Properties of polyethylene glycol(23) lauryl ether with cetyltrimethylammonium bromide in mixed aqueous solutions studied by self-diffusion coefficient NMR

CORC > 武汉物理与数学研究所 > 中国科学院武汉物理与数学研究所 > 2011年以前论文发表（包括2011年）

	Properties of polyethylene glycol(23) lauryl ether with cetyltrimethylammonium bromide in mixed aqueous solutions studied by self-diffusion coefficient NMR
	Gao, HC ; Zhu, RX ; Yang, XY ; Mao, SZ ; Zhao, S ; Yu, JY ; Du, YR
刊名	JOURNAL OF COLLOID AND INTERFACE SCIENCE
	2004-05-15
卷号	273 期号:2 页码:626-631
关键词	self-diffusion coefficient critical micelle concentrations composition of mixed micelles cetyltrimethylammonium bromide (CTAB) polyethylene glycol (23) lauryl ether (Brij-35) interaction parameter surface tension
英文摘要	NMR self-diffusion coefficient measurements have been used to study the properties of polyethylene glycol (23) lauryl ether (Brij-35) with cetyltrimethylammonium bromide (CTAB) in the mixed aqueous solutions with different mole fractions of CTAB. By fitting the self-diffusion coefficients to the two-state exchange model, the critical micelle concentrations of the two solutes in the mixed solutions (cmc(1)* and cmc(2)) were obtained. The critical mixed micelle concentrations (cmc) were then evaluated by the sum of cmc(1)* and cmc(2), which are in good agreement with the results measured by the Surface tension method. The cmc values are lower than those of the ideal case of mixing. which indicates that the behavior of the CTAB/Brij-35 system is nonideal. Moderate interactions between CTAB and Brij-35 in their mixtures can be deduced from the interaction parameters (beta(M)) based on the cmc* obtained by the NMR self-diffusion method. The compositions (x(1)) of the mixed micelles at different total surfactant concentrations were also evaluated. By using these results, a possible mechanism of mixed micellar formation and a picture of the formation of nonsimultaneous CTAB/Brij-35 binary mixed micelle were proposed. In contrast to the case of CTAB/TX-100 system, Brij-35 molecules have a tendency to form micelles first at any mole fraction of CTAB. The mixed micellar self-diffusion coefficients (D-m) increase slightly at lower CTAB molar ratios, and then speed up with increasing CTAB mole fraction. (C) 2004 Elsevier Inc. All rights reserved.
WOS标题词	Science & Technology ; Physical Sciences
类目[WOS]	Chemistry, Physical
研究领域[WOS]	Chemistry
关键词[WOS]	SURFACE-ACTIVE AGENTS ; NONIONIC SURFACTANTS ; IONIC SURFACTANTS ; FIELD GRADIENT ; MICELLES ; MIXTURES ; MICELLIZATION ; BINARY
收录类别	SCI
语种	英语
WOS记录号	WOS:000220999000037
公开日期	2015-12-08
内容类型	期刊论文
源URL	[http://ir.wipm.ac.cn/handle/112942/8998]
专题	武汉物理与数学研究所_2011年以前论文发表（包括2011年）
作者单位	1.Chinese Acad Sci, Wuhan Inst Phys & Math, State Key Lab Magnet Resonance & Atom & Mol Phys, Wuhan 430071, Peoples R China 2.Chinese Acad Sci, Tech Inst Phys & Chem, Beijing 100101, Peoples R China
推荐引用方式 GB/T 7714	Gao, HC,Zhu, RX,Yang, XY,et al. Properties of polyethylene glycol(23) lauryl ether with cetyltrimethylammonium bromide in mixed aqueous solutions studied by self-diffusion coefficient NMR[J]. JOURNAL OF COLLOID AND INTERFACE SCIENCE,2004,273(2):626-631.
APA	Gao, HC.,Zhu, RX.,Yang, XY.,Mao, SZ.,Zhao, S.,...&Du, YR.(2004).Properties of polyethylene glycol(23) lauryl ether with cetyltrimethylammonium bromide in mixed aqueous solutions studied by self-diffusion coefficient NMR.JOURNAL OF COLLOID AND INTERFACE SCIENCE,273(2),626-631.
MLA	Gao, HC,et al."Properties of polyethylene glycol(23) lauryl ether with cetyltrimethylammonium bromide in mixed aqueous solutions studied by self-diffusion coefficient NMR".JOURNAL OF COLLOID AND INTERFACE SCIENCE 273.2(2004):626-631.