Y. Yusmaniar, I. Fadillah, M. Paristiowati, I. Saputra
This study aimed to synthesize chitosan biodegradable films and cellulose microcrystals (CMC) from coconut fibres (Cocos nucifera) with quercetin as a filler. Chitosan (CS) film is mixed with cellulose microcrystals with a composition of 1% w/w, and quercetin bioflavonoids are added with various concentrations (0%;1%;3%;5%;7% w/w) by solution casting method. Adding quercetin to the chitosan-microcrystalline cellulose film is expected to add antioxidant properties. Cellulose microcrystals were isolated from the primary material of coconut fibres by delignification, bleaching which was then hydrolysis by 58% w/w sulfuric acid. Isolation results were characterized by FTIR, XRD and SEM. The results of research for the synthesis of chitosan-microcrystalline cellulose-quercetin films showed the addition of quercetin 7% resulted in tensile strength of 17.21 MPa, biodegradation rate of 1.62 mg/day, antioxidant activity of 79.95%. However, adding 7% quercetin decreases the nature of film development and water vapour permeability, with the optimum quercetin concentration for film development being 1% and water vapour permeability being 3%. © Published under licence by IOP Publishing Ltd.
Chemistry Department, Universitas Negeri Jakarta, Rawamangun Muka Street, East Jakarta, 13220, Indonesia
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