JOURNAL OF NANJING FORESTRY UNIVERSITY ›› 2014, Vol. 38 ›› Issue (05): 29-35.doi: 10.3969/j.issn.1000-2006.2014.05.007

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Influence of dielectric barrier discharge plasma treatment on wettability of wheat straw

LI Yang, YANG Xuehui, LU Kaiyue, ZHOU Xiaoyan*   

  1. College of Material Science and Engineering,Nanjing Forestry University, Nanjing 210037, China
  • Online:2014-10-31 Published:2014-10-31

Abstract: The surface of wheat straw was treated by dielectric barrier discharge(DBD)plasma. The influence of discharge voltage, electrode space and treatment time on the wettability of wheat straw was investigated. The results showed that lower contact angle and higher surface free energy of the samples were achieved after being treated by DBD plasma, which means the wettability of wheat straw was improved, especially for exterior surface of wheat straw. In addition,along with the increase of discharge voltage, the decrease of the electrode space and the extension of treatment time, the contact angle of wheat straw showed the tendency of decreasing at first and then increasing, and the surface free energy showed the opposite tendency. The optimal treatment condition was: discharge voltage 30 V, treatment time 60 s, electrode space 6 mm.

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