Figure 3.

Tensile properties of bioplastic films are a function of the concentration of plasticiser. Representative stress–strain curves for films with 0% (A), 20% (B) and 50% (C) glycerol show that with increasing amounts of plasticiser, the ultimate tensile strength (UTS) decreases, while the strain at break increases. (D) UTS of bioplastic films as a function of concentration of glycerol. With increasing amounts of the plasticiser, the UTS of the films decreased. Further tests were performed on agarose –20% glycerol films for which they had appreciable strength while also having flexibility and suppleness. Multiple samples for each set were tested where number of samples (n = 5). Error bar represents standard error of mean.