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Influence of temperature on the ultrasonic degradation of poly(vinyl acetate) and poly(vinyl chloride)
Author(s) -
Chattopadhyay Sujay,
Madras Giridhar
Publication year - 2003
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.12130
Subject(s) - polyvinyl chloride , chlorobenzene , polyvinyl acetate , gel permeation chromatography , degradation (telecommunications) , polymer chemistry , vinyl acetate , vinyl chloride , materials science , kinetics , intrinsic viscosity , glass transition , viscosity , molar mass distribution , mass fraction , chemical engineering , chemistry , nuclear chemistry , composite material , polymer , organic chemistry , catalysis , copolymer , physics , quantum mechanics , computer science , engineering , telecommunications
Abstract This study investigates the effect of temperature on the ultrasonic degradation of polyvinyl acetate and polyvinyl chloride in chlorobenzene. The time evolution of molecular weight distribution was determined using gel permeation chromatography. Continuous distribution kinetics was used to obtain the degradation rate coefficients. The rate coefficients decrease with increasing temperature, and this is attributed to the increase of vapor pressure and the decrease of kinematic viscosity. The degradation rate coefficient also changes sharply near the glass transition temperature, indicating that this factor may play a role in the degradation process. © 2003 Wiley Periodicals, Inc. J Appl Polym Sci 12: 2818–2822, 2003