Chemical, morphological, and mechanical analysis of rice husk/post-consumer polyethylene composites

Fávaro, Sílvia Luciana; Lopes, Milena Savioli; Neto, Alberto Gonçalves Vieira de Carvalho; Santana, Ricardo Rogério de; Radovanovic, Eduardo

doi:10.1016/j.compositesa.2009.09.021

Cited by 124 publications

(92 citation statements)

References 22 publications

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“…Big particles tend to debond easily and thus result in poor mechanical properties. Similar tensile results were obtained by other researchers [14][15][16]37].…”

Section: Semsupporting

confidence: 81%

“…Arrakhiz et al [14] reported that the tensile strength decreased while tensile modulus increased with increasing particle loading of alfa, coir, and bagasse from 0 to 30 wt%. Fávaro et al [15] studied rice husk/postconsumer 2 International Journal of Polymer Science [16] studied on luffa/epoxy composites that showed similar trend with no significant positive tensile strength with mercerization treatment. Another researcher [17] reported the result of opposite trend by using grewia optiva fiber.…”

Section: Introductionmentioning

confidence: 99%

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Characterization of Alkaline Treatment and Fiber Content on the Physical, Thermal, and Mechanical Properties of Ground Coffee Waste/Oxobiodegradable HDPE Biocomposites

Tan

Kuan

Lee

2017

International Journal of Polymer Science

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Effect of alkali treatment on ground coffee waste/oxobiodegradable HDPE (GCW/oxo-HDPE) composites was evaluated using 5%, 10%, 15%, and 20% volume fraction of GCW. The composites were characterized using structural (Fourier transform infrared spectroscopy (FTIR) and scanning electron microscopy (SEM)), thermal (thermogravimetric analysis (TGA) and differential scanning calorimetry (DSC)), mechanical (tensile and impact test) properties, and water absorption. FTIR spectrum indicated the eradication of lipids, hemicellulose, lignin, and impurities after the treatments lead to an improvement of the filler/matrix interface adhesion. This is confirmed by SEM results. Degree of crystallinity index was increased by 5% after the treatment. Thermal stability for both untreated and treated GCW composites was alike. Optimum tensile result was achieved when using 10% volume fraction with enhancement of 25% for tensile strength and 24% for tensile modulus compared to untreated composite. Specific tensile strength and modulus had improved as the composite has lower density. The highest impact properties were achieved when using 15% volume fraction that lead to an improvement of 6%. Treated GCW composites show better water resistance with 57% improvement compared to the untreated ones. This lightweight and ecofriendly biocomposite has the potential in packaging, internal automotive parts, lightweight furniture, and other composite engineering applications.

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“…Big particles tend to debond easily and thus result in poor mechanical properties. Similar tensile results were obtained by other researchers [14][15][16]37].…”

Section: Semsupporting

confidence: 81%

Section: Introductionmentioning

confidence: 99%

Characterization of Alkaline Treatment and Fiber Content on the Physical, Thermal, and Mechanical Properties of Ground Coffee Waste/Oxobiodegradable HDPE Biocomposites

Tan

Kuan

Lee

2017

International Journal of Polymer Science

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“…The natural fibers, besides pre-senting many advantages in relation to synthetic fibers (low cost, renewability, biodegradability, abundance), could also present better mechanical performance from its composites than the ones obtained with synthetic fibers, for instance, the glass fibers [3][4][5]. Thus, natural fibers, such as fibers of wood, jute, kenaf, hemp, sisal, pineapple, rice husk, etc, have successfully been applied to improve mechanical properties of plastic composites [6][7][8][9][10][11][12]. Among natural fibers, sisal is one of the most used in the world, and Brazil is one of the biggest producers.…”

Section: Introductionmentioning

confidence: 99%

Chemical, morphological and mechanical analysis of sisal fiber-reinforced recycled high-density polyethylene composites

Fávaro¹,

Ganzerli²,

Neto³

et al. 2010

Express Polym. Lett.

140

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Abstract. 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.

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“…These wood flours have the potential to be used as biodegradable reinforcing materials because of their acceptable specific strength and modulus, low cost, low density, biodegradability, easy fibre surface modification, good thermal insulation, the absence of associated health hazards, and the fact that they are renewable resources 9 . Natural wood flours, such as those derived from rubberwood, pine, maple, and oak have been successfully used to improve the mechanical and thermal properties of wood-plastic composites and to reduce their costs 10 .…”

Section: Introductionmentioning

confidence: 99%

Mechanical and thermal properties of oil palm wood sawdust reinforced post-consumer polyethylene composites

Ratanawilai¹,

Thanawattanasirikul²,

Homkhiew³

2012

ScienceAsia

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Post-consumer recycled high-density polyethylene (PCR-HDPE) composites reinforced with 30, 40, and 50% of oil palm wood sawdust (OWS) were prepared by compression moulding. The effects of the OWS content and the moulding temperature on the flexural and compressive properties of the composites were investigated and were found to be highly significant. Increases in the proportion of OWS in the matrix caused a gradual worsening in the mechanical properties of the composites. However, higher moulding temperatures moderately improved the mechanical properties. Dynamic mechanical thermal analysis was used to study the viscoelastic behaviour, and thermogravimetric analysis was used to study the thermal stability of the composites. The storage and loss moduli gradually decreased with increasing temperature and significantly increased with increasing the proportion of OWS in the composites. The thermal stability of the composites slightly dropped with a higher OWS content. These results suggest that PCR-HDPE and OWS can be used to create composite materials with good mechanical and thermal properties.

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Chemical, morphological, and mechanical analysis of rice husk/post-consumer polyethylene composites

Cited by 124 publications

References 22 publications

Characterization of Alkaline Treatment and Fiber Content on the Physical, Thermal, and Mechanical Properties of Ground Coffee Waste/Oxobiodegradable HDPE Biocomposites

Characterization of Alkaline Treatment and Fiber Content on the Physical, Thermal, and Mechanical Properties of Ground Coffee Waste/Oxobiodegradable HDPE Biocomposites

Chemical, morphological and mechanical analysis of sisal fiber-reinforced recycled high-density polyethylene composites

Mechanical and thermal properties of oil palm wood sawdust reinforced post-consumer polyethylene composites

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