Pressure Perturbatin Calorimetry of Poly(ethylene)Glycol solutions in water

The physico-chemical properties of poly(ethylene) glycol solutions in water have been studied with use of pressure perturbation calorimetry. The three PEGs of average molecular mass (M r) 6000, 10000, 20000 were used. The concentration of polymers was changed in the range 0-30% mass per volume (w/v%). On the basic of VP-DSC measurements with use of PPC technique the dependencies of thermal expansion coefficient (?) and excess specific heat capacity (C p,exc) on temperature were determinated for PEG-water solutions. © 2006 Akadémiai Kiadó.