MODEL FILLED POLYMERS .14. EFFECT OF MODIFICATIONS OF FILLER COMPOSITION ON RHEOLOGY

Authors
SUN LQ AKLONIS JJ SALOVEY R
Citation
Lq. Sun et al., MODEL FILLED POLYMERS .14. EFFECT OF MODIFICATIONS OF FILLER COMPOSITION ON RHEOLOGY, Polymer engineering and science, 33(20), 1993, pp. 1308-1319
Citations number
85
Categorie Soggetti
Polymer Sciences",Engineering
Journal title
Polymer engineering and science → ACNP
ISSN journal
00323888
Volume
33
Issue
20
Year of publication
1993
Pages
1308 - 1319
Database
ISI
SICI code
0032-3888(1993)33:20<1308:MFP.EO>2.0.ZU;2-F
Abstract
Steady shear viscosity. dynamic moduli and the appearance of fracture surfaces of model composites, consisting of monodisperse crosslinked p olymeric spheres of varied composition in a polymethyl-methacrylate ma trix, depend on the compatibility of filler particle and matrix. After intensive mixing, ''compatible'' systems form uniform and stable disp ersions. Filler particles cluster in incompatible composites producing a highly non-Newtonian response. At 40 w% filler, yield behavior resu lts, with a yield stress of 3 1 00 Pa for polystyrene particles and 19 00 Pa for copolystyrene-acetoxystyrene particles. The flow properties of compositionally complex particles from seeding are determined by pa rticle surface composition.