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Compatibility of epoxidized natural rubber with thermoplastic and thermosetting resins
Author(s) -
Kallitsis John K.,
Kalfoglou Nikos K.
Publication year - 1989
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.1989.070370212
Subject(s) - thermosetting polymer , epoxy , miscibility , compatibility (geochemistry) , materials science , natural rubber , copolymer , composite material , thermoplastic , bisphenol a , polymer chemistry , polymer
The compatibility behavior of epoxidized natural rubber (ENR) at two different degrees of epoxidation with hydroxyl‐containing polymeric resins was investigated. These included Novolac and Resole resins, the cured epoxy of bisphenol A (CER), and phenoxy. For each system, compositions covering the complete range were studied using the dynamic mechanical (DMA), DSC and phase‐contrast microscopy techniques. ENR/Novolac blends were compatible, ENR/Resole, and ENR/phenoxy semicompatible, and ENR/CER incompatible. The results were interpreted in terms of the acid character of the aromatic or aliphatic hydroxyl contained in the resin and a predictive compatibility scheme based on copolymer‐copolymer miscibility theory was tested.