application of the extended solvation theory to study the interaction of β-cd with interpolymer of peo and paa

thermodynamic study on the interaction of β-cd with poly ethylene oxide and poly acrylic acid was performed by isothermal titration calorimetry at 298k. when β-cd is added to the interpolymer complex, competition is created between host-guest and hydrogen bond. enthalpy of interaction between the β-cd and interpolymer complex was calculated using the extended solvation theory. p=1 shows that willingness of β-cd to interact with both polymers is identical. the positive values of and show that interpolymer complex are stabilized by β-cd . the process is both enthalpy and entropy-driven. the results show that this interaction is exothermic and increases the interpolymer complex stability.