膜科学与技术

Position：Home >> Abstract

Study on polyamide thin-film composite reverse osmosis membrane modified by UV grafting and its properties

Authors： NI Ling，LIAO Qian, Chen Xianhong, HU Qunhui, PENG Bo, LU Hongwei

Units： 1.Hunan University of Technology, Zhuzhou 412008, China; 2. Hunan Ovay Technology Co. Ltd , Zhuzhou 412000, China

KeyWords： reverse osmosis membrane; photoinitiator; grafting modification;zwitterion;anti-fouling

ClassificationCode：TQ028.8

year,volume(issue):pagination： 2023,43(3):37-43

Abstract：

In this study, sulfobetaine methacrylate (SBMA), a zwitterionic compound, was successfully grafted onto the surface of polyamide thin-film composite (TFC) reverse osmosis(RO) membrane through UV grafting method. The chemical structure, surface morphology, zeta potential and hydrophilicity of the TFC RO membrane were characterized by attenuated total reflection infrared spectroscopy(ATR-FTIR), field emission scanning electron microscopy(FE-SEM), electro-kinetic analyzer and contact angle analyzer, respectively. Membrane separation performance and antifouling property were investigated through cross-flow permeation tests. The experimental results showed that the amphoteric monomer could be successfully grafted onto the surface of polyamide reverse osmosis membrane by ultraviolet radiation, and the isoelectric point of the membrane surface shifted to neutral after grafting. When the concentration of graft monomer was 100 mmol/L, the modified membrane (M-100) had the best comprehensive performance, showing an average water flux of 48.0 LMH and sodium chloride rejection of 99.57%; The flux decay of the modified membrane M-100 in filtration of bovine serum albumin (BSA) solution was 9.2%, and the flux recovery ratio after cleaning was 96.9%, indicating good anti fouling performance and cleaning recovery performance.

Funds：

2021关键技术攻关及成果转化“高性能海水淡化反渗透膜材料研发及产业化项目”（株科办【2021】42号）；湖南省自然科学基金项目（2022JJ50004）；湖南省教育厅科学研究项目（20A149）。

AuthorIntro：

倪玲（1983-06）,女，辽宁庄河人，高级工程师，博士研究生，研究方向：高分子膜材料及其应用研究，E-mail：nil408@qq.com

Reference：

[1] 高从堦. 反渗透膜分离技术的创新性进展[J]. 膜科学与技术, 2006, 26(6): 1-4.
[2] 高从堦, 周勇, 刘立芬. 反渗透海水淡化技术现状和展望[J]. 海洋技术学报, 2016, 35(1): 1-14.
[3] 陈欢林, 瞿新营, 张林,等. 新型反渗透膜的研究进展[J]. 膜科学与技术, 2011, 31(3): 101-109.
[4] 席丹, 曹从军, 齐萨仁,等. 超薄皮层反渗透复合膜制备技术的研究进展[J]. 化工进展, 2020, 39(10): 4073-4080.
[5] 曹阳, 任玉灵, 郭世伟,等. 聚酰胺薄层复合膜的界面聚合制备过程调控研究进展[J]. 化工进展, 2020, 39(6): 2125-2134.
[6] 俞三传. 界面聚合反渗透复合膜材料及其表面修饰[J]. 膜科学与技术, 2011, 31(3): 172-175.
[7] Tang C Y, Kwon Y N, Leckie J O. Probing the nano-and micro-scales of reverse osmosis membranes-A comprehensive characterization of physiochemical properties of uncoated and coated membranes by XPS, TEM, ATR-FTIR, and streaming potential measurements[J]. Journal of Membrane Science, 2007, 287(1): 146-156.
[8] Tang C Y, Kwon Y N, Leckie J O. Effect of membrane chemistry and coating layer on physiochemical properties of thin film composite polyamide RO and NF membranes: I. FTIR and XPS characterization of polyamide and coating layer chemistry[J]. Desalination, 2009, 242(1/2/3): 149-167.
[9] Tang C Y, Kwon Y N, Leckie J O. Effect of membrane chemistry and coating layer on physiochemical properties of thin film composite polyamide RO and NF membranes: II. Membrane physiochemical properties and their dependence on polyamide and coating layers[J]. Desalination, 2009, 242(1/2/3): 168-182.
[10] Wu J , Wang Z , Wang Y , et al. Polyvinylamine-grafted polyamide reverse osmosis membrane with improved antifouling property[J]. Journal of Membrane Science, 2015, 495:1-13.
[11] Hu Q, Zhou F, Lu H, et al. Improved antifouling performance of a polyamide composite reverse osmosis membrane by surface grafting of dialdehyde carboxymethyl cellulose (DACMC)[J]. Journal of Membrane Science, 2021, 620: 118843.
[12] Zou L, Vidalis I, Steele D, et al. Surface hydrophilic modification of RO membranes by plasma polymerization for low organic fouling[J]. Journal of Membrane Science, 2011, 369(1/2): 420-428.
[13] 胡群辉, 周丰平, 彭博,等. 表面接枝改性聚酰胺复合反渗透膜及其性能研究[J]. 膜科学与技术, 2019, 39(1): 22-27.
[14] Shim J K, Na H S, Lee Y M, et al. Surface modification of polypropylene membranes by γ-ray induced graft copolymerization and their solute permeation characteristics[J]. Journal of Membrane Science, 2001, 190(2): 215-226.
[15] Ma H, Davis R H, Bowman C N. A novel sequential photoinduced living graft polymerization[J]. Macromolecules, 2000, 33(2): 331-335.
[16] Guo Y S, Weng X D, Wu B, et al. Construction of nonfouling nanofiltration membrane via introducing uniformly tunable zwitterionic layer[J]. Journal of Membrane Science, 2019, 583: 152-162.
[17] Weng X, Ji Y, Zhao F, et al. Tailoring the structure of polyamide thin film composite membrane with zwitterions to achieve high water permeability and antifouling property[J]. RSC Advances, 2015, 5(120): 98730-98739.

Service：

【Download】【Collect】

《膜科学与技术》编辑部 Address: Bluestar building, 19 east beisanhuan road, chaoyang district, Beijing; 100029 Postal code; Telephone：010-80492417/010-80485372; Fax：010-80485372 ; Email：mkxyjs@163.com