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Temperature and strain rate dependence of the tensile yield stress of PVC
Author(s) -
Povolo Francisco,
Schwartz Gustavo,
Hermida Élida B.
Publication year - 1996
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/(sici)1097-4628(19960705)61:1<109::aid-app12>3.0.co;2-2
Subject(s) - enthalpy , ultimate tensile strength , materials science , yield (engineering) , strain rate , thermodynamics , relaxation (psychology) , vinyl chloride , stress relaxation , polyvinyl chloride , volume (thermodynamics) , composite material , stress (linguistics) , strain (injury) , tensile testing , creep , polymer , physics , medicine , linguistics , philosophy , psychology , social psychology , copolymer
Data on the tensile yield behavior of poly(vinyl chloride) (PVC), reported in the literature, are interpreted in terms of a model involving a cooperative movement of several independent structural units, all with the same activation enthalpy. This analysis leads to physical parameters such as the internal stress, activation volume, and enthalpy, etc. These values are discussed and compared with those determined from thermodynamical considerations using stress relaxation tests and tensile curves at a constant strain rate. © 1996 John Wiley & Sons, Inc.