From: Effect of carboxymethyl cellulose concentration on physical properties of biodegradable cassava starch-based films
Films
Composition (g/100 ml water)
starch
CMC
glycerol
Cassava starch
5
0
1.5
10%CMC
4.5
0.5
20%CMC
4
1
30%CMC
3.5
40%CMC
3
2