Utilize este identificador para referenciar este registo:
https://hdl.handle.net/1822/23633
Título: | Nanocomposites of poly(ε-caprolactone) doped with titanium species |
Autor(es): | Machado, A. V. Amorim, Sara Botelho, Gabriela Neves, Isabel C. Fonseca, António Manuel |
Palavras-chave: | Nanocomposites Titanium |
Data: | 2013 |
Editora: | Springer |
Revista: | Journal of Materials Science |
Citação: | Machado, A. V., Amorim, S., Botelho, G., Neves, I. C., & Fonseca, A. M. (2013, January 19). Nanocomposites of poly(ε-caprolactone) doped with titanium species. Journal of Materials Science. Springer Science and Business Media LLC. http://doi.org/10.1007/s10853-013-7154-7 |
Resumo(s): | Organic–inorganic hybrid nanocomposites were prepared via in situ sol–gel process. The organic phase is a biodegradable polymer, poly(e-caprolactone) (PCL), while the tetrabutyl titanate (TBT, Ti(OBu)4) was used as inorganic precursor. Synthesis parameters like acidity medium and precursor amount were investigated in order to assess their influence on hybrid properties. The obtained nanocomposites were characterised by thermal analysis, spectroscopic techniques, transmission electronic microscopy (TEM) and X-ray diffraction to gather infor- mation on the structure of the nanocomposites. Mechanical properties and biodegradability were also evaluated. A reaction mechanism based on Fourier transform infrared spectroscopy and NMR results was proposed using methyl acetate as model compound. TEM micrographs of the nanocomposites show a fine good nanoparticles dispersion. Acidic conditions and 10 wt% of precursor lead to a nanocomposite with higher mechanical properties and biodegradability than PCL. |
Tipo: | Artigo |
URI: | https://hdl.handle.net/1822/23633 |
DOI: | 10.1007/s10853-013-7154-7 |
ISSN: | 0022-2461 |
Arbitragem científica: | yes |
Acesso: | Acesso restrito UMinho |
Aparece nas coleções: | CDQuim - Artigos (Papers) IPC - Artigos em revistas científicas internacionais com arbitragem |
Ficheiros deste registo:
Ficheiro | Descrição | Tamanho | Formato | |
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Nanocomposites of PCL.pdf Acesso restrito! | 513,25 kB | Adobe PDF | Ver/Abrir |