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用吊片法和气泡最大压力法分别测定了烷基聚葡糖苷 (APG) C9.6 G1 .3水溶液的平衡和动态表面张力 ,研究了 APG水溶液表面的吸附平衡、动力学及其影响因素 .测得其 cmc(临界胶束浓度 )为 0 .0 3 2 g /L .吸附过程由初始的扩散控制转变到势垒控制 ,吸附势垒为 4～ 7k J/mol.温度升高 ,平衡和动态表面张力均减小 ,吸附量增加 ;加入无机盐 ,平衡和动态表面张力增大 ,吸附量亦增加 ;醇类的吸附使动态表面张力下降速率加快 ,表明 APG与醇分子间有协同吸附作用
The equilibrium and dynamic surface tension of the alkyl polyglucoside (APG) C9.6 G1 .3 aqueous solution were measured by the hanging sheet method and the bubble maximum pressure method. The adsorption equilibrium, kinetics and its influencing factors on the surface of APG aqueous solution were studied. The measured cmc (critical micelle concentration) was 0.32 g / L. The adsorption process changed from the initial diffusion control to the barrier control, and the adsorption barrier was 4 ~ 7k J / mol. The temperature rise, the equilibrium and The dynamic surface tension decreased and the adsorption capacity increased. With the addition of inorganic salts, the equilibrium and dynamic surface tension increased and the adsorption capacity increased. The adsorption of alcohols accelerated the rate of decrease of dynamic surface tension, indicating synergistic adsorption between APG and alcohol molecules