No 9 李霞等 : 基于多巴胺自聚合与表面接枝 PHGH 制备抗菌纳滤膜 MgSO 4 MgCl 2 Na 2 SO 4 NaCl E coil 1 2 Fig 1 Structure of PHGH % % N N- 79% h Tri

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1 Vol 35 高等学校化学学报 No CHEMICAL JOURNAL OF CHINESE UNIVERSITIES 2026 ~ 2030 doi /cjcu PHGH 李霞 1,2, 曹义鸣 1, 康国栋 1, 于海军 1 1,2, 刘中楠 PHGH ATR-FTIR SEM PHGH PHGH PHGH PHGH 3% 98 5% O631 TQ028 8 A 200 ~ ~ Dopamine DA PDA 8 ~ 10 NH 2 NH SH Schiff Michael PHGH PHGH PSF Udel-3500 Amoco -400 N N- Tris AA03A BAI11B13 ymcao@ dicp ac cn

2 No 9 李霞等 : 基于多巴胺自聚合与表面接枝 PHGH 制备抗菌纳滤膜 MgSO 4 MgCl 2 Na 2 SO 4 NaCl E coil 1 2 Fig 1 Structure of PHGH % % N N- 79% h Tris-HCl ph = g /L PSF 24 h PSF /PDA Tris-HCl ph = 8 5 PHGH PHGH 24 h PHGH PSF /PDA-PHGH Equinox 55 JSM-6360LV JC2000C Grafting degree Grafting degree = m 1 - m 0 /A 1 m 1 m 0 μg A cm mol /L 0 1 g /L 0 6 MPa J / L m - 2 h - 1 R J = V /At R = 1 - c p /c f 100% V L A m 2 t h c f mol /L c p mol /L DDS-12DW UVmini E coil 16 E coil BPY h h h AR AR = 1 - C /B 100% B C PSF /PDA cm - 1 N H O H 2 c PHGH PSF /PDA-PHGH 1636 cm - 1 C N cm - 1 CH 2 PSF /PDA-PHGH Fig 2 ATR-FTIR spectra of membrane samples PHGH O H a PSF b PSF /PDA c PSF /PDA-3% PHGH 2 3 4

2028 高等学校化学学报 Vol 35 3 SEM PSF 17 PHGH PHGH PHGH SEM 3 A 2 ~ D 2 PHGH Fig 3 2 2 SEM images surface A 1 D 1 cross-section A 2 D 2

angle of membrane samples PSF a PSF b PSF /PDA c PSF /PDA-1% PHGH d PSF /PDA-2% PHGH e PSF /PDA-3% PHGH 2 3 PSF /PDA PHGH 5 PHGH

3 2028 高等学校化学学报 Vol 35 3 SEM PSF 17 PHGH PHGH PHGH SEM 3 A 2 ~ D 2 PHGH Fig SEM images surface A 1 D 1 cross-section A 2 D 2 of membrane samples A PSF B PSF /PDA C PSF /PDA-1% PHGH D PSF /PDA-3% PHGH 4 PSF PSF PSF PHGH PHGH PHGH Fig 4 Contact angle of membrane samples PSF a PSF b PSF /PDA c PSF /PDA-1% PHGH d PSF /PDA-2% PHGH e PSF /PDA-3% PHGH 2 3 PSF /PDA PHGH 5 PHGH PHGH PHGH PHGH PHGH PHGH MgCl 2 PHGH MgCl 2 PHGH PHGH 7 PSF /PDA PSF /PDA-PHGH MgCl 2 > MgSO 4 > Na 2 SO 4 > NaCl PDA PHGH

No 9 李霞等 : 基于多巴胺自聚合与表面接枝 PHGH 制备抗菌纳滤膜 2029 Fig 5 Influence of PHGH content on grafting Fig 6 Infiuence of PHGH concent on the performance degree of composite membranes Fig 7 Rejections of different

4 No 9 李霞等 : 基于多巴胺自聚合与表面接枝 PHGH 制备抗菌纳滤膜 2029 Fig 5 Influence of PHGH content on grafting Fig 6 Infiuence of PHGH concent on the performance degree of composite membranes Fig 7 Rejections of different inorganic salts for composite membranes Fig 8 Infiuence of PHGH concent on rejections of different dyes for composite membranes 8 PHGH 3 PHGH PHGH 3% 100% 90 5% % PHGH PHGH 3% 98 5% PHGH PHGH Mg 2 + Ca PHGH Table 1 Antibacterial activity of composite membranes against E coli Membrane sample AR % Membrane sample AR % PSF /PDA 50 5 ± 6 8 PSF /PDA-2% PHGH 92 8 ± 1 1 PSF /PDA-1% PHGH 85 5 ± 4 6 PSF /PDA-3% PHGH 98 5 ± 1 4 PHGH PSF PSF 90 5% PHGH PHGH 3% 98 5% 1 Mansourpanah Y Madaeni S S Rahimpour A J Membr Sci / Chen S H Chang D J Liou R M Hsu C S Lin S S J Appl Polym Sci

