以電漿處理聚四乙烯表面改質之研究

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题名:	以電漿處理聚四乙烯表面改質之研究
作者:	彭志剛;Zh-Gang Peng
贡献者:	化學工程與材料工程研究所
关键词:	雙馬來醯亞胺;聚四氟乙烯;電漿;plasma;BMI;PTFE
日期:	2001-07-11
上传时间:	2009-09-21 12:19:43 (UTC+8)
出版者:	國立中央大學圖書館
摘要:	本研究是以氨氣、氮氣等氣體無線電波電漿對聚四氟乙烯（PTFE）樹脂進行表面處理，之後在經由雙馬來醯亞胺（BMI）單體行接枝聚合反應，以探討PTFE及BMI樹脂介面黏著性質。處理之後的PTFE表面形態、化學組成及官能基可以SEM、FTIR-ATR、及ESCA加以分析。由ESCA的結果顯示，在短時間電漿處理下即有明顯的去氟效應及氮元素的形成；且在相同的氣體電漿處理條件下，氨氣（NH3）電漿會有較強的蝕刻效應，又兩個不同氣體的電漿處理其表面氮元素的鍵結方式亦不同。在接觸角的測試中，發現短暫的電漿處理即可使PTFE表面能增加，潤濕性變好。之後的BMI單體接枝反應，會隨著處理條件的不同接枝效果亦會受影響。PTFE與BMI間的黏著性質可由lap shear strength測試中知道，當經過電漿處理之PTFE，其lap shear strength會有明顯的增加。 Surface modifications of poly(tetrafluoroethylene) (PTFE) films by radio-frequency gas (ammonia, nitrogen)plasma treatment as well as by graft copolymerization of the plasma-pretreated films with bismaleimide(BMI) has been carried out. After these treatments, the changes in the film topography, chemical compositions of the PTFE films surface, and the surface functional groups introduced to the surface of PTFE films were identified by SEM, FTIR-ATR, and ESCA. ESCA results shows that mild plasma treatment is sufficient to cause substantial surface defluorination and introduction of nitrogen containing group. Under similar experimental conditions, the NH3 plasma strongly etches onto PTFE surface. And it shows that nitrogen chemical bonding form is different with different gas plasma treatment. Contact angle measurements reveal that the surface energy of the PTFE film is considerably enhanced by the surface mild gas plasma treatment. The concentration of the surface-grafted BMI polymer increases with the plasma pretreatment condition. The lap shear strength between the PTFE film and BMI resin was remarkably improved by gas plasma treatment.
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