Determination of ceiling temperature and thermodynamic properties of low ceiling temperature polyaldehydes
| Autor: | Oluwadamilola Phillips, Paul A. Kohl, Anthony Engler, Jihyun Lee, Jared M. Schwartz |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
chemistry.chemical_classification
Linear region Polymers and Plastics Chemistry Organic Chemistry Enthalpy Thermodynamics 02 engineering and technology Polymer 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences 0104 chemical sciences Ceiling temperature Polymerization Polymer chemistry Materials Chemistry Proton NMR 0210 nano-technology |
| Zdroj: | Journal of Polymer Science Part A: Polymer Chemistry. 56:221-228 |
| ISSN: | 1099-0518 0887-624X |
| DOI: | 10.1002/pola.28888 |
| Popis: | Knowledge of the ceiling temperature and thermodynamic variables for low ceiling temperature polymers is critical to understanding the material's synthesis and use. Synthesis of the polymer below its ceiling temperature is the routine polymerization route. In situ 1H NMR of the equilibrium polymerization reaction can provide critical information for determining the enthalpy and entropy of polymer formation. Three polyaldehydes were synthesized with in situ 1H NMR, and their energies of formation were determined for the linear region of ceiling temperature. Insights into the mechanism of polymerization were also found using this method. © 2017 Wiley Periodicals, Inc. J. Polym. Sci., Part A: Polym. Chem. 2018, 56, 221–228 |
| Databáze: | OpenAIRE |
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