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首页> 外文期刊>Physical chemistry chemical physics: PCCP >Analysis of dispersive interactions at polymer/TiAlN interfaces by means of dynamic force spectroscopy
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Analysis of dispersive interactions at polymer/TiAlN interfaces by means of dynamic force spectroscopy

机译：通过动态力光谱分析聚合物/ TiAln界面的分散相互作用

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摘要

The structural and electronic origins of the interactions between polycarbonate and sputter deposited TiAlN were analysed using a combined electron and force spectroscopic approach. Interaction forces were measured by means of dynamic force spectroscopy and the surface polarizability was analysed by X-ray photoelectron valence band spectroscopy. It could be shown that the adhesive interactions between polycarbonate and TiAlN are governed by van der Waals forces. Different surface cleansing and oxidizing treatments were investigated and the effect of the surface chemistry on the force interactions was analysed. Intense surface oxidation resulted in a decreased adhesion force by a factor of two due to the formation of a 2 nm thick Ti0.21Al0.45O surface oxide layer. The origin of the residual adhesion forces caused by the mixed Ti0.21Al0.45O surface oxide was clarified by considering the non-retarded Hamaker coefficients as calculated by Lifshitz theory, based on optical data from Reflection Electron Energy Loss Spectroscopy. This disclosed increased dispersion forces of Ti0.21Al0.45O due to the presence of Ti(IV) ions and related Ti 3d band optical transitions.
机译：使用组合的电子和力光谱法分析聚碳酸酯和溅射沉积的TiAln之间相互作用的结构和电子起源。通过动态力光谱测量相互作用力，通过X射线光电子型带光谱分析表面极化性。可以表明，聚碳酸酯和TiAln之间的粘合剂相互作用由Van der Waals力控制。研究了不同的表面清洁和氧化处理，并分析了表面化学对力相互作用的影响。由于形成2nM厚的TiO 21Al0.45O表面氧化物层，强烈的表面氧化导致粘合力减小两倍。通过考虑由Lifshitz理论计算的非延迟哈布沙系数，阐明了由Lifshitz理论计算的非延迟哈布拉的系数引起的残留粘附力的起源，基于来自反射电子能量损失光谱的光学数据。由于TI（IV）离子和相关TI 3D带光学转换，这公开了Ti0.21Al0.45O的分散力增加。

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    Wiesing M.; de los Arcos T.; Gebhard M.; Devi A.; Grundmeier G.;

  • 作者单位

    Univ Paderborn Tech &

    Macromol Chem Warburger Str 100 D-33098 Paderborn Germany;

    Univ Paderborn Tech &

    Macromol Chem Warburger Str 100 D-33098 Paderborn Germany;

    Ruhr Univ Bochum Inorgan Chem 2 Univ Str 150 D-44801 Bochum Germany;

    Ruhr Univ Bochum Inorgan Chem 2 Univ Str 150 D-44801 Bochum Germany;

    Univ Paderborn Tech &

    Macromol Chem Warburger Str 100 D-33098 Paderborn Germany;

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  • 正文语种 eng
  • 中图分类 物理学;化学;
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