摘要
液隔电极式压电传感器(ESPS)对表面质量负载变化有灵敏的频率响应。在ESPS表面浇铸聚苯乙烯(PS)薄膜,实时监测十二烷基苯磺酸钠在PS膜表面吸附过程中的质量变化,结果表明其吸附过程呈现可逆吸附特征,并可以用Langmuir等温线和动力学模型进行回归分析,获得吸附/脱附速率常数、平衡常数、饱和吸附量等参数,并讨论盐浓度的影响。
A electrode-separated piezoelectric sensor （ESPS） was fabricated by using quartz crystal as the piezoelectric material. The ESPS has a sensitive frequency response to the change in surface mass loading. A polystyrene film was cast on the surface of the ESPS. The adsorbed mass of sodium dodecyl benzene sulfonate on polystyrene surface was monitored real time by the ESPS sensor. It is shown that the adsorption is reversible and the isotherm is in Langmuir type. The rate constants for adsorption and desorption, equilibrium constant of adsorption and saturation adsorbed mass were obtained. The influence of salt concentration was tested.
出处
《皖西学院学报》
2008年第5期46-48,共3页
Journal of West Anhui University
关键词
液隔电极式压电传感器
聚苯乙烯膜
吸附
十二烷基苯磺酸钠
leetrode-separated piezoelectric sensor
polystyrene film
adsorption
sodium dodecyl benzene sulfonate
