Contact angle and film pressure: Study of a talc surface
Contact angle and film pressure: Study of a talc surface
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DOI：
10.1006/jcis.2002.8611
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发表时间：
2002-11-15
影响因子：
9.9
通讯作者：
Clauss, F
中科院分区：
文献类型：
--
作者：
Douillard, JM;Zajac, J;Clauss, F
用吸附量热法和吸附等温线法研究了片状和粉末状滑石粉样品。使用模型来确定固体表面能、固体表面张力以及这些项的分散、酸性和碱性分量。这些结果被引入到一个近似方程中，该方程将吸附与接触角数据联系起来。实验接触角是正确的协议与这种方法。用Neumann状态方程对实验数据进行了拟合和讨论。它表现为考虑气体吸附和膜压的一般方程的数值形式。无论固体是片状还是粉末状，滑石与液体接触的行为似乎没有很大不同。(C)2002 Elsevier Science（美国）。
Talc samples in both sheet and powder form are studied by adsorption calorimetry and adsorption isotherm techniques. A model is used to determine the solid surface energy, the solid surface tension and the dispersive, acidic, and basic components of these terms. These results are introduced in an approximate equation relating adsorption to contact angle data. Experimental contact angles are in correct agreement with this approach. The Neumann equation of state is used to fit the data and discussed. It appears as a numerical form of the general equation taking into account gas adsorption and film pressure. Behaviors of talc in contact with liquids do not appear very different whether the solid is in sheet or powder form. (C) 2002 Elsevier Science (USA).