| 摘要: |
| 水溶液中聚合物在粘土上的吸附对于聚合物污染防治和污水处理等都有重要意义。Scheutjens-Fleer理论是应用范围最广的聚合物吸附理论,适应于从单体到长链高聚物,从链无相互作用的稀溶液到纯聚合物的吸附研究。本文简要介绍了有关聚合物吸附的重要参数,包括吸附量、耦合分数或直接表面覆盖、平均层厚度和链段密度,以及相应的测定方法。文中分析了影响聚合物吸附研究发展的主要问题,指出水溶液中聚合物在粘土上的吸附研究的发展方向是综合研究吸附等温线和A/V效应、耦合分数、吸附层厚度、吸附分级现象和对粘土层间的影响,并与Scheutjens-Fleer理论计算结果进行比较。 |
| 关键词: 水溶液 聚合物 粘土 吸附 |
| DOI： |
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附件 |
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| POLYMER ADSORPTION FROM AN AQUEOUS SOLUTION ON CLAYS |
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Wang Xiulin
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Ocean University of Qingdao 266003
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| Abstract: |
| In the last ten years significant progress has been made for the polymer adsorption in theoretical and experimental fields, The studies are of practical importance in polymer contamination and wastewater treatment, etc. The paper outlines Scheutjens-Fleer theory of polymer adsorption from an aqueous solution, which has potentially been the most comprehensive and wide-ranging in its applicability, from monomers to very long polymers, and from extremely dilute solution where the adsorbed molecules behave as isolated chain up to bulk polymers. The paper also outlines the principal parameters, including adsorbed amount, bound fraction or direct surface coverage, adsorbed layer thickness and segment density distribution, and experimental techniques for measuring these parameters. The key problems that are still open are discussed for the study on polymer adsorption from an aqueous solution on clays. The further research projects are expected to comprehensively measure adsorption isotherm and A/V effect, bound fraction, adsorbed layer thidkness, adsorption fraction nation phenomena, and the effect of polymer adsorption on interlayer spacintg of clay, and to compare these experimental results with Scheutjens-Fleer theory prediction. |
| Key words: Aqueous solution, Polymer, Clays, Adsorption |
