Influence of Acidity on the Electrostatic Stability of Alumina Suspensions in Ethanol
Influence of Acidity on the Electrostatic Stability of Alumina Suspensions in Ethanol
复制标题
酸度对乙醇中氧化铝悬浮液静电稳定性的影响
DOI：
10.1111/j.1151-2916.1997.tb02928.x
复制
发表时间：
2005
影响因子：
3.9
通讯作者：
P. Nicholson
中科院分区：
文献类型：
--
作者：
Gonghou Wang;P. Sarkar;P. Nicholson
将氧化铝粉末分散在不同酸度的乙醇溶液中.在水介质中，酸度由pH值定义。该定义可以使用离子转移函数扩展到非水介质。已发现颗粒表面上的电荷与酸度有关。采用电泳法和浊度法研究了Al 2 O3-EtOH悬浮液的静电稳定性.提出了一种静电稳定机理，并通过Derjaguin-Landau-Verwey-Overbeek（DLVO）理论进行了分析。
Alumina (Al 2 O 3 ) powders have been dispersed in ethanol (EtOH) solutions of different acidity. In aqueous media, acidity is defined by pH. This definition can be extended to nonaqueous media using ion-transfer functions. The electrical charge on the particle surfaces has been found to be acidity dependent. The electrostatic stability of Al 2 O 3 -EtOH suspensions has been evaluated via electrophoresis and turbidity. An electrostatic stabilization mechanism is proposed and analyzed via Derjaguin-Landau-Verwey-Overbeek (DLVO) theory.