The effects of addition graphene oxide to the mechanical properties of bioplastic based on sago starch (Metroxylon species)

7^th World Congress on Biopolymers and Polymer Chemistry

June 04-06, 2018 Osaka, Japan

Rifati Hanifa

Riau University, Indonesia

Posters & Accepted Abstracts: J Material Sci Eng

Abstract :

Bioplastic or degradable plastic is one of conventional plastic alternative which does not endanger for environmental. Making bioplastic can ease the process of plastic degradation inside the ground. Sago can be one of the base materials for bioplastic because it has high starch content. The general aims of this research are to know the effects of adding graphene oxide and stirring time to the mechanical properties (tensile strength, elongation and modulus young), hydrophobicity, biodegradation and morphology of sago starch bioplastic. Bioplastic was synthesized by intercalation of starch solution, water, filler and plasticizer with combination graphene oxide 0% v/v, 5% v/v, 10% v/v, 15% v/v and combination stirring time of 15 and 50 minutes. The result of this research showed that treatment by addition of graphene oxide and stirring time contributed to the mechanical properties of bioplastic produced. The best result of bioplastic produced was 10% graphene oxide and 50 minutes stirring time with value of tensile strength 4,108 Mpa, elongation 11.528% and modulus young 34,854 Mpa. The result of sago starch bioplastic would degradation 78.9% about eight days in natural way with value of hydrophobicity 68.571%. Micrograph analysis showed that stirring time effect of the filler distribution, which is a bioplastic with stirring time of 15 minutes, made filler distribution spread unequally and it can be known when they still have clots. rifatimahazzahra@yahoo.com