電漿後處理對類鑽碳膜表面性質及血液相容性之影響

Effect of Post-treatment on the Surface Properites and Blood Compatibility of Diamond-like Carbon Films

林聲旭(Sheng-Hsu Lin)

指導教授 ： 曾信雄 ； 吳錫芩

大同大學/工程學院/材料工程學系所/碩士(2012年)

摘要

本實驗以電漿輔助化學氣相沉積系統沉積類鑽碳膜，觀察氫氣及氬氣電漿在沉積碳膜後轟擊試片表面對碳膜表面特性以及血液相容性的影響。實驗分別以表面輪廓儀量測膜厚，拉曼光譜儀分析碳膜結構，原子力顯微鏡量測碳膜表面粗糙度，水接觸角分析儀量測碳膜表面親疏水特性來觀察碳膜表面特性。血液相容性測試分別以二喹啉甲酸蛋白質分析法（Bicinchoninic acid protein assay，BCA assay）分析碳膜表面白蛋白/纖維蛋白之吸附比，利用掃描式電子顯微鏡觀察血小板於碳膜表面的貼附情況，並以MTT進行細胞相容性測試。
實驗結果顯示，隨著電漿後處理時間的增加，所沉積出來的類鑽碳膜表面粗糙度以及沉積膜厚都會下降。實驗結果也發現，電漿後處理時間越久，碳膜表面的sp2比例，膜表面疏水性，白蛋白以及纖維蛋白的吸附量也都會增加。使用氬氣電漿後處理的碳膜，在後處理時間達十五分鐘時達到最高的白蛋白/纖維蛋白吸附比；使用氫氣電漿後處理的碳膜，在後處理時間一分鐘達到最好的白蛋白/纖維蛋白吸附比。不論類鑽碳膜是否經過電漿後處理，碳膜的毒性反應都很低。經過電漿後處理的類鑽碳膜在浸漬於血小板中180分鐘後，血小板的貼附程度有明顯增加。

關鍵字

表面性質 ； 血液相容性 ； 類鑽碳膜

並列摘要

Diamond-like carbon films were prepared on silicon substrates using radio frequency plasma enhanced chemical vapor deposition. The different post-treatment time from hydrogen plasma and argon plasma were investigated. The film thickness, surface roughness, film hydrophobicity and surface microstructure of DLC films were characterized by Alpha-Step, atomic force microscopy (AFM) , water contact angle and Raman spectroscopy. The protein adhesion, biocompatibility and platelet adhesion were characterized by bicinchoninic acid protein assay (BCA assay) , MTT assay and scanning electron microscope (SEM) .
The results showed that the increase of plasma post-treatment time reduced the suface roughness and film thickness. The results also showed that the longer the plasma post-treatment time, the higher the sp2 content, surface hydrophobic, and the absorption of albumin and fibrinogen. For the argon plasma post-treatment, adsorption ratio of albumin to fibrinogen reached the highest value at fifteen minutes. For the hydrogen plasma post-treatment, adsorption ratio of albumin to fibrinogen reached the highest value at one minute. cytotoxicity tests showed low cytotoxicity for DLC films with or without plasma post-treatment. DLC films with plasma post-treatment showed significant increase in platelet attatchment when platelet was incubated for 180 minutes.

並列關鍵字

hemocompatibility ； Diamond-like carbon ； surface peoperties

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