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We propose a compressible associating model to describe liquid-liquid equilibria of dendritic polymer solutions. The model is based on the lattice cluster theory and the hydrogen-bonding model. We examine phase behaviors of dendritic polymer solutions on the effect of compressibility, structure and hydrogen bonding formations among polymer endgroups and solvent molecules. Our results show that the...
We propose a molecular thermodynamic framework to describe vapor-liquid equilibria (VLE) of dendrimer solutions. We examined VLE of dendrimer solutions (polyamidoamine dendrimer/methanol and benzyl dodecyl dendrimer/toluene systems) on the effects of a branched structure and specific interaction formations among endgroups of dendrimer and solvent molecules. The solvent-endgroup specific interaction...
We developed a new model based on the lattice cluster theory to describe phase behaviors of binary hyperbranched polymer solution systems. To account for highly oriented interactions between segments, the proposed model requires an additional parameter (δ /k) related to the energy of the oriented interaction. A thermo-optical analysis (TOA) technique was used to determine cloud-points for the given...
The physical properties of polymer blends and their theoretical consideration based on the double-lattice model (DLM) and a simple rheological equation of state were investigated. Cloud points of poly(ε-caprolactone) (PCL)/polystyrene (PS) blends were determined using the thermooptical analysis (t.o.a.) technique. PCL (M w = 125 000)/PS(M w = 6200) blends exhibit an upper critical...
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