本研究係利用靜電紡絲技術製備具有纖維結構之聚氨基甲酸酯（Polyurethane, PU）薄膜。第一階段利用各種不同操作條件包括PU溶液濃度、操作電壓、紡絲距離，尋找最佳操作參數，結果得知高分子溶液20 wt％，操作電壓25 kV，紡絲距離12cm為最佳條件，所製得纖維薄膜之纖維平均直徑約在0.952μm。第二階段實驗在PU高分子溶液中添加不同比例（1, 3, 5, 7 wt％）之奈米氧化鋅粉體，利用最佳條件製得不同奈米ZnO粉體含量之PU/ ZnO纖維複合薄膜，以SEM觀察纖維平均細度約在0.952μm~1.241μm。以EDS對PU/ZnO纖維膜做元素分析，圖譜中出現Zn的元素特徵峰。以FTIR對PU/ZnO纖維膜做表面特徵官能基分析，發現添加ZnO並未出現新的官能基特性峰或是造成偏移現象，代表本研究屬於物理混掺。DSC與TGA熱性質分析結果，隨著ZnO粉體添加量的提升，熱裂解溫度也隨之降低。微相分離分析之結果顯示，添加ZnO粉體會使PU/ZnO纖維薄膜之微相分離下降。並且對PU/ZnO纖維膜做拉伸強度機械性質分析，發現隨著ZnO添加量的提高，使纖維薄膜由軟而韌之特性轉為硬而脆。抗UV測試結果證明出ZnO粉體確實能吸收UV光，當添加氧化鋅粉體後，PU/ZnO纖維薄膜在波長280nm至365nm之波段有明顯UV光的吸收，並且隨著添加量越多而吸收越多。對金黃色葡萄球菌之抑菌能力測試結果發現添加7wt％ZnO粉體，對金黃色葡萄球菌的抑菌效果達到82.9%。

In this study, electro spinning was applied to produce PU/ZnO fibrous membrane. The polymer fibrous membrane is affected by operating parameters while electro spinning. Obtain better quality of PU fibrous products were obtained, the first step of the research was to determine the optimum conditions of process. It showed that the PU fibrous of average diameter 0.952μm could be produced with conditions as 20 wt％ polymer solution concentration, 25 kV operating voltage and 12cm capillary-screen distance. The second step of this experiment was to add ZnO powders into PU polymer solution to produce PU/ZnO composite fibrous membrane. The SEM was applied to investigate the morphology of fibrous membranes and the results showed that its average diameters were in the range of 0.952μm~1.241μm, The EDS results showed the featuring peak of Zn. In addition, from the data of FTIR, it could be concluded that neither new groups were made nor phenomenon of displacement was happened. The thermal properties were analyzed by DSC and TGA. The crystalline of PU polymer decreased once ZnO was added which was taken account of the low thermal collapse temperature. The mechanical properties of PU/ZnO fibrous membrane were investigated by Tensile Test. The experimental results showed that the mechanical properties were turned from the soft and tough of membrane into hard and brittle membrane with the increasing of ZnO concentration. The UV cut effect of PU/ZnO fibrous membrane observed once ZnO was added and increased with the increasing of ZnO concentration. The characteristic of inhibition of bacteria growth of PU fibrous membrane would be achieved by adding ZnO. From the experimental results, it showed that PU fibrous membrane containing7wt％ ZnO could inhibit the growth of staphylococcus.

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