液隔电极式压电传感器研究阳离子表面活性剂在石英表面的吸附  

Adsorption Studies of Cationic Surfactant onto Quartz Interface Using an Electrode separated Piezoelectric Sensor

作　　者：张鹏[1] 赵新生[1] 申大忠[1] 康琪[2] 刘泽常[2] 

机构地区：[1]山东大学化学学院 [2]山东科技大学化学工程系

出　　处：《山东科技大学学报（自然科学版）》2000年第1期4-7,共4页Journal of Shandong University of Science and Technology(Natural Science)

摘　　要：:在液隔电极式压电传感器 (ESPS)的构造中 ,石英表面与溶液直接接触 ,而石英表面在 pH >2溶液的溶液中带负电荷 ,因此可以吸附阳离子型表面活性剂分子。本文以ESPS方法实时监测表面活性剂十六烷基二苯基溴化铵在石英晶体表面的吸附过程。本方法原理为ESPS的振荡频率随表面活性剂吸附质量的增加线性的下降。本文还讨论了石英晶体的表面粗糙度、离子强度及对 pH对吸附密度的影响。In the configuration of an electrode separated piezoelectric sensor (ESPS),the qurtz surface in directly contact with the liquids phase.Quartz surface is charged negatively in solutions of pH>2 and can adsorb cationic surfactants.In this paper,the adsorption process of cetyldimethylbenzylammonium (CDMBA) onto quartz crystal surface of the was real time monitored by the ESPS method.The oscillating frequency of the ESPS decreases linearly with increasing adsorption mass of the surfactant. The influence of surface roughness of the quartz crystal on the adsorption density were discussed. The dependence of the adsorption density on pH and ionic strength was reported.

关 键 词：表面活性剂 吸附 压电传感器 石英表 

分 类 号：TH714.513[机械工程—测试计量技术及仪器]