Utilize este identificador para referenciar este registo: http://hdl.handle.net/10400.21/5142
Título: Bicontinuous and mixed gels in binary mixtures of patchy colloidal particles
Autor: Heras, Daniel de las
Tavares, José Maria
Gama, Margarida M. Telo da
Palavras-chave: Directional Attractive Forces
Fluids
Spheres
Complex
Sites
Data: 2012
Editora: Royal Soc Chemistry
Citação: HERAS, D. de Las; TAVARES, J. M.; GAMA, M. M. T. da – Bicontinuous and mixed gels in binary mixtures of patchy colloidal particles. Soft Matter. ISSN: 1744-683X. Vol. 8, nr. 6 (2012), pp. 1785-1794.
Resumo: We investigate the thermodynamics and percolation regimes of model binary mixtures of patchy colloidal particles. The particles of each species have three sites of two types, one of which promotes bonding of particles of the same species while the other promotes bonding of different species. We find up to four percolated structures at low temperatures and densities: two gels where only one species percolates, a mixed gel where particles of both species percolate but neither species percolates separately, and a bicontinuous gel where particles of both species percolate separately forming two interconnected networks. The competition between the entropy and the energy of bonding drives the stability of the different percolating structures. Appropriate mixtures exhibit one or more connectivity transitions between the mixed and bicontinuous gels, as the temperature and/or the composition changes.
Peer review: yes
URI: http://hdl.handle.net/10400.21/5142
DOI: 10.1039/c1sm06948a
ISSN: 1744-683X
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