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標題: | 直接界面聚合微孔聚醯胺薄膜於巨孔陶瓷中空纖維及其於奈米過濾之應用 Direct Interfacial Polymerization of Microporous Polyamide Thin-Film on Macroporous Ceramic Hollow Fiber for Nanofiltration |
作者: | Wei-Zhi Huang 黃韋智 |
指導教授: | 童國倫(Kuo-Lun Tung) |
關鍵字: | 聚醯胺,界面聚合,陶瓷,複合薄膜,奈米過濾, Polyamide,Interfacial Polymerization,Ceramic,Thin Film Composite Membrane,Nanofiltration, |
出版年 : | 2020 |
學位: | 碩士 |
摘要: | 聚醯胺複合薄膜已被廣泛應用在許多薄膜分離程序,但若在嚴峻的條件下使用具有有機支撐層的聚醯胺複合薄膜,將會引起有機支撐層的毀損,另外,聚醯胺複合平板膜與聚醯胺複合中空纖維膜相比,具有較低的填充密度。為了解決上述兩個問題,以陶瓷中空纖維為基材製備聚醯胺複合薄膜已在最近的研究中得到關注。據我們所知,目前尚未有研究可直接於巨孔洞陶瓷中空纖維上進行界面聚合製備聚醯胺薄膜,而在本研究中將提出可使用巨孔洞陶瓷中空纖維為基材製備外部選擇層聚醯胺複合薄膜的方法,並將此薄膜應用於奈米過濾。為了提升陶瓷支撐層與聚醯胺選擇層之相容性,本研究中製備了具有平滑、富含羥基及超高親水性表面的氧化鋁中空纖維基材,此基材之孔洞大小為219.4 nm,而純水滲透係數為4593 ± 139 LMH/bar。本研究所製備的聚醯胺複合中空纖維薄膜具有340 g/mol的截留分子量及9.5 ± 0.4 LMH/bar的純水滲透係數,並展現接近100 %的染料阻擋率。我們認為,這項研究提供了直接於巨孔洞陶瓷中空纖維上進行界面聚合製備微孔聚醯胺薄膜的有效方法。 Polyamide (PA) thin-film composite (TFC) membranes have been widely used in various membrane-based separation processes. However, PA TFC membranes with organic support have low harsh-environment resistance, and the commonly used TFC membranes are flat-sheet which have low packing-density. To alleviate the aforementioned problems, PA TFC membranes with ceramic hollow fiber (HF) support were developed and attracted attention in recent research. To our knowledge, none of the studies have fabricated PA thin-film by direct interfacial polymerization (IP) on the macroporous ceramic HF support. Herein, we propose an approach to prepare the outer-selective PA TFC nanofiltration (NF) membrane supported by the macroporous ceramic HF. To make the support compatible to PA thin-film, we prepared an alumina HF with a smooth, –OH groups abundant, and ultra-hydrophilic surface. This HF has the pore size of 219.4 nm and the pure water permeability (PWP) of 4593 ± 139 LMH/bar. The NF test results show that the as-synthesized PA TFC membrane possesses the MWCO of 340 g/mol, PWP of 9.5 ± 0.4 LMH/bar, and nearly 100 % rejection of dyes. We believe that this study provides the facile approach for directly synthesizing microporous PA thin-thin via IP on the macroporous ceramic HF. |
URI: | http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/58683 |
DOI: | 10.6342/NTU202001437 |
全文授權: | 有償授權 |
顯示於系所單位: | 化學工程學系 |
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