摘要
开发了一种新型用于界面聚合的荷电纳滤膜,在聚醚砜超滤膜上复合一层薄的选择层,并使其具有纳滤膜的结构和特征。以2,5-二氨基苯磺酸(DIA)和均苯三甲酰氯(TMC)为反应单体,采用均匀设计法,通过界面聚合制备荷负电纳滤膜。得出的优化条件为:2,5-二氨基苯磺酸浓度为0.75%,十二烷基硫酸钠(SDS)浓度为0.15%,酸接受剂[V(Na2CO3):V(NaOH)=2:1]浓度为0.15%,界面聚合反应时间(IPT)为3 min。膜对一价盐的截留率均为40%,对二价盐的截留率接近80%,对低分子有机染料的截留率达90%以上。
A new charged nanofiltration membrane was presented to apply in interfacial polymerization.The purpose is to coat a thin polypiperazing-amide layer onto polyethersuffone uhrafiltration membrane which has the morphology and functionality of nanofiltration membrane.Taking 2,5-diaminobenzene sulphonic acid（DIA） and trimesoyl chloride as reactive monomers,and using uniform design method,charged nanofiltration membrane was prepared by interfacial polymerization.The optimization preparation conditions are as follows： mass friction of DIA is 0.75%,that of SDS is 0.15 %,that of acid accepters（Na） is 0.15%,and the reacting time is 3 minutes.With the conditions,the retention rate of the membrane to NaCl and KCl both are 40%,that of the membrane to MgCl2 is 80%,and that of the membrane to the organic dyes with small molecule mass is more than 90%.
出处
《中南林业科技大学学报》
CAS
CSCD
北大核心
2010年第12期147-150,共4页
Journal of Central South University of Forestry & Technology
关键词
聚醚砜
纳滤膜
界面聚合
均匀设计
polyether sulfone
nanofiltration membrane
interfacial polymerization
uniform design
