阳离子有机蒙脱石的制备与特征

Preparation and Characterization of Hydrophobic Cationic Montmorillonite

在树脂障碍控制中,阳离子疏水性树脂固着剂要比普通亲水性阳离子固着剂更有效,因此,阳离子疏水性的有机蒙脱石有望成为有效的树脂障碍控制剂。本实验阳离子有机蒙脱石由聚酰胺多胺环氧氯丙烷树脂对蒙脱石改性制备,并通过X射线衍射、傅立叶变换红外光谱、热重分析、Zeta电位、电荷密度和粒度来表征。改性蒙脱石的Zeta电位、电荷密度和粒度随聚酰胺多胺分子质量的增加而增加,但高和低电荷密度的改性蒙脱石均对胶体状的分散松香酸表现出强烈的吸附作用。

Hydrophobic cationic montmorillonite is desirable for pitch control in pulp and paper industry. In this paper, polyaminoamide-epichlorohydrin (PAE) modified montmorillonite was prepared. The modified montmorillonite was characterized by X-ray diffraction, FTIR and thermal gravimetric analysis. The amount of PAE intercalated and cationic charge density of the modified montmorillonite were determined. Finally, it was found that the samples with high or low charge density exhibited strong interactions with dispersed colloid rosin acid.