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Chlorohydrin water-swellable rubber compatibilized by an amphiphilic graft copolymer. II. Effects of PVA-g-PBA and CPA on water-swelling behaviors

✍ Scribed by Zhihao Zhang; Guo Zhang; Dongfeng Li; Zhicheng Liu; Xinfang Chen

Publisher: John Wiley and Sons
Year: 1999
Tongue: English
Weight: 292 KB
Volume: 74
Category: Article
ISSN: 0021-8995
DOI: 10.1002/(sici)1097-4628(19991220)74:13<3145::aid-app17>3.0.co;2-x

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✦ Synopsis

A water-swellable rubber (WSR), compatibilized by the amphiphilic graft copolymer, has been prepared by blending chlorohydrin rubber (CHR) with crosslinked polyacrylate (CPA), Poly(vinyl alcohol)-g-poly(butyl acrylate) (PVA-g-PBA), precipitated silica (PSA), and poly(ethylene glycol) (PEG). The WSR was characterized by scanning electron micrography (SEM). The dependence of the water-absorbing ratio by weight, the water-swelling ratio by volume, and the percentage loss by weight on PVA-g-PBA and crosslinked polyacrylate contents was investigated. The effect of PVAg-PBA and crosslinked polyacrylate contents on second water-swelling behaviors and long-term water-retention behaviors were also studied.

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