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Kinetic studies on copolycondensation processes. IV. Chemical composition of copolycondensation products
Author(s) -
Turska E.,
Pietrzak L.,
Jantas R.
Publication year - 1979
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.1979.070230818
Subject(s) - monomer , condensation polymer , terephthaloyl chloride , reactivity (psychology) , polymer chemistry , activation energy , kinetics , polymer , materials science , chloride , chemistry , chemical engineering , organic chemistry , engineering , medicine , alternative medicine , physics , pathology , quantum mechanics
The kinetics of polycondensation and copolycondensation of terephthaloyl chloride with numerous bisphenols in α‐chloronaphthalene solutions were examined. The values of activation energy E of the polycondensation processes were calculated. Isokinetic temperatures for different systems of monomers were determined. A series of syntheses of copolyesters at isokinetic temperature and other temperatures was carried out. The products obtained during the reaction were examined. It was found that at isokinetic temperature the composition of the products is independent of the extent of reaction, whereas at other temperatures it depends on the reactivity ratio of monomers used, as well as on the extent of reaction.