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Isothermal rupture characteristics of a plasticized poly(vinyl chloride) in the glass–rubber transition zone
Author(s) -
Smoley E. M.
Publication year - 1976
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.1976.070200119
Subject(s) - materials science , viscoelasticity , composite material , vinyl chloride , natural rubber , strain rate , isothermal process , deformation (meteorology) , glass transition , stress relaxation , relaxation (psychology) , polyvinyl chloride , fracture (geology) , creep , thermodynamics , polymer , psychology , social psychology , physics , copolymer
Constant strain‐rate uniaxial extension tests to rupture were performed at 23°C on a plasticized poly(vinyl chloride) (PVC) in the glass‐to‐rubber transition zone, T g = −18°C, where experimental failure time t f is equal to or greater than material relaxation time τ. Range of strain rate is from 1.8 × 10 −4 to 1.8 × 10 −1 sec −1 . The rupture characteristics in stress/strain time space are analyzed on the three coordinate planes. Time and deformation separability are examined in a nonlinear‐constitutive relation. Rupture data on the coordinate planes are described by the Bueche‐Halpin theory in which time effects are considered through a small‐deformation viscoelastic property. Fracture surface morphology and separation processes in the crack tip are related to rupture characteristics.