Two cloud-point phenomena in tetrabutylammonium perfluorooctanoate   aqueous solutions: Anomalous temperature-induced phase and structure   transitions

doi:10.1021/jp045283m

CORC > 北京大学 > 化学与分子工程学院

	Two cloud-point phenomena in tetrabutylammonium perfluorooctanoate aqueous solutions: Anomalous temperature-induced phase and structure transitions
	Yan, P ; Huang, J ; Lu, RC ; Jin, C ; Xiao, JX ; Chen, YM
刊名	journal of physical chemistry b
	2005
关键词	ANIONIC SURFACTANTS MICELLAR-SOLUTIONS DODECYL-SULFATE BEHAVIOR SYSTEMS COUNTERION MIXTURES SEPARATION CHLORIDE BROMIDE
DOI	10.1021/jp045283m
英文摘要	This paper reported the phase behavior and aggregate structure of tetrabutylammonium perfluorooctanoate (TBPFO), determined by differential scanning calorimeter, electrical conductivity, static/dynamic light scattering, and theology methods. We found that above a certain concentration the TBPFO solution showed anomalous temperature-dependent phase behavior and structure transitions. Such an ionic surfactant solution exhibits two cloud points. When the temperature was increased, the solution turned from a homogeneous-phase to a liquid-liquid two-phase system, then to another homogeneous-phase, and finally to another liquid-liquid two-phase system. In the first homogeneous-phase region, the aggregates of TBPFO were rodlike micelles and the solution was Newtonian fluid. While in the second homogeneous-phase region, the aggregates of TBPFO were large wormlike micelles, and the solution behaved as pseudoplastic fluid that also exhibited viscoelastic behavior. We thought that the first cloud point might be caused by the "bridge" effect of the tetrabutylammoniurn counterion between the micelles and the second one by the formation of the micellar network.; http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000227734500059&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=8e1609b174ce4e31116a60747a720701 ; Chemistry, Physical; SCI(E); EI; PubMed; 25; ARTICLE; 11; 5237-5242; 109
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/198505]
专题	化学与分子工程学院
推荐引用方式 GB/T 7714	Yan, P,Huang, J,Lu, RC,et al. Two cloud-point phenomena in tetrabutylammonium perfluorooctanoate aqueous solutions: Anomalous temperature-induced phase and structure transitions[J]. journal of physical chemistry b,2005.
APA	Yan, P,Huang, J,Lu, RC,Jin, C,Xiao, JX,&Chen, YM.(2005).Two cloud-point phenomena in tetrabutylammonium perfluorooctanoate aqueous solutions: Anomalous temperature-induced phase and structure transitions.journal of physical chemistry b.
MLA	Yan, P,et al."Two cloud-point phenomena in tetrabutylammonium perfluorooctanoate aqueous solutions: Anomalous temperature-induced phase and structure transitions".journal of physical chemistry b (2005).