AbstractThe helix‐coil transition temperatureTcof poly(γ‐benzylL‐glutamate) in binary solvent mixtures of dichloroacetic acid and 1,4‐dichlorobutane, 1‐chlorooctane, or 1‐chlorododecane have been measured. A treatment is presented with which the transition enthalpy can be calculated from the observed dependence ofTcon solvent composition. Results are compared with previously obtained calorimetric data. The underlying assumptions of the calculation a