Choi Jeongdong, Kim Eun-Sik
Department of Environmental Engineering, Korea National University of Transportation, Chungju, Chungbuk 27469, Korea.
Department of Environmental System Engineering, Chonnam National University, Yeosu, 59626, Korea.
J Nanosci Nanotechnol. 2021 Jul 1;21(7):3711-3715. doi: 10.1166/jnn.2021.19208.
This study investigated experimental parameters to fabricate polymeric carbon nanocomposite hollow-fiber membranes with graphene oxide and multi-walled carbon nanotubes. This case was different from that of flat-sheet type membranes in that the characteristics of the hollow-fiber type membranes were affected by the structure of the spinneret, the flow rate of the injected polymer and draw solution, and the mixing ratio. The membranes were characterized in terms of mechanical strength, porosity, hydrophilicity, and permeate flux using different solutions. The results reveal a mechanical strength of the carbon nanocomposite hollow-fiber membranes that is about 47.8% higher than that of hollow-fiber membranes without carbon nanomaterials. The porosity and surface hydrophilicity changed to produce more applicable membranes for water and wastewater treatment. As for the permeate flux, the nanocomposite membrane with graphene oxide showed a higher flux compared to the multi-walled carbon nanotubes membrane, which could be influenced by structural effects of the carbon materials.
本研究调查了制备含有氧化石墨烯和多壁碳纳米管的聚合物碳纳米复合中空纤维膜的实验参数。这种情况与平板型膜不同，因为中空纤维型膜的特性受喷丝头结构、注入聚合物和凝固浴的流速以及混合比例的影响。使用不同溶液对膜的机械强度、孔隙率、亲水性和渗透通量进行了表征。结果表明，碳纳米复合中空纤维膜的机械强度比不含碳纳米材料的中空纤维膜高约47.8%。孔隙率和表面亲水性发生了变化，从而制得更适用于水和废水处理的膜。至于渗透通量，与多壁碳纳米管膜相比，含有氧化石墨烯的纳米复合膜显示出更高的通量，这可能受碳材料结构效应的影响。
