Abstract
利用悬挂滴方法研究了2,5-二丙基-4-十一烷基苯磺酸钠（简称3-11-3）在空气/水界面上的动态扩张粘弹性质,考察了时间、表面压、工作频率及3-11-3的浓度对扩张模量和相角的影响.研究结果表明,低表面压条件下,表面膜以弹性为主,分子在表面上的状态决定膜性质;高表面压条件下,分子在体相和表面间的交换过程决定膜性质,表面膜以粘性为主.
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