Membrane Properties

For highly sensitive analysis of anionic lipid membranes, we developed membrane surface enhanced Raman spectroscopy with different sized gold nanoparticles (AuNPs). The employed AuNPs did not disturb and retained native lipid membrane properties such as fluidity and polarity, and enhanced Raman signals of anionic lipid membrane. Furthermore, the enhanced part of lipid membrane was modulated by different size AuNPs. Thus, our method enables site specific analysis of anionic lipid membrane in high sensitive manner keeping native lipid membrane properties.

The percentage removal of phenol from aqueous solution by emulsion liquid membrane and emulsion leakage was investigated experimentally for various parameters such as membrane:internal phase ratio, membrane:external phase ratio, emulsification speed, emulsification time, carrier concentration, surfactant concentration and internal agent concentration. These parameters strongly influence the percentage removal of phenol and emulsion leakage. Under optimum membrane properties, the percentage removal of phenol was as high as 98.33%, with emulsion leakage of 1.25%. It was also found that the necessity of carrier for enhancing phenol removal was strongly dependent on the internal agent concentration. © 2010 Elsevier B.V.

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