Sebastian Lenz

Stress ¿ structure correlations in grafted polymer films

Phase transitions in constrained polymer films and why they are different from "normal" films and bulk

• Broschiertes Buch

Produktbeschreibung

This work presents experimental results on grafted polymer films. The aim was to understand transition processes in grafted polymer films regarding their structure and chain mechanics. For such purpose structural attributes of grafted polymer films were related to mechanical attributes. First the fundamental background, which is needed to analyze and understand experimental data, is pictured. This includes also new approaches for scattering data analysis. Experimental studies were focused on two different kinds of polymer film systems were investigated. Endgrafted poly-mehtyl-methacrylate (PMMA) brush films were investigated regarding their collapse - swelling transition on the solvent quality. It was observed that attractive interactions in the brush decreased for theta solvent conditions. For grafted to polystyrene (PS)/poly-vinyl-methyl-ether (PVME) blend films was concluded that the grafted polymer chains need an adequate degree of entropical freedom to undergo phase separations. Mechanical surface stress experiments made the understanding of the observed phase separation mechanisms possible.

Produktdetails

• Verlag: Südwestdeutscher Verlag für Hochschulschriften
• Seitenzahl: 168
• Erscheinungstermin: 28. Oktober 2015
• Englisch
• Abmessung: 220mm x 150mm x 11mm
• Gewicht: 269g
• ISBN-13: 9783838115894
• ISBN-10: 3838115899
• Artikelnr.: 29384682

Autorenporträt

2001 - 2006 student of chemistry (diploma) at the University ofRegensburg, Germany.2006 Diploma thesis at the University of Florence, Italy.2006 - 2009 Ph.D. student at the Max Planck Institute for PolymerResearch, Mainz, Germany.