期刊
INTERNATIONAL JOURNAL OF POLYMERIC MATERIALS
卷 60, 期 13, 页码 1015-1025出版社
TAYLOR & FRANCIS AS
DOI: 10.1080/00914037.2011.557807
关键词
bentonite; superabsorbent polymer; water absorbency; xanthan gum
A novel poly(acrylic acid)/modified bentonite superabsorbent polymer (SAP) was synthesized through chemical crosslinking by a polymerization technique in a complete aqueous environment. This SAP was fabricated effectively by dispersing modified bentonite in a monomeric solution, using N,N'-methylenebisacrylamide as crosslinker and ammonium persulfate as initiator. Fourier transform infrared (FTIR) spectral analysis showed that the XG chains had intercalated into bentonite sheets. The influence of crosslinking density and XG content were investigated. Results showed modified bentonite not only effectively increases water absorbency, but also improves water retention ability. This can be further used as a carrier matrix for the development of a drug delivery system.
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