本研究以異丙醇與蒸餾水為共溶劑使用靜電紡絲法製備疏水性高分子次微米纖維，分為聚甲基丙烯酸甲酯纖維與聚甲基丙烯酸甲酯/聚醋酸乙烯酯混摻纖維兩個部分。
在特定比例下溶解聚甲基丙烯酸甲酯，異於傳統使用的氯甲烷、二氯甲烷、甲苯等高危害性溶劑，利用靜電紡絲技術，獲得次微米/奈米纖維，直徑約0.65-0.85微米，並具有高疏水性，對水的接觸角可達133 °，經滴水測試可確定纖維不會被水溶解或破壞變形。
因聚甲基丙烯酸甲酯的材料特性偏剛硬脆斷，其所紡纖維易折斷，為了解決此問題，研究亦在環保的共溶劑中加入聚醋酸乙烯酯以提升柔軟性，降低複合材料之玻璃轉移溫度，靜電紡絲所獲得的纖維直徑約0.5-3微米，同樣具有高疏水性，對水的接觸角可達133 °，經滴水測試可確定纖維不被水溶解或破壞變形，期盼本研究之系統及製程能達到節能、減污及環保循環的特點。

In this study, it was adopted rubbing alcohol (2-propanol/water) as the solvent to prepare poly(methyl methacrylate) (PMMA) submicron fibers and PMMA/poly(vinyl acetate) (PVAc) blend submicron fibers by the electrospinning technique. The solvents commonly used to dissolve PMMA, such as acetone, tetrahydrofuran, chloroform, toluene, etc., are harmful and environmentally unfriendly. Therefore, the green and economical co-solvent system, 2-propanol + water, were employed. It was found that both PMMA and PMMA/PVAc solutions can be electrospun near room temperature to yield good quality fibers. By controlling the solution concentration and spinning parameters (e.g., voltage, diameter of needle, solution conductivity, etc.) fibers with diameters of 0.5~3 μm were obtainable. In addition, both electrospun PMMA and PMMA/PVAc mats were waterproof and demonstrated superb hydrophobicity with contact angles > 130 °, and the later has higher strength in terms of bendability.

目錄
誌謝	I
中文摘要	II
英文摘要	III
目錄	IV
表目錄	VI
圖目錄	VII
第一章 序論	1
第二章 文獻回顧	3
2.1影響電紡的因素	3
2.2溶劑選擇	5
第三章 實驗部分	8
3.1實驗藥品	8
3.2實驗方法與流程	9
3.2.1 PMMA溶液製備	9
3.2.2 PMMA/PVAc溶液製備	9
3.2.3靜電紡絲	9
3.3實驗設備及儀器	10
第四章 結果與討論(Ι)：電紡PMMA纖維	12
4.1高分子分子量及濃度之影響	12
4.2其餘電紡參數之影響	15
4.2.1電壓	15
4.2.2水的品質(導電度)	16
4.2.3紡絲時間	18
4.2.4不鏽鋼針徑	18
4.3防水測試	19
第五章 結果與討論(ΙΙ)：電紡PMMA/PVAc纖維	20
5.1高分子分子量及濃度之影響	20
5.2製程與黏度之影響	22
5.3高分子溶液之黏度和濃度關係與表面張力、導電度之影響	25
5.4溶劑比例之影響	27
5.5高分子比例之影響	29
5.6物性分析	30
5.6.1防水測試	30
5.6.2彎折測試	31
5.6.3 FTIR、DSC、TGA	32
第六章 結論	34
參考文獻	35
附錄A	40
附錄B	45
附錄C	47
附錄D	48
附錄E	49
 
表目錄
表1-1靜電紡絲之應用[11,32]	2
表4-1不同品質的水為共溶劑得到之電紡結果	16
表5-1電紡3 wt%的製程差異比較	22
表5-2電紡4.5 wt%的製程差異比較	24
表5-3不同濃度的表面張力與導電度	26
表5-4不同濃度的導電度	26
表5-5不同溶劑比例的黏度、電壓、纖維直徑(PMMA/PVAc=1/1，w/w)	27
表5-6不同高分子重量比例(1/1之3 wt%為圖5-6，4.5 wt%為表5-2)	29
表5-7彎折測試項目	31
表A-1電紡PMMA重量平均分子量~120,000	43
表A-2電紡PMMA重量平均分子量~400,000	44
表B-1不同針徑比較(流速0.05 mL/min、電壓7.4 kV)	45
表E-1電紡PMMA/PVAc = 1/1(IPA：H2O = 7：2)	49
表E-2電紡PMMA/PVAc = 1/3的6 wt%	50
 
