Mulyati Sri, Muchtar Syawaliah, Arahman Nasrul, Meirisa Friska, Syamsuddin Yanna, Zuhra Zuhra, Rosnelly Cut Meurah, Shamsuddin Norazanita, Mat Nawi Normi Izati, Wirzal Mohd Dzul Hakim, Bilad Muhammad Roil, Takagi Ryosuke, Matsuyama Hideto
Department of Chemical Engineering, Universitas Syiah Kuala, Banda Aceh 23111, Indonesia.
Faculty of Integrated Technologies, Universiti Brunei Darussalam, Jalan Tungku Link BE1410, Brunei.
Polymers (Basel). 2020 Aug 12;12(8):1807. doi: 10.3390/polym12081807.
This paper reports the fabrication of polyethersulfone membranes via in situ hydrogen peroxide-assisted polymerization of dopamine. The dopamine and hydrogen peroxide were introduced into the dope solution where the polymerization occurred, resulting in a single-step additive formation during membrane fabrication. The effectivity of modification was evaluated through characterizations of the resulting membranes in terms of chemical functional groups, surface morphology, porosity, contact angle, mechanical strength and filtration of humic acid solution. The results confirm that the polydopamine was formed during the dope solution mixing through peroxide-assisted polymerization as proven by the appearance of peaks associated OH and NH groups in the resulting membranes. The presence of polydopamine residual in the membrane matric enhances the pore properties in terms of size and porosity (by a factor of 10), and by lowering the hydrophilicity (from 69° to 53°) which leads to enhanced filtration flux of up to 217 L/m h. The presence of the residual polydopamine also enhances membrane surface hydrophilicity which improve the antifouling properties as shown from the flux recovery ratio of > 80%.
本文报道了通过多巴胺原位过氧化氢辅助聚合制备聚醚砜膜的方法。将多巴胺和过氧化氢引入到发生聚合反应的铸膜液中，从而在制膜过程中一步形成添加剂。通过对所得膜的化学官能团、表面形态、孔隙率、接触角、机械强度和腐殖酸溶液过滤性能的表征，评估改性效果。结果证实，在铸膜液混合过程中通过过氧化物辅助聚合形成了聚多巴胺，所得膜中与OH和NH基团相关的峰的出现证明了这一点。膜基质中残留的聚多巴胺的存在增强了膜的孔径和孔隙率（提高了10倍），并降低了亲水性（从69°降至53°），从而使过滤通量提高到217 L/m·h。残留聚多巴胺的存在还增强了膜表面的亲水性，从通量恢复率>80%可以看出，这改善了抗污染性能。
