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Study on the macrokinetics of poly(trimethylene terephthalate) polycondensation reaction
Author(s) -
Chen Kequan,
Tang Xiaozhen,
Chen Shangwei,
Fu Gang
Publication year - 2004
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.20138
Subject(s) - condensation polymer , activation energy , polymer chemistry , materials science , intrinsic viscosity , kinetics , order of reaction , reaction rate constant , viscosity , reaction rate , reaction mechanism , chemical engineering , catalysis , chemistry , polymer , organic chemistry , composite material , physics , quantum mechanics , engineering
The macrokinetics of poly(trimethylene terephthalate) (PTT) polycondensation reaction during the high‐vacuum process was studied. The results showed that PTT polycondensation reaction may be considered as a second‐order reaction and thermal degradation is negligible in mathematical handling. The intrinsic viscosity versus time undergoes two different processes according to temperature. The apparent reaction rate constants and apparent activation energy of PTT polycondensation reaction are smaller than those of PET. Under efficient stirring, PTT polycondensation reaction is still reaction‐controlled and the role of devolatilization could be neglected even during the high‐vacuum process. © 2004 Wiley Periodicals, Inc. J Appl Polym Sci 92: 1765–1770, 2004