Treated Tropical Wood Sawdust-Polypropylene Polymer Composite: Mechanical and Morphological Study

Idrus, M. A. M. Mohd; Hamdan, Sinin; Rahman, Md. Rezaur; Islam, Md. Sakinul

doi:10.4236/jbnb.2011.24053

Cited by 52 publications

(41 citation statements)

References 20 publications

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“…With the increasing of wood sawdust content in the composite, the number of free –OH groups derived from cellulose and hemicellulose, increases also. These free –OH or hydroxyl groups come in contact with water and form hydrogen bonds, which result in a weight gain in the composites [51]. However, the water uptake has decreased with increasing of absorbed dose, as shown in Figure 17.…”

Section: Resultsmentioning

confidence: 99%

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Wood Sawdust/Natural Rubber Ecocomposites Cross-Linked by Electron Beam Irradiation

et al. 2016

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The obtaining and characterization of some polymeric eco-composites based on wood sawdust and natural rubber is presented. The natural rubber was cross-linked using the electron beam irradiation. The irradiation doses were of 75, 150, 300 and 600 kGy and the concentrations of wood sawdust were of 10 and 20 phr, respectively. As a result of wood sawdust adding, the physical and mechanical properties such as hardness, modulus at 100% elongation and tensile strength, showed significant improvements. The presence of wood sawdust fibers has a reinforcing effect on natural rubber, similar or better than of mineral fillers. An increase in the irradiation dose leads to the increasing of cross-link density, which is reflected in the improvement of hardness, modulus at 100% elongation and tensile strength of blends. The cross-linking rates, appreciated using the Flory-Rehner equation, have increased with the amount of wood sawdust in blends and with the irradiation dose. Even if the gel fraction values have varied irregularly with the amount of wood sawdust and irradiation dose it was over 90% for all blends, except for the samples without wood sawdust irradiated with 75 kGy. The water uptake increased with increasing of fiber content and decreased with the irradiation dose.

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Section: Resultsmentioning

confidence: 99%

“…However, the water uptake has decreased with increasing of absorbed dose, as shown in Figure 17. An explanation may be connected with the removal of some –OH groups inside the cellulose, which results in a reduction of free –OH groups inside the entire composite, so a low availability to absorb water [51]. …”

Section: Resultsmentioning

confidence: 99%

Wood Sawdust/Natural Rubber Ecocomposites Cross-Linked by Electron Beam Irradiation

et al. 2016

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“…[3][4][5][6][7] But, only few reports are available on the properties of polymer composites filled with biowaste particles. [8][9][10][11] In this investigation, an attempt was made to study the mechanical and wear behavior of PF composites reinforced with biowaste particles (WD and CP). Mechanical properties of wood-dust-particle-reinforced PF composites were evaluated based on the content of coir pith.…”

Section: Introductionmentioning

confidence: 99%

Effects of an addition of coir-pith particles on the mechanical properties and erosive-wear behavior of a wood-dust-particle-reinforced phenol formaldehyde composite

Jose¹,

Athijayamani²,

Ramanathan³

et al. 2017

Mater. Tehnol.

