Graphene oxide functionalized with zwitterionic copolymers as selective layers in hybrid membranes with high pervaporation performance

doi:10.1016/j.memsci.2019.117188

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Title:	Graphene oxide functionalized with zwitterionic copolymers as selective layers in hybrid membranes with high pervaporation performance
Authors:	Ang, Micah Belle Marie Yap Gallardo, Marwin R. Dizon, Gian Vincent C. De Guzman, Manuel Reyes Tayo, Lemmuel L. Huang, Shu-Hsien Cheng-Lee Lai(賴振立) Tsai, Hui-An Hung, Wei-Song Hu, Chien-Chieh Chang, Yung Lee, Kueir-Rarn
Contributors:	Chung Yuan Christian Univ, Dept Chem Engn, R&D Ctr Membrane Technol Mapua Univ, Sch Chem Biol & Mat Engn & Sci Sichuan Univ Sci & Engn, Mat Corros & Protect Key Lab Sichuan Prov, Coll Mat Sci & Engn Natl Ilan Univ, Dept Chem & Mat Engn Chia Nan Univ Pharm & Sci, Dept Environm Engn & Sci Natl Taiwan Univ Sci & Technol, Grad Inst Appl Sci & Technol
Keywords:	Graphene oxide Pervaporation Zwitterion Pressure-assisted filtration
Date:	2019-10
Issue Date:	2020-07-29 13:51:08 (UTC+8)
Publisher:	ELSEVIER SCIENCE BV
Abstract:	Zwitterionic copolymers, poly(glycidyl methacrylate-sulfobetaine methacrylate) [poly(GMA-SBMA)], was incorporated into graphene oxide (GO) to form a GO-poly(GMA-SBMA) framework. This compound was then deposited onto a polysulfone support through pressure-assisted filtration to fabricate hybrid membranes. Optimum fabrication conditions were determined by varying the poly(GMA-SBMA) loading. Attenuated total reflectance-Fourier transform infrared and X-ray photoelectron spectroscopy confirmed the covalent bonding between poly(GMA-SBMA) and GO. On account of loading incremental amounts of poly(GMA-SBMA), the membrane thickness was increased (illustrated by field emission scanning electron microscopic images), the interlayer spacing between GO sheets was expanded (shown by X-ray diffraction patterns), and the membrane hydrophilic properties were enhanced (indicated by water contact angle data). Relative to the pristine GO membrane, hybrid membranes fabricated at optimum conditions exhibited superior separation performance (99.60 wt% water concentration in permeate and 1102 gm(-2).h(-1) permeation flux) on dehydrating a 70 wt% aqueous isopropanol solution by pervaporation. This present study explored the potential of poly(GMA-SBMA) for developing hybrid membranes with excellent pervaporation performance.
Relation:	Journal of Membrane Science, v.587, UNSP 117188
Appears in Collections:	[Dept. of Environmental Engineering and Science (including master's program)] Periodical Articles

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