Biodegradable Films Based on Gelatin and Montmorillonite Produced by Spreading

Table 2

Tensile strength (TS), Young’s modulus (YM), elongation at break (EB), puncture force (PF), and puncture deformation (PD) for films prepared with 5 g of gelatin/100 g of NFS and different MMT concentrations and stored under 58% of RH.

MMT; (g of montmorillonite/100 g of gelatin)	TS (MPa)	YM (MPa/%)	EB (%)	PF (N)	PD (%)
0	23.5 ± 3.1^a	2.1 ± 0.6^a	48.7 ± 5.5^a	15.5 ± 1.1^a	5.3 ± 0.5^a
5	31.7 ± 1.8^b	5.5 ± 1.0^b	40.4 ± 3.4^b	15.7 ± 0.8^a	7.3 ± 0.6^b
10	31.1 ± 1.9^b	6.6 ± 0.2^c	38.0 ± 3.4^b	15.6 ± 0.8^a	5.8 ± 1.1^a

Values with different characters differ significantly in the same column ().