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一种耐细菌粘附纳滤膜的制备及其性能研究

作者：王希，江志彬，洪鑫军，何远涛，陈顺权，苗晶

单位： 1.广东膜材料和膜分离省重点实验室，广州中国科学院先进技术研究所，广州 511458；2.中化（宁波）润沃膜科技有限公司，浙江宁波，315700；3.华南师范大学化学学院，广州，510006

关键词：羧甲基壳聚糖，氧化石墨烯，聚酰胺，金黄色葡萄球菌，抗细菌粘附污染

DOI号：

分类号： TQ028.8

出版年,卷(期):页码： 2021,41(1):64-72

摘要：

羧甲基壳聚糖(NOCC)和均苯三甲酰氯(TMC)作为水相和油相材料，经界面聚合制得的聚酰胺复合纳滤膜，通量较低、抗细菌粘附污染性能较差。本工作中，在羧甲基壳聚糖水相溶液中加入氧化石墨烯（GO），采用界面聚合方法制备了高截留率、具有较好抗细菌粘附污染性能的荷负电氧化石墨烯-聚酰胺/聚砜（GO-PA/PSF)有机/无机杂化复合纳滤膜。采用扫描电子显微镜（SEM）、傅里叶变换衰减全反射红外光谱（ATR-FTIR）、原子力显微镜（AFM）、接触角（CA）、及表面Zeta电位等对该膜的形貌、物理化学性质进行了表征，并对结果进行了分析。考察和讨论了GO-PA/PSF有机/无机杂化复合纳滤膜的通量、截留率、以及对金黄色葡萄球菌的抗粘附污染性能。研究结果表明，适量的GO加入能够有效地提高聚酰胺纳滤膜的分离性能和对金黄色葡萄球菌的抗粘附污染性能。

The polyamide composite nanofiltration membranes were developed using N, O-carboxymethyl chitosan (NOCC) and trimethyl chloride (TMC) as the materials of the oil phase and aqueous phase, respectively. The resultant NF membranes showed relatively low permeate fluxes, and it was easy for the bacteria to be attached to the membrane surface. In this work, a negatively charged polyamide-graphene oxide (GO) composite NF membranes were fabricated through the addition of GO into the NOCC aqueous solution, i.e. the aqueous phase. The resultant GO-PA/PSF hybrid composite NF membranes showed higher rejections, better antimicrobial and antifouling capabilities. The morphologies, physical and chemical characteristics of the resultant composite NF membranes were characterized with scanning electronic microscopy (SEM), attenuated total reflectance-Fourier transform infrared (ATR-FTIR), atomic force microscopy (AFM), contact angle, and Zeta potential. The rejection performances and the antimicrobial and antifouling capabilities to Staphylococcus aureus were investigated symmetrically. It suggested that the addition of a certain amount of GO in the aqueous phase could effectively improve the rejection performances, antimicrobial and antifouling capabilities.

基金项目：

广东省产学研合作项目（2016B090918048）、质量评价导向的特种膜中药绿色制造技术及其专属装备集成研究（2019YFC1711300），中国科学院科技服务网络计划（STS计划）区域重点项目（KFJ-STS-QYZX-043）

作者简介：

王希（1987.7-），女，黑龙江哈尔滨，工程师，硕士研究生，研究方向：膜材料改性，E-mail:xi.wang@giat.ac.cn；江志彬（1992.7-），男，广东梅州，博士研究生，研究方向：纳滤膜分离材料、锂电池隔膜材料，E-mail:2018010147@m.scnu.edu.cn；

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