Vv. Guzeev et al., EFFECT OF THERMODYNAMIC AFFINITY BETWEEN POLYMER AND PLASTICIZER ON THE STRUCTURE AND RHEOLOGICAL PROPERTIES OF PLASTISOLS, Colloid journal of the Russian Academy of Sciences, 55(1), 1993, pp. 31-35
We have studied the structure and properties of plastisols: suspension
s of polyvinylchloride or methylmethacrylate copolymers in plasticizer
s. The investigated properties are comparable with the Gibbs energies
of mixing (DELTAG) for each polymer-plasticizer pair. The values of DE
LTAG were obtained by calculation using Flory-Huggins and Hildebrand t
heory (DELTAG(c)). The values of DELTAG(c) are compared with the exper
imental values of the Gibbs energy of mixing DELTAG(e), determined by
the method of static sorption of vapors of a solvent common to the pol
ymer and the plasticizer. The calculated values can be used (to a firs
t approximation) for matching plasticizers to the polymer. We obtain a
series of new rules supporting the existence of a close connection be
tween the thermodynamic affinity of the components and the properties
of plastisols.