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Table 5 Kinetic parameters of the polyhydrazides 31, 32 and poly (1,3,4-oxadiazole-amide)s 33, 34

From: Synthesis and characterization of thermally stable aromatic polyamides and poly(1,3,4-oxadiazole-amide)s nanoparticles containing pendant substituted bezamides

No Slope DTA ΔEa a b Sb Nc αmd Tm(K) Ze ΔSf ΔHg hR2
31 −25.9 215.5 0.5 0.4 3.5 1.4 0.56 557.2 2.5 −0.24 −135.0 0.99
−16.6 138.4 0.9 0.4 6.4 1.8 0.51 696.0 1.2 −0.25 −174.1 0.99
−13.7 114.2 3.4 1.3 7.4 2.0 0.49 825.2 0.8 −0.25 −210.2 0.99
32 −19.7 164.3 4.3 2.3 5.3 1.7 0.52 853.9 1.1 −0.25 −215.3 0.99
33 −2.4 19.9 0.5 1.6 0.8 0.7 0.69 357.1 0.34 −0.25 −91.1 0.90
−12.9 107.8 4.6 1.4 9.3 2.2 0.47 849.9 0.77 −0.25 −217.3 0.88
34 −19.5 162.8 3.2 1.1 8.3 2.1 0.48 823.0 1.2 −0.25 −207.1 0.94
  1. aΔE:activation energy, bS: asymmetry of the peak, cn: order of chemical reaction, dαm: decomposed substance fraction at the moment of maximum development of reaction with (T = Tm), eZ: collision factor (s-1), fΔS: entropy in KJ/mol, gΔH: enthalpy in KJ/mol, hR2: coefficient of determination.