<論文>直鎖脂肪酸,不飽和脂肪酸及び脂肪酸メチルエステルの二成分混合単分子膜 : シス形二重結合とメトキシカルボニルの立体障害効果

概要

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In order to clarify the effect of the steric hindrance effects of cis-double bond and methoxycarbonyl in the mixed monolayer states, two straight-chain fatty acids, unsaturated-chain fatty acid, and two fatty acids methyl ester were selected : myristic acid, stearic acid, oleic (cis-9-octadecenoic) acid, stearic acid methyl ester, and oleic acid methyl ester. The surface pressures of myristic acid/stearic acid, myristic acid/oleic acid, myristic acid/stearic acid methyl ester, and myristic acid/oleic acid methyl ester systems were measured at various compositions and temperatures. Mean molecular area-mole fraction curves, two-dimensional phase diagrams and apparent molar energy changes were evaluated. It was found that the steric hindrance effect of the cis-double bond in oleic acid and oleic acid methyl ester is larger than that of the methoxycarbonyl in stearic acid methyl ester and oleic acid methyl ester.
山口県立大学の論文
2001-03-25