Effect of amide distribution in polyamide isomers on their melting points
| Autor: | Rudy Rulkens, Betty Coussens |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
chemistry.chemical_classification
Materials science Polymers and Plastics Distribution (number theory) Thermodynamics 02 engineering and technology General Chemistry Polymer 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences 0104 chemical sciences Surfaces Coatings and Films chemistry.chemical_compound Monomer chemistry Chain (algebraic topology) Amide Polyamide Polymer chemistry Materials Chemistry Melting point Methylene 0210 nano-technology |
| Zdroj: | Journal of Applied Polymer Science. 135:45837 |
| ISSN: | 0021-8995 |
| Popis: | A new insight has been obtained relating the different structures of linear aliphatic homopolyamides to their melting points. A new equation is derived for structures based on monomers with an even number of methylene units. In this equation, the amide distribution along the polymer chain is defined by a newly introduced parameter K which indicates the lowest number of methylene units between adjacent amide groups. For K ≥ 4 a generic empirical relation is defined, describing the observed melting points of these polyamides. The trend in H-bond densities in the melt obtained by modeling corresponds well with the trend in observed melting points. © 2017 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2018, 135, 45837. |
| Databáze: | OpenAIRE |
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