Dependence of fiber-structural formation processes for rigid-rod polymers on the miscibility of their molecular chains in poly-phosphoric acid
| Autor: | Yasuko Mito-oka, Yukihiro Abe, Tooru Kitagawa, Nobuyuki Taniguchi |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
chemistry.chemical_classification
Materials science Polymers and Plastics Organic Chemistry General Physics and Astronomy 02 engineering and technology Polymer Conjugated system 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences Miscibility 0104 chemical sciences Crystal chemistry.chemical_compound chemistry Chemical engineering Phenylene Polymer chemistry Materials Chemistry Molecule Fiber 0210 nano-technology Phosphoric acid |
| Zdroj: | European Polymer Journal. 88:9-20 |
| ISSN: | 0014-3057 |
| DOI: | 10.1016/j.eurpolymj.2017.01.009 |
| Popis: | The relationship between the hydrophilicity of rigid-rod polymers and their fiber structures was investigated. The molecule need to be carefully designed in order to change the fiber properties while maintaining the high-strength and high-modulus properties of the original fibers. The key points were the conjugated molecular structures with straight molecular axes under chemical modifications. In this study, the phenylene rings in poly- p -phenylenebenzobisoxazole were replaced with pyridylene rings. Structural analyses were performed using X-ray scattering methods, and, based on the crystal orientations, the resultant fiber showed high mechanical properties. Effects of molecular hydrophilicity were observed and discussed. The difference between the structural formation processes during coagulation and washing was revealed. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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