Jeltrate Alginate Experiment

CHAPTER 4

RESULT AND DISCUSSION

4.1 Mechanical properties of the Jeltrate alginate with thermoplastic starch of Jackfruit seed

A mechanical property was carried out for this study was tensile strength and elongation at break. The tensile strength is closely related with the additional of Jeltrate alginate, while the elongation at break is closely related with additional of glycerol. Fundamentally, biological polymers show good biocompatibility but their mechanical properties are often poor. Hence, the mechanical properties of the blend of TPS Jackfruit seed on Jeltrate alginate were measured in order to analyse their effect (Zhang and Han 2006).

4.1.1 Tensile Strength

Tensile strength is the amount of stress that a material can undergo before moving from elastic deformation into plastic deformation. If maximum tensile stress occurs at either the yield point or the breaking point, it is designated tensile strength at yield or at break, respectively. High tensile strength is generally required, but deformation values must be adjusted according to the intended application of the samples. Figure 4.1: Tensile strength of modified Jeltrate alginate with Jackfruit seed’s starch at different composition.

Figure 4.1 shows the tensile testing of Jeltrate alginate/TPS of Jackfruit

Different in the starch composition in the bioplastic affects the tensile properties and degradation in the soil due to the result obtained from tensile tests for different composition of starch in fabricated bioplastic and the FTIR spectroscopy observation. Elongation at break for different composition of starch in fabricated bioplastic shows that the samples contain a different concentration of amylose and amylopectin which gives flexibility and stiffness of the samples respectively. The O-H bond and Si-H bond were obviously changes after 8 weeks of