Studies of macromolecular entanglements. I. Melting behavior of swelling polymers with macromolecular entanglements
| Autor: | Chengxun Wu, Zongquan Wu, Jian Qin, Jiongxin Zhao, Baojun Qian, Panpan Hu |
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| Rok vydání: | 1991 |
| Předmět: |
chemistry.chemical_classification
Materials science Polymers and Plastics Polymer science General Chemistry Polymer Paracrystalline Surfaces Coatings and Films Synthetic fiber Differential scanning calorimetry chemistry Materials Chemistry Melting point medicine Swelling medicine.symptom Melting-point depression Macromolecule |
| Zdroj: | Journal of Applied Polymer Science. 42:1155-1166 |
| ISSN: | 1097-4628 0021-8995 |
| DOI: | 10.1002/app.1991.070420429 |
| Popis: | In this paper the swelling and melting behavior of several polymers, particularly acrylic fibers, is studied by thermomicroscopy and differential scanning calorimetry in detail. It is confirmed that the protrusion peak on the tail part of the DSC thermogram of swelling polymers is closely associated with the macromolecular entanglements. The proposed swelling DSC method is proved to be very effective for studying polymer entanglements. It is also shown that the melting point, whether of paracrystalline region or of entanglement structural unit, can be well fitted to Flory's melting point depression theory. |
| Databáze: | OpenAIRE |
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