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

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

No	Slope DTA	ΔE^a	a	b	S^b	N^c	α_m^d	T_m(K)	Z^e	ΔS^f	ΔH^g	^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
33	−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

^aΔE:activation energy, ^bS: asymmetry of the peak, ^cn: order of chemical reaction, ^dα_m: decomposed substance fraction at the moment of maximum development of reaction with (T = T_m), ^eZ: collision factor (s^-1), ^fΔS: entropy in KJ/mol, ^gΔH: enthalpy in KJ/mol, ^hR²: coefficient of determination.

ISSN: 2661-801X