空气电晕辐照对聚酯薄膜表面组成及形貌的影响

分析了聚酯薄膜经空气电晕等离子体辐照处理后，其表面组成和形貌的变化。 结果表明，聚酯薄膜表面的活性基团在亲水环境中更倾向于迁移至表面，而不是向次表面或者基材本体内迁移。 薄膜表面C=O和O-H的引入量随电晕辐照强度的增加而增大，XPS结果表明，C-O、C=O和O-C=O的总含量增大，O1s谱图中新峰的结合能为532.49 eV，对应于聚酯薄膜表面过氧化物的-O-O-键。 原子力显微镜研究表明，聚酯薄膜经电晕辐照后，表面形成离散的球状颗粒，表面粗糙度变化范围在10 nm左右。

Effect of Air Corona Discharge Irradiation on the Surface Composition and Morphology of the Polyester Film

The surface composition and morphology of polyester film irradiated by air corona discharge was analyzed. The results show that the active groups are more inclined to migrate to the surface rather than transfer to the subsurface or substrate body in a hydrophilic environment. The amounts of C=O and OH introduced is increased with the increase of the intensity of corona irradiation. The XPS results show an increased content of CO, C=O and O-C, the binding energy of the new peak in the O1s spectrum is 532.49 eV, corresponding to the -O-O- peroxide bond on the surface. Atomic force microscopy studies show that the initial structure ofpolyester film is replaced by a globular morphology, and the change in the surface roughness is in the range of about 10 nm.