PMWCNT/PVDF ultrafiltration membranes with enhanced antifouling properties intensified by electric field for efficient blood purification
PMWCNT/PVDF ultrafiltration membranes with enhanced antifouling properties intensified by electric field for efficient blood purification
复制标题
DOI：
10.1016/j.memsci.2019.01.015
复制
发表时间：
2019-04
影响因子：
9.5
通讯作者：
Caini Liu;Wang Wenyi;Yanling Li;Fangyan Cui;C. Xie;Liuyong Zhu;Bojin Shan
中科院分区：
文献类型：
--
作者：
Caini Liu;Wang Wenyi;Yanling Li;Fangyan Cui;C. Xie;Liuyong Zhu;Bojin Shan
采用相转化法制备了聚偏二氟乙烯（PVDF）和聚乙二醇-多壁碳纳米管（PMWCNT）混合超滤膜。与原始PVDF膜相比，PMWCNT/PVDF杂化膜表现出显着更高的水通量（384Lm−2h−1）、更稳定的牛血清白蛋白（BSA）截留率以及由于更好的亲水性而具有更好的防污性能。此外，施加弱电场（直流电，约2Vcm−1）可以进一步降低PMWCNT/PVDF杂化膜的防污性能。更重要的是，PMWCNTs/PVDF膜表现出迄今为止报道的最低溶血率0.4%，提高了血液相容性和血液安全性。而且，引入弱电场后，红细胞的粘附被最小化。本研究表明，新型PMWCNT/PVDF杂化膜具有优异的防污能力和血液相容性，为PVDF膜的应用开辟了新领域。
Hybrid ultrafiltration membranes of poly(vinylidene fluoride) (PVDF) and poly(ethylene glycol)-multi-walled carbon nanotubes (PMWCNTs) have been prepared via phase inversion method. Compared with pristine PVDF membranes, PMWCNT/PVDF hybrid membranes showed a significant higher water flux (384 L m−2h−1), more stable rejection rate of bovine serum albumin (BSA) and better antifouling properties because of better hydrophilicity. Besides, the antifouling properties of PMWCNT/PVDF hybrid membranes can be further reduced applying a weak electric field (direct current, about 2 V cm−1). More important, PMWCNTs/PVDF membrane exhibited the lowest hemolysis ratio of 0.4% ever reported, which has improved the hemocompatibility and safety of blood. Moreover, after the introduction of weak electric field, the adhesion of red blood cells is minimized. This study shows that the novel PMWCNT/PVDF hybrid membranes have excellent antifouling ability and hemocompatibility which opens up a new field for the application of PVDF membranes.