Molecular-Level Relation between the Intraparticle Glass Transition Temperature and the Stability of Colloidal Suspensions
Articolo
Data di Pubblicazione:
2023
Citazione:
Molecular-Level Relation between the Intraparticle Glass Transition Temperature and the Stability of Colloidal Suspensions / C. Anzivino, A. Zaccone. - In: THE JOURNAL OF PHYSICAL CHEMISTRY LETTERS. - ISSN 1948-7185. - 14:39(2023 Oct 05), pp. 8846-8852. [10.1021/acs.jpclett.3c02007]
Abstract:
In many colloidal suspensions, the dispersed colloidal particles are amorphous solids, resulting from vitrification. A crucial open problem is understanding how colloidal stability is affected by the intraparticle glass transition. By dealing with the latter process from a solid-state perspective, we estabilish a proportionality relation between the intraparticle glass transition temperature, Tg, and the Hamaker constant, AH, of a generic suspension of nanoparticles. It follows that Tg can be used as a convenient parameter (alternative to AH) for controlling the stability of colloidal systems. Within the Derjaguin-Landau-Verwey-Overbeek theory, we show that the novel relationship, connecting Tg to AH, implies the critical coagulation ionic strength to be a monotonically decreasing function of Tg. We connect our predictions to recent experimental findings.
Tipologia IRIS:
01 - Articolo su periodico
Elenco autori:
C. Anzivino, A. Zaccone
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