单体插入－层间聚合法合成聚环氧氯丙烷二甲胺／膨润土
摘要
Dimethylamine, epichlorohydrin, and ethylenediamine were used as inter-layer reagents to prepare epicholorohydrin-dimethylamine cationic polymer/bentonite (EPI-DMA/Bt) with the monomer-insert inter-layer polymerization method. The influence of the amounts of dimethylamine, epichlorohydrin, and ethylenediamine, reaction temperature and reaction time on the performance of EPI-DMA/Bt were investigated. This composite structure was characterized with XRD and specific surface area measurement. The results showed that when the amount of dimethylamine was 3 mmol•g^(-1), n(epichlorohydrin/dimethylamine)=1:1 and m[ethylenediamine/(epichlorohydrin + dimethylamine)]=2%, reacting at 65℃ for 3 h, the adsorption efficiency of active jade blue (K-GL) on the EPI-DMA/Bt product was above 90%.