Abstract

The results of investigation of the surface physical and chemical properties of polylactic acid, hydroxyapatite and a composite material based on them taken in the ratio of components 80/20, modified by carbon ions with exposure doses of 1 × 10¹⁵ and 1 × 10¹⁶ ion/cm² at an accelerating voltage of 20 kV are presented. The surface chemical composition of the samples is studied by Fourier transform infrared spectroscopy. The elemental composition of the surface is studied by X-ray photoelectron spectroscopy. According to the obtained results, the simultaneous processes of destruction and cross linking of polylactic acid and polymer macromolecules are established. To assess the wettability of the untreated and modified surface of materials, contact-angle measurements and surface energy calculations are performed. It is established that carbon-ion implantation leads to improvement in the hydrophobic properties of materials; this process is accompanied by a decrease in the free surface energy.

中文翻译：

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碳离子注入对聚乳酸，羟基磷灰石及其复合材料表面物理化学性能的影响

摘要

以组分80/20的比例，以碳离子修饰的暴露剂量为1×10 ¹⁵和1×10 ¹⁶的比例对聚乳酸，羟基磷灰石和基于它们的复合材料的表面物理和化学性质进行研究的结果离子/厘米²提出了20 kV的加速电压。样品的表面化学组成通过傅立叶变换红外光谱法研究。通过X射线光电子能谱研究了表面的元素组成。根据获得的结果，建立了聚乳酸和聚合物大分子的破坏和交联的同时过程。为了评估未处理和改性材料表面的润湿性，进行了接触角测量和表面能计算。可以确定的是，碳离子注入可以改善材料的疏水性。该过程伴随着自由表面能的降低。