RT info:eu-repo/semantics/article
T1 Polystyrene/sepiolites nanocomposite foams: Relationship between composition, particle dispersion, extensional rheology, and cellular structure
A1 Ballesteros Agudo, Alberto
A1 Laguna Gutiérrez, Ester
A1 Puertas, María Luisa
A1 Esteban Cubillo, Antonio
A1 Santarén, Julio
A1 Rodríguez Pérez, Miguel Ángel
K1 Cellular nanocomposites
K1 Nanocompuestos celulares
K1 Extensional rheology
K1 Reología extensional
K1 Sepiolites
K1 Sepiolita
AB The main objective of this work is to analyze how the cellular structure of foamed polystyrene based (PS) nanocomposites, produced by gas dissolution foaming, is affected by the extensional rheological behavior of the polymer matrix and by the dispersion degree of the particles. These composites have been produced with different types of natural and organomodified sepiolites and with different contents of these particles. The extensional behavior and the dispersion degree were characterized by extensional and shear dynamic rheology, respectively. The results obtained indicate that the extensional rheological behavior controls the foam degeneration mechanisms; meanwhile, the way in which the particles are dispersed in the PS matrix controls the nucleation mechanisms. Results also indicate that, in these systems, the characteristics of the cellular structure are mainly defined by the way in which nucleation occurs. Therefore, improving the dispersion degree is a key approach to reduce the cell size by 90%, with respect to the pure polymer.
PB Elsevier
SN 2352-4928
YR 2021
FD 2021
LK https://uvadoc.uva.es/handle/10324/51716
UL https://uvadoc.uva.es/handle/10324/51716
LA eng
NO Materials Today Communications, 2021, vol. 29, 102850
NO Producción Científica
DS UVaDOC
RD 06-ago-2024