Preparation and Characterization of Biodegradable Polyurethane Nanocomposites Based on Poly(3-hydroxybutyrate) and Poly(Butylene Adipate) Using Reactive Organoclay
| Autor: | Mohamed S. Abdel Aziz, Hala F. Naguib, Sherif M. Sherif, Gamal R. Saad |
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| Rok vydání: | 2014 |
| Předmět: |
Materials science
Nanocomposite Polymers and Plastics General Chemical Engineering Materials Science (miscellaneous) Solution polymerization law.invention chemistry.chemical_compound Chemical engineering chemistry Polymerization law Adipate Polymer chemistry Materials Chemistry Organoclay Thermal stability Crystallization Polyurethane |
| Zdroj: | Polymer-Plastics Technology and Engineering. 53:1671-1681 |
| ISSN: | 1525-6111 0360-2559 |
| DOI: | 10.1080/03602559.2014.919651 |
| Popis: | Polyurethane nanocomposites were synthesized using one-step solution polymerization of poly(3-hydroxybutyrate)-diol, poly(butylene adipate)-diol using 1,6-hexamethylene diisocyanate. Nanocomposites were prepared using an in-situ polymerization method. The structure was verified using FTIR and 1HNMR. Morphology was examined by XRD and TEM methods. Thermal properties were examined using DSC and TG. DSC showed that all samples were semicrystalline. The Cloisite 30B enhanced the melt crystallization of PHB segments while hindering those of the PBA segments. Thermal stability was improved compared to the neat PUs samples. The Coats-Redfern model was used to calculate the activation energy. Mechanical properties were improved with incorporation of organoclays. |
| Databáze: | OpenAIRE |
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