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Role of chain entanglement network on formation of flow-induced crystallization precursor structure

Research output: Chapter in Book/Report/Conference proceedingChapterpeer-review

15 Scopus citations

Abstract

In this article, the role of chain entanglement on the formation of flowinduced crystallization precursor structure in polymer melts was discussed. In particular, recent experimental findings from in-situ rheo-X-ray studies and ex-situ microscopic examinations were described: (1) the shish arise from the stretched chain segments in the entanglement network of the high molecular weight species; (2) the kebabs arise from the crystallization of coiled chain segments following diffusioncontrol growth; (3) multiple shish was seen in the ultra-high molecular weight polyethylene (UHMWPE) precursor; (4) the shish-kebab reformation is directly related to the relaxation behavior of stretched chain segments confined in a topologically deformed entanglement network. Based on the above results and recent simulation work from other laboratories, a modified molecular mechanism for the shish-kebab formation in entangled melt is presented.

Original languageEnglish
Title of host publicationProgress in Understanding of Polymer Crystallization
EditorsGunter Reiter, Gert Strobl
Pages133-149
Number of pages17
DOIs
StatePublished - 2007

Publication series

NameLecture Notes in Physics
Volume714
ISSN (Print)0075-8450

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