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Effect of diffusional limitations on the gelation of cyanate ester resins
Author(s) -
Deng Yong,
Martin George C.
Publication year - 1997
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/(sici)1097-4628(19970404)64:1<115::aid-app10>3.0.co;2-3
Subject(s) - cyanate ester , cyanate , gel point , polymer chemistry , diffusion , materials science , chemical engineering , chemistry , polymer , organic chemistry , thermodynamics , physics , epoxy , engineering
The effect of diffusion control‐induced unequal reactivities of functional groups on the gelation of cyanate ester resins was analyzed. By introducing differentiation into the recursive approach, a gelation model was developed to calculate the gel points of systems under diffusional limitations. Modeling results for a Zn‐catalyzed cyanate resin show that the unequal reactivities have a significant effect on the gel point and the gelation is delayed to a higher conversion. However, other factors, which may include localized reactions and cycle formation, also contribute to the delay of gelation. © 1997 John Wiley & Sons, Inc. J Appl Polym Sci 64: 115–125, 1997