ISSN:
1435-1536
Keywords:
Colloids
;
steric stabilization
;
grafted polymer
;
lattice model
Source:
Springer Online Journal Archives 1860-2000
Topics:
Chemistry and Pharmacology
,
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
Notes:
Abstract Contact is made between a one-component macroparticle description of the phase behaviour of sterically stabilized colloidal dispersions recently proposed by Canessa et al. and a lattice model for the interaction of two surfaces bearing grafted polymer due to Scheutjens and Fleer. The former assumes a temperature-dependent effective pairwise interaction between macroparticles, while the latter is an extension of the semi-phenomenological Flory-Huggins theory of polymer solutions to inhomogeneous systems. It is shown that the results from the Scheutjens-Fleer model support the necessary assumption included in the one-component macroparticle approach regarding the temperature dependence of the range of the short-range steric repulsion, and thereby the polymer layer thickness, in colloidal dispersions stabilized by grafted chains.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00652873
Permalink