Abnormal interfacial tension behavior of alkanediyl-alpha,omega-bis(dodecyldimethylammonium bromide) gemini surfactants

doi:10.1016/j.colsurfa.2009.12.032

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	Abnormal interfacial tension behavior of alkanediyl-alpha,omega-bis(dodecyldimethylammonium bromide) gemini surfactants
	Deng, Manli; Li, Jia; Liu, Jun; Ma, Xiaojing; Wang, Yilin
刊名	COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
	2010-03-05
卷号	356 期号:1-3 页码:97-103
关键词	Gemini Surfactant Interfacial Tension Polyacrylamide
ISSN号	0927-7757
DOI	10.1016/j.colsurfa.2009.12.032
英文摘要	The interfacial property of cationic ammonium gemini surfactants with the structure of [C(12)H(25)(CH(3))(2)N(CH(2))(S)N(CH(3))(2)C(12)H(25)]Br(2) (S=3, 4, 6, 10, and 12), referred to as C(12)C(S)C(12)Br(2), has been studied at the n-heptane/water interface as a function of the surfactant concentration. The interfacial tension vs surfactant concentration curves show an apparent minimum for the homologues with S >= 6. This behavior may be resulted from conformational and location changes of the spacer adsorbed at the interface due to its flexibility as well as the hydrophobic environment provided by the sublayer composed of gemini surfactant aggregates. In addition, the interfacial tension at the interface between n-heptane and the aqueous solution of C(12)C(6)C(12)Br(2) with polyacrylamide (PAM) and hydrophobically modified polyacrylamide (HMPAM) has been studied to aid the understanding on the adsorption mechanism proposed for the abnormal interfacial behavior of C(12)C(S)C(12)Br(2) surfactants. The interfacial tension is reduced significantly by the C(12)C(6)C(12)Br(2)/PAM mixture at very low concentration of C(12)C(6)C(12)Br(2). For C(12)CrC(12)Br(2)/HMPAM, no minimum is shown in the interfacial tension curve and poorer efficiency in reducing interfacial tension is observed. (C) 2010 Elsevier B.V. All rights reserved.
语种	英语
出版者	ELSEVIER SCIENCE BV
WOS记录号	WOS:000275351400016
内容类型	期刊论文
源URL	[http://ir.iccas.ac.cn/handle/121111/70965]
专题	中国科学院化学研究所
通讯作者	Wang, Yilin
作者单位	Chinese Acad Sci, Inst Chem, Key Lab Colloid & Interface Sci, Beijing 100190, Peoples R China
推荐引用方式 GB/T 7714	Deng, Manli,Li, Jia,Liu, Jun,et al. Abnormal interfacial tension behavior of alkanediyl-alpha,omega-bis(dodecyldimethylammonium bromide) gemini surfactants[J]. COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS,2010,356(1-3):97-103.
APA	Deng, Manli,Li, Jia,Liu, Jun,Ma, Xiaojing,&Wang, Yilin.(2010).Abnormal interfacial tension behavior of alkanediyl-alpha,omega-bis(dodecyldimethylammonium bromide) gemini surfactants.COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS,356(1-3),97-103.
MLA	Deng, Manli,et al."Abnormal interfacial tension behavior of alkanediyl-alpha,omega-bis(dodecyldimethylammonium bromide) gemini surfactants".COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS 356.1-3(2010):97-103.