✦ LIBER ✦

Quantitative molecular characterization of cold-drawn semi-crystalline polymers. Case of polyethylene terephthalate

✍ Scribed by J.P. Cavrot; F. Rietsch

Publisher: Elsevier Science
Year: 1985
Tongue: English
Weight: 424 KB
Volume: 21
Category: Article
ISSN: 0014-3057
DOI: 10.1016/0014-3057(85)90153-3

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✦ Synopsis

A~tract--The influence of pre-orientation on the natural draw ratio achieved in necking has been studied for poly(ethylene terephthalate). The results are analysed with the aid of the non-Gaussian theory of rubber elasticity assuming that the amorphous phase behaves as a network formed by entanglements of chains. A model for separating the influence of amorphous and strain-induced crystalline regions on deformation is proposed and compared with the pseudo-affine model.

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✍ F. Rietsch 📂 Article 📅 1985 🏛 Elsevier Science 🌐 English ⚖ 837 KB

The stress-strain birefringence relations obtained from the hot drawing of poly(ethylene terephthalate) films are analysed within the framework of non-Gaussian models of rubber elasticity. It is found that, in spite of the increasing influence of strain-induced crystallization for higher draw ratios