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Crystallization and solid‐state polymerization of poly(aryl ester)s
Author(s) -
James Nirmala R,
Ramesh C,
Sivaram S
Publication year - 2004
Publication title -
polymer international
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.592
H-Index - 105
eISSN - 1097-0126
pISSN - 0959-8103
DOI - 10.1002/pi.1397
Subject(s) - differential scanning calorimetry , crystallization , aryl , crystallinity , polymerization , polymer chemistry , materials science , polymer , chemical engineering , organic chemistry , chemistry , composite material , alkyl , thermodynamics , physics , engineering
The crystallization and solid‐state polymerization (SSP) of poly(aryl ester)s was investigated. Oligomers with different end‐groups were prepared by degradation of commercially available poly(aryl ester)s. The SSP of these oligomers was carried out after crystallization and under reduced pressure, in the presence of various catalysts. Polymers were characterized by means of their inherent viscosities and thermal properties. It has been found that Ti(O i Pr) 4 was a better catalyst for SSP. The structures and morphologies of semicrystalline poly(aryl ester)s were investigated by X‐ray diffraction and differential scanning calorimetry (DSC). Copyright © 2004 Society of Chemical Industry