謝國煌臺灣大學:高分子科學與工程學研究所林嘉彥Lin, Chia-YenChia-YenLin2010-05-122018-06-292010-05-122018-06-292009U0001-1408200914584900http://ntur.lib.ntu.edu.tw//handle/246246/183158此論文主要探討聚胺酯薄膜的合成,物性,應用,及如何利用溫度的改變控制其透水蒸氣性。此論文中,我們在控制其它變數的情況下,一一改變了: 硬鍵含量,親水軟鍵含量,以及異氰酸酯數,並觀察與其相對應的機械性質改變,熱性質改變,切面表面形態改變,及透水蒸氣性質的改變。另外,我們在親水軟鍵含量,異氰酸酯數的這兩組實驗中,找到合理的數據支持聚胺酯薄膜的透水蒸氣性和溫度的關係符合阿瑞尼士方程式,而可藉此方程式預測在某一溫度下的透水蒸氣性,以達到用溫度準確控制聚胺酯薄膜透水蒸氣性能的目的。然而,在此論文發現聚胺酯薄膜在玻璃轉化溫度區間,透水蒸氣性質增加了3200 %,從實驗數據及原子力顯微鏡(AFM)中,我們得知聚胺酯薄膜軟區(Soft Domain)中的聚氧乙烯二醇(PEG)扮演最主要也最關鍵的水蒸氣輸送角色。The study is about hydrophilic polyurethane film and its properties and applications, and how its water vapor permeability can be controlled via temperature. We varied polyurethane formulations of hard segment concentration, hydrophilic segment concentration, and isocyanate index to see how these variables affect mechanical properties, thermal properties, morphology, and water vapor permeability of the hydrophilic polyurethane film. Also, water vapor permeability at different temperature is found to be temperature dependent following Arrhenius equation. However, the water vapor permeability near glass transition temperature exhibited very different behavior and does not follow the Arrhenius equation. An abrupt 3200 % water permeability increase is observed at the glass transition temperature region. And from the experiment data and AFM (Atomic Force Microscope) we found that polyethylene glycol (PEG) of soft domain plays a critical role in water vapor permeability.Chapter 1: Introduction 1.1 Background of Developing Water Vapor Permeable Film 1.2 Microporous Membranes for Water Vapor Permeable Application 3.3 Hydrophilic Monolithic Film for Water Permeable Application 5.4 Water Vapor Permeability: Fractional Free Volume 6.4.1 Effect of Hard Segment Content on Fractional Free Volume 10.4.2 Effect of Soft Segments on Fractional Free Volume 11.4.3 Effect of Molecular Weight on Fractional Free Volume 12.4.4 Effect of Temperature on Fractional Free Volume 12.5 Free Volume Theory Applied on Water Vapor Permeability 14.6 Water Vapor Permeability of Hydrophilic Film: Hydrophilicity 16.7 Considering Both the Free Volume and Hydrophilicity 20hapter 2: Experiment and Equipment 22.1 Material 22.2 Synthesis Hydrophilic Polyurethane Film with DMF 24.3 Equipment and Testing Methods 27hapter 3: Synthesizing and Analyzing Hydrophilic Polyurethane Film with Different Hard Segment Concentration 32.1 Abstract 32.2 Introduction 33.3 Calculation and Synthesizing Hydrophilic Polyurethane Film with Various Hard Segment Concentrations 33.4 Mechanical Properties 35.5 Thermal Properties 37.6 Morphology 40.7 Water Vapor Permeability 42.8 Conclusions 44hapter 4: Synthesizing and Analyzing Hydrophilic Polyurethane Film with Different Hydrophilic Soft Segment Concentration 47.1 Abstract 47.2 Introduction 48.3 Calculation and Synthesizing Hydrophilic Polyurethane Film with Different Hydrophilic Soft Segment Concentration 48.4 Mechanical Properties 50.5 Thermal Properties 53.6 Morphology 55.7 Water Vapor Permeability 57.8 Conclusions 59hapter 5: Synthesizing and Analyzing Hydrophilic Polyurethane Film with Different Isocyanate Index 61.1 Abstract: 61.2 Introduction 62.3 Calculation and Synthesizing Hydrophilic Polyurethane Film with Different Isocyanate Index 62.4 Mechanical Properties 63.5 Thermal Properties 66.6 Morphology 68.7 Water Vapor Permeability 70.8 Conclusions 72hapter 6: The Water Vapor Transport Mechanism of Hydrophilic Polyurethane Film 75.1 Abstract 75.2 Introduction 75.3 The Hydrophilicity Effect on Water Vapor Permeability 76.4 The Crosslink Effect on Water Vapor Permeability 81.5 Conclusion 84hapter 7: Arrhenius Relation of Water Vapor Permeability versus Temperature above Tg and the Water Vapor Permeability at near-Tg-region 85.1 Abstract 85.2 Introduction 86.3 The Arrhenius Relation of WVP versus Temperature of Different PEG Weights in Polyurethane Film 87.4 The Arrhenius Relation of WVP versus Temperature of Different Isocyanate Index in Polyurethane Film 90.5 The Water Vapor Permeability near Tg of PU6 PEG 100% of Soft Segment of Polyurethane Film 93.6 The Water Vapor Permeability near Tg of PU 9 of Isocyanate Index 1.2 (PEG 60% and PBA 40% of Soft Segment) 97.7 Conclusion 99eferences 101application/pdf1885926 bytesapplication/pdfen-US聚胺酯薄膜硬鍵親水軟鍵異氰酸酯數玻璃轉化溫度hydrophilic polyurethane filmhard segmenthydrophilic segmentwater vapor permeabilityglass transition temperaturethesishttp://ntur.lib.ntu.edu.tw/bitstream/246246/183158/1/ntu-98-D91549005-1.pdf