- 【SCI通讯】Study on properties of ultrafiltration membar- ne prepared by hydro- lyzed polyacrylonitrile
- 点击次数：
- 所属单位：化学工程学院
- 发表刊物：Desalination and Water Treatment
- 项目来源：自选课题
- 关键字：Polyacrylonitrile membrane; Hydrolysis modified; High water flux; Anti-pollution
- 摘要：Hydrophilic polyacrylonitrile (HPAN) ultrafiltration membranes were successfully prepared by the phase inversion method with hydrolysis modified polyacrylonitrile as the basic materials. The effect of hydrolysis time of polyacrylonitrile on the morphology and performance of the HPAN ultrafiltration membranes were investigated by the approaches of ultrafiltration experiments, porosity testing, scanning electron microscopy, attenuated total reflectance-Fourier-transform infrared spectroscopy, water contact goniometer angle and dynamic anti-contamination. The results showed that the hydrophilicity, pore connectivity, porosity and pure water flux of the membranes could be improved by increasing the hydrolysis time of polyacrylonitrile (PAN). However, the longer hydrolysis time will lead to degradation of PAN, resulting in a decrease of the retention rate and mechanical strength. Through comprehensive consideration, when the hydrolysis time was 2 h, the HPAN ultrafiltration membrane exhibited excellent water permeate flux and good anti-pollution ability almost without decreasing the retention and mechanical strength. Thus, the proper hydrolysis degree could improve the separation efficiency, prolong the life cycle and reduce the operational costs of the polyacrylonitrile membrane. In addition, the presence of carboxyl groups due to hydrolysis provides unlimited possibilities for further modification of HPAN membranes.
- 第一作者：杨亚楠
- 论文类型：期刊论文
- 卷号：207
- 页面范围：1
- 是否译文：否
- 发表时间：2020-12-12
