本實驗分成兩部份，一為多孔聚胺酯薄膜之透濕度的研究。二為多壁奈米碳管/聚胺酯多孔薄膜之強度的研究。第一部份是討論藉由氯化鋰的添加可以改善聚胺酯薄膜的孔洞結構並增進其透溼度。氯化鋰添加到聚胺酯增進孔洞結構並以透溼度測試確實提升來證明。進一步將透溼度測試與比表面積分析來做比較，可以發現透溼度與孔洞的體積及孔洞大小相關。
在第二部份中，我們專注於奈米碳管/聚胺酯的機械性質分析，由於聚胺酯屬於高分子，強度並不高，我們利用奈米碳管可做為加強材的特性，將碳管添加到聚胺酯中。此實驗所生成的奈米碳管/聚胺酯多孔薄膜，藉由拉伸試驗得到抗拉強度有確實增強的數據，然而添加到一定比例的碳管，強度就不再增強，且超過臨界比例的碳管也會降低複合材的透濕能力。

This thesis is divided into two parts. The 1st discusses the porosity improvement of polyurethane (PU) films and water vapor permeability (WVP) by LiCl addition. Addition of LiCl to PU improves the porous structure and is evident by WVP tests. We compare results of the WVP and the BET analyses and find that WVP is related to size and volume of pores.
The 2nd part focuses on mechanical property of carbon nanotubes/polyurethane (CNTs/PU) films. Carbon nanotubes (CNTs) act as reinforcing elements and enhance strength of porous PU. Excess of CNTs in PU reduces PU strength and also WVP.

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