Direct Evaluation of Local Dynamic Viscoelastic Properties of Isotactic Polypropylene Films Based on a Dynamic μ-Beam X-ray Diffraction Method
| Autor: | Atsushi Takahara, Hiroyasu Masunaga, Ken Kojio, Kazutaka Kamitani, Chao Hung Cheng, Kohki Aoyama, Chigusa Nagano, Shiori Masuda, Shuhei Nozaki, Kazutoshi Yokomachi |
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| Rok vydání: | 2019 |
| Předmět: |
Diffraction
chemistry.chemical_classification Materials science Polymers and Plastics Organic Chemistry Synchrotron radiation 02 engineering and technology Polymer 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences Viscoelasticity 0104 chemical sciences Inorganic Chemistry chemistry Tacticity X-ray crystallography Materials Chemistry Composite material Direct evaluation 0210 nano-technology Beam (structure) |
| Zdroj: | ACS Macro Letters. 8:218-222 |
| ISSN: | 2161-1653 |
| DOI: | 10.1021/acsmacrolett.8b00994 |
| Popis: | The local mechanical properties of crystalline polymer were evaluated using synchrotron radiation X-ray diffraction with 10 μm lateral resolution. A nonoriented isotactic polypropylene (iPP) film with isolated spherulites in a crystallized matrix was used as a model sample. In situ wide-angle X-ray diffraction (WAXD) measurement was performed on the iPP film using a microbeam synchrotron radiation X-ray under sinusoidal strain. The lattice spacing of the crystal planes increased and decreased in response to the applied sinusoidal strain. Local dynamic viscoelastic functions (dynamic storage and loss moduli ( |
| Databáze: | OpenAIRE |
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