Cocontinuous polymer blends: influence of viscosity and elasticity ratios of the constituent polymers on phase inversion

Authors
Steinmann, S Gronski, W Friedrich, C
Citation
S. Steinmann et al., Cocontinuous polymer blends: influence of viscosity and elasticity ratios of the constituent polymers on phase inversion, POLYMER, 42(15), 2001, pp. 6619-6629
Citations number
44
Categorie Soggetti
Organic Chemistry/Polymer Science
Journal title
POLYMER
ISSN journal
00323861 → ACNP
Volume
42
Issue
15
Year of publication
2001
Pages
6619 - 6629
Database
ISI
SICI code
0032-3861(200107)42:15<6619:CPBIOV>2.0.ZU;2-R
Abstract
The morphological properties of melt-mixed blends with cocontinuous phase m orphology composed of poly-(methyl methacrylate) and polystyrene or poly(st yrene-co-acrylonitrile) are studied. By means of digital image analysis of two-dimensional TEM pictures the mean form factor ff(irr) was established a s a classificator. For 11 blend systems phase inversion concentrations were determined in this way. We studied the influence of viscosity and/or elasticity ratios on the phase inversion concentration. Most theories based on viscosity ratio disagree w ith our experimental data. The analysis of corresponding phase inversion co ncentrations based on elasticity ratio determined at a constant shear stres s leads to a simple and good correlation. (C) 2001 Elsevier Science Ltd. AU rights reserved.