Surface XPS-investigations of tobacco leaves treated with low-temperature plasma

Surface XPS-investigations of tobacco leaves treated with low-temperature plasma 1 first-author 2 corresp Corresponding author, e-mail: hhuang@ustc.edu.cn Corresponding author, e-mail: hhuang@ustc.edu.cn hhuang@ustc.edu.cn 3 2 4 4 4 Department of Chemistry and Materials Engineering, Hefei College, Hefei 230026, China; Department of Chemistry and Materials Engineering, Hefei College, Hefei 230026, China; University of Science and Technology of China, Hefei 230026, China; University of Science and Technology of China, Hefei 230026, China; Department of Science and Technology, Anhui Tobacco Company, Hefei 230022, China; Department of Science and Technology, Anhui Tobacco Company, Hefei 230022, China; Hefei Cigarette Factory, Hefei 230000, China Hefei Cigarette Factory, Hefei 230000, China The tobacco leaves were treated with low-temperature plasma in Ar, N 2 , O 2, and air atmospheres at different powers (60―130 W). The surface-elemental components, their relative contents, and the functional groups of the surface components of the tobacco leaves were determined using XPS (X-ray photoelectron spectroscopy). The experimental results showed that the percentage of the elements C, N, and O had changed considerably and a large number of polar functional groups containing oxygen atoms were incorporated into the components on the tobacco surfaces. The measurements of the surface contact angle showed that the surface contact angle of the modified tobacco leaves was 0 degree, whereas it was 110 degrees before the plasma treatment. These results indicate that the wettability of the modified tobacco leaves improved dramatically. This work may be significant for future researches on the surface modification of the tobacco leaves. Low temperature plasma Surface modification XPS Contact angle References Wesson S. P . Polym Mater Sci , 1988 , 58 : 650 - 654 . Polym Mater Sci Liu Naiyun , Zhang Caiyun , Zhang Wei . J. Tobacco Science and Technology (in Chinese) , 2002 , ( 1 ): 18 - 20 . J. Tobacco Science and Technology (in Chinese) Han Bin , Cai Lipin . J. Tobacco Science and Technology (in Chinese) , 2004 , ( 2 ): 17 - 19 J. Tobacco Science and Technology (in Chinese) Jones C . Carbon , 1990 , 28 ( 4 ): 509 - 514 . Carbon Proctor A , Sherwood P M A . Anal and Chem , 1982 , 54 : 13 . Anal and Chem 10.1016/S1001-8042(06)60039-0 O539,TH838. + 3,S572 Supported by Research Fund of Monopoly Administration of Tobacco of China (No. 110200201016) 2005-04-04 2006-08-20 2021-01-19 2006 Nuclear Science and Techniques 04 17