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Titolo:
Structure of vesicles in homogeneous short-chain polyoxyethylene cholesterol ether systems
Autore:
Rodriguez, C; Naito, N; Kunieda, H;
Indirizzi:
Yokohama Natl Univ, Grad Sch Engn, Div Artificial Environm & Syst, Hodogaya Ku, Yokohama, Kanagawa 2408501, Japan Yokohama Natl Univ Yokohama Kanagawa Japan 2408501 anagawa 2408501, Japan Kose Corp, Prod Res Lab, Kita Ku, Tokyo 1140005, Japan Kose Corp Tokyo Japan 1140005 rod Res Lab, Kita Ku, Tokyo 1140005, Japan
Titolo Testata:
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
fascicolo: 1-3, volume: 181, anno: 2001,
pagine: 237 - 246
SICI:
0927-7757(20010615)181:1-3<237:SOVIHS>2.0.ZU;2-9
Fonte:
ISI
Lingua:
ENG
Soggetto:
NONIONIC SURFACTANTS; PHASE; BEHAVIOR; TEMPERATURE; TRANSITION; MEMBRANES; LECITHIN; BILAYERS;
Keywords:
vesicles; polyoxyethylene cholesterol ether; X-ray scattering; liquid crystals; electron-spin resonance;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Citazioni:
26
Recensione:
Indirizzi per estratti:
Indirizzo: Kunieda, H Yokohama Natl Univ, Grad Sch Engn, Div Artificial Environm & Syst, Hodogaya Ku, Tokiwadai 79-5, Yokohama, Kanagawa 2408501, Japan YokohamaNatl Univ Tokiwadai 79-5 Yokohama Kanagawa Japan 2408501
Citazione:
C. Rodriguez et al., "Structure of vesicles in homogeneous short-chain polyoxyethylene cholesterol ether systems", COLL SURF A, 181(1-3), 2001, pp. 237-246

Abstract

Mixtures of the homogeneous nonionic surfactant trioxyethylene cholesterolether, ChEO(3) and water were examined by microscopy, small-angle X-ray scattering, differential scanning calorimetry, electron-spin resonance and fluorescence spectrometry. A lamellar liquid-crystalline phase with peculiar characteristics is found above 75% of surfactant concentration. This phase seems to consist of a rather rigid and ordered bilayer when compared with typical L-alpha-phases although the degree of crystallinity is less than that of Lp-phases in nonionic systems with the same EO chain. The peculiarities of this phase are attributed to the rigid and bulky hydrophobic group of surfactant. The dispersion of this lamellar phase in water leads to the formation of very stable vesicles with a wide range of morphologies at rather low surfactant concentrations. (C) 2001 Elsevier Science B.V. All rights reserved.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 06/04/20 alle ore 19:55:12