Natural cellulose was treated by an atmospheric DBD plasma.The solubility of cel- lulose in a diluted alkaline solution after the plasma treatment was investigated.The properties were characterized by X-ray photoelectron spectroscopy(XPS),Fourier-transform infrared spec- troscopy(FTIR)and scanning electron microscopy(SEM).The results indicated that the surface of cellulose treated by the argon DBD plasma was significantly etched,and the relevant force of hy- drogen bonding was decreased.This might be the essential reason for the solubility improvement of natural cellulose in the diluted alkaline solution.Through a comparison of two discharge modes, the atmospheric DBD plasma gun and the parallel plate capacitively coupled DBD plasma,it was found that the atmospheric DBD plasma gun was more effective in fragmentizing the cellulose due to its production of a high energy plasma based on its special structure.
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