Sugarcane bagasse composites from vegetable oils

Abstract

Sugarcane bagasse composites have been prepared by the free radical polymerization of regular or modified vegetable oils with divinylbenzene and n-butyl methacrylate in the presence of dried, ground sugarcane bagasse. Various cure times and temperatures have been investigated to determine the optimum cure sequence for the new materials. The postcure time has also been varied, and an ideal postcure treatment of 1 h at 180 C at ambient pressure has given the best overall properties. The effect of varying the filler load and resin composition has been assessed by means of tensile tests, dynamic mechanical analysis, thermogravimetric analysis, Soxhlet extraction, followed by proton nuclear magnetic resonance spectroscopic analysis of the extracts, and scanning electron microscopy. It has been observed that the initial washing and drying of the filler influence the filler-resin interaction and impact the final properties of the composites. V C 2012Wiley Periodicals, Inc. J Appl Polym Sci 126: [860][861][862][863][864][865][866][867][868][869] 2012

Rice hull biocomposites, part 2: Effect of the resin composition on the properties of the composite

“…The composites were then removed from the mold and post‐cured in a convection oven for 2 h at 200°C at ambient pressure. An optimal filler load of 70 wt % had been pre‐established in Part 1 of this project and has been kept constant throughout Part 2 24. In all composites produced, the resin has a conjugated vegetable oil content of 50 wt % and the optimal amount of TBPO has been determined to be, in preliminary tests, an extra 5 wt % of the total resin weight.…”

“…The use of rice hulls as a reinforcement for polypropylene composites has been reported recently, and the promising results suggest that it may work as a good filler in the preparation of bio‐based composites 23. The preparation of rice hull composites from CLO has been optimized in Part 1 of this project 24. The effect of cure sequence, pressure, filler load, particle size, and drying of the filler on the composite properties has been studied, and the best conditions for preparation of these rice hull‐reinforced materials have been established 24…”

“…The preparation of rice hull composites from CLO has been optimized in Part 1 of this project 24. The effect of cure sequence, pressure, filler load, particle size, and drying of the filler on the composite properties has been studied, and the best conditions for preparation of these rice hull‐reinforced materials have been established 24…”

Effect of Microwave Cure on the Thermo-Mechanical Properties of Tung Oil-Based/Carbon Nanotube Composites

“…In recent years, a variety of vegetable oil-based polymers with tunable thermal and mechanical properties have been developed by the free radical, or cationic co-polymerization of regular and modified vegetable oils in the presence of divinylbenzene (DVB), styrene (ST), and/or maleic anhydride [3,4]. In such systems, the reactive sites in the triglyceride units are the carbon-carbon double bonds along the fatty acid chains.…”

“…Overall, the reactivity of vegetable oils towards these polymerization processes is significantly higher when the carbon-carbon double bonds are conjugated [5]. Furthermore, the higher the degree of unsaturation of an oil, the higher the crosslink density of its resulting co-polymer, and the better its mechanical properties [3].…”