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  • 學位論文

電解質對維他命E在表面活性劑溶液中溶解的影響(Ⅱ)

Effect of Electrolyte on the Dissolution of Vitamin E in Surfactant Solutions (Ⅱ)

指導教授 : 丘穎哲
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摘要


摘 要 我們使用之表面活性劑包括十二烷基磺酸鈉和十二烷基三甲基溴化銨,使用之電解質包括氯化鈉、氯化鉀、氯化鈣、硝酸鈉與硫酸鈉。使用表面活性劑加電解質溶液溶解維他命E,可使其溶解度大幅提高(飽和溶油值超過1),乳化液的穩定性也增加。在本篇研究中,我們使用動態光散射法、紫外光吸收、濁度與肉眼觀察來研究加入電解質對乳化液系統的影響,以及不同電解質間的區別。此外,許多表面活性劑在加入電解質之後,表面活性劑本身的CMC與MDC值下降許多。使溶油曲線改變,適合於低濃度之應用。

並列摘要


Abstract We have studied two surfactants: Sodium dodecyl sulfate and Dodecyltrimethyl ammonium bromide and five electrolytes: NaCl、KCl、CaCl2、NaNO3 and Na2SO4. Vitamin E dissolution in surfactant solutions can be largely increased by adding electrolyte(saturation value>1). Stability of emulsion is also improved. In this study, we used dynamic light scattering、UV absorption、turbidity and visual observation to study the influence of an electrolyte on emulsion systems. The CMC and MDC of many surfactant solutions shift to the lower concentration by adding electrolytes and the solubilization curves moves to lower surfactant concentrations which is more suitable for some applications.

並列關鍵字

electrolyte surfactant Vitamin E

參考文獻


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