Baker K C, Drelich J, Miskioglu I, Israel R, Herkowitz H N
Department of Materials Science and Engineering, Michigan Technological University, Houghton, MI, USA.
Acta Biomater. 2007 May;3(3):391-401. doi: 10.1016/j.actbio.2006.08.008. Epub 2006 Oct 31.
The effect of ultraviolet irradiation and glow discharge (GD) processing of the polyethylene (PE) substrates on deposition of calcium phosphate (CaP) films from supersaturated aqueous calcium phosphate solutions was investigated in this study. CaP coatings deposited on the PE substrates were comprised of elongated clusters of spherical particles and 100% of the free surface area of nearly all of the substrates was covered with a porous CaP film after a 3 day immersion. Nano-scratch tests determined that PE-CaP adhesion was most improved when PE substrates were subjected to 50W GD treatments. As determined by contact angle measurements, the GD-treated PE samples had the highest electron donor parameter of surface energy, suggesting that enhancing the electron donor parameter of PE leads to improved adhesion with the biomimetic CaP coating.
本研究考察了聚乙烯（PE）基底经紫外线照射和辉光放电（GD）处理后，对从过饱和磷酸钙水溶液中沉积磷酸钙（CaP）薄膜的影响。沉积在PE基底上的CaP涂层由球形颗粒的细长簇组成，经过3天浸泡后，几乎所有基底100%的自由表面积都被多孔CaP薄膜覆盖。纳米划痕试验表明，当PE基底进行50W的GD处理时，PE与CaP的附着力得到最大改善。通过接触角测量确定，经GD处理的PE样品具有最高的表面能电子供体参数，这表明提高PE的电子供体参数可改善与仿生CaP涂层的附着力。
