Order parameter and interfacial tension of a colloid-polymer system
The order parameter and interfacial tension of a colloid-polymer system consisting of grafted silica particles in cyclohexane in the presence of the soluble polymer polydimethylsiloxane are determined experimentally in the entire liquid-liquid coexistence region, from the liquid-solid boundary to the critical point. The renormalized critical exponents of the order parameter and interfacial tension are found to be, respectively, beta(*)=0.371+/-0.026 and &mgr;(*)=1. 30+/-0.08, and are discussed in the light of theoretical predictions.
Chen
BH
Department of Chemical Engineering, Rice University, 6100 South Main Street, Houston, Texas 77005, USA.
Payandeh
B
Robert
M