Abstract
In this study, the effect of fibre loading and different surface modification method on the properties of polyvinyl alcohol (PVA)/amla leaf fibre (ALF) were observed. The surface modification of amla leaf fibre was done by alkali treatment (AT) with sodium hydroxide (NaOH) and by graft copolymerization (GC) method using myristic acid (MA) separately. The highest grafting yield was achieved 31.59% at 180 ˚C. The crystallinity index of ALFreduced from 0.79 to 0.17 after graft copolymerization with myristic acid. The composite films were separately prepared from ALF, treated amla leaf fibre (TALF), and grafted amla leaf fibre (GALF) with different composition of loading (5, 10, 15% (w/w)) by solution casting method. Surface modification of fibre showed the enhancement in the mechanical properties of composite film. With 5% loading of ALF, TALF, and GALF the tensile strength of composite films were 32.94, 36.76, and 41.11 MPa, respectively and increased to 34.39, 39.15, and 45.12 MPa with 10% loading in the composite films. However the films containing GALF showed the maximum tensile strength of 45.12 MPa among all the films. The water uptake (%) of the film containing 5% loading of ALF was 134% and it decreased by 47.02% in composite film of GALF. ALF containing composite films showed the faster biodegradation rate as compare to rest of the composite films.
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Shrimal, P.K., Garg, S., Giri, A. (2022). Synthesis of Biodegradable Composite Films from Polyvinyl Alcohol (PVA)/Amla Leaf Fibre (ALF) for Packaging Application. In: Ratan, J.K., Sahu, D., Pandhare, N.N., Bhavanam, A. (eds) Advances in Chemical, Bio and Environmental Engineering. CHEMBIOEN 2021. Environmental Science and Engineering. Springer, Cham. https://doi.org/10.1007/978-3-030-96554-9_41
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