Tensile and Water Absorbing Properties of Natural Fibre Reinforced Plastic Composites from Waste Polystyrene and Rice Husk (original) (raw)
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Journal of Vinyl and Additive Technology, 2011
The effect of rice husk powder (RHP) on the tensile properties, swelling, water absorption, and morphology of polypropylene (PP)/[recycled acrylonitrile-butadiene rubber (NBRr)]/RHP composites was studied. Composites containing 0 to 30 parts of RHP per hundred parts of resin were prepared by using a Haake Rheomix Polydrive R 600/610 mixer at 1808C with a rotor speed of 50 rpm. Results indicated that the tensile strength and elongation at break decreased but that the tensile modulus increased with increasing amounts of RHP. Swelling of the PP/NBRr/RHP composites in oil and toluene increased with increasing RHP contents, and the composites exhibited a non-Fickian diffusion with a two stage absorption mechanism. Micrographs acquired by SEM revealed an increasing number of voids and micro-holes on the tensile-fractured surfaces of the composites with increasing amounts of RHP.
Journal of Southwest Jiaotong University, 2021
The possibility of using plastic waste to manufacture hybrid bio-composite materials with the dry husk of Asian rice (Oryza sativa L.) is investigated. The most polluted and unsustainable plastic waste is High-Density Polyethylene (HDPE) due to its single-use, which decreases in quality if it is reused is selected. The mixtures chosen are local natural fiber and easy to find, potentially a preliminary study of a composites building material. Furthermore, to improve the tensile properties of this hybrid bio-composite material, an additional organic filler is used, such as rice husk (Oryza sativa L.) in a combination of 10%, 12%, and 15%. Samples for this study were processed using the hot press methods based on ASTM D882. Tested for tensile strength, modulus young, yield stress, and elongation is carried out to see an increase in the performance of the biocomposite material. The test results show that the best tensile properties are samples with 12% rice husk, resulting in excellent ...
EVALUATION OF MECHANICAL AND WATER ABSORPTION BEHAVIOUR OF COIR AND RICE HUSK REINFORCED COMPOSITES
Coconut coir and rice husk are abundantly available in nature with the very low cost, and rice husk is an agricultural waste, which is thrown away by the industry. The development of natural fiber composites from coconut coir and rice husk powder will reduce agriculture waste and increases its usable value. Composite specimens were prepared according to the ASTM standards with three different weight fractions of fiber, filler, and epoxy (5:15:80, 10:10:80, and 15:5:80) and conducted some mechanical tests such as impact test and hardness test and water absorption behaviour. From the results it was found that, the mechanical properties of untreated coir fiber and rice husk powder composites are more as compared to treated coir fiber and rice husk powder composites, but in the case of water absorption property.
Chemical, morphological, and mechanical analysis of rice husk/post-consumer polyethylene composites
Composites Part A-applied Science and Manufacturing, 2010
Natural fibers are widely used as plastic composite material reinforcements. In this work, composites of postconsumer high-density polyethylene (HDPE) reinforced with sisal fibers were prepared. PE and sisal fibers were chemically modified to improve their compatibilities, try to increase the hydrophobic character of the sisal fiber and hydrophilic character HDPE. Sisal was mercerized with a NaOH solution and acetylated and the PE was oxidized with KMnO4 solution. The chemically modified fibers were characterized by Fourier Transformed Infrared Spectroscopy (FTIR) and 13 C Nuclear Magnetic Resonance Spectroscopy ( 13 C NMR). The composites were prepared by extrusion of modified and unmodified materials containing either 5 or 10 wt% fibers. The morphology of the obtained materials was evaluated by SEM. The fiber chemical modification improves it adhesion with matrix, but not benefit were obtained with HDPE oxidation. Flexural and impact tests demonstrated that the composites prepared with modified sisal fibers and unmodified PE present improved mechanical performance compared to pure PE.
