Surface degradation and hydrophobic recovery of polyolefins treated by air corona and nitrogen atmospheric pressure glow discharge
Surface degradation and hydrophobic recovery of polyolefins treated by air corona and nitrogen atmospheric pressure glow discharge
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DOI：
10.1002/app.21134
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发表时间：
2004-11-05
影响因子：
3
通讯作者：
Wertheimer, MR
中科院分区：
文献类型：
--
作者：
Guimond, S;Wertheimer, MR
研究了两种不同介质阻挡放电（DBD）处理方式，即空气电晕和氮气常压辉光放电（N(2) APGD），在双轴取向聚丙烯（BOPP）和低密度聚乙烯（LDPE）薄膜上的表面降解和低分子量氧化材料（LMWOM）的生成。接触角测量，x射线光电子能谱（XPS）和原子力显微镜（AFM）分析，并在水中冲洗处理过的薄膜。结果表明，两种聚烯烃的N(2) APGD处理导致更少的表面降解，因此，允许更高的功能化程度和更好的润湿性。通过在处理后长达几个月的时间内监测其表面能（γ (s)），还研究了处理后膜的疏水恢复。采用两种表面改性技术后，处理过的聚烯烃薄膜都具有疏水性恢复；然而，对于N(2) APGD修饰的表面，γ (s)在几天后停止下降，并达到比空气电晕处理的膜更高的稳定值。(C) 2004 Wiley期刊有限公司
The surface degradation and production of low molecular weight oxidized materials (LMWOM) on biaxially oriented polypropylene (BOPP) and low-density polyethylene (LDPE) films was investigated and compared for two different dielectric barrier discharge (DBD) treatment types, namely air corona and nitrogen atmospheric pressure glow discharge (N(2) APGD). Contact angle measurements, X-ray photoelectron spectroscopy (XPS), and atomic force microscopy (AFM) analyses were performed in conjunction with rinsing the treated films in water. It is shown that N(2) APGD treatments of both polyolefins result in much less surface degradation, therefore, allowing for a significantly higher degree of functionalization and better wettability. Hydrophobic recovery of the treated films has also been studied by monitoring their surface energy (gamma(s)) over a period of time extending up to several months after treatment. Following both surface modification techniques, the treated polyolefin films were both found to undergo hydrophobic recovery; however, for N(2) APGD modified surfaces, gamma(s) ceases to decrease after a few days and attains a higher stable value than in the case of air corona treated films. (C) 2004 Wiley Periodicals, Inc.