Curing kinetics and reaction-induced homogeneity in networks of poly(4-vinyl phenol) and diglycidylether epoxide cured with amine

Chean Cheng Su, E. M. Woo, Yin Ping Huang

Research output: Contribution to journalArticle

21 Citations (Scopus)

Abstract

Mixtures of diglycidyl ether of bisphenol-A (DGEBA) epoxy resin with poly(4-vinyl phenol) (PVPh) of various compositions were examined with a differential scanning calorimeter (DSC), using the curing agent 4,4′-diaminodiphenylsulfone (DDS). The phase morphology of the cured epoxy blends and their curing mechanisms depended on the reactive additive, PVPh. Cured epoxy/ PVPh blends exhibited network homogeneity based on a single glass transition temperature (Tg) over the whole composition range. Additionally, the morphology of these cured PVPh/epoxy blends exhibited a homogeneous network when observed by optical microscopy. Furthermore, the DDS-cure of the epoxy blends with PVPh exhibited an autocatalytic mechanism. This was similar to the neat epoxy system, but the reaction rate of the epoxy/polymer blends exceeded that of neat epoxy. These results are mainly attributable to the chemical reactions between the epoxy and PVPh, and the regular reactions between DDS and epoxy.

Original languageEnglish
Pages (from-to)1-10
Number of pages10
JournalPolymer Engineering and Science
Volume45
Issue number1
DOIs
Publication statusPublished - 2005 Jan 1

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Polymers and Plastics
  • Materials Chemistry

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