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Chlorohydrin water-swellable rubber compatibilized by an amphiphilic graft copolymer. III. Effects of PEG and PSA on water-swelling behavior

✍ Scribed by Zhihao Zhang; Guo Zhang; Caiqi Wang; Dong Liu; Zhicheng Liu; Xinfang Chen

Publisher: John Wiley and Sons
Year: 2001
Tongue: English
Weight: 211 KB
Volume: 79
Category: Article
ISSN: 0021-8995
DOI: 10.1002/1097-4628(20010401)79:14<2509::aid-app1059>3.0.co;2-0

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✦ Synopsis

Chlorohydrin water-swellable rubber-composed of chlorohydrin rubber (CHR), crosslinked polyacrylate (CPA), the amphiphilic compatibilizer poly(vinyl alcohol)-g-poly(butyl acrylate) (PVA-g-PBA), precipitated silica (PSA), and poly(ethylene glycol) (PEG)-was prepared. The dispersion of PEG in the blend was characterized by wide-angle X-ray diffraction (WAXD). The dependence of the water absorbing ratio by weight, the water-swelling ratio by volume, and the percentage loss by weight on PEG and PSA contents were investigated. The effects of PEG and PSA on the second water-swelling behaviors and long-term water-retention behaviors were also studied. Optimums for the water-absorbing and water-swelling abilities within the range of the experiment were obtained.

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