Investigation on the interaction of sodium dodecyl sulfate with poly(ethylene oxide) by electron spin resonance and UV spectrum

doi:10.3866/PKU.WHXB20010412

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	Investigation on the interaction of sodium dodecyl sulfate with poly(ethylene oxide) by electron spin resonance and UV spectrum
	Hai, MT ; Han, BX ; Yan, HK
刊名	ACTA PHYSICO-CHIMICA SINICA
	2001-04-01
卷号	17 期号:4 页码:338-342
关键词	Poly(Ethylene Oxide) Sodium Dodecyl Sulfate Interaction Esr
ISSN号	1000-6818
DOI	10.3866/PKU.WHXB20010412
英文摘要	ESR and UV spectrum of the aqueous solution of sodium dodecyl sulfate(SDS)/poly(ethylene oxide) (PEO) were measured at room temperature respectively, the concentration of PEO was 0. 5% (mass fraction), and the concentration of SDS (m(SDS)) was up to 50 mmol . kg(-1). 2, 4-dinitrophylhydrazone of 2, 2, 6, 6-tetramethyl-4- piperidine-1-oxyl (Tempone-DMPH) was synthesized and used as ESR probe. The binding site of SDS-PEO interaction, the micropolarity and microviscosity information of the microenvironments have been determined by ESR. UV spectrum gives information on the environment of 2, 4-dinitrophylhydrazone group. The hyperfine coupling constant and the rotational correlation time of the spin probe reflect the microenvironment of the polymer-micelle aggregates. The micropolarity of the solutions decreases with increasing SDS concentration, the polymer-micelle aggregate forms a more compact structure at the binding site and the binding site between PEO and SDS micelles yields a strong increase of the microviscosity at the micelle-polymer interface. Spin probe is located near the surface of the micelle. 2, 4- dinitrophylhydrazone group may be adjacent to the sulphate groups, and the nitroxide group penetrates a small distance into the hydrocarbon core of the micelle. The critical aggregation concentration (CAC) and polymer saturation point (PSP) of SDS-0. 5 % PEO at room temperature are approximately 4 and 28 mmol . kg(-1), respectively.
语种	英语
出版者	PEKING UNIV PRESS
WOS记录号	WOS:000168268900012
内容类型	期刊论文
源URL	[http://ir.iccas.ac.cn/handle/121111/76695]
专题	中国科学院化学研究所
通讯作者	Hai, MT
作者单位	1.Zibo Univ, Dept Biol & Chem Engn, Zibo 255013, Peoples R China 2.Acad Sinica, Inst Chem, Beijing 100080, Peoples R China
推荐引用方式 GB/T 7714	Hai, MT,Han, BX,Yan, HK. Investigation on the interaction of sodium dodecyl sulfate with poly(ethylene oxide) by electron spin resonance and UV spectrum[J]. ACTA PHYSICO-CHIMICA SINICA,2001,17(4):338-342.
APA	Hai, MT,Han, BX,&Yan, HK.(2001).Investigation on the interaction of sodium dodecyl sulfate with poly(ethylene oxide) by electron spin resonance and UV spectrum.ACTA PHYSICO-CHIMICA SINICA,17(4),338-342.
MLA	Hai, MT,et al."Investigation on the interaction of sodium dodecyl sulfate with poly(ethylene oxide) by electron spin resonance and UV spectrum".ACTA PHYSICO-CHIMICA SINICA 17.4(2001):338-342.