The effect of crosslinking agent on protein based bioplastic from fish waste
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Date
2019-07
Authors
Thng, Chin Sheng
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Abstract
This research was carried out to study the effect of two different crosslinking agent glutaraldehyde (GA) and glyoxal (GLY) with different composition (2, 4, 6 and 8pph) on the mechanical, thermal and water absorption properties of fish waste bioplastic. The fish waste bioplastic was produced by using heated two roll mills and compression molding. Fish waste bioplastic was characterize by using mechanical testing, Thermogravimetric Analysis (TGA), Differential Scaning Calorimetry (DSC), X-Ray Difraction (XRD), Fourier Transform Infrared Spectroscopy (FTIR) and water absorption test. The results showed that addition of crosslinking agent into the fish waste bioplastic improved the mechanical and thermal properties of the fish waste bioplastic. Moreover, the mechanical and thermal properties of fish waste bioplastic crosslinked with GA was better than fish waste bioplastic crosslinked with GLY. GA was showed better performance than GLY when incorporated with fish bioplastic as the tensile strength of fish waste bioplastic crosslinked with GA improve from 0.1225MPa to 0.2133MPa when 8pph (composition) was added while tensile strength of fish waste bioplastic crosslinked with GLY was 0.1985MPa which is lower than fish waste bioplastic crosslinked with GA. Furthermore, addition of crosslink into the fish waste bioplastic also reduce the water absorption properties of fish waste bioplastic due to formation of crosslink which reduce the free volume space. From the research, it was found that the composition of crosslinking agent have more potential to enchance the mechanical and thermal stability as well as water absorption properies of fish waste bioplastic compare to type of crosslinking agent (Glutaraldehyde and Glyoxal).