负载纳米银磺化聚醚砜超滤膜的制备及其抗菌性

发布时间：2018-03-20 05:12

本文选题：聚醚砜　切入点：纳米银　出处：《精细化工》2017年06期 　论文类型：期刊论文

【摘要】：为了改善聚醚砜(PES)膜的抗污染性能,将PES磺化并制成超滤膜,然后将超滤膜浸渍在硝酸银溶液中,吸附Ag~+的超滤膜在维生素C的还原作用下将Ag负载在膜表面,制备了负载纳米银磺化超滤聚醚砜膜(SPES-Ag)。通过扫描电镜(SEM)、原子力显微镜(AFM)、X射线衍射(XRD)对SPES-Ag超滤膜进行了表征,并通过细胞吸附法进行了抗菌性测试。结果表明,纳米银的平均尺寸为120 nm,它的负载提高了超滤膜的抗菌性能,对大肠杆菌、假单胞菌和金黄色葡萄球菌的抗菌率分别达到了96.7%,98.3%,87.7%。此外,水通量和截留率的测试结果表明,SPES-Ag超滤膜的水通量为438.4 L/(m~2·h),对牛血清蛋白(BSA)的截留率达到94.3%。
[Abstract]:In order to improve the antifouling performance of polyethersulfone (PES) membrane, PES was sulfonated and made into ultrafiltration membrane. Then the ultrafiltration membrane was impregnated in silver nitrate solution, and Ag was loaded on the membrane surface by the reduction of vitamin C. Nano-silver sulfonated ultrafiltration polyethersulfone membrane was prepared. The SPES-Ag ultrafiltration membrane was characterized by scanning electron microscopy (SEM) and atomic force microscope (AFM). The antibacterial properties of the membrane were tested by cell adsorption method. The average size of nano-silver is 120 nm, and its loading improves the antibacterial performance of ultrafiltration membrane. The antibacterial rate against Escherichia coli, Pseudomonas pseudomonas and Staphylococcus aureus is 96.798. 3% and 87.7% respectively. The results of water flux and retention rate showed that the water flux of SPES-Ag ultrafiltration membrane was 438.4 L / m ~ (2) 路h ~ (-1), and the rejection rate of bovine serum protein (BSA) was 94.33%.
【作者单位】：华南理工大学食品科学与工程学院;广州百花香料股份有限公司;
【基金】：广东省科技装备动员项目(x2sk B2160440) 广州市产学研协同创新重大专项项目(201508020086) 广东省应用型科技研发专项资金项目(2015B020230001)~~
【分类号】：TQ051.893

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