- 學位論文
以田口實驗設計法製備PVA/CC/Ag複合纖維膜與其功能性分析研究
A Study on Fabrication and Functional Properties of PVA/ Coir Charcoal / Nano-Ag Nanocomposite Fibrous Membrane by Taguchi Method
摘要
本研究主要係利用功能性17.7 nm奈米銀微粒(Nano-Ag)與功能性332.9 nm椰碳粉體(Coir Charcoal, CC)摻混於聚乙烯醇(PVA)中，並使用靜電紡絲技術製備出含多孔性與複合功能性之纖維膜，因田口實驗設計法之高再現性、高品質、高穩定度與高精準度並且擁有低實驗成本，方選用田口實驗設計法來設計實驗參數並製造出含多孔性與複合功能性之纖維膜的最佳參數。 本研究之實驗（I）、（II）係是分別藉由濕式分散技術製備椰碳粉體，以及使用化學合成法製備奈米銀微粒，並藉由粒徑分析、UV-Vis分析及TEM表觀分析，選擇預使用之補強材，使其能有消臭、分解污染物質與抗菌性等多重功能性。 本研究之實驗（III）係利用田口實驗法設計實驗參數，製備含有不同添加比例之PVA/CC/Ag之複合纖維薄膜，並對此複合纖維薄膜進行檢測，觀察其化學性質及熱性質。並針對功能性測試(IV)，分別對其蓄熱保溫、抗菌性及亞甲基藍吸附特性作田口實驗法分析，藉以找出PVA/CC/Ag之複合纖維薄膜之最佳參數。 根據田口實驗法分析結果，選擇椰碳濃度5%、奈米銀濃度0.5%、操作電壓20kV及紡絲距離15cm，作最後確認實驗並分析亞甲基藍吸附、熱影像試驗與抗菌實驗之功能性，並探討其熱性質。 於結構分析中，以傅立葉紅外光譜儀（ATR-FTIR）檢測其化學結構，發現並無其他特徵峰出現，且特徵峰值亦無任何偏移現象。由掃描式電子顯微鏡（SEM）觀察含椰碳之PVA複合纖維薄膜表面型態之分散狀況，並以能量分散光譜儀（EDS）對其進行元素分析，顯示出少量銀元素之存在。 根據亞甲基藍吸附結果，發現Optimum之吸附能力可達63.76%；於蓄熱保溫性能分析中，Optimum之溫差為30.31℃，比純PVA之溫差21.17℃要高，具有較佳之蓄熱保溫性能；於抗菌性能測試中發現，Optimum之抑菌性可達到99%以上；DSC與TGA熱性質分析結果，發現就整體而言，有提高其熱穩定性。
並列摘要
In this study, polyvinyl alcohol (PVA) fibrous membranes with porosity and multi-functions containing nano-silver particles (17.7nm) and coir charcoal powders (332.9nm) was fabricated by electrospinning. The Taguchi method was applied to obtain design parameters for high reproducibility, high quality, high stability, high accuracy, lower processing time and lower cost. In this study, the Experiment is divided into four stages. The first stage, Wet Grinding was applied to obtain coir charcoal powders; the second stage, nano-silver particles was fabricated by Chemical Synthesis Method. These Reinforcements was chosen by granularmetric analysis, UV-Vis spectra analysis, and Transmission Electron Microscopy (TEM). The third stage and the last stage, Taguchi method was applied to design parameters. The PVA/ Coir Charcoal / Nano-Ag Nanocomposite Fibrous Membrane were fabricated by electrospinning. At the same time membrane were surveyed by ATR-FTIR and DSC. Then, functional tests, such as warm test, anti-bacteria test, and Methylene Blue capacity test, was used to obtain the best parameters According to the result of Taguchi Method, the best parameters are that coir charcoals content is 5%, nano-Ag content is 0.5%, operating voltage is 20kV, eletrospinning distance is 15cm. The confirming final experiments were verified by warm test, anti-bacteria test, and Methylene Blue capacity test. The chemical structures of these fibrous membranes were investigated by FT-IR. The surface analysis was observed by SEM. The results of EDS showed the existence of C、O and Ag elements. In terms of Methylene Blue absorption, the Methylene Blue capacity of Optimum membranes is 63.76%. For the warm function, the temperature difference of Optimum membranes is 30.31℃, which is higher than Pure PVA membranes, 21.17℃. As for the effect of antibacterial, the inhibition rate is more than 99%. The thermal properties were analyzed by DSC and TGA which showed the thermal stability is advanced.