Tuning piezoelectric properties in elastomeric polyurethane nanocomposites utilizing cellulose nanocrystals
| Autor: | Alex Otávio Sanches, Nara Regina de Souza Basso, José Antonio Malmonge, Michael Jones da Silva, L.F. Malmonge |
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| Přispěvatelé: | Universidade Estadual Paulista (Unesp), Pontifícia Universidade Católica do Rio Grande do Sul (PUCRS) |
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
thermogravimetric analysis
Thermogravimetric analysis Materials science Nanocomposite Nanostructure Polymers and Plastics piezoelectricity General Chemistry Dielectric Elastomer Piezoelectricity Surfaces Coatings and Films Cellulose nanocrystals chemistry.chemical_compound chemistry dielectric properties nanostructures Materials Chemistry Composite material Polyurethane |
| Zdroj: | Scopus Repositório Institucional da UNESP Universidade Estadual Paulista (UNESP) instacron:UNESP |
| Popis: | Made available in DSpace on 2021-06-25T11:01:24Z (GMT). No. of bitstreams: 0 Previous issue date: 2021-09-10 Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq) Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES) Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP) Flexible piezoelectric nanocomposites have been the subject of a lot of recent research due to the development and use of wearable electronic devices and the increasing need for new harvesting devices and sensors due to increasingly intelligent and interconnected cities. In this study, flexible piezoelectric nanocomposites using elastomeric polyurethane (PU) as matrix, and lead zirconate titanate (PZT) as active phase, were produced using cellulose nanocrystals (CNC) as the third phase. The study describes the effect of CNC insertion on the morphology, thermal, electrical, and piezoelectric properties of the nanocomposites. It points out that the CNCs not only act to cause greater dispersion of the ceramic grains in the matrix, but also to lead to greater polarization effectiveness of the ceramic grains, resulting in a longitudinal piezoelectric coefficient (d33) increase of more than 370%, as compared with biphasic composites dependent on the ceramic and nanocrystals content. Universidade Estadual Paulista (UNESP) Faculdade de Engenharia Câmpus de Ilha Solteira Universidade Estadual Paulista (UNESP) Câmpus Experimental de Rosana Escola de Ciências Pontifícia Universidade Católica do Rio Grande do Sul (PUCRS) Universidade Estadual Paulista (UNESP) Faculdade de Engenharia Câmpus de Ilha Solteira Universidade Estadual Paulista (UNESP) Câmpus Experimental de Rosana CAPES: 001 FAPESP: 2013/07296-2 |
| Databáze: | OpenAIRE |
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