Thermodynamics of ionic microgels
Visualizar/abrir
Data
2002Tipo
Abstract
We present a theory of dilute aqueous suspensions of microgel particles. It is found that as the number of charged monomers in the polymer network composing mesoscopic gel increases, the particles undergo a swelling transition. Depending on the hydrophobicity of the polymer, this transition can be either continuous or discontinuous. Furthermore, similar to charge stabilized colloidal particles, we find that the electrophoretic mobility of the microgel is controlled by an effective charge. Unlik ...
We present a theory of dilute aqueous suspensions of microgel particles. It is found that as the number of charged monomers in the polymer network composing mesoscopic gel increases, the particles undergo a swelling transition. Depending on the hydrophobicity of the polymer, this transition can be either continuous or discontinuous. Furthermore, similar to charge stabilized colloidal particles, we find that the electrophoretic mobility of the microgel is controlled by an effective charge. Unlike the colloids, however, for which the effective charge grows asymptotically with the logarithm of the bare charge, the effective charge of an ionic microgel scales as Zeff~Z0.5. The findings are in good agreement with the experimental measurements. ...
Contido em
Physical review. E, Statistical, nonlinear, and soft matter physics. Vol. 65, no. 3 (Mar. 2002), 036143, 6 p.
Origem
Estrangeiro
Coleções
-
Artigos de Periódicos (39565)Ciências Exatas e da Terra (6036)
Este item está licenciado na Creative Commons License