Dispersion of SiO2 Powders in Non-aqueous High Concentration Polymer Solution

Abstract

Abstract: The dispersion of silica in concentrated courtelle/DMFsolution was studied(Courtelle is a copolymer of 94 mol%acrylonitrile and 6 mol%methyl acrylate).It is found that the agglomeration of silica is the combined results of surface energy and surface hydrogen bonding, The dispersibility of silica is markedly improved by the addition of 3-trimethoxysilyl propylmethacrylate(>1.2%).The improvement is believed to be caused by the chemical reaction between the silane and silanol groups on silica surface, reducing the concentration of hydrogen bonding, hence the attractive forces.

Key words: Silica, Hydrogen bonding, Dispersion agent

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CHEN Li-Fu. Dispersion of SiO₂ Powders in Non-aqueous High Concentration Polymer Solution[J]. Chem. J. Chinese Universities, 1994, 15(2): 281.

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Dispersion of SiO₂ Powders in Non-aqueous High Concentration Polymer Solution

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