Utilization of <i>Metroxylan sagu</i> Pith Waste as Biodegradable Filler for Natural Rubber (NR) Latex Films

Abstract

Utilization of agricultural waste toward sustainability has increase a value-added product from a natural resources nowadays. Metroxylan sagu pith waste (MSPW) is a residue from starch extraction process. This research aim to investigate the potential of MSPW as a biodegradable fillers to replace sago starch in Natural Rubber (NR) latex films. The MSPW flour is characterized and compared with sago starch. Results shown MSPW has almost similar properties with sago starch with high content of starch (60%) and moisture (80%). Spectra of MSPW and Sago Starch (SS) are very closed to one another due to the similarity of functional groups. SS has granular shape while MSPW has irregular shape under SEM analysis. The addition of MSPW shown slightly lower tensile properties and tear strength as compared to SS but still within the acceptable value. Thus, MSPW has high potiential to replace SS as biodegradable fillers in NR latex films.

Waste Natural Polymers as Potential Fillers for Biodegradable Latex-Based Composites: A Review

“…A decreasing trend was also noted at the elongation at the break results and the modulus, due to the interparticle integration effect, which decreases the ability of the NR latex films to retain their stiffness. However, the tear strength increased with the addition of MSPW, due to the ability of the particle to deviate cracks, indicating a good cementing mechanism in NR latex films [ 12 ].…”

“…An excessive amount of solid waste has been generated due to increased consumption of NR latex products and their low degradation, which has negatively impacted the sustainability of the environment. The development of biodegradable NR latex composites has been widely investigated in order to reduce the environmental issues caused by rubber waste disposal [ 6 , 9 , 10 , 11 , 12 ].…”