弱酸离子交换纤维的结构表征与性能研究

Study on structure characterization and properties of polypropylene based weak acidic Ion-exchange fiber

采用预辐射接枝法,引发聚丙烯（PP）纤维接枝丙烯酸（AA）,制备出接枝率为235%-298%,平均交换容量为9.65mmol/g,物理机械性能良好的弱酸离子交换纤维（PP-g-AA）。利用分析仪器对PP-g-AA纤维的结构进行表征,并对其机械强度、热稳定性、交换容量、接枝率、化学稳定性等物理与化学性能进行了测试。结果表明,利用预辐射接枝法制备的PP-g-AA纤维具有较高的交换容量、快的吸附速度、较好的机械性能和稳定的化学性能,是一种性能优良的功能材料。

Weak acidic ion-exchange fiber was synthesized by the grafting copolymerization of acrylic acid（AA） onto pre-irradiated polypropylene （PP） fiber by ^60 Co-γ. IR, SEM, XRD and mechanical properties, determinations of titration curve, absorption dynamics, swelling property and chemical stability were used to characterize the structure and appearance of PP-g-AA fiber. The results show that the weak acidic ion-exchange fiber has a high exchange capacity,quick adsorption and desorption velocity, finer mechanical capability and chemical stability. It is a kind of materials with excellent properties.