Utilize este identificador para referenciar este registo:
https://hdl.handle.net/1822/22696
Título: | On the origin of the electroactive poly(vinylidene fluoride) β-phase nucleation by ferrite nanoparticles via surface electrostatic interactions |
Autor(es): | Martins, Pedro Costa, Carlos M. Benelmekki, M. Botelho, Gabriela Lanceros-Méndez, S. |
Data: | 2012 |
Editora: | Royal Society of Chemistry |
Revista: | Crystengcomm |
Resumo(s): | Flexible multiferroic 0-3 composite films, comprising NiFe2O4 and CoFe2O4 ferrite nanoparticles in a polyvinylidene fluoride (PVDF) matrix, have been prepared by solvent casting and melt crystallization to investigate the polymer β-phase nucleation mechanism. Infrared spectroscopy confirms the nucleation of the polymeric electroactive β-phase with the addition of both ferrites, although the loading of ferrite 10 nanoparticles needed to obtain the highest amount of β-phase was found to be one order of magnitude higher in the NiFe2O4/PVDF nanocomposites. Transmission electron microscopy imaging and thermogravimetric analyses indicate the formation of an interface in the nanocomposites with the β-phase nucleation. It is shown that the essential factor for the nucleation of the β-phase in the ferrites/PVDF nanocomposites is the static electric interaction between the magnetic particles with a negative zeta 15 potential and the CH2 groups having a positive charge density. |
Tipo: | Artigo |
URI: | https://hdl.handle.net/1822/22696 |
DOI: | 10.1039/c2ce06654h |
ISSN: | 1466-8033 |
Arbitragem científica: | yes |
Acesso: | Acesso restrito UMinho |
Aparece nas coleções: | CDF - FCD - Artigos/Papers (with refereeing) |
Ficheiros deste registo:
Ficheiro | Descrição | Tamanho | Formato | |
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CEC-2012.pdf Acesso restrito! | 1,09 MB | Adobe PDF | Ver/Abrir |