中空纤维复合纳滤膜的制备与表征以及醇的影响  

Preparation and characterization of hollow fibercomposite NF membrane and effect of alcohols on the performance of NF membrane

作　　者：朱奇[1,2] 李魁[1,2] 洪昱斌 丁马太[2] 何旭敏[1] 蓝伟光[2,3] 

机构地区：[1]厦门大学化学化工学院,福建厦门361005 [2]厦门大学材料学院,福建厦门361005 [3]三达膜科技(厦门)有限公司,福建厦门361022

出　　处：《功能材料》2014年第24期24019-24024,共6页Journal of Functional Materials

基　　金：福建省科技计划科技合作资助项目(2010I0012)

摘　　要：以聚醚砜(PES)中空纤维超滤膜为基膜,采用界面聚合法制备聚哌嗪酰胺中空纤维复合纳滤膜。其最佳工艺条件为哌嗪(PIP)1.5%(质量分数),均苯三甲酰氯(TMC)0.2%(质量分数),聚合时间30 s,热处理条件80℃/20 min。在0.3 MPa、25℃条件下,该纳滤膜的纯水通量33.6 L/m2h,对1 000 mg/L MgSO4溶液的截留率为85%。作为添加剂的醇,其羟基数及含量不同,对膜性能的影响也不同,可以通过这些因素的调控来提高膜的截留性能。By using a hollow fiber ultrafiltration membrane, PES (polyethersulfone ) as the substrate, a polypiperazine-amide hollow fiber composite nanofiltration membrane was prepared through the interfacial poly-merization of PIP (piperazine)and TMC (1,3,5-benzenetricarbonyl trichloride).The optimum preparation con-ditions were:PIP 1.5wt%,TMC 0.2wt%,polymerization time 30 seconds,heat treatment 80 ℃/20 min.Un-der the condition of 0.3 MPa and 25 ℃,it is found that the pure water flux reached 33.6 L/m2 h,and the rejec-tion to 1 000 mg/L MgSO4 reached 85%.The additive alcohols showed a varying influence on the performance of the composite NF membrane by changing the hydroxyl number and the alcohol contents,which provide a tool to adj ust the rej ection of the polypiperazine-amide NF membrane.

关 键 词：复合纳滤膜 中空纤维 醇类 

分 类 号：TQ028.8[化学工程]