... show beginnings of split of the melting peaks, which grow with the increase of the load and temperature. Thermodynamics – Systems in Equilibrium and Non -Equilibrium 90relaxation and phase ... temperatures, depending on the tensile stress values (here L0 and L are the initial and final fibers length respectively). Thermodynamics – Systems in Equilibrium and Non -Equilibrium 102 ... of the strain stress in the crystallization of the studied PET fibers. Thermodynamics – Systems in Equilibrium and Non -Equilibrium 96 0,0 0,5 1,0 1,5 2,0 2,5 3,001234 26 252423222120191817 16 151413121110987 6 54321(L-L0)/L0Stress,...