Preparation and Swelling bahavior of chitosan-g-poly (acrylic acid)/muscovite superabsorbent composites

CORC > 兰州化学物理研究所 > 中国科学院兰州化学物理研究所 > 环境材料与生态化学研究发展中心

	Preparation and Swelling bahavior of chitosan-g-poly (acrylic acid)/muscovite superabsorbent composites
	Wang AQ(王爱勤)
刊名	Iranian Polymer Journal
	2010
卷号	19 期号:2 页码:131-141
关键词	superabsorbent composite ion-exchanged muscovite graft copolymerization swelling behaviour water absorbency.
ISSN号	1026-1265
通讯作者	王爱勤 aqwang@licp.cas.cn
中文摘要	A series of novel chitosan-g-poly(acrylic acid)/muscovite (CTS-g-PAA/MVT) granular superabsorbent composites were synthesized by free-radical graft polymerization in aqueous solution. The effects of different ion-exchanged MVT on equilibrium water absorbency, swelling rate and swelling behaviour in various cationic saline solutions and different pH solutions of superabsorbent composites were systematically investigated under the same preparation conditions. The superabsorbents doped with different ion-exchanged MVT were characterized by Fourier transform infrared spectroscopy (FTIR), X-ray fluorescence spectrometry (XRF) and scanning electron microscopy (SEM). FTIR spectroscopy confirmed that AA has been grafted onto CTS and -OH groups of MVT seem to have participated in this reaction, simultaneously. These composites show good dispersion and favourable compatibility of inorganic and organic phases observed in SEM photographs. The introduction of ion-exchanged MVT into chitosan-g-poly(acrylic acid) polymeric network could improve water absorbency and swelling rate compared to those of the MVT. It is found that the swelling behaviour of these composites depends on the concentrations of NaCl, CaCl2, and FeCl3 solutions; as by increasing the concentration from 0.01 to 10 mM leads to gradual decrease in the swelling rates. All prepared composite samples demonstrate similar swelling behaviour at different pH, while the equilibrium water absorbency of the samples is kept roughly constant in pH range 4-10.
学科主题	功能高分子
收录类别	SCI
资助信息	科技部863项目(2006AA03Z0454,2006AA100215)
语种	英语
公开日期	2012-09-02
内容类型	期刊论文
源URL	[http://210.77.64.217/handle/362003/132]
专题	兰州化学物理研究所_环境材料与生态化学研究发展中心
推荐引用方式 GB/T 7714	Wang AQ. Preparation and Swelling bahavior of chitosan-g-poly (acrylic acid)/muscovite superabsorbent composites[J]. Iranian Polymer Journal,2010,19(2):131-141.
APA	王爱勤.(2010).Preparation and Swelling bahavior of chitosan-g-poly (acrylic acid)/muscovite superabsorbent composites.Iranian Polymer Journal,19(2),131-141.
MLA	王爱勤."Preparation and Swelling bahavior of chitosan-g-poly (acrylic acid)/muscovite superabsorbent composites".Iranian Polymer Journal 19.2(2010):131-141.