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Pulse propagation in polyester–solvent systems
Author(s) -
Weigmann H.D.,
Ribnick A. S.
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.1976.070200902
Subject(s) - polyester , solvent , materials science , composite material , shrinkage , glass transition , pulse (music) , protein filament , discontinuity (linguistics) , polymer chemistry , thermodynamics , optics , chemistry , organic chemistry , polymer , physics , detector , mathematical analysis , mathematics
The propagation of sonic pulses through solvent‐swollen polyester yarns has been investigated. A discontinuity is observed in the temperature dependence of the pulse transit time which has been associated with the on set of the glass transition of the polyester–solvent system. Good agreement is reached for several systems with an extrapolated zero shrinkage temperature obtained from dynamic shrinkage determination of the filament in the appropriate solvent. The agreement between the two methods suggests that an interaction parameter for the polyester–solvent system is measured which must ba associated with the onset of its glass transition.