Resumen:
Many mineralization processes occur in convection-free conditions. Understanding these processes requires knowledge of crystal nucleation and growth processes in gels or high viscous sol systems. In this work, the crystallization parameters of calcium carbonate in an agarose viscous sol using counterdiffusion crystallization were monitored as a function of time. Additionally, by comparing the precipitation parameters in the high viscous sol entrapping charged polypeptides, namely, poly-l-lysine (pLys), poly-l-aspartate (pAsp), and poly-l-glutamate (pGlu), it was possible to establish the polypeptide capability to inhibit, or eventually promote, the calcium carbonate nucleation and/or crystal growth processes. The polymorphism and morphology of the precipitates indicate that pLys only influences the growth mechanism of calcium carbonate without affecting the nucleation process. On the contrary, pAsp and, to a minor extent, pGlu affect both nucleation and growth. The application of this analysis can be extended to other additives and macromolecules able to affect crystallization processes.
Índice de impacto JCR y cuartil WoS: 4,558 - Q1 (2013); 3,800 - Q1 (2022)
Referencia DOI:
https://doi.org/10.1021/cg400523w
Publicado en papel: Septiembre 2013.
Publicado on-line: Julio 2013.
Cita:
M. Sancho-Tomás, S. Fermani, M.A. Durán-Olivencia, F. Otálora Muñoz, J. Gómez-Morales, G. Falini, J.M. García-Ruiz, Influence of charged polypeptides on nucleation and growth of CaCO3 evaluated by counterdiffusion experiments. Crystal Growth and Design. Vol. 13, nº. 9, pp. 3884 - 3891, Septiembre 2013. [Online: Julio 2013]
