화학공학소재연구정보센터
홈 로그인 로그아웃 연락처 사이트맵
Korean Journal of Chemical Engineering, Vol.33, No.3, 1028-1036, March, 2016
DOI10.1007/s11814-015-0193-9  Export Citation
Effect of CO2-laser irradiation on properties and performance of thin-film composite polyamide reverse osmosis membrane
Foad Jahangiri1, Seyyed Abbas Mousavi1, 2, †, Fathollah Farhadi1, Vahid Vatanpour3, Behnam Sabzi1, and Zeinab Chenari4
  • 1Department of Chemical and Petroleum Engineering, Sharif University of Technology, Azadi Ave., Tehran, Iran
  • 2Sharif Membrane Research and Technology Center, Sharif University of Technology, Azadi Ave., Tehran, Iran
  • 3Faculty of Chemistry, Kharazmi (Tarbiat Moallem) University, Tehran, Iran
  • 4Laser and Plasma Research Institute, Shahid Beheshti University, Evin, Tehran, Iran
E-mail:
CO2-laser irradiation was used to modify the surface properties of thin-film composite (TFC) polyamide reverse osmosis (RO) membranes. These membranes were first synthesized via interfacial polymerization of m-phenylenediamine (MPD) monomers and trimesoyl chloride (TMC) over porous polysulfone ultrafiltration support, followed by a CO2-irradiation. AFM, ATR-FTIR, SEM and contact angle measurements were used to characterize the surface properties of these membranes. The ATR-FTIR results indicated that CO2-laser irradiation did not induce any functional groups on the membrane surface. However, it was found that the laser irradiation enhanced the NaCl salt rejection and slightly reduced the permeate flux. Moreover, the maintenance of the flux in modified membranes was much higher than untreated ones. Specially, after 180 min of filtration, the reduction in initial flux for the unmodified membranes was 22%. However, the reduction in initial flux for the modified membranes was less than 5%. Bovine serum albumin (BSA) filtration revealed an improvement in the antifouling properties of the modified membranes. The changes in the membrane surface morphology showed that the roughness of membrane surface is reduced significantly.
Keywords:CO2-laser Irradiation;Polyamide Membrane;Surface Modification;Fouling Reduction
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