Analysis of transport phenomena during plasma deposition of hydrophobic coatings on porous cellulosic substrates in plane‐to‐plane dielectric barrier discharges at atmospheric pressure,Plasma Processes and Polymers

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Analysis of transport phenomena during plasma deposition of hydrophobic coatings on porous cellulosic substrates in plane‐to‐plane dielectric barrier discharges at atmospheric pressure
Plasma Processes and Polymers ( IF 2.9 ) Pub Date : 2020-08-12 , DOI: 10.1002/ppap.202000091
Sara Babaei ₁ , Jacopo Profili ₁ , Siavash Asadollahi _{1,

2} , Andranik Sarkassian ₂ , Annie Dorris ₃ , Stephanie Beck ₃ , Luc Stafford ₁

Affiliation

In this study, four‐layer stacks of bleached, unrefined Kraft papers are exposed to a plane‐to‐plane dielectric barrier discharge at atmospheric pressure operated in a glow‐like discharge regime and sustained in a mixture of hexamethyldisiloxane and helium gases. Scanning electron microscopy confirms that the plasma‐deposited coating follows the roughness of the porous cellulosic substrate. Whereas fairly spatially homogeneous coatings are obtained on silicon, significant variations of the coatings' thickness, organic content, and water contact angle are observed along the gas flow lines on the Kraft paper. These effects are even more important in the presence of substrate outgassing. In addition, plasma‐generated species sequentially penetrate down to the fourth layer of the cellulosic substrate, rendering surfaces hydrophobic with very low water absorption kinetics.

中文翻译：

在大气压下的平面到平面电介质阻挡层放电中，疏水性涂层在多孔纤维素基底上进行等离子沉积过程中的传输现象分析

在这项研究中，四层漂白，未精制的牛皮纸在大气下以类似辉光的放电方式在平面对平面的电介质阻挡层放电下暴露，并在六甲基二硅氧烷和氦气的混合气体中维持。扫描电子显微镜证实，等离子体沉积的涂层遵循多孔纤维素基材的粗糙度。尽管在硅上获得了空间上相当均匀的涂层，但沿着牛皮纸上的气流线却观察到了涂层厚度，有机物含量和水接触角的显着变化。在底物除气的情况下，这些效果甚至更为重要。此外，血浆产生的物质依次渗透到纤维素底物的第四层，

更新日期：2020-08-12

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