abstract
A polypropylene hollow fiber membrane (PPHFM) was obtained by UV grafting polyacrylic acid (PAA) on the surface. The hydrophilicity of PPHFM was improved with water contact angle reduced from 82.3° to 73.6°. The photoinitiator and monomer concentration conditions had significant effects on the grafting rates. After modification, the pure water flux decreased, but the rejection rate was improved.
Funding
This work is financially supported by the Natural Science Foundation of China (21375069, 21404065, 21574072), the Natural Science Foundation for Distinguished Young Scientists of Shandong Province (JQ201403), the Project of Shandong Province Higher Educational Science and Technology Program (J15LC20), the Graduate Education Innovation Project of Shandong Province (SDYY14028), the Scientific Research Foundation for the Returned Overseas Chinese Scholars of State Education Ministry (20111568), and the Postdoctoral Scientific Research Foundation of Qingdao.