標題: An Optimized Two-Step Nitrogen-Based Plasma Treatment Procedure under Atmospheric-Pressure Condition and its Surface Amination Mechanism
作者: Yang, Yi-Wei
Wu, Jane-Yii
Liu, Chih-Tung
Liao, Guo-Chun
Cheng, Kuang-Yao
Chiang, Ming-Hung
Wu, Jong-Shinn
機械工程學系
Department of Mechanical Engineering
關鍵字: amide;amine;atmospheric-pressure plasma;biomedical;biomaterial;carbamate;DBD;nitrogen-containing group;PLA
公開日期: 1-Jul-2015
摘要: Atmospheric pressure nitrogen-based dielectric barrier discharge (DBD) jet with two-step plasma treatment procedure has been verified to be very effective in facilitating nitrogen-containing group incorporation on Polylactide (PLA) surface. It includes: 1) pretreatment plasma treatment by a nitrogen discharge with a trace amount of oxygen, and 2) ammonia plasma treatment by a nitrogen discharge with a small amount of ammonia. In this study, the optimized operation condition of two-step plasma procedure is investigated under different concentrations of added gases (0-1% oxygen; 0-10% ammonia). XPS analysis shows that approximate to 0.19 of N/C ratio can be achieved by means of the optimized two-step plasma procedures. Furthermore, a surface amination mechanism is proposed based on the observations of Optical Emission Spectra (OES), Atomic Force Microscope (AFM), and X-ray Photoelectron Spectra (XPS) analyses.
URI: http://dx.doi.org/10.1002/ppap.201400095
http://hdl.handle.net/11536/128063
ISSN: 1612-8850
DOI: 10.1002/ppap.201400095
期刊: PLASMA PROCESSES AND POLYMERS
Volume: 12
起始頁: 678
結束頁: 690
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