QQ客服 官方微博 反馈留言

	Studies on microblock structure of am/dmbac cationic copolymers
	Wang Guixia1,2; Li Wangang1,2; Zhang Yuxi1; Li Zhenquan3; Song Xinwang3; Cao Xulong3; Wu Feipeng1
刊名	Acta polymerica sinica
	2010-04-20
期号	4页码:435-441
关键词	Cationic copolymer Reactivity ratio Hydrophobic association Microblock Sequence
ISSN号	1000-3304
通讯作者	Wang guixia()
英文摘要	The surface activity of cationic dmbac (dimethyl methacryloyloxyethyl benzyl ammonium chloride) was revealed by measuring surface tension and estimating of critical micelle concentration (cmc). the copolymerization of acrylamide (am) and dmbac was studied in aqueous solution at above and below cmc of dmbac, respectively. the reactivity ratios r(1) and r(2) were determined by the fineman-ross method. ir and (1)h-nmr spectra afford information about polymer structure. the compositions of copolymers were calculated by uv spectrophotometer. the intrinsic viscosity values of the copolymers were measured by the ubbelohde-type viscometer. molecular weight (m(w)) and polydispersity index (pdi) of the copolymers were measured by gel permeation chromatography (gpc). the effect of dmbac concentration on the microstructure of the copolymers was analyzed by (13)c-nmr and dsc spectra. the property of hydrophobic association of the copolymers was characterized by using pyrene fluorescence probe technique. the experimental results of copolymerization showed that the reactivity ratios of monomers were different at above and below cmc of dmbac, r(1)(am) = 0.65, r(2) (dmbac) = 1.41 and r(1) (am) = 0.74, r(2) (dmbac) = 0.91, respectively. these results suggested that dmbac monomers may distribute in a microblock sequence in the copolymer chain at above cmc of dmbac, and in a random sequence at below cmc of dmbac. the structures of copolymers were proved again by (13)c-nmr and dsc spectra. the copolymer cp-1 with microblock sequences showed stronger hydrophobically associating than the copolymer cp-2 with random sequences.
WOS关键词	POLYELECTROLYTE-SURFACTANT COMPLEXES ; HYDRODYNAMIC BEHAVIOR ; AQUEOUS-SOLUTIONS ; ACTIVE MONOMER ; ACRYLAMIDE ; METHACRYLATE ; HYDROLYSIS ; MOLECULES ; CHLORIDE
WOS研究方向	Polymer Science
WOS类目	Polymer Science
语种	英语
出版者	SCIENCE CHINA PRESS
WOS记录号	WOS:000277591700009
内容类型	期刊论文
URI标识	http://www.corc.org.cn/handle/1471x/2411158
专题	中国科学院大学
通讯作者	Wang Guixia
作者单位	1.Chinese Acad Sci, Lab Funct Polymer, Tech Inst Phys & Chem, Beijing 100190, Peoples R China 2.Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China 3.Sinopec Corp, Shengli Petr Adm Bur, Geol Sci Res Inst, Dongying 257015, Peoples R China
推荐引用方式 GB/T 7714	Wang Guixia,Li Wangang,Zhang Yuxi,et al. Studies on microblock structure of am/dmbac cationic copolymers[J]. Acta polymerica sinica,2010(4):435-441.
APA	Wang Guixia.,Li Wangang.,Zhang Yuxi.,Li Zhenquan.,Song Xinwang.,...&Wu Feipeng.(2010).Studies on microblock structure of am/dmbac cationic copolymers.Acta polymerica sinica(4),435-441.
MLA	Wang Guixia,et al."Studies on microblock structure of am/dmbac cationic copolymers".Acta polymerica sinica .4(2010):435-441.

个性服务

查看访问统计

相关权益政策

暂无数据

收藏/分享

除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。