PSF-g-P(PEGMA)的合成及其共混超滤膜的制备与性能研究  

SYNTHESIS OF PSF-g-P(PEGMA) AND FABRICATION AND PERFORMENCE OF ITS BLEND ULTRAFILTRATION MEMBRANES

作　　者：王建宇[1,2] 徐又一[1] 易砖[1] 朱利平[1] 朱宝库[1] 

机构地区：[1]浙江大学高分子科学研究所高分子合成与功能构造教育部重点实验室,杭州310027 [2]中国石油化工集团公司北京化工研究院,北京100013

出　　处：《高分子学报》2009年第7期700-706,共7页Acta Polymerica Sinica

基　　金：国家重点基础研究发展计划(973计划,项目号2009CB623402)资助项目

摘　　要：以氯甲基化双酚A型聚砜(PSF-CH2Cl)为大分子引发剂,通过原子转移自由基聚合(ATRP)法合成了以聚砜(PSF)为疏水主链、聚(聚乙二醇单甲醚甲基丙烯酸酯)[P(PEGMA)]为亲水侧链的梳状两亲性共聚物PSF-g-P(PEGMA).FT-IR和1H-NMR的表征结果证实了两亲性共聚物的生成.将PSF-g-P(PEGMA)与PSF进行共混,通过浸没沉淀法制备了共混超滤膜.研究发现,引入5 wt%的PSF-g-P(PEGMA),共混膜的孔隙率和平均孔径分别从65.9%和0.08μm提高到81.9%和0.18μm;将共混膜于90℃热水中浸泡24 h后,膜表面O/S从14.63提高到17.16;共混膜的亲水性和抗牛血清蛋白(BSA)吸附性能显著提升.A novel amphiphilic copolymer having polysulfone （PSF） backbone and poly [ poly （ethylene glycol） methyl ether methaerylate] side chains [ PSF-g-P （PEGMA） 1 was synthesized by ATRP, using ehloromethylated polysulfone as macroinitiator. The resultant copolymer was characterized by FT-IR and ^1H-NMR. The molecular weight of PSF-g-P（PEGMA） was calculated as 6.34 × 10^4 based on ^1H-NMR analysis, the molar fraction and weight fraction of P（PEGMA） in the copolymer was 0.711 and 39.6 wt%, respectively. A series of PSF blend membranes containing various amounts of PSF-g-P（PEGMA） were prepared by the wet phase inversion process and were characterized by SEM, XPS, water contact angle and bovin serum albumin （BSA） adsorption. The experimental results showed that the introduction of PSF-g-P（PEGMA） can significantly improve the hydrophilicity and foulingresistance of PSF membranes. For instance, the initial water contact angle of the PSF membrane containing 20 wt % PSF-g-P（PEGMA） was 43.5°. After 50 s,the blend membrane was completely wetted by water. The apparent BSA adsorption amount of the same membrane was extremely low compared to that of the pure PSF membrane.

关 键 词：PSF ATRP 梳状两亲性共聚物 共混 超滤膜 

分 类 号：TB383.2[一般工业技术—材料科学与工程]