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Effects of strain rate and comonomer on the brittle–ductile transition of polymers

✍ Scribed by Souheng Wu

Publisher
John Wiley and Sons
Year
1976
Tongue
English
Weight
300 KB
Volume
20
Category
Article
ISSN
0021-8995

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✦ Synopsis

The effect of rate on the brittle-ductile transition of polymers can be given by an Arrheniustype equation with activation energy between those of 01 and p transitions and given by where Eb is the activation energy for brittle-ductile transition, E , is that for a transition, Ep is that for / 3 transition, Tg is the glass transition temperature, Tb is the brittle-ductile transition temperature at 0.1 min.-', T, is the 01 transition temperature at 1 cps, and TB is the 0 transition temperature at 1 cps. The plots of Tb versus the weight fraction (w) of comonomer are sigmoidal, with an inflection point at w = 0.5.

Tensile strain and modulus behavior of poly(methy1 methacrylate) at 0.1 min-' strain

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