摘要
以聚偏氯乙烯(PVDF)为膜材料,PVP为成孔剂,在不同SnCl2添加量下,通过非溶剂致相分离(NIPS)法原位制备了SnO2-GO改性的PVDF膜;利用FTIR、SEM、接触角等仪器对膜的表面化学性质、微观结构形貌、亲水性进行了表征,并以牛血清白蛋白BSA作为模拟污染物评价了膜的渗水性能、截留性能以及抗污染性能,考察了SnCl2加入量的不同对膜的结构与渗透性能的影响。研究结果表明,SnCl2的加入可改善膜的亲水性,随着SnCl2加入量的逐渐增加,改性膜的水通量和通量恢复率先开始增大后逐渐减小,其中加入SnCl2的适合量为0.3 g。
Using polyvinylidene fluoride(PVDF)as the membrane material and PVP as the pore-forming agent,SnO 2-GO blended PVDF membranes were prepared in situ by non-solvent induced phase separation method under different SnCl 2 additions.The surface chemical properties,microstructure morphology,and hydrophilicity were characterized by FTIR,SEM and contact angle,and the water permeability,retention performance,and anti-pollution performance of the membrane were analyzed using BSA as a simulated pollutant.The results show that the addition of SnCl 2 reagent improves the hydrophilicity of the original membrane to a certain extent.However,with the gradual increase in the amount of SnCl 2 reagent added,the water flux and flux recovery rate of the modified membrane began to increase first and then gradually decreased,and the most appropriate amount of SnCl 2 was 0.3 g.
作者
李林飞
陈镇
陈桂娥
曹旭晖
LI Linfei;CHEN Zhen;CHEN Gui’e;CAO Xuhui(School of Chemical and Environmental Engineering,Shanghai Institute of Technology,Shanghai 201418,China)
出处
《应用技术学报》
2020年第4期323-327,共5页
Journal of Technology
基金
2020届毕业设计(论文)重点项目上海应用技术大学(3311LW200027-A22)资助。
关键词
聚偏氟乙烯超滤膜
氧化石墨烯
氧化锡
非溶剂致相分离法
抗污染
polyvinylidene fluoride(PVDF)ultrafiltration membrane
graphene oxide
tin oxide
non-solvent induced phase separation method
anti-fouling
