摘要利用磺化4,4´-二氟二苯砜（SDFDPS）、4,4´-二氟二苯砜（DFDPS）与双酚勿（BHPF）发生亲核取代反应制备磺化聚醚砜（SPES），通过改变SDFDPS和DFDPS的比例控制SPES的磺化度。再以不同磺化度的SPES为膜材料，以聚乙烯吡咯烷酮(PVP)为成孔剂，以1-甲基-2-吡咯烷酮为溶剂制备SPES系列超滤膜。评价了SPES系列超滤膜的水通量、膜的恢复率及牛血清蛋白去除率等性能。结果表明，SPES膜的通量先增大后减小，在磺化度为1%时纯水通量达到最大值634L/m2•h，牛血清蛋白溶液通量为63L/m2•h，恢复水通量为226L/m2•h，在磺化度为5%时纯水通量最小为110L/m2•h，牛血清蛋白溶液通量为56L/m2•h，恢复水通量为73L/m2•h。随着磺化度从0%增加到5%，膜的截留率逐渐增大，由87%增加到92.2%。磺化度与膜的恢复率无相关性，磺化度为1%时恢复率最小只有35.57%，磺化度为3%时恢复率最大达52.76%。21576
关键词  聚合物 超滤膜 磺化度
毕业论文设计说明书（论文）外文摘要
Title Prepation of sulfonated polyethersulfone membranes and         application on wastewater treatment.
Abstract
Polyether sulfone(SPES) was synthesized by sulfonation 4,4 ´-difluoro- diphenyl sulfone (SDFDPS), 4,4´-difluoro-diphenyl sulfoxide (DFDPS) and Bisphenol（BHPF）with nucleophilic substitution .The sulfonation degree(DS) of SPES polymers were controlled by changing the proportion of SDFDPS and DFDPS. Then a series of ultrafiltration membranes were prepared with sulfonated polymers with different DS. Polyvinyl-pyrrolidone (PVP) was used as additive, while 1-methyl-pyrrolidone  was chosen as solvent. The performance of ultrafiltration membranes were evaluated by testing  water flux, removal rates of bovine serum albumin and water flux recovery rate. Results show that the water flux increased firstly and decreased successively. Membrane with DS of 1% has a maximum water flux of 634L/m2•h and a bovine serum albumin solution flux of 63L/m2•h, while its restoring water flux was 226L/m2•h. Membrane with DS of 5% has a minimum water flux of 110L/m2•h and a bovine serum albumin solution flux of 56L/m2•h, while its restoring water flux was 73L/m2•h. With the increase of membrane DS from 0 %to 5%,BSA removal rate of membrane increased from 87% to 92.2%.
Flux recovery rates and ultrafiltration membrane have no correlationship. membrane with DS of 1% has the minimum water flux recovery rates, which was only 35.57%, while the membrane with DS of 5% obtained the largest flux recovery rate of 52.76%.
Keywords  Polymer  Ultrafiltration membranes  sulfonation  
 目   次
1 引言    1
1.1 超滤膜概况    1
1.2 超滤膜改性研究    3
1.3 超滤膜的应用研究    5
1.4 聚醚类材料    6
1.5 本课题的研究目的及内容    6
2 实验部分    7
2.1 实验药品    7
2.2 实验仪器及表征方法    8
2.3 实验方法    11
3 结果与分析    13
3.1 聚合物的合成及表征    13
3.2 膜的表征    14
结论    18
致谢    19
参考文献    20
1 引言
膜技术是多学科交叉的产物，是近年来发展起来的现代高新技术之一，亦是化学工程学科和环境工程学科发展的新的增长点。它是以功能性分离膜为过滤介质，实现液-液或气-液高度分离纯化的一种技术。膜技术作为一种新型的分离方法，与传统的分离技术相比较，具有分离效率高、选择性高、无相变、能耗低、无污染、操作简单、占地面积少等优点。 改性磺化聚醚砜超滤膜的制备及其在废水处理中的应用研究:http://www.751com.cn/huaxue/lunwen_13837.html