Single‐step deposition of hexamethyldisiloxane surface gradient coatings with a high amplitude of water contact angles over a polyethylene foil,Plasma Processes and Polymers

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Single‐step deposition of hexamethyldisiloxane surface gradient coatings with a high amplitude of water contact angles over a polyethylene foil
Plasma Processes and Polymers ( IF 2.9 ) Pub Date : 2020-08-30 , DOI: 10.1002/ppap.202000044
Hediyeh Malekzad _{1,

2} , Tommaso Gallingani ₃ , Federica Barletta ₃ , Matteo Gherardi _{3,

4} , Vittorio Colombo _{3,

4} , David Duday ₁

Affiliation

One interesting category of nano‐ and micro‐engineered surfaces is surface gradients, which allow the controlled optimization of biointerfaces at a small scale in an extended area length. Plasma coatings offer a large diversity of functionalities at the nanoscale, accompanied by high chemical stability and adhesion on a variety of substrates at ambient temperature. Atmospheric‐pressure plasma‐assisted deposition could be employed for the generation of surface gradients on thermosensitive materials. In this study, a corona plasma jet is used to deposit polydimethylsiloxane/SiO₂‐like surface gradients on polyethylene foil by varying the O₂ concentration in the discharge during the movement of the plasma source. We obtained, in a single‐step approach, gradient coatings along a length of ∼10 cm, with a gradual variation of both chemistry and surface energy.

中文翻译：

在聚乙烯箔上一步沉积具有高水接触角幅度的六甲基二硅氧烷表面梯度涂料

纳米和微工程表面的一个有趣的类别是表面梯度，它允许在扩展的区域长度内以小规模对生物界面进行受控优化。等离子涂层在纳米级提供了多种功能，同时在环境温度下还具有很高的化学稳定性和在各种基材上的附着力。大气压等离子体辅助沉积可用于在热敏材料上产生表面梯度。在这项研究中，通过改变O ₂，使用电晕等离子体喷射器在聚乙烯箔上沉积聚二甲基硅氧烷/ SiO ₂样表面梯度。在等离子体源移动过程中放电中的浓度。我们通过一步法获得了约10厘米长的梯度涂层，化学和表面能都在逐渐变化。

更新日期：2020-08-30

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