THERMODYNAMICS OF THE REACTION BETWEEN POLY-1,1,2-TRICHLOROBUTA-1,3-DIENE AND POLY(ETHYLENE IMINE) TO FORM INTERPOLYMER

Thermodynamic parameters of the interpolymer reaction between poly-1,1 ,2-trichlorobuta-1,3-diene and poly(ethylene imine) giving a polymer-p olymer compound (incorporating the starting components in a molar rati o of 1:2) have been determined by calorimetry. The enthalpy (Delta H-m degrees), entropy (Delta S-m degrees), and Gibbs function (Delta G(m) degrees) for this reaction are negative over the whole temperature ra nge studied. The enthalpy of the reaction in chloroform at 298.15 K is about two times smaller, due to the difference in the enthalpies of d issolution of the starting polymers and the enthalpy of swelling of th e interpolymer in the same solvent. The glass transition temperature o f the interpolymer lies between those of the starting polymer; and coi ncides with the value calculated from the Fox equation. The heat capac ity of the interpolymer is smaller than additive values calculated fro m C-p degrees Of the starting polymers. From the experimentally determ ined C-p degrees for the polymers, the thermodynamic functions C-p deg rees(T), H degrees(T) - H degrees(0), and S degrees(T) were calculated for the 0-330 K temperature range, and their configurational entropie s S-c degrees were estimated.