7.5 Pullulan 325 12.2.7.6 Xanthan 325 12.2.7.7 Bacterial Cellulose 326 12.2.7.8 Polyhydroxyalkonates (PHA) 326 12.2.8 Polymers Synthesized from Bio-Derived Monomers 326 12.2.8.1 Polylactic Acid (PLA) 326 12.3 Properties of Biopolymer Packaging Films 327 12.3.1 Physical Properties 327 12.3.1.1 Permeability 327 12.3.1.2 Oxygen Transmission Rate (OTR) 328 12.3.1.3 Water Vapor Transmission Rate (WVTR) 329 12.3.1.4 Carbon Dioxide Transmission Rate (CO2TR) 330 12.3.2 Mechanical Properties 330 12.3.3 Thermal Properties 331 12.3.4 Degradation 332 12.3.4.1 Biodegradation 332 12.4 Composite Films 333 12.5 Bionanocomposites 335 12.6 Methods for Film Processing 335 12.6.1 Casting 336 12.6.2 Extrusion 336 12.6.3 Injection Molding 336 12.6.4 Blow Molding 337 12.6.5 Thermoforming 337 12.6.6 Foamed Products 337 12.7 Applications of Biopolymers in Food Packaging 338 12.7.1 Biodegradable Packaging Material 338 12.7.2 Active Packaging 338 12.7.3 Biopolymers as Edible Packaging 339 12.7.3.1 Edible Coating 339 12.7.3.2 Fruits and Vegetables 340 12.7.3.3 Flesh Foods 341 12.7.3.4 Seafoods 341 12.7.3.5 Meat and Meat Products 341 12.7.3.6 Eggs 341 12.7.3.7 Nuts 342 12.7.3.8 Dairy Products 342 12.7.4 Edible Films 343 12.7.4.1 Fruits and Vegetables 343 12.7.4.2 Flesh Foods 343 12.7.5 Intelligent Packaging 344 12.8 Conclusion and Future Prospects 344 References 345 13 Influence of Surface Modification on the Thermal Stability and Percentage of Crystallinity of Natural Abaca Fiber 353 Basavaraju Bennehalli, Srinivasa Chikkol Venkateshappa, Rama Devi Punyamurthy, Dhanalakshmi Sampathkumar and Raghu Patel Gowdru Rangana Gowda 13.1 Introduction 353 13.2 Materials and Methods 355 13.2.1 Materials 355 13.2.2 Alkali Treatment of Abaca Fiber 355 13.2.3 Acrylic Acid Treatment of Abaca Fiber 356 13.2.4 Acetylation of Abaca Fiber 356 13.2.5 Benzoylation of Abaca Fiber 356 13.2.6 Permanganate Treatment of Abaca Fiber 356 13.2.7 Fourier Transform Infrared Spectroscopy (FTIR) 356 13.2.8 Thermogravimetric Analysis (TGA) 356 13.2.9 X-Ray Diffraction Analysis (XRD) 357 13.3 Results and Discussion 357 13.3.1 Chemical Treatment of Fibers 357 13.3.2 IR Spectra of Fibers 358 13.3.3 Thermogravimetric Analysis (TGA) 361 13.3.4 X-Ray Diffraction Analysis (XRD) 369 13.4 Conclusions 373 References 373 14 Influence of the Use of Natural Fibers in Composite Materials Assessed on a Life Cycle Perspective 377 Hugo Carvalho, Ana Raposo, Ines Ribeiro, Paulo Pecas, Arlindo Silva and Elsa Henriques 14.1 Introduction 377 14.2 Composite Materials: An Overview 379 14.2.1 Composites Design 380 14.2.2 Fiber-Reinforced Composites and Natural Fibers 380 14.2.3 World Production of Natural Fibers 381 14.3 Methodology 382 14.4 Case Study: Bonnet Component 383 14.4.1 Boundary Conditions and Loading 384 14.4.2 Materials 384 14.4.3 Technical Requirements 385 14.4.4 Design Specifications 387 14.5 Life Cycle Stages 389 14.5.1 Raw Material Acquisition 389 14.5.2 Transport 389 14.5.3 Manufacturing Phase 390 14.5.4 Use Phase 391 14.5.5 End of Life Phase 391 14.6 Results 391 14.6.1 Economic Dimension Evaluation 391 14.6.2 Environmental Dimension Evaluation 392 14.6.3 Technical Results 392 14.6.4 Global Evaluation 394 14.6.4.1 Sensitivity Analysis to the Life Cycle Stages 394 14.7 Conclusion 395 References 396 15 Plant Polysaccharides Blended Ionotropically Gelled Alginate Multiple Unit Systems for Sustained Drug Release 399 Dilipkumar Pal and Amit Kumar Nayak 15.1 Introduction 399 15.2 Plant Polysaccharide in Sustained Release Drug Delivery 401 15.3 Alginates and Their Ionotropic Gelation 402 15.4 Various Plant Polysaccharides-Blended Ionotropically-Gelled Alginate Microparticles/Beads 