The Thermal Decomposition of the Liquid Hot Water & Alkali Pretreated Cotton Fiber
Abstract
Besides green energy production, exploiting renewable sources in materials production has recently gained interest in being eco-friendly and sustainable. Due to the abundance of agricultural wastes, easy accessibility, eco-friendly and lightweight, the interest in using agricultural wastes for the production of plant fiber has increased. Plant fibers can be used as a reinforcement material for biocomposite. Thermal degradation of the natural fibers has a high significance on the extrusion temperature of thermoplastic composites and the curing temperature of thermosets. Pretreatments of plant fiber improve the thermal degradation of fiber. These research aims are to investigate the thermal analysis of liquid hot water (LHW) and alkali pretreated cotton fibers. Experiments of liquid hot water are carried out by varying temperature (140, 160, and 180 °C), reaction time (30 and 60 min). Cotton fibers are pretreated with NaOH solution (5% in weight) for one h, two h, three h, and four h at room temperature. According to the result of thermogravimetric analysis of LHW and alkali pretreatments, alkali pretreatment (5% w/v, three h) was applied to LHW (180 °C, 60 min) pretreated fibers. The results of liquid hot water and alkali pretreatments, and co-pretreatment were compared with the thermal behavior.
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