Dopant-Mediated Interactions in a Lecithin Lamellar Phase |
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| Authors: | Luyan Wang Zhenwen Sun Yongcun Chai Jingcheng Hao Meishan Pei |
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| Institution: | 1. School of Chemistry and Chemical Engineering, University of Jinan , Jinan, Shandong, P. R. China;2. Key Laboratory of Colloid and Interface Chemistry (Shandong University), Ministry of Education , Jinan, Shandong, P. R. China;3. Key Laboratory of Colloid and Interface Chemistry (Shandong University), Ministry of Education , Jinan, Shandong, P. R. China;4. School of Chemistry and Chemical Engineering, University of Jinan , Jinan, Shandong, P. R. China |
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| Abstract: | 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. |
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| Keywords: | Dopant lamellar lecithin small angle x-ray scattering |
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