Cure kinetics and inter-domain etherification in an amine-cured phenoxy/epoxy system

H. Kun Hseih, Chean C. Su, Eamor M. Woo

研究成果: Article同行評審

38 引文 斯高帕斯(Scopus)

摘要

The aim of this study was to examine possible effects of the hydroxyl group (-OH) in phenoxy-type polymers on the cure reactions and network morphology of a crosslinking epoxy system, tetraglycidyl-4,4′-diaminodiphenylmethane (TGDDM) with diaminodiphenylsulfone (DDS). Similar to the case for a pure, unmodified TGDDM/DDS epoxy counterpart, an autocatalytic reaction kinetic model was found to describe the cure behaviour of the phenoxy/TGDDM/DDS mixtures up to the vitrification point. At the early stage of cure, the -OH group in the phenoxy might exert a catalytic effect for epoxide ring opening between epoxy and the amine. Subsequently, at later cure stages where phase domain boundaries were forming and the amine groups were largely depleted, the -OH groups of the phenoxy phase domain began to react with the residual epoxide groups in the epoxy domains. It is this later-stage reaction that led to interlinking chemical bonding between the phenoxy and epoxy phases at the domain boundaries.

原文English
頁(從 - 到)2175-2183
頁數9
期刊polymer
39
發行號11
DOIs
出版狀態Published - 1998

All Science Journal Classification (ASJC) codes

  • Organic Chemistry
  • Polymers and Plastics
  • Materials Chemistry

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