Adhesion in Model Polymer-Solid Interphases: Relation between the Nanoscopic Interphase and Macroscopic Adhesion

在许多实际应用中，聚合物与无机基质、纤维或颗粒之间的粘附性是非常重要的。基本粘接已经是一个复杂的过程，一方面与聚合物和基材之间界面的形成直接相关，但另一方面取决于材料在相对较大的塑性变形区域内的性能，该区域大大超过了界面(实际粘合)。然而，粘附性的细节还没有被深入了解。本建议建议使用具有定制界面的明确的模型聚合物体系，将通过先进的表征技术对聚合物-无机界面相的纳米研究与聚合物与无机基质之间的宏观附着力的测量相结合。这需要在不同的长度尺度上以及变形过程中界面和附近区域的不同方面进行专门的结构和形态分析。与松弛过程相关的动力学也起着重要作用，在拉开过程中的不同阶段将被冻结，以详细描述形态方面的特征。将考虑表面功能化以及粗糙度的影响。将结果与理论模型进行对比分析，将有助于理解微观界面相与宏观粘着之间的关系，从而对粘着过程有更好的基本认识。

For numerous practical applications, the adhesion between polymers and inorganic substrates, fibres or particles is of essential interest. Already the fundamental adhesion is a complex process which on the one hand is directly correlated to the formation of an interphase between polymer and substrate, but on the other hand depends on materials properties in a relatively large plastic deformation region which exceeds largely the interphase (practical adhesion). Details of adhesion are, however, not deeply understood. The present proposal suggests to use well defined model polymer systems with tailored interfaces, combining the nanoscopic investigation of polymer-inorganic interphases by advanced characterisation techniques with measurements of macroscopic adhesion between polymer and inorganic substrate. This requires dedicated structure and morphology analysis at different length scales and on different aspects of the interphase and the region nearby during deformation. Kinetics related to relaxation processes also play a significant role and different stages during pull-off will be frozen in for detailed characterization of morphological aspects. Influence of surface functionalisation as well as roughness will be considered. The analysis of results in comparison to theoretical models will help to understand the relation between microscopic interphase and macroscopic adhesion to obtain a better basic understanding of adhesion processes.