阳离子瓜尔胶-丙烯酰胺接枝共聚物对蔗渣浆的助留性能研究

The Improvement of Retention Properties of Bagasse Pulp by Cationic Guar Gum-Acrylamide Graft Copolymer

研究了低温（10％）水溶液聚合法合成的阳离子瓜尔胶一丙烯酰胺接枝共聚物（CGG—g—PAM）对蔗渣漂白硫酸盐浆的助留特性，结果表明：CGG—g—PAN与PAC配合使用可以发挥良好的作用，当其用量分别为0．08％和1．2％时，细小纤维的FPR（首程留着率）较空白样提高了41．5％；但当剪切速率增大时，FPR呈直线下降。此外CGG—g—PAM受体系高电导率的影响较小；其适宜的pH应用范围在5～8。

Cationic guar gum-acrylamide graft copolymer（ CGG-g- PAM） which was synthesized in aqueous solution at low temperature（ 10℃ ） was applied as retention and drainage aids in bleached bagasse kraft pulp, it is showed that both PAC and CGG-g-PAM had good effect, when the dosages of PAC and CGG - g - PAM2 were 1.2% and 0.08% respectively, the first- pass retention improved by 41.5% compared with blank. And CGG-g- PAM could not endure high shear, but high conductivity of system had little effect on it. Furthermore it should be used in the neutral condition.