Thermodynamics of the metathesis polymerization of 1,1-dimethyl-1-silacyclopent-3-ene in bulk and the thermodynamic properties of the resulting polymer in the 0-340 K range

For 1,1-dimethyl-1-silacyclopent-3-ene and a linear polymer produced by the metathesis ring-opening polymerization of this monomer, the temperature de pendences of heat capacity were studied by adiabatic vacuum calorimetry in the 5-340 K range. The physical transformations of the reagents were invest igated, and the thermodynamic functions C(p)degrees(T), H degrees(T)- H deg rees(0), SO(T), and GO(T) - H degrees(0) were calculated in the 0-340 K ran ge. The thermodynamic characteristics of the metathesis ring-opening polyme rization of 1,1-dimethyl-1-silacyclopent-3-ene carried out in bulk were est imated for the same temperature range.