Silica nanoparticles dispersed in a self-assembled viscoelastic matrix: structure, rheology, and comparison to reinforced elastomers
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| Formato: | Artículo científico |
| Lenguaje: | en |
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Sociedade Brasileira de Física
2009
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| _version_ | 1876446432274153472 |
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| author | Nicolas Puech |
| author_facet | Nicolas Puech |
| contents | Silica nanoparticles dispersed in a self-assembled viscoelastic matrix: structure, rheology, and comparison to reinforced elastomers Nicolas Puech Serge Mora Grégoire Porte Ty Phou Isabelle Grillo Julian Oberdisse Física, Astronomía y Matemáticas Colloid rheology microemulsions polymer mixtures small angle neutron scattering Model self-assembled networks of telechelic polymer C18 - PEO(35k) - C18 in water have been studied. The rheology of such transient networks has been investigated as a function of polymer concentration, and a typical percolation law has been observed. The network structure has been characterised by Small Angle Neutron Scattering in D2O, where the interactions between micelles formed by the hydrophobic C18-stickers of the polymer give rise to a peak in the scattered intensity. These model networks have then been used as a matrix for the incorporation of silica nanoparticles (R = 10 nm), and we have checked individual dispersion by scattering using contrast variation. The rheological response of the networks is considerably modified by the presence of the silica nanoparticles, and in particular an interesting dependence of the relaxation time on silica concentration has been found. The analogy in reinforcement behaviour of such a self-assembled, viscoelastic, and aqueous system with model experiments of elastomers filled with nanoparticles is discussed by comparison to a silica-latex system. 2009 artículo científico 0103-9733 https://www.redalyc.org/articulo.oa?id=46413556012 en http://www.redalyc.org/revista.oa?id=464 Brazilian Journal of Physics application/pdf Sociedade Brasileira de Física Brazilian Journal of Physics (Brasil) Num.1A Vol.39 |
| format | Artículo científico |
| id | redalyc_46413556012 |
| institution | Redalyc |
| language | en |
| publishDate | 2009 |
| publisher | Sociedade Brasileira de Física |
| spellingShingle | Silica nanoparticles dispersed in a self-assembled viscoelastic matrix: structure, rheology, and comparison to reinforced elastomers Nicolas Puech Física, Astronomía y Matemáticas Colloid rheology microemulsions polymer mixtures small angle neutron scattering Silica nanoparticles dispersed in a self-assembled viscoelastic matrix: structure, rheology, and comparison to reinforced elastomers Nicolas Puech Serge Mora Grégoire Porte Ty Phou Isabelle Grillo Julian Oberdisse Física, Astronomía y Matemáticas Colloid rheology microemulsions polymer mixtures small angle neutron scattering Model self-assembled networks of telechelic polymer C18 - PEO(35k) - C18 in water have been studied. The rheology of such transient networks has been investigated as a function of polymer concentration, and a typical percolation law has been observed. The network structure has been characterised by Small Angle Neutron Scattering in D2O, where the interactions between micelles formed by the hydrophobic C18-stickers of the polymer give rise to a peak in the scattered intensity. These model networks have then been used as a matrix for the incorporation of silica nanoparticles (R = 10 nm), and we have checked individual dispersion by scattering using contrast variation. The rheological response of the networks is considerably modified by the presence of the silica nanoparticles, and in particular an interesting dependence of the relaxation time on silica concentration has been found. The analogy in reinforcement behaviour of such a self-assembled, viscoelastic, and aqueous system with model experiments of elastomers filled with nanoparticles is discussed by comparison to a silica-latex system. 2009 artículo científico 0103-9733 https://www.redalyc.org/articulo.oa?id=46413556012 en http://www.redalyc.org/revista.oa?id=464 Brazilian Journal of Physics application/pdf Sociedade Brasileira de Física Brazilian Journal of Physics (Brasil) Num.1A Vol.39 |
| title | Silica nanoparticles dispersed in a self-assembled viscoelastic matrix: structure, rheology, and comparison to reinforced elastomers |
| topic | Física, Astronomía y Matemáticas Colloid rheology microemulsions polymer mixtures small angle neutron scattering |
| url | https://www.redalyc.org/articulo.oa?id=46413556012 |