使用丙酮/丙二醇甲基醚乙酸酯共溶劑進行靜電紡絲製作聚甲基丙烯酸乙酯纖維

Use of acetone/PGMEA co-solvent for electrospinning poly(ethyl methacrylate) fibers

鄭姿瑜(Tsu-Yu Cheng)

指導教授 ： 張朝欽

淡江大學/工學院/化學工程與材料工程學系碩士班/碩士(2023年)

https://doi.org/10.6846/TKU.2023.00036

摘要

靜電紡絲使用的溶劑為氯仿、三氟乙酸(TFA)、四氫呋喃(THF)和六氟異丙醇(HFIP)居多，他們可以良好的溶解高分子以及擁有較低的沸點。近年來環保意識興起，歐盟及台灣都開始制定相關法規來規範對於身體或環境有害的溶劑，因此選擇低毒性的溶劑來取代有毒性的溶劑。
此研究選擇丙酮以及丙二醇甲基醚乙酸酯(PGMEA)共溶劑溶解聚甲基丙烯酸乙酯(PEMA)，在不同比例下改變電紡條件和觀察纖維直徑及纖維膜的性質，透過SEM去觀察紡出的纖維直徑在0.9~2.6μm，當電壓、工作距離提高和使用針徑較粗的不鏽鋼針頭時纖維直徑有明顯下降；更改流速以及收集板對於纖維直徑的影響不大；TGA和DSC測量結果是電紡纖維膜的裂解溫度和Tg皆比純PEMA粉末低；拉伸測試可以知道影響抗拉強度的原因是纖維內部的排列以及纖維的方向性，當纖維的排列與拉伸方向平行，所測得的抗拉強度為8.8 MPa，透過ATR觀察到PEMA纖維膜沒有溶劑殘留；之後將纖維膜分在100°C的烘箱及水蒸氣接觸下觀察纖維型態，發現對纖維並沒有影響，顯示其在不同環境下應用的潛力。

關鍵字

靜電紡絲 ； 聚甲基丙烯酸乙酯 ； 丙酮 ； 丙二醇甲基醚乙酸酯 ； 共溶劑

並列摘要

Most of the solvents used in electrospinning are chloroform, trifluoroacetic acid (TFA), tetrahydrofuran (THF) and hexafluoroisopropanol (HFIP),which can dissolve polymers well and have a low boiling point. In recent years, with the rise of environmental protection awareness, the European Union and Taiwan have begun to formulate relevant regulations to regulate solvents that are harmful to the body or the environment. Therefore, low-toxicity solvents are selected to replace toxic solvents.
In this study, acetone and propylene glycol methyl ether acetate (PGMEA) co-solvents were used to dissolve polyethyl methacrylate (PEMA), and the electrospinning conditions were changed at different ratios to observe the fiber diameter and the properties of the fiber film, which were observed through SEM. The diameter of the electrospun fiber is 0.9~2.6μm. When the voltage, the working distance is increased and the stainless steel needle with a thicker needle diameter is used, the fiber diameter decreases significantly. The impact of changing flow rate and collection plate on fiber diameter is minimal. The TGA and DSC measurement results show that the degradation temperature and Tg of the electrospun PEMA film are lower than pure PEMA powder. The tensile test results indicate that the internal arrangement and directional orientation of fibers affect the tensile strength, with a strength of 8.8 MPa when fibers are aligned parallel to the tensile direction. The ATR analysis reveals no solvent residue in the PEMA fiber film. The fiber film was exposed to 100°C oven and water vapor, and it was found that the fiber structure was not affected, demonstrating its potential for use in various fields.

並列關鍵字

electrospinning ； poly(ethyl methacrylate) ； acetone ； propylene glycol methyl ether acetate ； co-solvent

參考文獻

[1]Cooley, J. F. (1902). U.S. Patent No. 692,631. Washington, DC: U.S. Patent and Trademark Office.

[2]Morton, W. J. (1902). U.S. Patent No. 705,691. Washington, DC: U.S. Patent and Trademark Office.

[3]Anton, F. (1934). U.S. Patent No. 1,975,504. Washington, DC: U.S. Patent and Trademark Office.

[4]Anton, F. (1939). U.S. Patent No. 2,160,962. Washington, DC: U.S. Patent and Trademark Office.

[5]Bailey, A. G. (1984). Electrostatic spraying of liquids. Physics Bulletin, 35(4), 146.