多功能含銀之聚丙烯腈與氧化鋅之靜電紡絲奈米纖維:多形態氧化鋅在光觸媒、紫外光遮蔽以及抗菌應用探討

在科技與工業發展迅速的時代，環境汙染隨之而來，就連重要的水資源，也遭受波擊，過去處理汙水時，不僅需要長時間的曝氣與專門的區域進行，這對於地狹人稠的台灣真的相當具有挑戰。本篇構想是冀望從製程與應用著手(其中包括材料、時間、能源及3R(Reduce, Reuse, Recycle)，並運用靜電紡絲技術及回流系統，製作出多型態氧化鋅結晶含銀之奈米纖維，其能在短時間有效的降解汙染物。本研究藉由參數調整使氧化鋅結晶形態進行轉換，由SEM證實，包含花、石頭、松果、海膽型；XRD證實其型態變化皆為氧化鋅與銀之結晶。在UV-vis光譜儀測試中，發現當呈現海膽型時，由於其具有高比表面積，因此能快速的在5分鐘內，即有降解趨勢的出現，且在30分鐘內能有效降解89.8%之汙染物，遠遠高出其餘型態(粉末型態之降解約33.2%)；另外為增加其運用性之探討，也使用TGA、萬能拉伸儀、定量試驗進行包含強度、耐熱、抗菌、紫外線遮蔽等測試，發現效果相當顯著(最大抗拉強度：0.969kgf；耐熱溫度：720℃；抗菌活性圈：5.5cm；抑菌活性值：5.6；殺菌活性值：3.3；紫外線遮蔽值：99.79%)。因此本篇之新穎多形態氧化鋅不織布薄膜，不但具備快速分解污染之效能，更因其擁有抗菌與紫外線遮蔽之功用，將來更可做成持久型抗菌耐用去汙染新穎環保多功能不織布薄膜，並廣泛運用於多種領域當中。

關鍵字

靜電紡絲；奈米纖維；氧化鋅結晶形態；光觸媒；抗菌；紫外線遮蔽

並列摘要

In this study, we firstly prepared polyacrylonitrile (PAN)-ZnO/Ag composite ES fiber membranes consisting of pineal-type, flower-type, and sea-urchin-type ZnO morphologies by using ES technique, hydrothermal synthesis, and Ag reduction. The effects of the various ZnO structures on the fiber morphologies, photocatalytic efficiency, UV protection, and mechanical properties as well as how the additive Ag enhanced antimicrobial activity. Our results indicated that the photocatalytic and UV-protection efficiency of PAN-ZnO/Ag ES fiber membranes can be altered by varying the morphology of ZnO. The various ZnO architectures exhibited differences in photocatalytic activity and UV-shielding efficiency, and were ranked as follows: sea-urchin > flower- > pineal-type. Sea-urchin-type ZnO features higher surface-to-volume ratio than other architectures do because of its distinctive structure, thus yielding higher performance. The present study demonstrated that self-standing PAN-ZnO/Ag composite fiber membranes, especially those with the sea-urchin-type ZnO structure, can be applied in multifunctional textiles such as water purification filters and antibacterial and UV-shielding clothes.

並列關鍵字

Electrospun ； Nanofiber ； Zinc oxide crystal morphology ； Photocatalyst ； Antibacterial ； UV shielding

參考文獻

41. 蔡宜壽, 奈米技術在纖維抗菌、防臭上的應用. 逢甲大學奈米科技研究中心.

24. 蔡忠育, 蘇., Department of Materials Engineering Tatung University. National Taipei University of Technology 2009, 1-105.

5. 林坤賢, 黃., 王盈淇,徐嘉鴻,王紀, 以電紡絲製備奈米纖維. 化工期刊 2005, 52 (5), 23-39.

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多功能含銀之聚丙烯腈與氧化鋅之靜電紡絲奈米纖維:多形態氧化鋅在光觸媒、紫外光遮蔽以及抗菌應用探討

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