Pengaruh Suhu Vulkanisasi dan Pembebanan Selulosa Mikrokristalin dari Tepung Kulit Singkong dengan Penambahan Alkanolamida sebagai Bahan Penyerasi Alkanolamida pada Pembuatan Film Lateks Karet Alam

Abstract

Cassava peel is one of the industrial waste which contains 37,9% cellulose and has the potential to be hydrolized into microcrystalline cellulose. Microcrystalline cellulose can be an alternative for waste utilization and has the potential as fillers in natural rubber latex films. The study on the effect of drying temperature and filler loading on the mechanical properties of natural rubber latex films filled with microcrystalline cellulose from cassava peel waste powder modified alkanolamide was done in order to obtain the optimum drying temperature and filler loading in producing better mechanical properties such as crosslink density, tensile strength, elongation at break, and tensile modulus. Natural rubber latex films was produced by using coagulant dipping method. This research was started from pre vulcanization process at 70°C with 0 phr, 5 phr, 10 phr, 15 phr, 20 phr and 25 phr filler loading and continued with vulcanization process at 100°C and 120°C for 20 minutes. The result of FTIR characterization shows that microcrystalline cellulose from cassava peel waste powder with alkanolamide is capable of forming a bond with natural rubber latex. The results of mechanical properties shows that higher drying temperature will improve the crosslink reaction which was shown from the mechanical properties at 120°C were higher than the mechanical properties at 100°C. The results of mechanical properties were supported by Scanning Electron Microscopy which showed smooth surface and distributed homogeneously on the morphology of natural rubber latex products with the addition of 10 phr filler loading.