Influence of nitrogen plasma treatment on the wettability of polyetheretherketone and deposited chitosan layers
Influence of nitrogen plasma treatment on the wettability of polyetheretherketone and deposited chitosan layers
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DOI：
10.1002/adv.21813
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发表时间：
2018-10-01
影响因子：
3.1
通讯作者：
Jurak, Malgorzata
中科院分区：
文献类型：
--
作者：
Terpilowski, Konrad;Wiacek, Agnieszka Ewa;Jurak, Malgorzata
研究了氮等离子体活化和未活化聚醚醚酮（PEEK）的润湿性。此外，PEEK板覆盖抗菌壳聚糖，其润湿性能也进行了研究。表面形貌用SEM和光学轮廓仪测定，表面组成用FT-IR和XPS测定。对于表观表面自由能的测定，使用滞后法（CAH）、酸碱法（LWAB）和Owens-Wendt（O-W）理论。根据Tadmor理论计算平衡接触角，并应用上述方法进一步用于表观表面能计算。由于表面等离子体活化，表面的粗糙度和表观表面自由能的极性分量增加。结果表明，PEEK表面的氮等离子体活化增加了壳聚糖对表面的粘附力，这是由于以下因素的综合作用：（i）表面粗糙度的增加，（ii）在表面上引入极性基团。
Wettability properties of polyetheretherketone (PEEK) activated and non-activated by nitrogen plasma have been investigated. Moreover, the PEEK plates were covered with antibacterial chitosan and its wettability properties were also investigated. Surface topography was determined using SEM and optical profilometry and surface composition by FT-IR and XPS. For determination of apparent surface free energy, the hysteresis approach (CAH), acid base (LWAB), and Owens-Wendt (O-W) theory were used. The equilibrium contact angles were calculated from the Tadmor theory and further used for apparent surface energy calculation applying the above-mentioned approaches. Due to the surface plasma activation both the roughness of the surface and the polar component of apparent surface free energy increased. It is shown that nitrogen plasma activation of PEEK surface increases the adhesion of chitosan to the surface due to the combination effect of: (i) the increase in surface roughness, (ii) introducing the polar groups onto the surface.