Table 1.
Composition of film-forming solutions (FFS) and preparation method of starch-chitosan composite films.
| Film composition | Starch ratio (%) | Chitosan ratio (%) | MMT nanoclay (% w/w)* | Ultrasonication time (min) |
|---|---|---|---|---|
| SC-0s-MMT0 | 90 | 10 | 0 | 0 |
| SC-10s-MMT0 | 90 | 10 | 0 | 10 |
| SC-20s-MMT0 | 90 | 10 | 0 | 20 |
| SC-30s-MMT0 | 90 | 10 | 0 | 30 |
| SC-0s-MMT1 | 90 | 10 | 1 | 0 |
| SC-10s-MMT1 | 90 | 10 | 1 | 10 |
| SC-20s-MMT1 | 90 | 10 | 1 | 20 |
| SC-30s-MMT1 | 90 | 10 | 1 | 30 |
Where S: Thermoplastic achira starch, C: Chitosan, MMT: Montmorillonite nanoclay, and s: Ultra sonication process time. *The percentage of added MMT clay was determined based on the total weight of both biopolymers.