空气除湿用抗菌透湿复合膜的制备  

Preparation of antibacterial moisture permeable composite membrane for air dehumidification

作　　者：李楠[1] 李香香[1] 张雨欣 LI Nan;LI Xiang-xiang;ZHANG Yu-xin(City College,Xi′an Jiaotong University,Xi′an 710018,China)

机构地区：[1]西安交通大学城市学院,陕西西安710018

出　　处：《化学工程师》2024年第4期110-113,共4页Chemical Engineer

基　　金：陕西省自然科学基础研究计划项目(2022JQ-969);陕西省教育厅科研专项(20JK0739)。

摘　　要：为提高膜式全热交换器的除湿性能并使膜具备抗菌性能,以LiCl为亲水添加剂,AgNO_(3)为抗菌剂,添加到聚乙烯醇(PVA)水溶液中制成铸膜液,以聚丙烯(PP)膜为支撑层,制备了一种抗菌透湿复合膜。搭建了薄膜透湿性测量平台,测试了复合膜的水蒸气透过量,对复合膜的抗菌性进行了检测。结果表明,复合膜的水蒸气透过量随LiCl含量的增加而增加,LiCl含量为5%的复合膜是不含LiCl复合膜的1.79倍,是商用纸膜的2.67倍。加入AgNO_(3)后薄膜的透湿性没有明显变化,抗菌实验结果显示,复合膜对表皮葡萄球菌、大肠杆菌有抗菌作用,对表皮葡萄球菌的抗菌作用更强。In order to improve the dehumidification performance and antibacterial performance of the membrane heat exchanger,an antibacterial and moisture permeable composite membrane was prepared by adding lithium chloride(LiCl)as hydrophilic additive and silver nitrate(AgNO_(3))as antibacterial agent into polyvinyl alcohol(PVA)aqueous solution to make casting solution and polypropylene(PP)membrane as a support layer.A film moisture permeability measurement platform was built to test the water vapor permeability of the composite film and the antibacterial properties of the composite film.The results showed that the water vapor permeability of the composite film increased with the increase of lithium chloride content.The composite film with 5%lithium chloride content was 1.79 times higher than that without lithium chloride and 2.67 times higher than that of commercial paper film.After adding silver nitrate,the moisture permeability of the film did not change significantly.The antibacterial experiment results showed that the composite film had antibacterial effect on Staphylococcus epidermidis and Escherichia coli,and had stronger antibacterial effect on Staphylococcus epidermidis.

关 键 词：复合膜 透湿膜 抗菌膜 水蒸气透过性 

分 类 号：TQ317[化学工程—高聚物工业]