Netsu Sokutei, 43 (W43), p. 24, (2016)


Photonic Contribution to the Heat Capacity Jump at Tg of Nylon-6 and Nylon-6,6 Glasses

For the ordered part / hole pairs in nylon-6 (N6) and nylon-6,6 (N66) glasses formed by the enthalpy relaxation, the hole energy per molar photon for excited holes at Tg, hh = 3CvphTg (2hh for N66), was equal to the heat of fusion, hu, of each crystal, where Cvph (= 2.701R) is the constant volume heat capacity for photons in holes, R is the gas constant, and the coefficient of 2.701 showed that the photon was the wave packet appeared by Fuorier transformation of the frequency distribution of electric field, basing on the uncertainty principle. The finding of hh = hu (hh = hu/2 for N66) drew that the part of four neighboring methylene sequences in two smallest crystals, corresponding to the divisions of each crystal cell, was the ordered part / hole pair containing one photon. The photonic contribution of ΔCpCpexp (2ΔCpCpexp for N66), 0.84 (0.78 for N66), showed that the end parts of crystalline methylene sequences were in glassy states, where ΔCp (= 44.9 J K-1 mol-1) is the heat capacity jump per molar photon and ΔCpexp is the experimental value of heat capacity jump per molar structural unit at the same glass transition.