Urea-induced demicellization of Pluronic L64 in water

CORC > 过程工程研究所 > 中国科学院过程工程研究所 > 研究所（批量导入）

	Urea-induced demicellization of Pluronic L64 in water
	Bharatiya, B.1; Guo, C.2; Ma, J. H.2; Kubota, O.3; Nakashima, K.3; Bahadur, P.1
刊名	COLLOID AND POLYMER SCIENCE
	2009
卷号	287 期号:1 页码:63-71
关键词	Demicellization Critical micellization temperature (CMT) Aggregation number
ISSN号	0303-402X
英文摘要	The micellar behavior of a polyethylene oxide block-polypropylene oxide block-polyethylene oxide copolymer Pluronic L64 in aqueous urea solutions (urea concentrations 0, 1, 2, 3, 4, and 6 M) by physical methods, viz. cloud point and viscosity, spectral techniques (Fourier transform infrared, fluorescence, and nuclear magnetic resonance), differential scanning calorimetry, and dynamic light scattering is reported. The presence of urea causes an increase in the clouding temperature, critical micellization temperature, and the structural transition (spherical micelles to ellipsoid/rod) temperature; different methods showed good agreement. Urea induces demicellization of L64, enhancing accumulation of water molecules surrounding micelles. L64 micelles show growth at high temperatures, but this micellar transition is suppressed by urea, as proven by calorimetric and viscometric methods. The results are discussed in terms of the molecular mechanism underlying the effects of urea.
WOS标题词	Science & Technology ; Physical Sciences
类目[WOS]	Chemistry, Physical ; Polymer Science
研究领域[WOS]	Chemistry ; Polymer Science
关键词[WOS]	OXIDE) TRIBLOCK COPOLYMER ; BLOCK-COPOLYMER ; AGGREGATION BEHAVIOR ; AQUEOUS-SOLUTIONS ; NONIONIC SURFACTANTS ; MICELLE TRANSITION ; MICELLIZATION ; HYDROCARBONS ; SPECTROSCOPY ; DENATURANTS
收录类别	SCI
语种	英语
WOS记录号	WOS:000261951500008
公开日期	2015-09-01
内容类型	期刊论文
源URL	[http://ir.ipe.ac.cn/handle/122111/19221]
专题	过程工程研究所_研究所（批量导入）
作者单位	1.Veer Narmad S Gujarat Univ, Dept Chem, Surat 395007, India 2.CAS, Inst Proc, State Key Lab Biochem Engn, Lab Separat Sci & Engn, Beijing, Peoples R China 3.Saga Univ Honjo, Fac Sci & Engn, Dept Chem, Saga 8408502, Japan
推荐引用方式 GB/T 7714	Bharatiya, B.,Guo, C.,Ma, J. H.,et al. Urea-induced demicellization of Pluronic L64 in water[J]. COLLOID AND POLYMER SCIENCE,2009,287(1):63-71.
APA	Bharatiya, B.,Guo, C.,Ma, J. H.,Kubota, O.,Nakashima, K.,&Bahadur, P..(2009).Urea-induced demicellization of Pluronic L64 in water.COLLOID AND POLYMER SCIENCE,287(1),63-71.
MLA	Bharatiya, B.,et al."Urea-induced demicellization of Pluronic L64 in water".COLLOID AND POLYMER SCIENCE 287.1(2009):63-71.