Evaluation for most probable distance between adjacent amorphous molecular chains taking preferred orientation with respect to a spinning fiber
| Autor: | Yuezhen Bin, Wenxiao Yang, Masaru Matsuo, Yongjia Yuan |
|---|---|
| Rok vydání: | 2016 |
| Předmět: |
chemistry.chemical_classification
Materials science Polymers and Plastics Organic Chemistry Intermolecular force Izod impact strength test 02 engineering and technology Polymer 010402 general chemistry 021001 nanoscience & nanotechnology Radial distribution function 01 natural sciences 0104 chemical sciences Amorphous solid law.invention chemistry law Materials Chemistry Fiber Composite material Crystallization 0210 nano-technology Spinning |
| Zdroj: | Polymer. 103:112-123 |
| ISSN: | 0032-3861 |
| DOI: | 10.1016/j.polymer.2016.09.029 |
| Popis: | Most probable distance between adjacent molecular chains was evaluated as the first trial for oriented amorphous polymers, using the two-dimensional radial distribution function formulated by a series expansion of Bessel and Legendre functions of coherent X-ray intensity curves. Poly(phthalazinone ether ketone) (PPEK) was selected as the test specimen, since PPEK dissolved in some solvents was one of typical amorphous polymers with high impact strength and high-temperature resistance and PPEK could produce fine fibers by dry spinning in spite of amorphous polymer. Non-crystallization of PPEK chains were analyzed in comparison with chain structure of undrawn amorphous poly(ethylene terephthalate) triggering oriented crystallization. Additionally, the strain between adjacent PPEK chains under external stress along the fiber axis was measured by a homemade instrument in relation to the chain orientation degree. These results indicated that the amorphous chains were connected with strong intermolecular force between adjacent PPEK chains, and the force could achieve fiber spinning. |
| Databáze: | OpenAIRE |
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