Physical, Physicochemical, Mechanical, and Structural Characterization of Films Based on Gelatin/Glycerol and Carbon Nanotubes

Table 1

Luminosity factor (), moisture content, and water activity of films from gelatin/glycerol and carbon nanotubes.

Sample	Luminosity	% moisture
GG	84.50 ± 0.40^a	14.38 ± 0.17^a	0.36 ± 0.01^a
GGNTC1	61.10 ± 0.28^b	14.35 ± 0.60^a	0.37 ± 0.01^a
GGNTC2	42.29 ± 0.15^c	14.21 ± 0.09^a	0.37 ± 0.01^a
GGNTC4	39.02 ± 0.63^d	14.53 ± 0.40^a	0.37 ± 0.01^a

Mean values of three measurements ± standard error. GG: gelatin/glycerol/SDS control film; GGNTC1, GGNTC2, and GGNTC4: films with gelatin/glycerol/SDS/CNT. Same letters after entries within each column indicate that there are no significant differences ().