Tailoring electroactive poly(vinylidene fluorideco-trifluoroethylene) microspheres by a nanoprecipitation method

Poly(vinylidene fluorideco-trifluoroethylene) (P(VDF-TrFE)) microspheres were obtained by a nanoprecipitation method based on the deposition of a polymeric solution over a non-solvent (NS) solution. The effect of several parameters on sphere formation was evaluated, including copolymer concentration...

ver descrição completa

Detalhes bibliográficos
Autor principal: Macedo, A. S. (author)
Outros Autores: Carvalho, Estela (author), Cardoso, V. F. (author), Correia, D. M. (author), Tubio, C. R. (author), Fidalgo-Marijuan, A. (author), Botelho, Gabriela (author), Lanceros-Méndez, S. (author)
Formato: article
Idioma:eng
Publicado em: 2020
Assuntos:
Microspheres
Nanoprecipitation
Electroactive
P(VDF-TrFE)
Science & Technology
Texto completo:http://hdl.handle.net/1822/63828
País:Portugal
Oai:oai:repositorium.sdum.uminho.pt:1822/63828
Descrição
Resumo:Poly(vinylidene fluorideco-trifluoroethylene) (P(VDF-TrFE)) microspheres were obtained by a nanoprecipitation method based on the deposition of a polymeric solution over a non-solvent (NS) solution. The effect of several parameters on sphere formation was evaluated, including copolymer concentration, NS content (methanol/water ratio) and surfactant type. Morphological and physico-chemical characterizations were performed. Depending on processing conditions, spheres with diameters ranging from ~100 to 1100nm with similar physico-chemical properties were obtained. Independently of the processing conditions, P(VDF-TrFE) microspheres crystallize in the electroactive phase with an average crystallinity of 26%. Thus, samples show the required characteristics for biomedical applications.

Registos relacionados