Model filled polymers. XIII: Mixing and time-dependent rheological behavior of polymer melts containing crosslinked polymeric particles

Autor:	Ronald Salovey, M. Park, J. J. Aklonis, L. Sun
Rok vydání:	1992
Předmět:	chemistry.chemical_classification Materials science Polymers and Plastics Dispersity General Chemistry Polymer Shear rate Shear (sheet metal) chemistry.chemical_compound Rheology chemistry Materials Chemistry Newtonian fluid Polystyrene Methyl methacrylate Composite material
Zdroj:	Polymer Engineering and Science. 32:1418-1425
ISSN:	1548-2634 0032-3888
DOI:	10.1002/pen.760321904
Popis:	The rheological properties of polystyrene (PS) and poly(methyl methacrylate) (PMMA) composites filled with monodisperse sized crosslinked polymeric particles are sensitive to processing history and chemical composition. Particles compatible with the matrix, such as PMMA or copolystyrene-vinylphenol in a PMMA matrix, are randomly dispersed on mixing, yielding (almost) Newtonian fluids. Particles incompatible with the matrix, such as PS or copolystyrene-acetoxystyrene in PMMA, produce composites whose steady shear viscosities depend on shear rate and whose dynamic moduli are elevated at low frequency. Particles in incompatible composites tend to cluster, producing a structure that is destroyed at high shear rates and that reforms on aging at elevated temperatures.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::26890749abac2cd7cb4f7ceff374763f https://doi.org/10.1002/pen.760321904 Zobrazit plný text záznamu Plný text