Preparation and Anti-Clay-Swelling Ability of New Water-Soluble Cellulose Derivatives Containiang Quaternary Ammonium Groups

摘要

New water-soluble cellulose derivatives containing quaternary ammonium groups were prepared by the heterogeneous reactions of hydroxyethyl cellulose with a quatern~ chlorohydrin and characterized by reaction parameters and infrared anal- yses. The d~pendence of the heterogeneous reaction on the different affecting factors was studied~The cellulose derivatives obtained were investigated for their property as the water-solble polymer for inhibiting the swelling ofwater-sensitive clay in oilfields. Based on the kinetic curves for clay hydration swelling, a mathematical model that relates linear cy expansion as a function of hydration rate and hydration equilibrium constant was developed.