Determination of interfacial tension from crystallization and dissolution data: a comparison with other methods.

Determination of interfacial tension from crystallization and dissolution data: a comparison with other methods.
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DOI:
10.1016/s0001-8686(98)00072-4
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发表时间:
1999-02
影响因子:
15.6
通讯作者:
W. Wu;G. H. Nancollas
W. Wu;G. H. Nancollas
中科院分区:
化学1区
文献类型:
--
作者:
W. Wu;G. H. Nancollas

文献摘要

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综述了固液界面张力的测定方法,包括溶解度/粒径、结晶和溶解动力学。最初由Ostwald提出,后来由Freundlich修正的溶解度作为粒径的函数的使用,可能不适合用于确定固-液界面的界面张力。讨论了溶液与难溶矿物如羟基磷灰石、氟磷灰石、透钙磷石、磷酸八钙、一水草酸钙、硫酸钡、硫酸钙、方解石和二价金属氟化物之间的界面张力值。将这些结果与接触角或润湿测量进行比较。从恒定组成反应动力学获得的界面张力值与使用涉及薄层芯吸技术的接触角方法确定的那些具有相同的数量级。
Methods for the determination of interfacial tension between a solid and a liquid are reviewed, including solubility/particle size, crystallization and dissolution kinetics. The use of solubility as a function of particle size, originally put forward by Ostwald and later corrected by Freundlich, may be unjustified for determining interfacial tension at solid–liquid interfaces. The interfacial tension values between solutions and sparingly soluble minerals such as hydroxyapatite, fluorapatite, brushite, octacalcium phosphate, calcium oxalate monohydrate, barium sulfate, calcium sulfate, calcite, and divalent metal fluorides are discussed. A comparison of these results is made with contact angle or wetting measurements. The interfacial tension values obtained from constant composition reaction kinetics are of the same order of magnitude as those determined using a contact angle method involving thin layer wicking techniques.