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首页> 外文期刊>Journal of Applied Polymer Science >Adsorption studies of fatty acids on Montmorillonite-based filler clay
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Adsorption studies of fatty acids on Montmorillonite-based filler clay

机译：蒙脱土基填料粘土上脂肪酸的吸附研究

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Surface coating of montmorillonite-based filler clay with stearic and oleic (9-octadecenoic acid) acids was presented. Sedimentation measurements showed that the sedimentation rate and the sediment volume decreased sharply with the adsorbed amount of the acid up to a certain concentration and then became constant. The chemical analysis showed that the adsorbed amount of either acid by montmorillonite clay increased with the equilibrium concentration of the acid in the solution. The adsorption isotherm indicated the formation of a monolayer on the clay surface at a lower concentration of the acids followed by formation of multilayers of the acids on the clay surfaces at higher concentrations. XRD analysis indicated no intercalation of either acid in the lamella of the clay. We concluded the possibility of surface coating of montmorillonite clay with a monolayer of fatty acids that render the clay organophilic. The adsorption of either acid improved the dispersibility of the clay particles in organic or polymeric media. (C) 2002 Wiley Periodicals, Inc. [References: 19]
机译：介绍了用硬脂酸和油酸（9-十八烯酸）酸对蒙脱石基填料粘土进行的表面涂层。沉降测量结果表明，随着酸的吸附量增加到一定浓度，沉降速率和沉降量急剧下降。化学分析表明，蒙脱石粘土对任一酸的吸附量随溶液中酸的平衡浓度而增加。吸附等温线表明在较低浓度的酸下在粘土表面上形成了单层，随后在较高浓度下的粘土上形成了酸的多层。 XRD分析表明在粘土的薄层中没有插入任何一种酸。我们得出结论，蒙脱土粘土表面涂有单层脂肪酸可使粘土具有亲有机性。任一种酸的吸附均改善了粘土颗粒在有机或聚合物介质中的分散性。 （C）2002 Wiley Periodicals，Inc. [参考：19]

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