The surface of two kind of crop stalks(corn and sorghum stalk) was modified by cold plasma to improve surface bonding performance of stalks. The effect of cold plasma treatment on stalks' surface wettability was analyzed by using contact angle tester, and the surface topography and chemical composition variation of the treated stalks were studied by SEM-EDAX and FT-IR. The results showed that after treatment by cold plasma, the surface of crop stalks can be etched, and the weak boundary layer can be removed. The crop stalks' surface were covered with a large number of active functional groups,...
