玻璃纤维基强酸性离子交换纤维的制备

The preparation of strongly acidic ion exchange fiber by coating poly(styrene-divinylbenzene) onto glass fiber

以过氧化苯甲酰为引发剂,将苯乙烯-二乙烯苯交联低聚物包覆在玻璃纤维表面,得到聚(苯乙烯-二乙烯苯)包覆纤维,然后用浓硫酸将聚(苯乙烯-二乙烯苯)包覆纤维磺化,制备强酸性离子交换纤维。研究了反应液固比、反应时间及反应温度对离子交换容量的影响,并用红外光谱加以表征。结果表明:二乙烯苯含量为5%的聚(苯乙烯-二乙烯苯)包覆纤维,在液固比1∶4,温度100℃下磺化反应12h,可得到离子交换容量为4.08mmoL/(g树脂)的强酸性离子交换纤维。

The benzoyl peroxide was used as initiator to make poly（styrene-divinylbenzene） oligomer to coat onto the surface of glass fiber, resulting in poly（styrene-divinylbenzene） coating fiber. That it was sulfonated by concentrated sulfuric acid to prepare a strong acidic ion-exchange fiber. The influence of reaction liquid-solid ratio, reaction time and temperature on the exchange capacity was studied, and the ion-exchange fiber was characterized by means of infra-red spectrum. The results indicated that the most suitable condition of the sulfonation of poly（styrene-divinylbenzene） coating fiber contained 5% DVB percent were： temperature 100℃, time duration 12 hours, resulting in a strong acidic ion-exchange fiber with an exchange capacity of 4. 08mmol/（g resin）.