Effect of Keratin Waste on Poly(ε-Caprolactone) Films: Structural Characterization, Thermal Properties, and Keratinocytes Viability and Proliferation Studies

Table 1

Thermal behavior of PCL, KE, PCL/KE10, PCL/KE15, PCL/KE25, and PCL/KE30 films analyzed by TG-DSC analyses.

Sample	<200°C			200–450°C			450–600°C			TWL	RM
	ΔW (%)	DTG (°C)	DSC (°C)	ΔW (%)	DTG (°C)	DSC (°C)	ΔW (%)	DTG (°C)	DSC (°C)
PCL	0.2	—	63.8^a	98.4	338.3	343.4^a	0.3	—	—	98.9	1.1
KE	4.2	68.5–145.5	65.3^a	58.9	281.5–330.5	223.9^b–339.6^a	6.8	517.0	519.4^a	69.9	30.1
PCL/KE10	1.1	—	59.1^a	96.7	340.6–378.9	342.6^a–352.1^a–378.9^a	1.7	—	492.1^a	99.4	0.6
PCL/KE15	0.8	—	63.3^a	90.1	350.3–391.8	354.7^a–394.3^a	1.8	—	520.2^a	92.7	7.3
PCL/KE25	1.4	—	59.3^a	93.7	345.5–386.2	345.0^a–362.0^a–387.5^a	2.6	—	498.6^a	97.7	2.4
PCL/KE30	1.1	—	59.1^a	91.0	346.2–388.4	355.2^a–391.7^a	2.1	—	491.3^a	94.1	5.9

ΔW = weight loss (by TG); TWL = total weight loss; RM = residual mass. ^aEndothermic reaction; ^bexothermic reaction.