Determination of Mechanical Properties of Polymer Interphase Using Combined Atomic Force Microscope (AFM) Experiments and Finite Element Simulations
| Autor: | Yang Li, Pavan V. Kolluru, L. Catherine Brinson, Min Zhang |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
chemistry.chemical_classification
Materials science Polymers and Plastics Polymer nanocomposite Organic Chemistry 02 engineering and technology Polymer Nanoindentation 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences Finite element method 0104 chemical sciences Characterization (materials science) Inorganic Chemistry Stress field chemistry Indentation Materials Chemistry Interphase Composite material 0210 nano-technology |
| Zdroj: | Macromolecules. 51:8229-8240 |
| ISSN: | 1520-5835 0024-9297 |
| DOI: | 10.1021/acs.macromol.8b01427 |
| Popis: | In polymer nanocomposites (PNCs), the physical and chemical interactions at the polymer matrix–filler interface lead to local variations in polymer properties over a substantial “interphase” region in the vicinity of the interface. Characterization of mechanical properties in the polymer interphase region is essential for informed modeling and design of advanced PNCs. Direct contact measurement of the mechanical properties in the interphase region has been performed via high-resolution scanning probe nanoindentation experiments on model polymer–substrate samples. However, the force–displacement data from indentation experiments are affected by the interaction of the elastic stress field with the substrate, which limits determination of the interphase properties close to the polymer–substrate boundary. To extract the mechanical properties of the interphase from experimentally measured data, three-dimensional finite element analysis (3D FEA) models are developed in this study to simulate the indentation exp... |
| Databáze: | OpenAIRE |
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