Use of DMA-material pocket to determine the glass transition temperature of nitrocellulose blends in film form
| Autor: | Eloi Alves da Silva Filho, Fabricio Uliana, Kinglston Soares, Priscilla Paiva Luz, Aislana Cole de Paula |
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| Rok vydání: | 2019 |
| Předmět: |
chemistry.chemical_classification
Materials science Polymers and Plastics Organic Chemistry Intermolecular force 02 engineering and technology Dynamic mechanical analysis Polymer 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences Miscibility 0104 chemical sciences chemistry.chemical_compound chemistry Chemical engineering Dynamic modulus Materials Chemistry 0210 nano-technology Glass transition Spectroscopy Nitrocellulose |
| Zdroj: | Carbohydrate polymers. 226 |
| ISSN: | 1879-1344 |
| Popis: | This work describes an unexploited use of DMA-material pocket to determine the glass transition temperature of blends composed by nitrocellulose and poly(Ɛ-caprolactone) in film form. A total of eight blends were prepared increasing the poly(Ɛ-caprolactone) content and changes in the mechanical properties of the blends were determined by DMA-material pocket. Storage modulus, loss modulus, and tan δ were analyzed as a function of temperature. The blends and each former polymer were also analyzed by FTIR-ATR. By the spectroscopy measurements, the intermolecular interactions between poly(Ɛ-caprolactone) and nitrocellulose in the blend is observed, been an evidence of miscibility. Tg of nitrocellulose and poly(Ɛ-caprolactone), 68 and −52 °C respectively, agree with reported values. Tg of the blends shows a single peak of tan δ between the Tg values of isolated former polymers, reinforcing the good miscibility between them. Finally, Tg of the blends exhibits a logarithmic dependence of PCL content, decreasing as poly(Ɛ-caprolactone) content increases. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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