【摘要】 利用造纸厂制浆废液中的木质素与胺类化合物以游离基型反应使木质素改性；根据硝酸银点滴实验和电位滴定，证实二甲胺与环氧氯丙垸在０～５℃的温度下反应的生成物不是３．３—二甲胺—２羟基氯丙垸。通过红外光谱解析，改性的接枝共聚反应主要发生在木质素大分子结构中的愈创木酚基和对丙苯酚基环的第五位上。更多还原

【Abstract】 The writers have modified the lignin by utilizing free radical initiatin of the lignin from pulp waste liquor and amine compound.According to spot test of the silver nitrate solution and potentiometric titration.The product,formed from dimethylamine and 1-chloro-2,3-epoxypropane at 0～5℃,is not 3,3 dimethylamine-2 hydroxychloropropane.The evidence used for infrared absorption spectrum shows that the graft copolymerization reaction maianly occurs on the c5 position of abenzene ring of the guaiacol group and the p-n-propylphenol group in the lignin macromolecule structure。更多还原