Radiation-induced cross-linking:a novel avenue to permanent 3D modification of polymeric membranes

• 作者: Yu Gu Bo-Wu Zhang Zhen Guo Ji-Hao Li Ming Yu Lin-Fan Li Jing-Ye Li
• 来源期刊: 核技术（英文版）
• 年，卷（期）: 2021,（7）
• 所属期刊栏目: NUCLEAR CHEMISTRY, RADIOCHEMISTRY, AND NUCLEAR MEDICINE
• 页码范围: 31-45
• 页数: 15页
• 语种: 英文

摘要

Membrane fouling is always the biggest problem in the practice of membrane separation technologies,which strongly impacts their applicability,separation efficiency,cost effectiveness,and service lifespan.Herein,a simple but effective 3D modification approach was designed for permanently functionalizing polymeric membranes by directly cross-linking polyvinyl alcohol(PVA)under gamma-ray irradiation at room temperature without any additives.After the modification,a PVA layer was con-structed on the membrane surface and the pore inner sur-face of polyvinylidene fluoride(PVDF)membranes.This endowed them with good hydrophilicity,low adsorption of protein model foulants,and easy recoverability properties.In addition,the pore size and distribution were customized by controlling the PVA concentration,which enhanced the rejection ability of the resultant membranes and converted