Synthesis, swelling and responsive properties of a new composite hydrogel based on hydroxyethyl cellulose and medicinal stone

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

	Synthesis, swelling and responsive properties of a new composite hydrogel based on hydroxyethyl cellulose and medicinal stone
	Wang WB(王文波); Wang AQ(王爱勤); Kang YR(康玉茹)
刊名	Composites Part B: Engineering
	2011
卷号	42 期号:4 页码:809-818
关键词	A. Polymer-matrix composites (PMCs) D. Thermal analysis
ISSN号	1359-8368
通讯作者	王爱勤 aqwang@licp.cas.cn
中文摘要	In this study, a series of pH- and saline-responsive composite hydrogels were prepared by a facile free radical graft copolymerization amongst hydroxyethyl cellulose (HEC), sodium acrylate (NaA) and medicinal stone (MS). Fourier transform infrared spectroscopy (FTIR) and Thermogravimetric/Differential thermal analysis (TG/DTA) confirmed NaA was grafted onto HEC and MS participate in polymerization, and presented the improved thermal stability. Field emission scanning electron micro-scope (FESEM), Energy dispersive spectroscopy (EDS), Elemental map (EM) and Transmission electron microscopy (TEM) analyses revealed a better distribution of MS in the HEC-g-PNaA matrix. Introducing 10 wt% MS greatly enhanced the swelling capacity by 400% (from 162 to 810 g/g), and also enhanced by 117% (from 162 to 352 g/g) even MS content reached 50 wt%. Also, the initial swelling rate was improved by incorporating MS, but decreased with enhancing the ion strength. The highly reversible On-Off switching pH and saline-responsive region of the hydrogel was clearly extended after forming composite. In addition, the intriguing ''overflowing'' swelling behaviour was observed in aqueous solution of dimethyl sulfoxide (DMSO).
学科主题	功能高分子
收录类别	SCI
资助信息	国家自然科学基金项目(20877077)
语种	英语
WOS记录号	WOS:000289880100022
公开日期	2012-08-30
内容类型	期刊论文
源URL	[http://210.77.64.217/handle/362003/74]
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,Kang YR. Synthesis, swelling and responsive properties of a new composite hydrogel based on hydroxyethyl cellulose and medicinal stone[J]. Composites Part B: Engineering,2011,42(4):809-818.
APA	王文波,王爱勤,&康玉茹.(2011).Synthesis, swelling and responsive properties of a new composite hydrogel based on hydroxyethyl cellulose and medicinal stone.Composites Part B: Engineering,42(4),809-818.
MLA	王文波,et al."Synthesis, swelling and responsive properties of a new composite hydrogel based on hydroxyethyl cellulose and medicinal stone".Composites Part B: Engineering 42.4(2011):809-818.