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首页> 外文期刊>Journal of Applied Polymer Science >SURFACE PROPERTIES AND THE STABILITY OF POLY(ETHYLENE TEREPHTHALATE) FILMS TREATED IN PLASMAS OF HELIUM-OXYGEN MIXTURES
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SURFACE PROPERTIES AND THE STABILITY OF POLY(ETHYLENE TEREPHTHALATE) FILMS TREATED IN PLASMAS OF HELIUM-OXYGEN MIXTURES

机译：氦氧混合物等离子体处理的聚对苯二甲酸乙二酯薄膜的表面性质和稳定性

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摘要

In this work, the surface treatment of poly(ethylene terephtalate) (PET) films in a low frequency(70 kHz) discharge in helium-oxygen mixtures is investigated. Optical emission spectroscopy and mass spectrometry are used to analyze the gas phase. Surface properties are analyzed via the X-ray photoelectron spectroscopy (XPS) technique and contact angle measurements. The treatment conditions are optimized in order to obtain a surface functionalization, which would show a reduced ageing effect. The stability of the treated surface via the crosslinking process seems to be closely correlated to the presence of the helium metastable species in the discharge. A very good stability with the ageing time is obtained for samples treated in gaseous mixtures that contain less than 5% O-2, conditions for which the oxidized polymeric structure seems to be formed on a reinforced crosslinked layer. The very efficient loss of He excited species, for amounts of O-2 higher than a few percent, affects the surface crosslinking. For high quantities of oxygen introduced in the reactor (more than about 50%), a balance is established between the introduction of oxygenated groups and the ablation of the surface. In this case, the surface degradation has, as a consequence, the ageing effect. (C) 1997 John Wiley & Sons, Inc. [References: 22]
机译：在这项工作中，研究了聚对苯二甲酸乙二醇酯（PET）薄膜在氦氧混合物中以低频（70 kHz）放电进行的表面处理。光学发射光谱法和质谱法用于分析气相。表面特性通过X射线光电子能谱（XPS）技术和接触角测量进行分析。优化处理条件以获得表面功能化，这将显示降低的老化效果。通过交联过程处理过的表面的稳定性似乎与放电中氦亚稳态物质的存在密切相关。对于含有少于5％O-2的气体混合物进行处理的样品，其老化时间具有非常好的稳定性，在这种条件下，似乎在增强的交联层上形成了氧化的聚合物结构。当O-2的含量高于百分之几时，氦激发物质的非常有效的损失会影响表面交联。对于引入反应器中的大量氧气（大于约50％），在引入氧化基团与表面烧蚀之间建立了平衡。在这种情况下，表面退化因此具有时效效应。 （C）1997 John Wiley＆Sons，Inc. [参考：22]

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