Surface Modification of a Thermoplastic Polyurethane by Low-Pressure Plasma Treatment to Improve Hydrophilicity
Surface Modification of a Thermoplastic Polyurethane by Low-Pressure Plasma Treatment to Improve Hydrophilicity
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DOI：
10.1002/app.34348
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发表时间：
2011-11-15
影响因子：
3
通讯作者：
Gil, Maria Helena
中科院分区：
文献类型：
--
作者：
Alves, Patricia;Pinto, Susana;Gil, Maria Helena
材料在生物环境中的性能主要由其表面特性以及特定应用所需的化学、物理、生物和机械特性的组合介导。在这项研究中，通过等离子体处理成功地对热塑性聚氨酯（TPU）材料（Elastollan（R）1180 A50）的表面进行了改性。两种不同的工作气体进行了研究：氩气和氧气，这促进了含氧基团在表面上的结合。最佳等离子体参数进行了研究，通过评估表面的润湿性。使用X射线光电子能谱（XPS）的表面官能团化学的变化进行了研究。所获得的结果表明，等离子体处理过程引起的表面改性，在所有情况下，增加了表面的极性性质。在所需的性能方面，有人发现，最佳的操作条件是：100 W的气体等离子体，在60 Pa的压力下3分钟。氩气似乎是更有效的，然后氧气，因为较低的水接触角的结果得到。(C)2011 Wiley Periodicals，Inc. J Appl Polym Sci 122：2302-2308，2011
The performance of a material in a biological environment is mainly mediated by its surface properties and the combination of chemical, physical, biological, and mechanical properties required for a specific application. In this study, the surface of a thermoplastic polyurethane (TPU) material (Elastollan (R) 1180A50) was successfully modified by plasma treatment. Two different working gases were studied: argon and oxygen, which promoted the incorporation of oxygen-containing groups on the surface. The optimal plasma parameters were investigated by evaluating the wettability of the surfaces. Changes in the surface functional groups chemistry were studied using X-ray photoelectron spectroscopy (XPS). The obtained results showed that the plasma treatment process caused surface modifications that, in all cases, increased the polar nature of the surface. In terms of the desirable properties, it was found that the best operational conditions were: 100 W gas plasma, under a pressure of 60 Pa for 3 min. Argon seems to be more efficient then oxygen, because lower water contact angle results were obtained. (C) 2011 Wiley Periodicals, Inc. J Appl Polym Sci 122: 2302-2308, 2011