Effect of Graphene Oxide nanoparticles on the Molecular Weight Cut-Off of Polysulfone Ultrafiltration Membrane
Paper ID : 1492-ICNS
Authors:
Rahim Dehghan1, Jalal Barzin *2
1Faculty of science, Biomaterials department, Iran polymer and petrochemical institute, Tehran, Iran.
2Faculty of science, Biomaterials department, Iran Polymer and Petrochemical Institute, Tehran, Iran.
Abstract:
Polysulfone (PSf) is one of attractive polymers for use in biomedical membranes specially blood purification industries. Here, in order to separation of high molecular weights and crossing of lower molecular weights substances, PSf, Polyvinylpyrrolidone (PVP), glycerol and graphene oxide (GO) nano-particles were used in casting solution for preparation of a desire membrane. SEM examination revealed by adding of GO nanoparticles, membrane morphology changed from spongy structure to a half-spongy and finger like morphology. Molecular weight cut-off (MWCO) analysis exhibited that by addition of GO, MWCO was increased. Also according to the ratio of MWCO/Molecular weight retention onset (MWRO), it was found that, by addition of GO nanoparticles, MWCO/MWRO was decreased which confirmed selectivity of membrane. Mean pore size measurement demonstrated that by adding GO, mean pore diameter of membranes was increased. Bovine serum albumin (BSA) flux reduction rate confirmed resistance of membranes against biofouling was increased by adding of GO nano-particles.
Keywords:
Polysulfone, Graphene oxide, molecular weight cut-off, molecular weight retention onset
Status : Abstract Accepted (Poster Presentation)