薄膜滲透蒸發分離是具有取代部分傳統蒸餾程序的低耗能新技術，滲透蒸發分離效能完全取決於薄膜的性能，因此，本研究探討調控共聚高分子的共聚單體組成以開發高效能的滲透蒸發薄膜為目標。研究利用自由基聚合反應(free-radical polymerization)進行丙烯睛(Acrylonitrile, AN)、丙烯酸(Acrylic acid, AA)單體共聚合，透過調控共聚單體比率控制共聚高分子的水親和性、膨潤性及微結構，共聚高分子(PANA)的產率約為0.7。研究中亦進行丙烯睛(Acrylonitrile, AN)、丙烯酸羥基乙酯(2-Hydroxyethyl acrylate, HEA)共聚合產生PANH共聚合物，PANH與PANA比較以了解親水分子鏈段改變對薄膜滲透蒸發效能的影響。為了增加共聚高分子薄膜的實用性，本研究結合乾式、濕式製膜法製作PANA/P84/PA複合薄膜。
紅外光譜儀器、核磁共振儀器被用於鑑定共聚高分子的特定官能基，透過官能基分析得到PANA及 PANH共聚高分子的實際組成狀態，元素分析則得到實際高分子共聚物中丙烯腈、丙烯酸的莫爾分率，並確認PANA55與PANH55具有相似的共聚單體莫爾分率。熱重分析儀、微差示掃描熱卡計被用於分析共聚高分子的熱穩定性、玻璃轉移溫度。由膨潤度測試得知PANA共聚高分子中PAA含量增加有助於提升共聚物的膨潤性。X光繞射結果顯示AA共聚增加共聚合物的d-spacing。
PANA55薄膜在70wt%異丙醇/水滲透蒸發測得通量920.7 g hr-1 m-2，透過物水濃度97.5%，比PAN薄膜通量高出8.9倍。PANH55薄膜在70wt%異丙醇水滲透蒸發測得通量564.8 g hr-1 m-2，透過物水濃度98.1%，相較同樣莫爾分率之PANA55有較低通量及較高選擇性。PANA55薄膜的變溫測試及變動進料組成測試證明，PANA55複合薄膜能在高溫、高水濃度下操作。

Membrane pervaporation is a new technology with low energy consumption that can replace some traditional distillation operations. The separation efficiency of pervaporation completely depends on the performance of the membrane. Therefore, this work discusses the control of the co-monomer composition of the copolymer to develop high-efficiency pervaporation membranes. The free-radical polymerization reaction was used to copolymerize acrylonitrile and acrylic acid monomers named PANA, and the water affinity, swelling and microstructure of the copolymer were controlled by adjusting the co-monomer ratio. The yield of the copolymer was about 0.7. This work also copolymerize acrylonitrile and 2-Hydroxyethyl acrylate monomers named PANH, and compare with PANA to know the influence of pervaporation efficiency by hydrophility change. In order to increase the practicability of the copolymer membrane, the PANA/P84/PA composite membrane was fabricated by combining dry and wet methods.
Infrared spectroscopy and nuclear magnetic resonance are used to identify specific functional groups in copolymers. The actual composition of PANA copolymers can be obtained through functional group analysis, and the molar fraction of acrylonitrile and acrylic acid in the actual polymer copolymers can be obtained through elemental analysis. It is confirmed that PANA55 and PANH55 have similar co-monomer molar ratio. Thermogravimetric analyzer and differential scanning calorimeter were used to analyze the thermal stability and glass transition temperature of copolymers. From the swelling degree test, it is known that the increase of PAA content in the PANA copolymer helps to improve the swelling of the copolymer. X-ray diffraction results show that the copolymerized of AA increases the d-spacing of the copolymer.
Based on the pervaporation test, the flux of PANA55 membrane was 920. 7 g hr-1 m-2 and the water concentration in permeate was 97.5%, which was 8.9 times higher than that of the PAN membrane. In 70wt% IPA mixture pervaporation, the flux of PANH55 membranes was 564.8 g hr-1 m-2 and the water concentration in permeate was 98.1%, PANH55 got lower flux and higher selectivity. The variable temperature and variable feed composition test prove that the PANA55 composite membrane can operate at high temperature and high water concentration feed.

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