WASTE MORINGA OLEIFERA GUM AS A MULTIFUNCTIONAL ADDITIVE FOR UNFILLED SBR COMPOUND

Abstract

A natural waste (gum) of the drumstick tree, Moringa oleifera, was used for the first time as a sustainable multifunctional additive in an SBR compound. Improved cure rate with lower optimum cure time was obtained by using the gum as an accelerator activator. Tack strength of the M. oleifera gum–SBR compound was superior to both the control and the compound containing commercial phenol–formaldehyde resin at 5 parts per hundred of rubber loading. At different loadings, the gum acted as a plasticizer for the rubber and augmented processing by reducing the viscosity of the compound. The glass transition temperature of the compounds decreased by 2 °C compared with the pristine SBR. Moringa oleifera gum at any loading reduced the die swell of SBR. This study has relevance because the rubber industry is looking for feasible sustainable additives as alternatives to existing petroleum-based compounding ingredients.

Synthesis and properties of biophenol‐furfural based bioresin for curing of styrene butadiene rubber

“…The swelling test was done for 48 h until the specimen reached equilibrium. Flory‐Rehner equation, [ 21 ] as presented in Equation S2, was used to calculate the apparent crosslink density of the compounds.…”

An investigation on Moringa oleifera fruit (drumstick)‐derived cellulose micro and nanofiber reinforced styrene butadiene rubber composites

“…Moringa oleifera is a tropical tree abundant in India, Ethiopia, Asia, Florida, and so forth. [12,13] The hard outer layer of the drumstick, which is thrown away like waste, can be used as a potential source of cellulose micro and nanofibers. The use of renewable resource-based materials and waste management are the two important pillars of sustainable development.…”