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研究生:楊坤豪
研究生(外文):YANG, KUN-HAO
論文名稱:聚嗍碸/聚醚醯亞胺親水性改質膜應用於滲透蒸發分離乙醇/水溶液之研究
論文名稱(外文):Hydrophilic Modification of Polyimide/polysulfone Membranes for Dehydration of Ethanol/water Mixture by Pervaporation
指導教授:陳世雄陳世雄引用關係
指導教授(外文):Chen, SHIH-HSIUNG
口試委員:黃世梁陳世雄劉瑞美
口試委員(外文):Huang, SHIH-LIANGChen, SHIH-HSIUNGLIOU, REY-MAY
口試日期:2017-06-28
學位類別:碩士
校院名稱:嘉南藥理大學
系所名稱:環境工程與科學系
學門:工程學門
學類:環境工程學類
論文種類:學術論文
論文出版年:2017
畢業學年度:105
語文別:中文
論文頁數:96
中文關鍵詞:滲透蒸發聚嗍碸聚醚醯亞胺聚乙烯亞胺離子化親水性
外文關鍵詞:PervaporationPolysulfonePolyether imidepoly ethylene imineionizationhydrophilic properties
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本研究之主要目的為探討親水性聚乙烯亞胺(Poly(ethylenimine))改質聚嗍碸(Polysulfone)、聚醚醯亞胺(Polyetherimide)製備出非對稱複合膜並應用於滲透透蒸發乙醇/水溶液分離。研究中利用水作為沉澱劑以濕式相轉換將PSF、PSF/PEI膜成型並利用UV光促進PEI披覆反應並增加膜面之親水性,研究中利用接觸角測量儀探討薄膜親水性改質程度並以滲透蒸發測試探討滲透蒸發分離性能之提升。
研究中探討高分子濃度變化、聚乙烯亞胺濃度變化、離子化、進料濃度及溫度變化對滲透蒸發效能之影響,研究結果發現,隨著高分子濃度增加其薄膜緻密層增厚而降低膨潤所造成選擇性增加,其通透量分別為158 g/m2hr、267 g/m2hr、186 g/m2hr,選擇性分別為255、211、334,而以UV光披覆聚乙烯亞胺改質聚嗍碸、聚醚醯亞胺、聚嗍碸/聚醚醯亞胺,其通透量分別為164g/m2hr、279g/m2hr、186g/m2hr,選擇性為553、511、524,能夠有效提升選擇性,且在接觸角測試結果顯示,聚乙烯亞胺改質顯示親水性增加。以上改質薄膜離子化後可對滲透蒸發分離性能有良好之效果,其通透量分別為187 g/m2hr、229 g/m2hr、200 g/m2hr,選擇性分別為541、545、636。研究結果顯示高溫下其水合能力降低,高分子分子鏈間隙變大,導致薄膜分離係數下降、透過率增加之原因,當乙醇進料濃度增加時水合作用變小,膨潤度減少使物質穿透薄膜時其穿透能力影響變差。藉由聚乙烯亞胺改質非對稱薄膜可有效增進親水性並製備出具有高滲透蒸發分離性能對於乙醇/水溶液分離之複合膜。
The purpose of this investigation is focused on the hydrophilic modification of polysulfone(PSF), poly ether imide(PEI), and polysulfone/ poly ether imide membranes on the improvement of separation performance of pervaporation process for dehydration of ethanol/water mixtures. The wet phase inversion method was used to prepare the modified membranes and posted coating poly ethylene imine for hydrophilic enhancement. The hydrophilic properties of modified membranes were tested by water contact angle measurement.
The influent factors on the separation performance of modified membranes were included casting polymer concentration, poly ethylene imine concentration, ionization, feed ethanol concentration and operation temperature in pervaporation process. It was found that the increase in casting polymer concentration increased the skin layer thickness and improved the separation factors of membrane. The optimum prepared polysulfone membrane presented a 267 g/m2hr permeation flux and 334 separation factor. The best poly ethylene imine coating membrane showed a 200 g/m2hr permeation flux and 636 separation factor on pervaporation test. It is worth to noted that those modified membrane will be further increased the separation factor after using the chloride acid ionization. The permeation flux increased with increasing the operation temperature during the PV test due to the enhancement on polymer chain mobility of in the PV process. On the other hand, the feed ethanol concentration on the membrane swelling properties showed the significantly changed the permeation and separation behavior in the PV process. It is concluded that the modification of polyethylene imine coating and ionization exactly increased the hydrophilic of membranes and also improved the separation performance in this investigation.
目錄
摘要 I
Abstract III
致謝 IV
目錄 V
圖目錄 IX
表目錄 XI
第一章、前言 1
1-1、研究緣起 1
1-2、研究目的 1
第二章、文獻回顧 2
2-1、薄膜定義 2
2-1-1、薄膜分離程序 2
2-1-2、薄膜材料 5
2-2、薄膜結構 7
2-3、薄膜型態 9
2-4、高分子薄膜之製備方式 11
2-5、滲透蒸發分離程序 14
2-6、高分子薄膜改質技術 16
2-6-1、交聯 16
2-6-2、摻合 16
2-6-3、磺酸化 16
2-6-4、化學接枝 17
2-6-5、電漿改質 17
第三章、實驗材料與方法 18
3-1、實驗藥品及氣體 18
3-2、實驗儀器與設備 19
3-3、實驗方法 21
3-3-1、高分子鑄模溶液配製 21
3-3-2、高分子鑄模溶液條件 21
3-3-3、平板膜之製備 22
3-3-4、聚乙烯亞胺披覆膜製備 23
3-3-5、薄膜離子化製備 24
3-3-6、滲透蒸發膜組封裝 24
3-3-7、滲透蒸發測試 25
3-3-8、接觸角測試 27
3-3-9、膨潤度測試 27
第四章、結果與討論 28
4-1、聚嗍碸非對稱薄膜對滲透蒸發分離性能之探討 28
4-1-1、聚嗍碸膜濃度變化對滲透蒸發分離性能之影響 28
4-1-2、聚嗍碸披覆後對滲透蒸發分離性能之影響 32
4-1-3、聚嗍碸離子化對滲透蒸發分離性能之影響 34
4-1-4、聚嗍碸濃度變化、PEI披覆後、鹽酸離子化對接觸角之影響 36
4-1-5、乙醇/水進料濃度與溫度變化對滲透蒸發性能之影響 38
4-1-6、聚嗍碸膨潤度之乙醇濃度變化 41
4-2、聚醚醯亞胺非對稱薄膜對滲透蒸發分離性能之探討 43
4-2-1、聚醚醯亞胺濃度變化對對滲透蒸發分離性能之影響 43
4-2-2、聚醚醯亞胺披覆後對滲透蒸發分離性能之影響 46
4-2-3、聚醚醯亞胺離子化對滲透蒸發分離性能之影響 48
4-2-4、聚醚醯亞胺濃度變化、PEI披覆後、鹽酸離子化對接觸角之影響 50
4-2-5、乙醇/水進料濃度與溫度變化對滲透蒸發性能之影響 53
4-2-6、聚醚醯亞胺膨潤度之乙醇濃度變化 55
4-3、聚嗍碸/聚醚醯亞胺複合膜對滲透蒸發分離性能之探討 57
4-3-1、聚嗍碸/聚醚醯亞胺濃度變化對對滲透蒸發分離性能之影響 57
4-3-2、聚嗍碸/聚醚醯亞胺披覆後對滲透蒸發分離性能之影響 61
4-3-3、聚嗍碸/聚醚醯亞胺離子化對滲透蒸發分離性能之影響 63
4-3-4、聚嗍碸/聚醚醯亞胺濃度變化、PEI披覆後、鹽酸離子化對接觸角之影響 65
4-3-5、乙醇/水進料濃度與溫度變化對滲透蒸發性能之影響 67
4-3-6、聚嗍碸/聚醚醯亞胺膨潤度之乙醇濃度變化 70
第五章、結論 72
參考文獻 74


