Evaluation of Sterilisation Techniques for Regenerative Medicine Scaffolds Fabricated with Polyurethane Nonbiodegradable and Bioabsorbable Nanocomposite Materials

Table 1

Mechanical Properties of POSS-PCU and POSS-PCL after sterilisation processes. Young’s modulus, maximum stress, elongation at break, and thickness of control POSS-PCL and POSS-PCU and samples subjected to ethanol, bleach (SDIC), plasma, ethylene oxide, UV radiation, antibiotic/antimycotic treatment, and gamma irradiation.

Sterilisation Method		Control	Bleach (SDIC)	Ethanol	Gamma	Ethylene Oxide	UV	Antibiotic/Antimycotic	Plasma	Autoclaving
Young’s Modulus (MPa)	POSS-PCL	0.18 ± 0.0	0.29 ± 0.02	0.20 ± 0.02	0.32 ± 0.04	0.40 ± 0.11	0.35 ± 0.02	0.25 ± 0.03	0.30 ± 0.05	N/A
	POSS-PCU	0.55 ± 0.04	0.57 ± 0.02	0.56 ± 0.02	0.56 ± 0.04	0.55 ± 0.02	0.55 ± 0.02	0.53 ± 0.01	0.55 ± 0.03	0.54 ± 0.02
Maximum Stress (MPa)	POSS-PCL	0.56 ± 0.08	0.61 ± 0.10	0.31 ± 0.11	1.17 ± 0.15	1.71 ± 0.19	1.45 ± 0.04	1.10 ± 0.14	0.80 ± 0.26	N/A
	POSS-PCU	0.83 ± 0.03	0.82 ± 0.06	0.85 ± 0.03	0.83 ± 0.01	0.84 ± 0.01	0.83 ± 0.01	0.81 ± 0.12	0.83 ± 0.02	0.82 ± 0.04
Elongation at break (%)	POSS-PCL	589.6 ± 26.2	549.7 ± 68	293.0 ± 61	462.2 ± 16	471.6 ± 39	387.5 ± 22	469.5 ± 11	500.1 ± 30	N/A
	POSS-PCU	283.3 ± 9.57	273.6 ± 10.01	279.2 ± 1.74	288.0 ± 3.05	288.6 ± 1.46	269.3 ± 8.55	273.8 ± 9.01	281.1 ± 4.12	280.5 ± 7.88
Thickness (mm)	POSS-PCL	2.0 ± 0	1.43 ± 0.15	1.525 ± 0.13	1.6 ± 0.22	1.2 ± 0.25	1.38 ± 0.05	1.55 ± 0.17	2.433 ± 0.12	N/A
	POSS-PCU	0.75 ± 0.04	0.77 ± 0.02	0.84 ± 0.02	0.77 ± 0.05	0.76 ± 0.02	0.77 ± 0.02	0.75 ± 0.03	0.76 ± 0.02	0.74 ± 0.06