抗生物污染的聚丙烯腈/壳聚糖中空纤维膜的制备与性能
Preparation and performance of biofouling resistant PAN/chitosan hollow fiber membranes.
作者信息
Shanthana Lakshmi D, Jaiswar Santlal, Saxena Mayank, Tasselli Franco, Raval Hiren D
机构信息
Reverse Osmosis Division, Council of Scientific and Industrial Research (CSIR), Central Salt and Marine Chemicals Research Institute (CSIR-CSMCRI), G. B. Marg, Bhavnagar, Gujarat, 364 002, India.
Marine Biotechnology and Ecology Division, Council of Scientific and Industrial Research (CSIR), Central Salt and Marine Chemicals Research Institute (CSIR-CSMCRI), G. B. Marg, Bhavnagar, Gujarat, 364 002, India.
出版信息
3 Biotech. 2017 Jul;7(3):224. doi: 10.1007/s13205-017-0798-2. Epub 2017 Jul 4.
The preparation of polyacrylonitrile (PAN) hollow fiber (HF) membranes has been carried out by dry-jet wet spinning. PAN HF membranes were coated with chitosan biopolymers 2 wt% by dip coating and further crosslinked by chemical reagents (Tri sodium polyphosphate). PAN HF (Virgin) and PAN/chitosan coated membrane were characterized by SEM and tested for water flux. Proteins Pepsin, Albumin, and Clay of 1000 ppm concentration were tested for separation efficiency. In addition, bacterial species Escherichia coli and Bacillus subtilis were tested for fouling control efficiency and found out that PAN/chitosan membranes were quite superior to virgin PAN fibers. The adhesion of bacterial cells on the surface of the hollow fiber membranes assessed through alcian blue staining and SEM analysis. It was observed that PAN/chitosan membranes (310A and 310C) possessed best antibacterial activities (based on SEM results), qualifying them as a very promising candidates for anti-biofouling coatings.
通过干喷湿纺法制备了聚丙烯腈（PAN）中空纤维（HF）膜。采用浸涂法用2 wt%的壳聚糖生物聚合物对PAN HF膜进行涂覆，并通过化学试剂（三聚磷酸钠）进一步交联。通过扫描电子显微镜（SEM）对PAN HF（原始）膜和PAN/壳聚糖涂层膜进行了表征，并测试了水通量。对浓度为1000 ppm的胃蛋白酶、白蛋白和粘土等蛋白质进行了分离效率测试。此外，对大肠杆菌和枯草芽孢杆菌等细菌物种进行了抗污染效率测试，发现PAN/壳聚糖膜比原始PAN纤维具有明显优势。通过阿尔辛蓝染色和SEM分析评估了细菌细胞在中空纤维膜表面的粘附情况。观察到PAN/壳聚糖膜（310A和310C）具有最佳的抗菌活性（基于SEM结果），使其成为非常有前途的抗生物污染涂层候选材料。
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