Preparation, swelling, and stimuli-responsive characteristics of superabsorbent nanocomposites based on carboxymethyl cellulose and 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, swelling, and stimuli-responsive characteristics of superabsorbent nanocomposites based on carboxymethyl cellulose and rectorite
	Wang WB(王文波); Wang AQ(王爱勤)
刊名	Polymers for Advanced Technologies
	2011
卷号	22 期号:12 页码:1602-1611
关键词	carboxymethyl cellulose rectorite superabsorbent nanocomposite swelling stimuli-responsive
ISSN号	1042-7147
通讯作者	王爱勤 aqwang@licp.cas.cn
中文摘要	Utilization of naturally available raw materials for the fabrication of eco-friendly functional materials has long been desired. In this work, a series of superabsorbent nanocomposites were prepared by radical solution copolymerization of sodium carboxymethyl cellulose (CMC), partially neutralized acrylic acid (NaA), and rectorite (REC) in the presence of initiator ammonium persulfate (APS) and crosslinker N,N'-methylene-bis-acrylamide (MBA). The optimal reaction variables including the mass ratio of acrylic acid (AA) to CMC, MBA concentration, and REC content were explored. FTIR spectra confirmed that NaA had been grafted onto CMC and REC participated in polymerization. REC was exfoliated and uniformly dispersed in the CMC-g-PNaA matrix without agglomeration as shown by XRD, TEM, and SEM analysis. The thermal stability, swelling capabilities, and rate of the nanocomposites were improved after introducing REC, and the gel strength greatly depended on the concentration of crosslinker MBA. The nanocomposite showed excellent responsive properties and reversible On-Off switching characteristics in various saline, pH, and hydrophilic organic solvent/water solutions, which provided great possibility to extend the application domain of the superabsorbent nanocomposites such as drug delivery system.
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:000298175400007
公开日期	2012-08-30
内容类型	期刊论文
源URL	[http://210.77.64.217/handle/362003/72]
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, swelling, and stimuli-responsive characteristics of superabsorbent nanocomposites based on carboxymethyl cellulose and rectorite[J]. Polymers for Advanced Technologies,2011,22(12):1602-1611.
APA	王文波,&王爱勤.(2011).Preparation, swelling, and stimuli-responsive characteristics of superabsorbent nanocomposites based on carboxymethyl cellulose and rectorite.Polymers for Advanced Technologies,22(12),1602-1611.
MLA	王文波,et al."Preparation, swelling, and stimuli-responsive characteristics of superabsorbent nanocomposites based on carboxymethyl cellulose and rectorite".Polymers for Advanced Technologies 22.12(2011):1602-1611.