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Vinyl‐terminated oligomeric ethers: A study of the crosslinking process
Author(s) -
Barton S. J.,
Ghotra J. S.,
Matthews A. E.,
Pritchard G.
Publication year - 1991
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.1991.070420105
Subject(s) - copolymer , polymer chemistry , benzoyl peroxide , materials science , differential scanning calorimetry , styrene , thermosetting polymer , catalysis , thermal stability , polymer , polymerization , chemistry , organic chemistry , composite material , physics , thermodynamics
A thermosetting resin consisting of a mixture of vinyl‐terminated oligomeric ethers was prepared by a two‐step synthesis. This required the reaction of 1,4‐bis (chloromethyl) benzene with the potassium salt of bisphenol A, and subsequent vinylation of the chloromethyl end groups by means of a Wittig reaction. The linear vinyl prepolymers were thermally crosslinked through their reactive styryl end groups (without the addition of catalyst) to produce castings and woven glass laminates. A study of the crosslinking process was carried out by differential scanning calorimetry (DSC). The water absorption and the thermooxidative stability of the crosslinked polymer were investigated. A styrene solution of the oligomeric ethers was also crosslinked, using benzoyl peroxide as a catalyst. The moisture absorption characteristics of the crosslinked styrene copolymer were compared with those of the crosslinked homopolymer. Both substances showed hydrophobic character.