406 15.4.1 Locust Bean Bum-Alginate Blends 406 15.4.2 Gum Arabic-Alginate Blends 411 15.4.3 Tamarind Seed Polysaccharide-Alginate Blends 412 15.4.4 Okra Gum-Alginate Blends 417 15.4.5 Fenugreek Seed Mucilage-Alginate Blends 421 15.4.6 Ispaghula Husk Mucilage-Alginate Blends 423 15.4.7 Aloe Vera Gel-Alginate Blends 424 15.4.8 Sterculia Gum-Alginate Blends 425 15.4.9 Jackfruit Seed Starch-Alginate Blends 428 15.4.10 Potato Starch-Alginate Blends 430 15.5 Conclusion 431 References 431 16 Vegetable Oil-Based Polymer Composites: Synthesis, Properties and Their Applications 441 Shubhalakshmi Sengupta and Dipa Ray 16.1 Introduction 441 16.2 Vegetable Oils 442 16.2.1 Composition and Structure of Vegetable Oils 442 16.2.2 Properties of Vegetable Oils 443 16.3 Vegetable Oils Used for Polymers and Composites 444 16.3.1 Synthesis of Polymeric Materials from Vegetable Oils 444 16.3.2 Modification of Vegetable Oils and Their Use in Composites 447 16.3.2.1 Epoxidized Vegetable Oils and Their Composites 447 16.3.2.2 Maleated Vegetable Oils and Their Composites 454 16.3.3 Cationic Polymerization of Vegetable Oils and Their Composites 460 16.4 Free Radical Polymerization of Vegetable Oils and Their Composites 465 16.5 Application Possibilities and Future Directions 465 References 466 17 Applications of Chitosan Derivatives in Wastewater Treatment 471 Taslim U. Rashid, Md. Sazedul Islam, Sadia Sharmeen, Shanta Biswas, Asaduz Zaman, M. Nuruzzaman Khan, Abul K. Mallik, Papia Haque and Mohammed Mizanur Rahman 17.1 Introduction 471 17.2 Chitin and Chitosan 473 17.2.1 Sources of Chitin and Chitosan 474 17.2.2 Extraction of Chitosan 474 17.2.3 Properties of Chitosan 475 17.2.3.1 Degradation 477 17.2.3.2 Molecular Weight 477 17.2.3.3 Solvent Properties 477 17.2.3.4 Mechanical Properties 477 17.2.3.5 Adsorption 478 17.2.3.6 Cross-Linking Properties of Chitosan 478 17.2.3.7 Antioxidant Properties 479 17.2.4 Applications of Chitosan 480 17.3 Chitosan Derivatives in Wastewater Treatment 481 17.3.1 Carboxymethyl-Chitosan (CMC) 481 17.3.2 Ethylenediaminetetraaceticacid (EDTA) and Diethylenetriaminepentaacetic Acid (DTPA) Modified Chitosan 483 17.3.3 Triethylene-Tetramine Grafted Magnetic Chitosan (Fe3O4-TETA-CMCS) 484 17.3.4 Carboxymethyl-Polyaminate Chitosan (DETA-CMCHS) 486 17.3.5 Tetraethylenepentamine (TEPA) Modified Chitosan (TEPA-CS) 487 17.3.6 Ethylenediamine Modified Chitosan (EDA-CS) 488 17.3.7 Epichlorohydrin Cross-Linked Succinyl Chitosan (SCCS) 489 17.3.8 N-(2 -Hydroxy-3 Mercaptopropyl)-Chitosan 490 17.3.9 Epichlorohydrin Cross-Linked Chitosan (ECH-Chitosan) 490 17.3.10 Quaternary Chitosan Salt (QCS) 492 17.3.11 Magnetic Chitosan-Isatin Schiff 's Base Resin (CSIS) 492 17.3.12 Chitosan-Fe(III) Hydrogel 493 17.4 Adsorption of Heavy Metals on Chitosan Composites from Wastewater 493 17.4.1
-Fe2O3 impregnated Chitosan Beads With As(III) as Imprinted Ions 493 17.4.2 Chitosan/Cellulose Composites 494 17.4.3 Chitosan/Clinoptilolite Composite 495 17.4.4 Chitosan/Sand Composite 496 17.4.5 Chitosan/Bentonite Composite 496 17.4.6 Chitosan/Cotton Fiber 497 17.4.7 Magnetic Thiourea-Chitosan Imprinted Ag+ 498 17.4.8 Nano-Hydroxyapatite Chitin/Chitosan Hybrid Biocomposites 498 17.5 Adsorption of Dyes on Chitosan Composites from Wastewater 499 17.5.1 Fe2O3/Cross-Linked Chitosan Adsorbent 499 17.5.2 Chitosan-Lignin Composite 500 17.5.3 Chitosan-Polyaniline/ZnO Hybrid Composite 501 17.5.4 Coalesced Chitosan Activated Carbon Composite 502 17.5.5 Chitosan/Clay Composite 502 17.6 Conclusion 504 References 504 18 Novel Lignin-Based Materials as Products for Various Applications 519
