RT info:eu-repo/semantics/article
T1 Extensional rheology, cellular structure, mechanical behavior relationships in HMS PP/montmorillonite foams with similar densities
A1 Laguna Gutiérrez, Ester
A1 López Gil, Alberto
A1 Sáiz Arroyo, Cristina
A1 Van Hooghten, Ron
A1 Moldenaers, Paula
A1 Rodríguez Pérez, Miguel Ángel
AB The main goal of this work is to analyze the relationshipsbetween the extensional rheological behavior of solidnanocomposites based on high melt strength polypropylene(HMS PP) and montmorillonites (MMT) and the cellular structureand mechanical properties of foams produced from thesematerials. For this purpose two systems have been analyzed.The first one incorporates organomodified MMT and acompatibilizer and the second system contains natural claysand is produced without the compatibilizer. Results indicatethat the extensional rheological behavior of both materials iscompletely different. The strain hardening of the polymer containingorganomodified clays decreases as the clay contentincreases. As a consequence, the open cell content of this materialincreaseswith the clay content and hence, themechanicalproperties get worse. However, in the materials produced withnatural clays this relationship is not so clear. While no changesare detected in the extensional rheological behavior by addingthese particles, the nano-filled materials show an open cellstructure, opposite to the closed cell structure of the pure polymer,which is caused by the fact of having particle agglomerateswith a size larger than the thickness of the cell walls and apoor compatibility between the clays and the polymer.
PB Springer
YR 2016
FD 2016
LK http://uvadoc.uva.es/handle/10324/25883
UL http://uvadoc.uva.es/handle/10324/25883
LA eng
NO J Polym Res (2016) 23: 251
NO Producción Científica
DS UVaDOC
RD 22-nov-2024