Publication: Effect Of Additives, Polyvinyl Alcohol And Silica On Properties Of Sago Starch Plastic Films
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Date
2022-10
Authors
Zaaba, Nor Fasihah
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Abstract
In this research, studies on properties of sago starch plastic films with the additional of various additives, polyvinyl alcohol and silica were carried out. The additives used in this research were glycerol (GLY), polyethylene glycol (PEG) and glutaraldehyde (GLU). Glycerol and polyethylene glycol were used as plasticizer to brittleness, caused by high intermolecular forces. While, glutaraldehyde was used as crosslinking agent to increase the tensile strength of films by increasing the cross linking structure. Sago starch plastic films were prepared through blending process followed by casting method. From the results obtained, film with the addition of 2 wt% glutaraldehyde shows the highest tensile strength. Besides that, results showed that the glycerol-plasticized films exhibited higher elongation at break and tensile strength than that of polyethylene glycolplasticized films, which mainly due to the better plasticizing effect of glycerol. Degradability test revealed that the weight loss of unplasticized sago starch plastic films was lower than of glycerol- and polyethylene glycol-plasticized sago starch plastic films. The effectiveness of polyvinyl alcohol (PVA) on sago starch plastic films was studied and compared in the presence of glycerol as plasticizing agent and glutaraldehyde as crosslinking agent.
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Keywords
Effect Of Additives , Polyvinyl Alcoho