title: Performance enhancement of polyvinyl chloride ultrafiltration membrane modified with graphene oxide.
abstract: A novel polyvinyl chloride (PVC) membrane was modified with graphene oxide (GO) via phase inversion method to improve its hydrophilicity and mechanical properties. The GO presented a large amount of hydrophilic groups after the modification through the modified Hummers method. It was observed that with the addition of low fraction of GO powder, the GO/PVC hybrid membranes exhibited a significant enhancement in hydrophilicity, water flux, and mechanical properties. With optimal dosage (0.1wt%), the pure water flux of GO/PVC membrane increased from 232.6L/(m(2)hbar) to 430.0L/(m(2)hbar) and the tensile strength increased from 231.3cN to 305.3cN. The improved properties of the PVC/GO hybrid membranes are mainly attributed to the strong hydrophilicity of functional groups on the GO surface, indicating that GO has a promising candidate for modification of PVC ultrafiltration membranes in wastewater treatment.
authors.affiliation: School of Material Science and Chemical Engineering, Harbin Engineering University, Harbin 150001, China; State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin 150090, China.
authors.forename: Yuanyuan
authors.initials: Y
authors.lastname: Zhao
authors.affiliation: School of Material Science and Chemical Engineering, Harbin Engineering University, Harbin 150001, China.
authors.forename: Jiaqi
authors.initials: J
authors.lastname: Lu
authors.affiliation: Shale Water Research Center, 8285 El Rio St., Houston, TX 77054, USA.
authors.forename: Xuyang
authors.initials: X
authors.lastname: Liu
authors.affiliation: School of Material Science and Chemical Engineering, Harbin Engineering University, Harbin 150001, China.
authors.forename: Yudan
authors.initials: Y
authors.lastname: Wang
authors.affiliation: College of Environment and Resources, Qi Shan Campus, Fuzhou University, No. 2 Xueyuan Road, University Town, 350108 Fuzhou, Fujian, China. Electronic address: linjiuyang@126.com.
authors.forename: Jiuyang
authors.initials: J
authors.lastname: Lin
authors.affiliation: Jiangsu Kaimi Membrane Technology Co. Ltd., 210049 Nanjing, Jiangsu, China.
authors.forename: Na
authors.initials: N
authors.lastname: Peng
authors.affiliation: School of Material Science and Chemical Engineering, Harbin Engineering University, Harbin 150001, China.
authors.forename: Jingchun
authors.initials: J
authors.lastname: Li
authors.affiliation: School of Material Science and Chemical Engineering, Harbin Engineering University, Harbin 150001, China; State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin 150090, China. Electronic address: zfbhit@163.com.
authors.forename: Fangbo
authors.initials: F
authors.lastname: Zhao
keywords: Graphene oxide; Hydrophilicity; Mechanical property; Polyvinyl chloride; Ultrafiltration