5 2030 高等学校化学学报 Vol 35 3 Li L C Wang B G Tan H M T Chen L Xu J P J Membr Sci Hilal N Al-Zoubi H Darwish N A Mohamma A W Abu Arabi M Desalination Raman L P Cheryan M Rajagopalan N Chem Eng Prog Ciston S Lueptow R M Gray K A J Membr Sci / Zodrow K Brunet L Mahendra S Li D Zhang A Li Q L Alvarez P J J Water Res Xu C J Xu K M Gu H W Zheng R K Liu H Zhang X X Guo Z H Xu B J Am Chem Soc Lee H Dellatore S M Miller W M Messersmith P B Science Kang S M You I Cho W K Shon H K Lee T G Choi I S Karp J M Lee H Angew Chem Int Ed Zhu L P Xu Y Y Xi Z Y Zhu B K Acta Polym Sin McCloskey B D Park H B Ju H Rowe B W Miller D J Freeman B D J Membr Sci / Zhang Y M Jiang J M Chen Y Polymer Gilbert P Moore L E J Appl Microbiol Yu H J Cao Y M Kang G D Zhou M Q Liu J H Yuan Q Chem J Chinese Universities Wang X Xu J Jiang Y Y Gao X L Gao C J Chem J Chinese Universities Cheng C Li S Zhao W F Wei Q Nie S Q Sun S D Zhao C S J Membr Sci / Preparation of Antimicrobial Nanofiltration Membrane via Self-polymerization of Dopamine and Surface Grafting of PHGH LI Xia 1 2 CAO Yiming 1* KANG Guodong 1 YU Haijun 1 LIU Zhongnan Dalian Institute of Chemical Physics Chinese Academy of Sciences Dalian China 2 University of Chinese Academy of Sciences Beijing China Abstract A novel antimicrobial nanofiltration membrane was fabricated by the self-polymerization of dopamine on polysulfone membrane surface and following surface grafting of polyhexamethylene guanidine hydrochloride PHGH in aqueous conditions The membrane structures morphologies and hydrophilicity were characterized by attenuated total reflectance-fourier transform infrared spectroscopy ATR-FTIR scanning electron microscopy SEM and water contact angle measurement The concentration of PHGH on grafting degree and filtration performance were investigated Furthermore the antibacterial performance of composite membranes was evaluated The results showed that an active layer with nanofiltration performance was formed on polysulfone membrane surface and the hydrophilicity of membranes was significantly improved by the introduction of dopamine and PHGH The fluxes decreased while the rejections of inorganic salts and dyes increased with the increasing concentration of PHGH The composite membranes after grafting exhibited excellent antibacterial performance when mass fraction of PHGH was 3% the antibacterial rate reached up to 98 5% Keywords property Dopamine Polyhexamethylene guanidine hydrochloride Nanofiltration membrane Antimicrobial ( Ed : D,Z) Supported by the National Natural Science Foundation of China No the National High Technology Research and Development Program of China No 2012AA03A611 and the National Key Technology R & D Program of China No 2014BAI11B13

s 15 contact s W Si 3 N μm N / m 4 AFM 95% AFM WPOJ UPOJ WPOJ UPOJ 260 ~ 280 nm WPOJ-DS UPOJ-DS 1 cm 1 cm DEAE-ce

s 15 contact s W Si 3 N μm N / m 4 AFM 95% AFM WPOJ UPOJ WPOJ UPOJ 260 ~ 280 nm WPOJ-DS UPOJ-DS 1 cm 1 cm DEAE-ce 32 1 2013 2 Journal of Chinese Electron Microscopy Society Vol. 32 No. 1 2013-02 1000-6281 2013 01-0054-08 1 1* 2 1 1 1. 2. 710062 AFM SEM WPOJ-DS UPOJ-DS WPOJ-DS β- UPOJ-DS AFM WPOJ-DS UPOJ-DS SEM UPOJ-DS