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The influence of structure on the failure of isotactic polypropylene films
Author(s) -
Samuels Robert Joel
Publication year - 1979
Publication title -
polymer engineering and science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.503
H-Index - 111
eISSN - 1548-2634
pISSN - 0032-3888
DOI - 10.1002/pen.760190203
Subject(s) - tacticity , materials science , polypropylene , composite material , glass transition , atmospheric temperature range , polymer , thermodynamics , polymerization , physics
The failure behavior of uniaxially‐oriented isotactic polypropylene films has been examined over a wide range of rates and temperatures. Above the glass transition temperature the failure behavior is observed to be a direct function of the initial noncrystalline orientation state of the film. Below the glass transition temperature (−80°C, −196°C), both the crystalline and noncrystalline regions contribute to the failure.