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《China Powder Science and Technology》 2001-02
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Effect of Polymer Adsorption on ζ Potential and Adsorption Layer Thickness of Silica Gels

LIU Mei-tang,WEI Yuan-hong, SHI Ji-Bin,LIU Hong-lai (Department of Chemistry,East China University of Science and Technology,Shanghai,200237,China)  
The adsorption of polyvinylpyrroidone(PVP)on SiO 2 particles can affect the stability of silica suspension through ζ potential,adsorption layer thickness and so on.A thoroughly investigation of these factors has been carried out from temperature T,pH values,polymer concentration,electrolyte concentration and molecular weight of adsorbed polymer.The adsorption layer thickness is calculated from ζ potential through the correlation based on stern electric double-layer theory.The variation the of ζ potential and adsorption layer thickness under different conditions is thus obtained.
【Fund】: 国家自然科学基金! (编号 :2 9736 170 );; 教育部博士点基金资助项目! (编号 :19990 2 5 10 3)
【CateGory Index】: O647.3
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