Journal of the Society of Materials Science, Japan
Online ISSN : 1880-7488
Print ISSN : 0514-5163
Original Papers
Multi-scale Modeling of Degradation Behavior for Crystalline Polymer
Masakazu KUDOJunichi TAKAHASHIToshiharu YAMAMOTOMakoto UCHIDAYoshihiro TOMITA
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2015 Volume 64 Issue 4 Pages 311-316

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Abstract

Coarse-grained molecular dynamics simulations are conducted, for the purpose of the study on the microscopic structure change of crystalline polymer due to degradation. Interlamellar structure changes are observed during the degradation, decreasing loop and bridge chains, increasing short tail chains. From the elongation simulation of lamellar structure, craze strength is dropped during the degradation, because of decreasing oriented interlamellar chains and drawing of the molecular chains from the crystal part. Multi-scale modeling is conducted to demonstrate the relationship between microscopic structure changes and macroscopic mechanical properties. As a result, macroscopic fracture strain is reduced by the degradation, because craze growth rate becomes faster with the degradation.

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© 2015 by The Society of Materials Science, Japan
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