Preparing microemulsions with lecithins
Preparing microemulsions with lecithins
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卵磷脂微乳液的制备
DOI：
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发表时间：
1995
期刊：
影响因子：
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通讯作者：
B. Faulhaber
中科院分区：
文献类型：
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作者：
M. Kahlweit;G. Busse;B. Faulhaber
我们介绍了生物两亲分子对碳氢化合物进行微乳化的一系列研究中的第一个结果。因此，我们使用定义明确的碳数m为8~16的卵磷脂(Cm)2 PC和碳数为8~16的正构烷烃。要制备含有短链卵磷脂的微乳液，必须加入丁醇作为助溶剂，而长链卵磷脂则加入丙醇作为助溶剂。对于中链卵磷脂，必须加入这两种醇的混合物。在等温相四面体的基础上，从唯象的角度讨论了醇的作用。温度对相行为的影响弱于非离子正构烷基聚乙二醇醚(C I E J)或阴离子AOT，后者使卵磷脂微乳液对温度波动不那么敏感。在卵磷脂-丁醇混合物中添加氯化盐的影响较弱，而在卵磷脂-丙醇混合物中添加氯盐的影响较大。最后，我们证明，添加廉价的大豆卵磷脂可以显著提高C I E j微乳化烷烃的效率，这在工业应用中可能是有意义的
We present the results of the first in a series of studies on the microemulsification of hydrocarbons by biological amphiphiles. As such we use lecithins (C m ) 2 PC of well-defined carbon number m from 8 to 16 and n-alkanes of carbon number k from 8 to 16. For preparing microemulsions with short-chain lecithins, one has to add butanol as cosolvent, with long-chain lecithins propanol is added as cosolvent. With medium-chain lecithins, one has to add a mixture of the two alcohols. The role of the alcohols is discussed phenomenologically on the basis of isothermal phase tetrahedra. The effect of temperature on the phase behavior is weaker than with nonionic n-alkyl polyglycol ethers (C i E j ), or anionic AOT, which makes lecithin-based microemulsions less sensitive to temperature fluctuations. The effect of added chloride salts is weak in lecithin-butanol mixtures, but strong in lecithin-propanol mixtures. We, finally, demonstrate that adding inexpensive soy bean lecithin increases the efficiency of C i E j in microemulsifying alkanes considerably which might be of interest for industrial applications