圖目錄
圖1-1靜電紡絲示意圖	1
圖1-2溶液受靜電感應示意圖	1
圖2-1靜電紡絲中各項因素[12]	3
圖2-2 PMMA－IPA－H2O三成份系統在25℃時平衡相圖[72]	5
圖2-3 PMMA－PVAc－IPA－H2O四成份系統在25℃時平衡相圖[73]	6
圖2-4異丙醇與水之共沸點氣/液相圖[74]	6
圖2-5異丙醇與水之密度/黏度變化圖[75]	7
圖3-1 靜電紡絲轉接套組組裝圖	9
圖3-2靜電紡絲機台、溫度控制系統(右下)、針筒推進器(幫浦)(右上)	11
圖4-1 PMMA不同分子量的ne值	12
圖4-2電紡1.5 wt% PMMA溶液所獲得之纖維(5.5 kV、0.05 mL/min)	13
圖4-3電紡1.6 wt% PMMA溶液所獲得之纖維(5.9 kV、0.05 mL/min)	14
圖4-4電紡1.5 wt% PMMA溶液所獲得之纖維(7.1 kV-蒸餾水-30分鐘)	15
圖4-5電紡1.5 wt% PMMA溶液所獲得之纖維(7.1 kV-去離子水)	16
圖4-6電紡1.5 wt% PMMA溶液所獲得之纖維(7.4 kV-去離子水)	17
圖4-7電紡1.5 wt% PMMA溶液所獲得之纖維(7.4 kV-自來水-22G)	17
圖4-8電紡1.5 wt% PMMA溶液紡絲10分鐘所獲得之纖維	18
圖4-9電紡1.6 wt% PMMA溶液所獲得之纖維，(左)滴水前，(右)滴水後	19
圖5-1電紡PMMA/PVAc 10 wt%溶液所獲得之纖維(8.5 kV、0.05 mL/min)	20
圖5-2電紡PMMA/PVAc 1.5 wt%溶液所獲得之纖維(11 kV、0.05 mL/min)	21
圖5-3電紡PMMA/PVAc 2 wt%溶液所獲得之纖維(8.5 kV、0.05 mL/min)	21
圖5-4高分子溶液之黏度與濃度分佈圖	25
圖5-5電紡7.8/2的3 wt%溶液所獲得之纖維	27
圖5-6電紡7/2的3 wt%溶液所獲得之纖維	28
圖5-7電紡6.5/2的3 wt%溶液所獲得之纖維	28
圖5-8電紡PMMA/PVAc = 3/1(3 wt%)所獲得之纖維	29
圖5-9電紡PMMA/PVAc = 1/3(4.5 wt%)所獲得之纖維	29
圖5-10電紡3 wt% PMMA/PVAc溶液所獲得之纖維，(左)滴水前，(右)滴水後	30
圖5-11彎折測試：左邊PMMA/PVAc之纖維，右邊PMMA之纖維	31
圖5-12 PMMA與PVAc高分子原料與紡絲成品之FTIR-ATR光譜圖	32
圖5-13高分子原料與紡絲成品的二次升溫DSC熱分析圖	33
圖5-14高分子原料與紡絲成品的TGA熱分析圖	33
圖A-1電紡5 wt% PMMA溶液所獲得之纖維	42
圖A-2電紡8 wt% PMMA溶液所獲得之纖維	42
圖A-3電紡1 wt% PMMA溶液所獲得之纖維	42
圖A-4電紡1.2 wt% PMMA溶液所獲得之纖維	42
圖B-1電紡1.5 wt% PMMA溶液所獲得之纖維(7.4 kV-自來水-24G)	45
圖B-2電紡1.5 wt% PMMA溶液所獲得之纖維(7.4 kV-自來水-25G)	46
圖C-1電紡9 wt% PVA溶液所獲得之纖維，(左)滴水前，(右)滴水後	47
圖D-1加熱一小時，冷卻半小時，攪拌五天的4.5 wt%溶液之黏度	48

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