圖目錄
圖2-1薄膜兩端相態系統示意圖 3
圖2-2薄膜結構分類圖 8
圖2-3平板膜示意圖 10
圖2-4管狀膜示意圖 10
圖2-5螺旋捲膜示意圖 10
圖2-6中空纖維膜示意圖 10
圖2-7滲透蒸發原理圖 15
圖3-1聚嗍碸之化學結構圖 18
圖3-2聚醚醯亞胺之化學結構圖 18
圖3-3聚乙烯亞胺之化學結構圖 18
圖3-4平板膜製備流程圖 22
圖3-5聚乙烯亞胺披覆膜流程圖 23
圖3-6滲透室膜組(Pervaporation cell)封裝示意圖 24
圖3-7滲透蒸發實驗(Pervaporation)裝置圖 26
圖4-1聚嗍碸濃度變化對滲透蒸發分離性能之影響 30
圖4-2聚嗍碸濃度變化之滲透蒸發分離指標 31
圖4-3聚嗍碸披覆後對滲透蒸發分離性能之影響圖 33
圖4-4聚嗍碸離子化對滲透蒸發分離性能之影響圖 35
圖4-5聚嗍碸濃度變化、PEI披覆後、鹽酸離子化對接觸角之影響 37
圖4-6聚嗍碸乙醇/水進料溫度變化對滲透蒸發性能之影響 39
圖4-7聚嗍碸乙醇/水進料濃度變化對滲透蒸發性能之影響 40
圖4-8聚嗍碸膨潤度之乙醇濃度變化 42
圖4-9聚醚醯亞胺濃度變化對滲透蒸發分離性能之影響 44
圖4-10聚醚醯亞胺濃度之滲透蒸發分離指標 45
圖4-11聚醚醯亞胺披覆後對滲透蒸發分離性能之影響圖 47
圖4-12聚醚醯亞胺接離子化對滲透蒸發分離性能之影響 49
圖4-13聚醚醯亞胺濃度變化、PEI披覆後、鹽酸離子化對接觸角之影響 51
圖4-14聚醚醯亞胺乙醇/水進料溫度變化對滲透蒸發性能之影響 53
圖4-15聚醚醯亞胺乙醇/水進料濃度變化對滲透蒸發性能之影響 54
圖4-16聚醚醯亞胺膨潤度之乙醇濃度變化 56
圖4-17聚嗍碸/聚醚醯亞胺濃度變化對對滲透蒸發分離性能之影響 59
圖4-18聚嗍碸/聚醚醯亞胺濃度之滲透蒸發分離指標 60
圖4-19聚嗍碸/聚醚醯亞胺披覆後對滲透蒸發分離性能之影響圖 62
圖4-20為聚嗍碸/聚醚醯亞胺離子化對滲透蒸發分離性能之影響 64
圖4-21聚嗍碸/聚醚醯亞胺濃度變化、PEI披覆後、鹽酸離子化對接觸角之影響 66
圖4-22聚嗍碸/聚醚醯亞胺乙醇/水進料溫度變化對滲透蒸發性能之影響 68
圖4-23聚嗍碸/聚醚醯亞胺乙醇/水進料濃度變化對滲透蒸發性能之影響 69
圖4-24聚嗍碸/聚醚醯亞胺膨潤度之乙醇濃度變化 71

表目錄
表2-1不同薄膜程序、型態、驅動力及應用程序 4
表2-2不同高分子聚合物膜材的優缺點 6
表3-1鑄模溶夜條件(wt%) 21



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