Introduction of carboxyl group onto polystyrene surface using plasma techniques
Introduction of carboxyl group onto polystyrene surface using plasma techniques
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DOI：
10.1016/j.surfcoat.2008.06.085
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发表时间：
2008-08
影响因子：
5.4
通讯作者：
Y. Sasai;N. Matsuzaki;S. Kondo;M. Kuzuya
中科院分区：
文献类型：
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作者：
Y. Sasai;N. Matsuzaki;S. Kondo;M. Kuzuya
报道了利用等离子体技术在聚苯乙烯（PS）表面引入大量羧基的方法。该方法包括通过等离子体诱导的PS交联反应将乙烯基甲基醚-马来酸酐共聚物（VEMA）固定在PS上，然后通过马来酸酐部分的水解产生羧基。通过水接触角、X射线光电子能谱（XPS）和细胞粘附行为对乙烯基甲基醚-马来酸共聚物（VEMAC）固定的PS（PS/VEMAC）表面进行了表征。与未处理的PS表面相比，表面润湿性显著改善，并且在接近初始获得的值的低水平下保持几乎不变，至少24 h。对培养物中细胞的显微镜观察显示细胞在PS/VEMAC表面具有良好的附着和铺展行为。
We report the methods to introduce a large amount of carboxyl group onto polystyrene (PS) surface using plasma techniques. The method involves the immobilization of vinylmethylether–maleic anhydride copolymer (VEMA) on PS by plasma-induced crosslink reaction of PS, followed by hydrolysis of the maleic anhydride moiety to generate carboxyl group. The resultant vinylmethylether–maleic acid copolymer (VEMAC)-immobilized PS (PS/VEMAC) surface was characterized by water-contact angle measurement, X-ray photoelectron spectroscopy (XPS), and cell adhesion behavior. The surface wettability was significantly improved as compared with that for non-treated PS surface, and remained nearly unchanged at a low level, close to the initially acquired value, for at least 24 h. The microscopic observation of cells in culture showed a good attachment and spreading behavior of cells on the PS/VEMAC surface.