蔗渣基强碱性离子交换纤维的制备及其对糖液脱色的研究

Preparation of a bagasse-based strong base anion exchange fibers and their application in sugar colorants removal

本工作以蔗渣纤维素为基体,一步接枝阳离子单体甲基丙烯酰氧乙基三甲基氯化铵(DMC),直接制得季铵型的强碱性阴离子交换纤维PGSB-N(CH3)3+Cl-.并研究了材料的制备条件、结构以及脱色性能;使用该改性蔗渣纤维对赤砂糖糖液进行脱色实验.实验证明,该改性蔗渣纤维脱色效果良好,而且价格低廉,再生容易.此外,一步法制备有利于进一步工业化,操作简单.

A novel type of strong base anion-exchange fibers with bagasse as the raw materials was prepared by grafting copolymerization of [2-（methacryloyloxy）ethyl] trimethylammonium chloride on bagasse fiber.The preparation condition,structure and decolorization performance of the strong base anion exchange fibers were investigated.The products were used for dynamic sugar decolorization.The experiments showed that modified bagasse fiber exhibited excellent properties of decolorization,easy regeneration and low cost.Meanwhile,the one-step preparation method is easy to operate,which is of great benefit to industry production.