Experimental Investigation of Tensile Property of Rice Husk Reinforced Polymer Composites
IJREAM, 2018
The proposed research work is dedicated in the development of rice husk reinforced polymer composites. Here chemically treated and untreated fibers are mixed separately with matrix material (polyester, vinyl ester & epoxy) and by using hand lay-up technique, these reinforced composite material is moulded in to box shape. The specimens are prepared in different volume percentage of rice husk particulates and by using three different polymer resins (polyester, epoxy and vinyl ester). With this study we come to know the compatibility of rice husk particulates with various polymer resins and significance of reinforcement & matrix in the mechanical property of the composite.
Journal of Reinforced Plastics and Composites, 2007
Thermal and mechanical properties of polylactic acid (PLA) and bagasse carboxymethyl cellulose (CMC B ) composite by adding isosorbide diesters AIP Conference Proceedings 1664, 060006 (2015); https://doi.Abstract Brazil has a remarkable position in the use of renewable energy. The potential of natural resources in Brazil has motivated the use of these renewable resources to make technologies more sustainable. From the large variety of commercially available High Density Polyethylene (HDPE) from different sources, two were chosen for investigation: one produced from sugarcane ethanol, and the other one, a conventional polyethylene, produced from fossil resources. In the preparation of the composites, sponge-gourds also called Luffa cylindrica were selectec. The main application of this product is as bath sponge, whose production generates scraps that are generally burnt. In this work, the composites were prepared by blending the sponge scrap at different proportions (10, 20, 30 and 40% wt/wt) with high density polyethylene (HDPE) from renewable source by extrusion. The melt flow index analysis of the composites was determined and specimens were obtained by injection molding for the assessment of mechanical properties such as tensile (elasticity modulus), flexural and Izod impact strengths. The microstructure of the impact fractured surface of the specimen also was determined. The results showed that the addition of sponge scrap affects positively all the properties studied as compared to HDPE. The results of tensile strength, elasticity modulus and flexural strength were similar to those observed in the literature for composites of HDPE from fossil source. The microstructure corroborates the results of mechanical properties. It was shown that the sponge scrap has potential to be applied as cellulosic filler for renewable polyethylene, providing a totally renewable material with good mechanical properties.
Mechanical Characteristics of Biocomposites Based on Rice Husk Reinforced Recycled Polypropylene
This work aims to investigate the influence of the combination of between agriculture waste, rice husk (RH) and domestic plastic waste, recycled polypropylene (RPP) in producing environmentally friendly materials. In the current investigation, four distinct compounds were selected to identify the most effective combination for achieving the highest result of mechanical properties outcomes. Samples were created with variable RH concentrations (10%, 20%, 30%, and 40% by weight). The results showed that RH-RPP with 20% of RH had the highest mechanical properties. Scanning electron microscopy (SEM) images prove the enhanced mechanical characteristics. In addition, the water absorption and thickness swelling analysis show that RH-RPP composites with 20% RH concentration produce competitive results of 1.14% and 2.06%, respectively. Therefore, the finding from the present study summarized that the combination of RH and RPP with 20% of RH percentage had a great potential in producing competitive eco-friendly material for engineering applications especially for packaging materials. In addition, it is expected to provide an alternative for the management of crop waste and domestic plastic waste. Thus, able to
Applied Mechanics and Materials, 2014
In this study, the physical properties of thermoplastic composites manufactured from linear medium density polyethylene (LMDPE), rice husk (RH) and maleic anhydride polyethylene (MAPE) were evaluated. Composites were manufactured with RH loadings of 15 wt%, 30 wt% and 50 wt% with 1 wt% of MAPE to investigate the effect of RH loading on the physical properties (water absorption and thickness swelling) of the composites. The results show that the water absorption and the corresponding thickness swelling increased with an increase in RH loading. Further manufacturing was carried out with 50 wt% of RH and 1wt%, 3.5 wt% and 6 wt% of MAPE to evaluate the effects of interfacial modification on the physical properties of the composites. The results show that the composites with 3.5 wt% of MAPE had least water absorption and the corresponding thickness swelling, whereas the composites having 1 wt% of MAPE had maximum water absorption and the thickness swelling. It can be concluded from these...