ukasz Klapiszewski and Teofil Jesionowski 18.1 Lignin - A General Overview 519 18.1.1 A Short History 519 18.1.2 Synthesis and Structural Aspects 521 18.1.3 Types of Lignin 523 18.1.4 Applications of Lignin 528 18.2 Lignin/Silica-Based Hybrid Materials 531 18.3 Combining of Lignin and Chitin 535 18.4 Lignin-Based Products as Functional Materials 540 References 543 19 Biopolymers from Renewable Resources and Thermoplastic Starch Matrix as Polymer Units of Multi-Component Polymer Systems for Advanced Applications 555 Carmen-Alice Teac
and Ruxanda Bodirl
u 19.1 Introduction 555 19.2 Thermoplastic Starch Matrix and its Application for Advanced Composite Materials 557 19.3 Biopolymers from Sustainable Renewable Sources 558 19.3.1 Chitin 558 19.3.2 Wheat Straw 559 19.3.3 Spruce Bleached Kraft Pulp 559 19.4 Thermoplastic Starch as Polymer Matrix and Biopolymers from Renewable Resources for Composite Materials 560 19.4.1 Obtainment 560 19.4.1.1 Materials 561 19.4.1.2 Preparation of Composites Based on Plasticized Starch and Biopolymers with Addition of Vegetal Fillers 561 19.4.2 Investigation Methods and Properties 562 19.4.2.1 FTIR Spectroscopy Analysis 562 19.4.2.2 Water Uptake Measurements 563 19.4.2.3 Optical Properties 567 19.4.2.4 Evaluation of the Fillers' Particle Size 570 19.5 Conclusions 570 Acknowledgements 572 References 572 20 Chitosan Composites: Preparation and Applications in Removing Water Pollutants 577 Mohammad Reza Ganjali, Morteza Rezapour, Farnoush Faridbod and Parviz Norouzi 20.1 Introduction to Chitosan 577 20.1.1 Other Derivatives of Chitin 580 20.1.2 Properties of Chitosan 580 20.1.3 Modification and Derivatization of Chitosan 581 20.2 Chitosan Composites 583 20.2.1 Activated Clay-Chitosan (ACC) Composites 583 20.2.1.1 Attapulgite Clay-Nanocomposite 583 20.2.1.2 Composites of Bentonite, Montmorillonite, and Other Types of Clay 584 20.2.2 Alginate-Chitosan (AC) Composites 589 20.2.3 Cellulose-Chitosan (CC) Composites 589 20.2.3.1 Cotton Fiber-Chitosan Composites 591 20.2.4 Ceramic Alumina-Chitosan Composites 592 20.2.5 Hydroxyapatite-Chitosan Composites 596 20.3 Palm Oil Ash-Chitosan Composites 598 20.4 Perlite-Chitosan Composites 598 20.5 Polymer-Chitosan Composites 599 20.5.1 Polyurethane-Chitosan Composites 599 20.5.2 Polyvinyl Alcohol-Chitosan Composites 602 20.5.3 Polyacrylamide-Chitosan Composites 605 20.5.4 Polymethylmethacrylate-Chitosan Composites 607 20.5.5 Poly(methacrylic acid)-Chitosan Composites 611 20.5.6 Polyvinyl Chloride-Chitosan Composites 612 20.5.7 Molecular Imprinted-Chitosan Composites 613 20.6 Sand-Chitosan Composites 619 20.7 Magnetic Nano-Adsorbents or Micro-Adsorbent 619 20.7.1 Chitosan-Based Magnetic Particles 620 20.7.2 Modified-Chitosan or Chitosan-Polymer Based Magnetic Composites 627 20.7.3 Magnetic Chitosan-Carbon Composites 645 20.7.4 Magnetic Composites of Chitosan with Inorganic Compounds 649 References 652 21 Recent Advances in Biopolymer Composites for Environmental Issues 673 Mazhar Ul Islam, Shaukat Khan, Muhammad Wajid Ullah and Joong Kon Park 21.1 Introduction 673 21.2 Historical Background 674 21.3 Some Important Biopolymers 677 21.3.1 Bio-Cellulose 678 21.3.2 Xanthan and Dextran 679 21.3.3 Poly(hydroxyalkanoates) 680 21.3.4 Polylactide 680 21.3.5 Poly(trimethylene terephthalate) 681 21.4 Biopolymer Composites 681 21.5 Biodegradability of Biopolymers: An Important Feature for Addressing Environmental Concerns 682 21.6 Environmental Aspects of Biopolymers and Biopolymer Composites 684 21.6.1 Catalytic Degradation of Contaminants 684 21.6.2 Adsorption of Pollutants 685 21.6.3 Magnetic Composites 686 21.6.4 Pollutant Sensors 686 21.7 Future Prospects 686 Acknowledgement 687 References 687 Index 693