Relationship between interfacial tension and dispersed-phase particle size in polymer blends. I. PP/EPDM

2002 ◽  
Vol 86 (12) ◽  
pp. 3148-3159 ◽  
Author(s):  
H. Shariatpanahi ◽  
H. Nazokdast ◽  
B. Dabir ◽  
K. Sadaghiani ◽  
M. Hemmati
Keyword(s):  
Particle Size ◽  
Interfacial Tension ◽  
Polymer Blends ◽  
Phase Particle ◽  
Dispersed Phase

Dispersed Phase Particle Size in Polymer Blends: Interfacial and Rheological Effects

2003 ◽  
Vol 35 (2) ◽  
pp. 115-131 ◽  
Author(s):  
H. Shariatpanahi ◽  
H. Nazokdast ◽  
M. Hemmati
Keyword(s):  
Particle Size ◽  
Polymer Blends ◽  
Phase Particle ◽  
Dispersed Phase

Some Parameters of Asphalt Dispersed Phase Particle Size in Two-Stage Heavy Resid Oxidation Process

2019 ◽  
Vol 55 (5) ◽  
pp. 521-529
Author(s):  
N. G. Erdokimora ◽  
N. A. Egoroca ◽  
N. N. Lunen ◽  
L. R. Gaisina ◽  
V. V. Spaskora
Keyword(s):  
Particle Size ◽  
Oxidation Process ◽  
Phase Particle ◽  
Dispersed Phase ◽  
Two Stage

Analysis of Morphology Formation in Elastomer Blends

1977 ◽  
Vol 50 (2) ◽  
pp. 292-300 ◽  
Author(s):  
N. Tokita
Keyword(s):  
Particle Size ◽  
Interfacial Tension ◽  
Volume Fraction ◽  
Influential Factors ◽  
Theoretical Expression ◽  
Dispersed Phase ◽  
The Matrix ◽  
Breaking Energy ◽  
Internal Mixer ◽  
Future Work

Abstract Based on the assumption that an equilibrium particle size of dispersed phase will be reached when the breaking-down rate and the coalescence rate are balanced, a theoretical expression was obtained. The theory showed qualitatively that the equilibrium particle size becomes smaller when (1) the stress field is increased, (2) the interfacial tension between matrix and dispersed phase becomes smaller, and (3) the concentration of dispersed phase decreases. Qualitative verification of the theory was obtained by experimental examination of the NR-EPM blend system. In practice, in order to obtain a small particle size in a short time at above 20% volume fraction, the matching of rheological properties of the matrix and the dispersed phase is desirable. On changing from internal mixer to mill, the temperature became one of the most influential factors that control the particle size. Future work, such as the quantitative value of interfacial tension as a function of temperature, and macroscopic breaking energy measurement, etc., is necessary to confirm the theory quantitatively.

Phase Inversion in Two-Phase Liquid Systems

1992 ◽  
Vol 57 (7) ◽  
pp. 1419-1423
Author(s):  
Jindřich Weiss
Keyword(s):  
Interfacial Tension ◽  
Phase Inversion ◽  
Continuous Phase ◽  
Considerable Effect ◽  
Weak Dependence ◽  
Dispersed Phase ◽  
Two Phase ◽  
Liquid Systems ◽  
Phase Liquid

New data on critical holdups of dispersed phase were measured at which the phase inversion took place. The systems studied differed in the ratio of phase viscosities and interfacial tension. A weak dependence was found of critical holdups on the impeller revolutions and on the material contactor; on the contrary, a considerable effect of viscosity was found out as far as the viscosity of continuous phase exceeded that of dispersed phase.

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