School of Chemical Engineering & Materials Science, Chung-Ang University, Heuksuk-ro 84 Dongjak-gu, Seoul 06974, Korea
중앙대학교 화학신소재공학부
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To overcome the disadvantages of polyethersulfone (PES) as an ultrafiltration membrane material including hydrophobicity and low antibacterial properties, an aminated PES (aPES) membrane grafted with graphene oxide (GO) onto the membrane surface (aPES-GO) were prepared. The water flux of the aPES ultrafiltration membrane increased as the aPES content in the membrane increased, and when the aPES content in the membrane was 20 wt% or less, the solute rejection of the membrane was almost the same as that of PES. The water flux of the aPES-GO membrane increased further as the amount of grafted GO increased without a reduction in solute rejection. In addition, the aPES-GO membrane exhibited excellent antifouling characteristics due to the antibacterial properties provided by GO and the hydrophilicity originated from aPES and GO.
한외여과막 재료로서 폴리에테르설폰(PES)의 단점인 소수성과 낮은 항균성을 극복하기 위해, 아민화된 PES (aPES) 막 표면에 그래핀 옥사이드(GO)가 그래프트된 한외여과막을(aPES-GO) 제조하였다. aPES 한외여과막의 수투과도는 분리막 내의 aPES 함량이 증가함에 따라 증가하였고, 분리막 내의 aPES 함량이 20 wt% 이하일 경우 분리막의 용질 제거율은 PES 분리막과 거의 동일하였다. aPES-GO 한외여과막의 수투과도는 용질 제거율의 감소 없이 그래프트된 GO의 양이 증가함에 따라 더욱 증가하였다. 또한, aPES-GO 멤브레인은 GO에 기인한 항균성과 aPES 및 GO에 의해 부여된 친수성으로 인해 우수한 내오염 특성을 나타냈다.
Keywords: aminated polyethersulfone membrane, graphene oxide, ultrafiltration, hydrophilicity, antibacterial property.
2022; 46(6): 843-848
Published online Nov 25, 2022
School of Chemical Engineering & Materials Science, Chung-Ang University, Heuksuk-ro 84 Dongjak-gu, Seoul 06974, Korea