Preparation, characterization and properties of superabsorbent nanocomposites based on natural guar gum and modified rectorite

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, characterization and properties of superabsorbent nanocomposites based on natural guar gum and modified rectorite
	Wang WB(王文波); Wang AQ(王爱勤)
刊名	Carbohydrate Polymers
	2009
卷号	77 期号:4 页码:891-897
关键词	Superabsorbent nanocomposites Guar gum Rectorite Exfoliation Intercalation Swelling
ISSN号	0144-8617
通讯作者	王爱勤 aqwang@licp.cas.cn
中文摘要	Novel guar gum-g-poly(sodium acrylate)/rectorite (GG-g-PNaA/REC) superabsorbent nanocomposites were prepared in aqueous solution using guar gum (GG), partially neutralized acrylic acid (NaA), acidified rectorite (H+-REC) and organified rectorite (CTA+-REC) by cetyltrimethylammonium bromide (CTAB) as raw materials, ammonium persulfate (APS) as initiator and N,N0-methylenebisacrylamide (MBA) as crosslinker. FTIR spectra confirmed that NaA had been grafted onto GG chains and the AOH groups of REC participated in polymerization reaction. Exfoliated nanocomposite was obtained for H+-REC and intercalated structure was formed for CTA+-REC as shown by XRD results. SEM observations show REC has been uniformly dispersed in polymeric matrix. Effects of HCl concentration, organification degree of CTA+-REC and content of REC on swelling capabilities were investigated and the swelling kinetics of nanocomposites was evaluated. Results indicate that modifying REC by acidification and organification can improve swelling properties of the resultant nanocomposites, and GG-g-PNaA/CTA+-REC exhibited higher swelling capability and swelling rate contrast to GG-g-PNaA/H+-REC.
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
WOS记录号	WOS:000267188000029
公开日期	2012-09-02
内容类型	期刊论文
源URL	[http://210.77.64.217/handle/362003/156]
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 WB,Wang AQ. Preparation, characterization and properties of superabsorbent nanocomposites based on natural guar gum and modified rectorite[J]. Carbohydrate Polymers,2009,77(4):891-897.
APA	王文波,&王爱勤.(2009).Preparation, characterization and properties of superabsorbent nanocomposites based on natural guar gum and modified rectorite.Carbohydrate Polymers,77(4),891-897.
MLA	王文波,et al."Preparation, characterization and properties of superabsorbent nanocomposites based on natural guar gum and modified rectorite".Carbohydrate Polymers 77.4(2009):891-897.