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

聚合物-固体界面模型中的粘附：纳米级界面与宏观粘附之间的关系

• 批准号: 67581446
• 负责人: Professor Dr. Manfred Stamm
• 金额: --
• 依托单位: Leibniz-Institut für Polymerforschung Dresden (IPF)
• 依托单位国家: 德国
• 项目类别: Priority Programmes
• 财政年份: 2008
• 资助国家: 德国
• 起止时间: 2007-12-31 至 2014-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/67581446?language=en
• 关键词: Adhesion; Model; Polymer; Solid; Interphases

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.

对于许多实际应用，聚合物与无机基材、纤维或颗粒之间的粘附是至关重要的。基本的粘附力已经是一个复杂的过程，其一方面与聚合物和基材之间的界面的形成直接相关，但另一方面取决于在相对大的塑性变形区域中的材料性质，该塑性变形区域大大超过界面（实际粘附力）。然而，粘附的细节并没有被深入理解。本提案建议使用定义明确的模型聚合物系统与定制的接口，结合聚合物-无机界面的纳米级调查，通过先进的表征技术与聚合物和无机基材之间的宏观粘附力的测量。这需要在不同的长度尺度上以及在变形期间的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，并且将冻结拉脱过程中的不同阶段，以详细表征形态学方面。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比较分析，有助于理解微观界面相和宏观粘附之间的关系，从而更好地理解粘附过程。