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Synthesis of inhomogeneous modified polycyanurates by reactive blending of bisphenol a dicyanate ester and polyoxypropylene glycol
Author(s) -
Fainleib Alexander,
Grigoryeva Olga,
Hourston Douglas
Publication year - 2001
Publication title -
macromolecular symposia
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.257
H-Index - 76
eISSN - 1521-3900
pISSN - 1022-1360
DOI - 10.1002/1521-3900(200102)164:1<429::aid-masy429>3.0.co;2-i
Subject(s) - bisphenol a , plasticizer , monomer , materials science , glass transition , phase (matter) , polymer chemistry , network structure , mixed phase , chemical engineering , polymer , composite material , chemistry , organic chemistry , epoxy , engineering , machine learning , computer science
A series of polycyanurate networks (PCN), based on the dicyanate of bisphenol A monomer (DCBA), was synthesized in the presence of different contents of polyoxypropylene glycol (PPG). The formation of very finely divided morphologies with highly interpenetrated phases, i.e. a PCN‐ rich phase, a mixed phase of PCN/PPG components and a PPG‐rich phase was determined. It is supposed that the lowering of the glass transition temperature of modified network matrix at increasing PPG content is due to a) PPG incorporation, b) decrease of the final DCBA conversion and c) the increase of percentage of non‐incorporated PPG, which acts as plasticizer.