2.5.10. Biodegradability

Soil burial degradation test was carried out to evaluate the biodegradability of the films. Small pieces of films (dimensions 2 × 7 cm) were buried in natural soil at a depth of 10 cm (23 ± 2 ◦C and 50 ± 5% RH). After 10 days, the samples were collected, washed several times with distilled water and then allowed to dry in an oven at 50 ◦C for 24 h [25]. The weight loss was monitored and the FTIR spectra of the degraded films were also recorded as described above.
