臺灣博碩士論文加值系統

本研究針對具奈米孔洞之PTFE薄膜上之PVA(聚乙烯醇)塗佈層，或聚乙烯醇/聚乙烯亞胺(PVA/BPEI)混和塗佈層，做180度撕裂測試(Peel Test)，與透濕量測 (Measurement of Water-Vapor Permeability, WVP)。目的為找出最佳PVA配方，以期PTFE膜及PVA膜的複合膜能有最大透濕量與PVA膜的最大黏著力。最佳製膜的條件為，10wt%的PVA/BPEI(2/1) 溶於85℃ 水中，塗佈於PTFE膜上之後，120 ~ 180℃乾燥10min為最佳條件。PVA/BPEI(2/1)混合膜在黏著力以及透濕能力的表現，都比PVA (pure) 製膜佳。在200℃乾燥PVA膜的黏著力，比120℃乾燥的PVA膜來的大，經全反射型-傅立葉轉換-紅外線光譜儀 (Attenuated Total Reflection – Fourier Transform Spectrometers, ATR-FTIR) 的分析，發現在高溫下乾燥時，會游離PVA分子中的羥基基團（-OH），並與碳原子建立新的COC鍵，以改善黏著性。

This study investigated the adhesion force and the water vapor permeability (WVP) of a PVA or PVA/BPEI film coated on a nano-porous PTFE membrane. The preparation formula of PVA was optimized to obtain the best adhesion and the maximal permeability of water vapor between PTFE and PVA films. The PVA/BPEI(2/1)-blended mixture with a concentration of 10wt%, dissolved in 85℃ water, and dried at 120 ~180℃ for 10 min was concluded the optimal condition. Its performance in adhesion force and WVP was better than that of pure PVA film. The experimental results also indicated that the PVA film dried at 200℃ possessed an adhesion force higher than that dried at 120℃. Analyzed by the FTIR-ATR, such a drying at a high temperature could dissociate hydroxyl group (-OH) in the PVA molecules and build new C-O-C bonds with carbon atoms to improve the adhesive property.

摘要 I
Abstract II
致謝 III
目錄 IV
表目錄 VIII
圖目錄 IX
第一章 緒論 1
1-1 黏著劑 1
1-1-1 黏著劑的概念 1
1-1-2 黏著劑的種類 3
1-1-3 影響黏著強度之因素 4
1-1-3.1 潤濕 (wetting) 4
1-1-3.2 表面自由能 (Free Energy) 5
1-1-3.3 表面粗糙度(Surface Roughness) 5
1-1-3.4 黏著層厚度(Adhesive Thickness) 6
1-1-3.5 表面預處理(Surface Pre-treatment) 7
1-1-3.6 乾燥環境 7
1-2 剝離檢測介紹 7
1-2-1 剝膜檢測(Peel Test) 7
1-2-2 剝膜理論分析研究 8
1-2-3 剝膜實驗分析研究 9
1-3 薄膜製備方法 12
1-4 透濕性之測試方法 13
1-5 透濕性薄膜應用 14
1-6 全反射型-傅立葉轉換-紅外線光譜儀(Attenuated Total Reflection – Fourier Transform Spectrometers, ATR-FTIR)簡介 16
1-7 PVA簡介 19
1-8 聚乙烯亞胺簡介 21
1-9 研究動機與目的 24
第二章 理論背景 25
2-1 黏著劑膠合理論 25
2-2 黏著劑的性能與構成之關係 26
2-3 撕裂測試(Peel Test)理論 27
2-4 透濕性檢測 29
第三章 實驗藥品與流程 32
3-1 材料 32
3-2 聚乙烯醇物理化學性質 34
3-3 實驗儀器 35
3-4 實驗程序 36
3-4-1 防護塗層薄膜之製備 36
3-4-2 撕裂測試 38
3-4-3 黏著劑塗層布料水氣透濕量實驗 41
3-5 實驗可調控之變因 44
3-5-1 PVA溶液濃度 44
3-5-2 PVA聚合度 44
3-5-3 乾燥環境(溫度、濕度、壓力) 44
3-5-4 FTIR-ATR檢測 45
3-5-5 混入支狀聚乙烯亞胺 45
3-6 實驗數據整理方法 46
3-6-1 撕裂測試數據整理 46
3-6-2 透濕測試數據整理 49
3-6-3 FTIR-ATR測試數據整理 49
第四章 結果與討論 50
4-1 聚乙烯醇(PVA)溶液濃度配製 50
4-2 PVA聚合度對黏著力的影響 52
4-3 乾燥環境對黏著力的影響 53
4-3-1 溫度 54
4-3-2 濕度 55
4-3-3 壓膜壓力 56
4-4 PVA膜的FTIR分析 57
4-5 透濕後PVA膜對黏著力的影響 59
4-6 嘗試混入支狀聚乙烯亞胺(BPEI)後PVA膜對黏著力的影響 61
4-6-1 PVA/BPEI比例混成 61
4-6-2 透濕後PVA/BPEI膜對黏著力的影響 63
第五章 結論 65
第六章 參考文獻 67

 

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