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Polymer crystallization kinetics: Poly(ethylene terephthalate) and poly(phenylene sulfide)
Author(s) -
Ravindranath K.,
Jog J. P.
Publication year - 1993
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.1993.070490807
Subject(s) - crystallization , nucleation , materials science , isothermal process , thermodynamics , phenylene , crystallization of polymers , kinetics , sulfide , ethylene , polymer , poly ethylene , exponent , polymer chemistry , composite material , chemistry , physics , organic chemistry , philosophy , catalysis , quantum mechanics , metallurgy , linguistics
Analysis of isothermal crystallization data of PET and PPS was carried out using Avrami and Tobin models. The models gave fractional values of exponent n and the standard deviation varied between 1 and 4%. No improvement in the standard deviation could be obtained even after incorporating the nucleation rate in these models. The Hillier model gave a good fit only to the isothermal crystallization data of PET. A simple model considering primary and secondary crystallization has been proposed. The model is verified using isothermal crystallization data of PPS. © 1993 John Wiley & Sons, Inc.