Effect of Ethyl Alcohols on Plasma Treatment of UHMWPE Fibers
Unlike low pressure plasmas, atmospheric pressure plasmas can treat materials with adsorbed liquids such as organic solvents used as cleaning agents and cross-linking agents. These solvents may interact with the plasmas to influence the treatment results. This paper studies the ethyl alcohols influence on the atmospheric pressure plasma jet (APPJ) treatment of ultrahigh molecular weight polyethylene (UHMWPE) fibers with pure helium or helium with 1％ oxygen as treatment gas. Ethanol, ethylene glycol and glycerol with small molecule weight were used to pretreat fibers. All the fibers have 0.3％-0.9％ weight gain after soaking in those solvents separately. Scanning electron microscopy (SEM) shows that the surface of fiber soaked in ethanol for 12 h does not show any morphological change from control group. But there are some micro-splits on the fiber surface which were pretreated by 0.15 mol/1 ethylene glycol or 0.2 mol/1 glycerol solutions for 24 h followed by plasma treatment. X-ray photoelectron spectroscopy (XPS) shows a small increase of oxygen content on the surface of ethyl alcohols pretreated UHMWPE fibers. And the increase of glycerol is larger than the other two. Micro-bond test shows that the interfacial shear strength values (IFSS) of the fibers to epoxy with ethyl alcohols pretreatment are smaller than that of the plasma directly treated fibers. Among them, the IFSS of fibers dropped most significantly with ethanol pretreatment. It is likely that ethyl alcohols absorbed into the fiber reacts with the plasma, and forming a weakly bonded layer of polymers that reduced plasma etching and IFSS. And the etching effect could be recovered by the extension of plasma treatment time and increase of molecular weight of ethyl alcohols.
Atmospheric pressure plasma treatment ethanol ethylene glycol glycol glycerol UHMWPE fiber SEM IFSS XPS
Ranxing Li Fang Cai Ying Wen Kun Fu Yuyan Hong Liang Ge Shujing Peng Chunxia Wang Yiping Qiu
Key Laboratory of Textile Science and Technology (Donghua University), Ministry of Education, China Key Laboratory of Textile Science and echnology (Donghua University), Ministry of Education, China D Key Laboratory of Textile Science and Technology (Donghua University), Ministry of Education, China
国际会议
上海
英文
1363-1366
2009-05-27（万方平台首次上网日期，不代表论文的发表时间）