Crystallization Modalities in Polymer Melt Processing (eBook, PDF) - Janeschitz-Kriegl, Hermann
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Structure formation in crystallizing polymers, as occurring during processing, has not been treated so far in a coherent form. This fact explains, why this monograph is written as the ?rst book devoted to this subject. A quarter of a century ago the underdevelopment of this subject was obvious. Trial and error dominated. In fact, other apposite subjects as polymer melt rheology or heat transfer, had reached high levels. A great number of books has been devoted to them. Mold ?lling of amorphous polymers and the solidi?cation of these polymers by vitri?cation can nowadays be simulated…mehr

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Produktbeschreibung
Structure formation in crystallizing polymers, as occurring during processing, has not been treated so far in a coherent form. This fact explains, why this monograph is written as the ?rst book devoted to this subject. A quarter of a century ago the underdevelopment of this subject was obvious. Trial and error dominated. In fact, other apposite subjects as polymer melt rheology or heat transfer, had reached high levels. A great number of books has been devoted to them. Mold ?lling of amorphous polymers and the solidi?cation of these polymers by vitri?cation can nowadays be simulated numerically with a high degree of accuracy. In the solidi?ed sample even residual stresses and corresponding birefringence effects can accurately be 1 calculated . However, semicrystalline polymers, which form the majority of industrial po- mers, have been excluded from these considerations for good reasons. In fact, great uncertainties existed about the formation of quality determining crystalline str- tures. In particular, polyole?ns suffered from this shortcoming. In 1983 this fact instigated the polymer research group at the Johannes Kepler University in Linz to start with pertinent activities. The urgency of this kind of studies becomes evident, if advantages and hitches of these polymers are considered. 1. Versatility of processing: Injection molding into a great variety of shapes and sizes, from thin walled beakers to garden chairs, not to forget pipe and pro?le extrusion, cable coating, ?ber spinning, ?lm blowing. 2. Product qualities: Ductility, low density, good electric insulation, corrosion resistance, surface quality.
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.