電紡絲技術製備奈米纖維濾材之特性研究

The study of the nanofibrous film produced using electrospinning technology

郭霈宸(Pei-Chen Kuo)

指導教授 ： 林文印

國立臺北科技大學/工程學院/環境工程與管理研究所/碩士(2009年)

https://doi.org/10.6841/NTUT.2009.00178

摘要

電紡絲 (electrospinning) 技術乃利用高電壓所產生的電排斥力，克服高分子聚合溶液的表面張力和黏度，形成液柱往收集載體延伸而製備出奈米級纖維。奈米級纖維因具有較小直徑及較大表面積而具有較廣泛的用途，如過濾材或防護衣等，其應用領域包含環境工程、生物科技、紡織、化工及電子等產業。
本研究設置一電紡絲之奈米纖維製備系統，以聚甲基丙烯酸甲酯 (poly(methyl methacrylate)，PMMA) 為高分子聚合材料，改變操作參數以電紡絲系統製備PMMA纖維濾材；探討不同操作參數所產生之纖維特性，並將電紡絲技術應用在微粒收集之目的上，在不同測試參數下探討纖維濾材之微粒穿透特性。
研究結果顯示，當聚合溶液濃度增加時，除可減少球狀纖維之液滴狀物質外，纖維之直徑也會隨之增加；當本研究在聚合溶液中加入不同容量之氯化鈉時，除可減少球狀纖維外，纖維平均直徑亦可減少；此外，當針頭至收集載體之工作距離增加時，纖維之直徑即會增加。本研究最終將纖維濾材應用於微粒收集之目的上，結果顯示本研究所製備之纖維濾材之微粒收集特性良好，微粒穿透效率最佳可達3.0×10-5。

關鍵字

電紡絲 ； 奈米纖維 ； 聚甲基丙烯酸甲酯

並列摘要

Electrospinning is a simple and cost-effective technique for manufacturing of fibers that diameter in nano-scale. The continuous jet is spun from capillary needle with polymer solution to ground under a high electric field. Nanofibers that were produced using this technique offer the potential for wide variety of applications such as filtration for air or water, tissue engineering scaffolds, protective clothing and biomedical application etc., due to the exceptional properties: high specific surface area, high aspect ratio and small pore size, for instance.
An electrospinning system was set up in this study. The purposes of this study include: (a) the effects of concentration of PMMA solution, sodium chloride volume, feed rate and distance from needle tip to collector (spinning distance) on electrospun nanofiber characteristic, (b) applied to collection of particles under different conditions that were fiber types, face velocity, fiber diameter and surface voltage of nanofibrous films.
PMMA nanofibers were successfully produced by electrospinning technique in this study. Increasing of polymer concentration caused increasing of electrospun fibers diameter and decreasing of beaded fibers count. However, both the beaded fibers count and average fiber diameter could be decreased when sodium chloride was added into PMMA polymer solution.In addition, average diameter of fibers decreased as spinning distance increased. The fiber film was applied to collect particles. The results showed the good penetration in collection of particles. In some specific parameters, the best penetration is about 3.0×10-5.

並列關鍵字

Electrospinning ； nanofiber ； PMMA

參考文獻

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