OXIDATION CAN ALSO PROMOTE LIGNIN COMBINE WITH MULTIPHENOLS

摘要

The structural characteristics and the adsorption ability of the oxidation products of lignin and multiphenols are investigated in this paper. The mixed derivative is extracted from Chinese Larch Tree. The oxidizing agent is H_2O_2. Experimental results showed that lignin couple with multiphenols during the process of oxidation. The molecular weight of the derivative is obviously increased after oxidation. The contents of major functional groups in the derivatives are obviously changed after oxidation. The oxidized derivative has good adsorptive-warping ability on the outer surface of paniculate clay. These experimental facts provide more theoretical basis in the study on novel vegetable phenol thinners that modify the inhibitory and thinning properties of polymer drilling fluid.