Study on superabsorbentcomposites. IX: Synthesis, characterization and swellingbehaviors of polyacrylamide/claycompositesbased on various clays

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

	Study on superabsorbentcomposites. IX: Synthesis, characterization and swellingbehaviors of polyacrylamide/claycompositesbased on various clays
	Zhang JP(张俊平); Wang AQ(王爱勤)
刊名	Reactive and Functional Polymers
	2007
卷号	67 期号:8 页码:737-745
关键词	Superabsorbentcomposite Clay kind Water absorbency
ISSN号	1381-5148
通讯作者	王爱勤 aqwang@licp.cas.cn
中文摘要	A series of clay-basedsuperabsorbentcomposite from acrylamide (AM) and various clays, such as attapulgite, kaolinite, mica, vermiculate and Na+-montmorillonite, was prepared by free-radical aqueous polymerization, using N,N′-methylenebisacrylamide (MBA) as a crosslinker and ammonium persulfate (APS) as an initiator, and then saponified with sodium hydroxide solution. In this paper, the reaction mechanism and thermal stability of the superabsorbentcomposites incorporated with various clays were characterized by FTIR, XRD and TGA, respectively. The effects of clay kind and clay content on equilibrium water absorbency of these composites were also investigated and compared. In addition, the influences of clay kind on comprehensive swellingbehaviors of the PAM/claysuperabsorbentcomposites were studied. The results indicated that the introduced clays could influence physicochemical properties of obtained superabsorbentcomposites. Mica could improve thermal stability of corresponding superabsorbentcomposites to the highest degree comparing with the other clays. The PAM/claysuperabsorbentcomposites incorporated with 10 wt% clay of various kinds were all endowed with equilibrium water absorbency of more than 1300 g g?1. The equilibrium water absorbency decreases with increasing clay content and correlates with the kind of clay. Attapulgite-basedsuperabsorbentcomposite was endowed with higher water absorbency in univalent cationic saline solution, however, the vermiculite- and the kaolinite-based ones acquired the highest water absorbency in CaCl2 and FeCl3 aqueous solution, respectively. Moreover, the superabsorbentcomposites incorporated with Na+-montmorillonite have higher swelling rate and that of doped with mica was endowed with higher reswelling capability.
学科主题	功能高分子
收录类别	SCI
资助信息	科技部863重大专项子课题(2005AA2Z4030)
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/362003/210]
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	Zhang JP,Wang AQ. Study on superabsorbentcomposites. IX: Synthesis, characterization and swellingbehaviors of polyacrylamide/claycompositesbased on various clays[J]. Reactive and Functional Polymers,2007,67(8):737-745.
APA	张俊平,&王爱勤.(2007).Study on superabsorbentcomposites. IX: Synthesis, characterization and swellingbehaviors of polyacrylamide/claycompositesbased on various clays.Reactive and Functional Polymers,67(8),737-745.
MLA	张俊平,et al."Study on superabsorbentcomposites. IX: Synthesis, characterization and swellingbehaviors of polyacrylamide/claycompositesbased on various clays".Reactive and Functional Polymers 67.8(2007):737-745.