Abstract
This study seeks to evaluate the flame-retardant characteristics of experimental particleboard manufactured from coconut fibre using modified potato starch as a green binder. The coconut fibre was used as a replacement for the wood as a raw material in particleboard production. The adhesives used in the process were made by modifying potato starch with citric acid and glutardialdehyde. No flame-retardant additive was added during the processing, and this was done to evaluate the flame-retardant potential of the experimental coconut fibre-based particleboards. The limited oxygen index (LOI) test, the bomb calorimetry, the differential scanning calorimetry (DSC) and the dynamic mechanical analysis (DMA) were used to evaluate the thermal properties and flame retardancy rate of such particleboards. The result of the DMA showed that the coconut fibre-based particleboards had good storage modulus with heat. The bomb calorimeter and LOI results also supported the flame-retardant performance of the panels. Based on the evaluations, it could be prescribed that the coconut fibre particleboard made with citric acid modified potato starch (CAMPS) exhibited the best flame-retardant properties.
Highlights
Particleboard is a wood composite product made by applying heat and pressure on the wood particles bonded with the aid of an adhesive
Glutardialdehyde modified potato starch (GMPS) was prepared by slightly altering the method described by Amini, the potato starch in powder form was modified with glutardialdehyde in liquid form in a ratio of 1:2 (w/w)
The limited oxygen index (LOI) test is a method used to evaluate the lowest concentration of oxygen in a mixture with nitrogen that will be enough to aid combustion, and is expressed in volume percentage (%)
Summary
Particleboard is a wood composite product made by applying heat (increased temperature) and pressure on the wood particles (or lignocellulosic materials) bonded with the aid of an adhesive. The wood particles as raw material and the adhesive are mixed homogenously. Materials that are rich in lignin and cellulose (lignocellulosic materials), consisting of agricultural fibres and other non-wood plant fibres, undergo extensive research and development to achieve their optimum use. Various agricultural materials have been studied for their use in particleboard manufacturing include rice straw and coconut fibre, rape straw, corn stalks, coconut husks, oil palm trunk (OPT), sunflower bark and flax shives, banana and coconut fibre.[1,2,3,4,5,6,7]
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