Mixed micelles of polyethylene glycol (23) lauryl ether with ionic surfactants studied by proton 1D and 2D 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）

	Mixed micelles of polyethylene glycol (23) lauryl ether with ionic surfactants studied by proton 1D and 2D NMR
	Gao, HC ; Zhao, S ; Mao, SZ ; Yuan, HZ ; Yu, JY ; Shen, LF ; Du, YR
刊名	JOURNAL OF COLLOID AND INTERFACE SCIENCE
	2002-05-01
卷号	249 期号:1 页码:200-208
关键词	CTAB SDS Brij-35 H-1 NMR relaxation 2D NOESY mixed micelle
英文摘要	H-1 NMR chemical shift, spin-lattice relaxation time, spin-spin relaxation time, self-diffusion coefficient, and two-dimensional nuclear Overhauser enhancement (2D NOESY) measurements have been used to study the nonionic-ionic surfactant mixed micelles. Cetyl trimethyl ammonium bromide (CTAB) and sodium dodecyl sulfate (SDS) were used as the ionic surfactants and polyethylene glycol (23) lauryl ether (Brij-35) as the nonionic surfactant. The two systems are both with varying molar ratios of CTAB/Brij-35 (C/B) and SDS/Brij-35 (S/B) ranging from 0.5 to 2, respectively, at a constant concentration of 6 mM for Brij-35 in aqueous solutions. Results give information about the relative arrangement of the surfactant molecules in the mixed micelles. In the former system, the trimethyl groups attached to the polar heads of the CTAB molecules are located between the first oxy-ethylene groups next to the hydrophobic chains of Brij-35 molecules. These oxy-ethylene groups gradually move outward from the hydrophobic core of the mixed micelle with an increase in C/B in the mixed solution. In contrast to the case of the CTAB/Triton X-100 system, the long flexible hydrophilic poly oxy-ethylene chains, which are in the exterior part of the mixed micelles, remain coiled, but looser, surrounding the hydrophobic core, There is almost no variation in conformation of the hydrophilic chains of Brij-35 molecules in the mixed micelles of the SDS/Brij-35 system as the S/B increases. The hydrophobic chains of both CTAB and SDS are co-aggregated with Brij-35, respectively, in their mixed micellar cores. (C) 2002 Elsevier Science (USA).
WOS标题词	Science & Technology ; Physical Sciences
类目[WOS]	Chemistry, Physical
研究领域[WOS]	Chemistry
关键词[WOS]	NUCLEAR MAGNETIC-RESONANCE ; TRITON X-100 ; NONIONIC SURFACTANTS ; H-1-NMR RELAXATION ; AQUEOUS-SOLUTION ; SELF-DIFFUSION ; SPECTROSCOPY ; SCATTERING ; BROMIDE ; MOTION
收录类别	SCI
语种	英语
WOS记录号	WOS:000175355700025
公开日期	2015-12-08
内容类型	期刊论文
源URL	[http://ir.wipm.ac.cn/handle/112942/8683]
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,Zhao, S,Mao, SZ,et al. Mixed micelles of polyethylene glycol (23) lauryl ether with ionic surfactants studied by proton 1D and 2D NMR[J]. JOURNAL OF COLLOID AND INTERFACE SCIENCE,2002,249(1):200-208.
APA	Gao, HC.,Zhao, S.,Mao, SZ.,Yuan, HZ.,Yu, JY.,...&Du, YR.(2002).Mixed micelles of polyethylene glycol (23) lauryl ether with ionic surfactants studied by proton 1D and 2D NMR.JOURNAL OF COLLOID AND INTERFACE SCIENCE,249(1),200-208.
MLA	Gao, HC,et al."Mixed micelles of polyethylene glycol (23) lauryl ether with ionic surfactants studied by proton 1D and 2D NMR".JOURNAL OF COLLOID AND INTERFACE SCIENCE 249.1(2002):200-208.