作　　者： ; ; ; ;

机构地区： 中山大学

出　　处： 《离子交换与吸附》 2003年第6期532-539,共8页

摘　　要： 利用扫描电镜、热失重-红外、元素分析、低温氮吸附等技术和化学手段对聚羧酸基FFC-1离子交换纤维的结构与性能特点等进行了系统研究.结果表明:FFC-1离子交换纤维为含适量酰肼类交联键的聚羧酸(钠)型离子交换材料,外比表面积大和传质距离短是其反应动力学性能优异的主要原因.FFC-1纤维具有良好的化学与热稳定性,在5mol/L硫酸、硝酸、盐酸和2mol/L氢氧化钠溶液中浸泡,交换容量未见明显降低,但过氧化氢溶液对其功能基有明显破坏.CO2为FFC-1纤维在高温区间(300℃～350℃)的主要分解产物. The structure and properties of Na and H type FFC-1 ion exchange fiber were studied using SEM, TG-IR, EA, BET and other chemical means. The results showed that the novel fibrous materials contain carboxylic functional group with appropriate hydrazide cross-link structure. Owing to high external surface area and short transfer route, FFC-1 ion exchange fiber is provided with excellent reaction kinetic property. FFC-1 materials have good chemical and thermal stability. Their exchange capacity are not decreased after being soaked in 5mol/L H2SO4, HCl, HNO3, and 2mol/L NaOH, but can be destroyed by 10% H2O2 solution. CO2 is primary thermolysis product of FFC-1 fiber during the 300℃~350℃.

关 键 词： 离子交换纤维 物理化学性能 结构 热稳定性 吸附分离材料

领　　域： [化学工程]