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Surface morphology of polystyrene fractured in liquids. II
Author(s) -
Earl B. L.,
Crook M.,
Loneragan R. J.,
Johns J. H. T.,
Markham J.
Publication year - 1974
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.1974.070180320
Subject(s) - polystyrene , materials science , composite material , fracture (geology) , glass transition , scanning electron microscope , morphology (biology) , heptane , natural rubber , surface tension , polymer , chemistry , thermodynamics , organic chemistry , genetics , physics , biology
Polystyrene has been fractured in tension at two temperatures in n ‐heptane and n ‐propanol and the fracture surfaces studied by optical and scanning electron microscopy. The test temperatures were selected such as to be approximately 20°C above and below the temperatures at which it was expected 1 that a glass‐to‐rubber transition would occur in the solvent‐penetrated craze material. It was found that features of the fracture process and also structure of the fracture surfaces were different at the two temperatures. These changes have been interpreted in terms of a T g occurring in the craze material.