Swelling behavior of amphiphilic gels based on hydrophobically modified   dimethylaminoethyl methacrylate

doi:10.1016/j.polymer.2009.08.018

CORC > 北京大学 > 化学与分子工程学院

	Swelling behavior of amphiphilic gels based on hydrophobically modified dimethylaminoethyl methacrylate
	Li, Cancan ; Xu, Ling ; Zhai, Maolin ; Peng, Jing ; Yang, Chao ; Li, Jiuqiang ; Wei, Genshuan
刊名	polymer
	2009
关键词	Amphiphilic gels Temperature-stimuli responsive Anti polyelectrolyte effect RADICAL POLYMERIZATION HYDROGELS POLYELECTROLYTE NETWORKS POLYMERS COLLAPSE COPOLYMERS DEPENDENCE HYDRATION KINETICS
DOI	10.1016/j.polymer.2009.08.018
英文摘要	The amphiphilic gels based on hydrophobically modified dimethylaminoethyl methacrylate with different 1-bromoalkanes (1-CnH2n+1Br, n = 2, 4, 6, 8, 12) were synthesized by radiation-induced polymerization and crosslinking. The length of alkyl side chains had significant influence on the swelling behavior of the resulting gels. The swelling degree of the gels decreased with the increase of side chain length, and the gel hardly swelled when n = 12. The effect of temperature and ionic strength on the swelling behavior of the resulting gels revealed that (1) the gels with longer side chains (n >= 8) had upper critical solution temperature, while other gels were not thermo-sensitive. (2) Anti polyelectrolyte effect was observed when immersing the gels (n >= 8) in NaCl solutions in certain concentration range. The dramatic difference in swelling behavior was attributed to the different gel structures. The gels with short side chains (n <= 6) had cellular structure of normal polyelectrolyte gels. The gels (n >= 8) had an aggregation gel structure caused by the hydrophobic interaction among alkyl groups and the formation of ion-cluster between tetra-alkyl ammonium cation and Br-, which had been analyzed with the aid of SEM, Br--selective electrode and fluorescence molecular probe. (C) 2009 Elsevier Ltd. All rights reserved.; http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000272959300018&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=8e1609b174ce4e31116a60747a720701 ; Polymer Science; SCI(E); EI; 9; ARTICLE; 20; 4888-4894; 50
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/151380]
专题	化学与分子工程学院工学院
推荐引用方式 GB/T 7714	Li, Cancan,Xu, Ling,Zhai, Maolin,et al. Swelling behavior of amphiphilic gels based on hydrophobically modified dimethylaminoethyl methacrylate[J]. polymer,2009.
APA	Li, Cancan.,Xu, Ling.,Zhai, Maolin.,Peng, Jing.,Yang, Chao.,...&Wei, Genshuan.(2009).Swelling behavior of amphiphilic gels based on hydrophobically modified dimethylaminoethyl methacrylate.polymer.
MLA	Li, Cancan,et al."Swelling behavior of amphiphilic gels based on hydrophobically modified dimethylaminoethyl methacrylate".polymer (2009).