木薯淀粉基十二烷基糖苷的制备及其表面性能

以木薯淀粉为糖源，在浓硫酸的催化作用下采用转苷法制备木薯淀粉基十二烷基糖苷（APG），考察淀粉与乙二醇反应过程中反应体系糖浓度的变化规律，探讨反应温度、反应时间、催化剂用量、醇糖比等诸因素对十二烷基糖苷制备反应的影响，研究产品的表面性能。实验结果显示，在乙二醇糖苷的反应过程中，还原糖的浓度变化呈现先增大后降低的趋势；十二烷基糖苷的制备最佳反应条件为反应温度115℃，反应时间4h，催化剂用量0.8%，醇糖比为3.5∶1；制备的淀粉基十二烷基糖苷的表面张力为25.9 mN/m，临界胶束浓度（cmc）约为0.05%。

Preparation and surface properties of cassava starch-based dodecylycoside

The dodecylycoside（APG）was synthesized by indirect synthesis method. The concentration diversification of the reducing sugar in the process of glycol polyglucoside preparation and the effects of reaction temperature，reaction time，catalyst dosage and radio of alcohol/suga on the the synthesis of the dodecylycoside were investigated. Meanwhile the surface properties of sample were determined. The results show that the concentration of the reducing sugar reaction is increased at first and then decreased in the process of glycol polyglucoside preparation，and the optimum reaction conditions for synthesizing the dodecylycoside are explained as follows：reaction temperature 115℃，reaction time 4h，catalyst dosage 0.8%，alcohol/starch ratio 3.5∶1. The surface tension of the dodecylycoside is 25.9 mN/m，and the critical micelle concentration（cmc）is 0.05%.