Table 3. Optimized Reaction Conditions for Complete Microwave-Assisted, Acid-Catalyzed Hydrolysis of Aliphatic PAs Together with Yields, T_m, and Purities of Recovered Monomers and Reinforcement Additives^a.

			MW conditions		recovered monomer/reinforcement additive
entry	sample		T (°C)	t (min)		yield (%)	Tm (°C)b	purity (%)c
1	PA 66	1.25	200	10	AA	90	152.6–153.3	100.6 ± 0.2
					HMDA	86		100.1 ± 0.3
2	PA 66-GF35	1.25	200	15	AA	83	152.3–152.9	100.7 ± 0.2
					HMDA	81		100.1 ± 0.4
					GF	97
3	PA 11	2.5	200	10	11-AUDAxHCl	93	147.3–148.7	100.1 ± 0.2
4	PA 11-GF30	2.5	200	15	11-AUDAxHCl	71	147.0–148.6	99.8 ± 0.1
					GF	97
5	PA 11-CF30	2.5	200	20	11-AUDAxHCl	72	146.7–147.0	99.3 ± 0.2
					CF	99
6	PA 12	2.5	200	10	12-ADDAxHCl	97	160.9–163.5	99.9 ± 0.5
7	PA 12-GF50	5	200	15	12-ADDAxHCl	77	159.6–162.5	97.1 ± 0.3
					GF	97
8	PA 1010	2.5	200	17	SA	89	133.1–134.0	100.4 ± 0.8
					1,10-DDA	78	60.4–61.0	100.0 ± 0.2

^aVolume of HCl solution was 8 mL in all experiments.

^bT_m of commercially available monomers: AA: 152.4–153.3 °C; SA: 133.1–134.0 °C; 1,10-DDA: 61.2–62.1 °C; 11-AUDAxHCl: 146.3–149.7 °C; 12-ADDAxHCl: 160.7–163.5 °C.

^cHPLC purity was determined comparatively to commercial monomers.