Strain hardening of polycarbonate in the glassy state: influence of temperature and molecular weight

L.E. Govaert, T.A. Tervoort

Research output: Contribution to journalArticleAcademicpeer-review

55 Citations (Scopus)
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Abstract

This study is concerned with the temperature and molecular weight dependenceof the strain-hardening behavior of polycarbonate. It is shown that the strain-hardening modulus reduces with increasing temperature and decreasing molecularweight. This result is interpreted in terms of temperature accelerated relaxationof the entanglement network. Moreover, it is shown that frozen-in orientations, in-duced by homogeneous deformations above the glass transition temperature, leadto anisotropic yield behavior that can be fully rationalized (and modelled) in termsof a superimposed stress contribution of the pre-strained network.
Original languageEnglish
Pages (from-to)2041-2049
Number of pages9
JournalJournal of Polymer Science, Part B: Polymer Physics
Volume42
Issue number11
DOIs
Publication statusPublished - 2004

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