Hermann Janeschitz-Kriegl

Crystallization Modalities in Polymer Melt Processing (eBook, PDF)

Fundamental Aspects of Structure Formation

• Format: PDF

Produktbeschreibung

The first book to explicitly focus on the processing of crystallizing polymers, it presents innovative research on diverse interfering processes to help clarify the subject. The first to address the unexpectedly strong interaction of three transport phenomena: heat transfer, momentum transfer (rheology) with crystallization kinetics. With many applications, most well-known crystalline structures are found in polymers like high and low density polyethylene, polypropylene, polybutene and their copolymers. Common problems such as anisotropic shrinkage, warping, and split fiber formation are covered. In addition to applications on amorphous polymers, attempts at numerical simulation on crystallizing polymers are also examined. A feeling for the origins of undesired orientations and frozen-in stresses often associated with the manufacturing process is provided to polymer chemists, applied physicists, rheologists, plastics engineers, mold makers and material scientists.

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Produktdetails

• Verlag: Springer Vienna
• Seitenzahl: 221
• Erscheinungstermin: 18. September 2009
• Englisch
• ISBN-13: 9783211876275
• Artikelnr.: 37351422

Autorenporträt

Hermann Janeschitz-Kriegl, professor emeritus from Johannes Kepler University Linz, was born in Graz, Austria, October 22, 1924. He studied chemistry at Graz University where he graduated with a doctoral thesis on cellulose in 1951. From 1952-1968 he worked at TNO Delft, the Netherlands, on several polymer science and engineering subjects. From 1968-1978 he was a full professor at Delft University. He became a Fellow of the Plastics Institute London, UK, in 1968. Since 1978 he has been professor of physical chemistry at Linz University. He is the author of the monograph "Polymer Melt Rheology and Flow Birefringence", Springer 1983, and the first edition of the present book, Springer 2009. In 1994 he  received the Honorary Doctorate from Leoben Unversity, and in 2003 the Honorary Membership of the German Society of Rheology.

Inhaltsangabe

Introduction.- Interaction of three transport phenomena:heat transfer, flow and crystallization kinetics; Available theories describing the crystallization process; Examples for special cases; Crystallization in confined volumina; Behaviour of confined samples; Influence of strong temperature gradients.- Kinetics and structure formation in unloaded quiescent melts;Introductory remarks; Empirical techniques; Theoretical considerations; Winter´s gel point.- Flow induced processes causing oriented crystallization; Preamble;Some comments of considerable reach; Survey of activities in the field of flow induced crystallization; Duct flow experiments; Flow induced small-sized ('point-like') nuclei; Relaxation phenomena; Uninterrupted flow treatments. Closing remarks.