Dopant-Mediated Interactions in a Lecithin Lamellar Phase

Interactions induced by dopants in a lamellar phase constructed from the lecithin and water are analyzed by the small angle x-ray scattering (SAXS) technique. From SAXS patterns, scattering peak or curve shape changes disclose information on phase structure as well as the interactions between dopant...

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Bibliographic Details
Published inJournal of dispersion science and technology Vol. 29; no. 7; pp. 985 - 990
Main Authors Wang, Luyan, Chen, Xiao, Sun, Zhenwen, Chai, Yongcun, Hao, Jingcheng, Pei, Meishan
Format Journal Article
LanguageEnglish
Published Philadelphia, PA Taylor & Francis Group 01.08.2008
Taylor & Francis
Subjects
Chemistry
Colloidal state and disperse state
Dopant
Exact sciences and technology
General and physical chemistry
lamellar
lecithin
small angle x-ray scattering
Water
Shape
lamellar
Hydrophobicity
Small angle X ray scattering
Bilayer
small angle x-ray scattering
Poloxamer
Phosphatidylcholine
Dopant
lecithin
Technique
Structure
Block copolymer
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Summary:Interactions induced by dopants in a lamellar phase constructed from the lecithin and water are analyzed by the small angle x-ray scattering (SAXS) technique. From SAXS patterns, scattering peak or curve shape changes disclose information on phase structure as well as the interactions between dopant and host matrices. At a certain concentration, two amphiphilic tri-block copolymers (Pluronic P123 and F127) as dopants squeeze themselves into the lecithin bilayers with PPO hydrophobic blocks and produce various effects on the lamellar phase depending on the length of PEO hydrophilic groups. Coexistence of two different lamellar phases is observed in P123-doped systems.
Bibliography:ObjectType-Article-2
SourceType-Scholarly Journals-1
ObjectType-Feature-1
content type line 23
ISSN:0193-2691
1532-2351
DOI:10.1080/01932690701808668