Three different low-temperature plasma-based methods for hydrophilicity improvement of polyethylene films at atmospheric pressure |
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| Institution: | Chen Guang-Liang, Zheng Xu, Huang Jun, Si Xiao-Lei, Chen Zhi-Li, Xue Fei, Sylvain Masseyb( a) Key Laboratory of Advanced Textile Materials and Manufacturing Technology, and Engineering Research Center for Eco-Dyeing ＆ Finishing of Textiles, Ministry of Education, Zhejiang Sci-Tech University, Hangzhou 310018, China b)Groupe en Sciences des Radiations, Faculté de médecine et des Sciences de la Santé, Université de Sherbrooke, Sherbrooke, Québec QC JIH 5N4, Canada) |
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| Abstract: | Three different low-temperature plasma-based methods were used to improve the surface hydrophilicity of polyethylene(PE)films,and all the modification processes were carried out by employing an atmospheric pressure plasma jet(APPJ)system.(a)PE films were directly modified by APPJ using a gas mixture of He and O2.(b)Acrylic acid(AA)was introduced into the system and a polymer acrylic acid(PAA)coating was deposited onto the PE films.(c)AA was grafted onto the PE surface activated by plasma pre-treatment.It was found that the hydrophilicity of the PE films was significantly improved for all the three methods.However,the samples modified by Process(a)showed hydrophobicity recovery after a storage time of 20 days while no significant change was found in samples modified by Process(b)and Process(c).The Fourier transform infrared spectroscopy(FTIR)results indicated that the most intensive C=O peak was detected on the PE surface modified by Process(c).According to the X-ray photoelectron spectroscopy(XPS)analysis,the ratios of oxygen-containing polar groups for samples modified by Process(b)and Process(c)were higher than that modified by Process(a). |
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| Keywords: | atmospheric pressure plasma jet plasma modification acrylic acid hydrophilicity improvement |
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