Methods Gelatin, collagen and RGD peptide Arginine Glycine Aspartic acid were physically adsorbed on PS surfaces, XPS was employed to investigate the variation of nitrogen content on the modified surfaces to validate the existence of proteins.
Methods Gelatin, collagen and RGD peptide Arginine Glycine Aspartic acid were physically adsorbed on PS surfaces, XPS was employed to investigate the variation of nitrogen content on the modified surfaces to validate the existence of proteins.
方法采用物理包被法依靠疏水作用在PS表面架构明胶、胶原和RGD(精氨酸-甘氨酸-天冬氨酸)多肽的生物活性层。 通过光电子能谱(XPS)分析修饰表面的元素含量变化,N元素含量显著提高,说明蛋白分子在表面存在。