Influence of Water Vapor Addition on the Surface Modification of Polyethylene in an Argon Dielectric Barrier Discharge
Influence of Water Vapor Addition on the Surface Modification of Polyethylene in an Argon Dielectric Barrier Discharge
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DOI：
10.1002/ppap.201300088
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发表时间：
2014-02
影响因子：
3.5
通讯作者：
A. V. Deynse;N. Geyter;C. Leys;R. Morent
中科院分区：
文献类型：
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作者：
A. V. Deynse;N. Geyter;C. Leys;R. Morent
为了深入研究水蒸气对聚乙烯(PE)表面改性的影响，在中压下的Ar介质阻挡放电中加入了高达41%的水蒸气。接触角测量表明，经纯Ar等离子体处理后，PE的润湿性显著提高。然而，在进气中加入水蒸气可以使水接触角额外降低30%。这种额外的减少是由于加入了额外的含氧基团，如CO、CO、OCO和OCO。AFM结果表明，只有在无水蒸气浓度或低水蒸气浓度的等离子体处理下，PE的表面粗糙度才会增加。所有这些都表明，水蒸气等离子体可以作为PE表面活化的一种很好的工具。
In this paper, water vapor up to 41% is added to an argon dielectric barrier discharge at medium pressure to profoundly investigate the effect of water vapor addition on the surface modification of polyethylene (PE). Contact angle measurements show that the wettability of PE significantly increases after a pure argon plasma treatment. However, the addition of water vapor to the argon feeding gas can give an extra 30% decrease in water contact angle. This extra decrease is due to the incorporation of additional oxygen containing groups such as CO, CO, OCO, and OCO. AFM results reveal that the surface roughness of PE only increases for plasma treatments with no or low water vapor concentrations. All this indicates that a water vapor based plasma can be an excellent tool for the surface activation of PE.