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Several attempts were made to investigate the effects of various process parameters on the mechanical properties and wear behavior of synthetic and natural cellulosic fibers and also particle-reinforced polymer composites. However, very few studies were carried out on the effects of various process parameters on the mechanical and wear behavior of phenol formaldehyde (PF) composites reinforced with natural cellulosic fibers and particles. Therefore, in the present study, an attempt was made to observe the effects of various process parameters on the mechanical and wear behavior of wood-dust (WD) and coir-pith (CP) particle-reinforced resole-type PF composites. First, the mechanical properties of a WD/PF composite were studied based on the content of CP particles. Then, the erosive-wear behavior of the WD/PF composite was studied with respect to five different parameters such particle content, erodent size, impact velocity, impingement angle, and standoff distance. The erosive experiments were carried out for five different parameters based on the Taguchi experimental design (L27). The results show that the mechanical properties of the WD/PF composite increase with an addition of CP particles. The increment in the composite modulus was higher than that of the composite strength. The erosive test results indicate that the erosion-wear rate is affected by the particle content, impingement angle, erodent size and impact velocity. Brittle-erosion behavior was identified on the surface of the composite with a heavy erosive wear occurring at a 60°impingement angle. Keywords: biowaste particles, phenol formaldehyde, composites, mechanical properties, erosive-wear resistance, Taguchi method Izvedenih je bilo`e kar nekaj poizkusov v zvezi z u~inki razli~nih procesnih parametrov na mehanske lastnosti in obrabo polimernih kompozitov oja~anih s sinteti~nimi in naravnimi celuloznimi vlakni in/ali delci. Toda zelo malo raziskav je bilo izvedenih glede vpliva razli~nih procesnih parametrov na mehanske lastnosti in obrabo fenolformaldehidnih (angl. PF) kompozitov, oja~anih z naravnimi celuloznimi vlakni in delci. Tako je v pri~ujo~em delu predstavljen vpliv razli~nih procesnih parametrov na mehanske lastnosti in obrabo PF kompozitov, ki so bili oja~ani z delci lesnega prahu (angl. WD) in delci kokosa (angl. CP). Te vrste kompozitov se uporabljajo za izdelavo podplatov~evljev. Najprej so bile dolo~ene mehanske lastnosti WD/PF kompozitov glede na vsebnost CP delcev. Sledili so preizkusi in analize erozijske obrabe WD/PF kompozitov glede na vsebnost (koli~ino) delcev v kompozitu, velikost, hitrost in razdaljo u~inkovanja erozijskega sredsta ter njegov vpadni kot. Preizkusi so temeljili na analizi s Taguchijevo metodo (L27) s petimi razli~nimi parametri. Rezultati so pokazali, da se mehanske lastnosti WD/PF kompozitov izbolj{ujejo z dodajanjem CP delcev. Povi{anje modula kompozitov je bilo ve~je od pove~anja trdnosti kompozita. Erozijski testi ka`ejo, da je hitrost erozijske obrabe posledica vseh procesnih parametrov, to je: vsebnos...

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“…3,14,15 In fact, many reports have indicated the problem of increased water absorption of lignocellulosic materials containing polymer composites particularly with increasing amounts of lignocellulosics as well as method of processing. [13][14][15]22,28,32,33,39,41,44,[50][51][52][53][54][55][56][57][58][59][60][61][62][63] This problem lowers the mechanical properties. However, certain methods such as surface modifications of lignocellulosics or additions of some chemicals to the matrix have been successfully attempted to overcome this problem.…”

Section: Introductionmentioning

confidence: 99%

“…67 Depending on the company, only 30 to 60% of the materials from the trees are transformed into wood products. 32 Therefore, residues from these trees, such as sawdust, are a largely untapped resource. Based on the above background, the aim of this study was (i) to prepare MAPP via reactive extrusion with different amounts of dicumyl peroxide and benzoyl peroxide in the presence of maleic anhydride (MAH); (ii) to evaluate its properties; and (iii) to compare performance of indigenous MAPP prepared in this study with those prepared using commercial MAPP.…”

Section: Introductionmentioning

confidence: 99%

Effect of domestic compatabilizer on the performance of polypropylene-sawdust composites

Santos

Trombetta²,

Flores-Sahagun

et al. 2015

Journal of Composite Materials

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Greater concern for environmental safety and fuel economy has increased interest in the use of renewable resources for development of new materials. Wood-plastic composites, made of recycled plastic and wood wastes, are very attractive in this respect, making this one of the most dynamic areas of new developments in the plastics industry in the past decade. This paper presents the preparation and characterization of polypropylene-sawdust composites by compression molding using maleated polypropylene (MAPP) produced in Brazil by reactive extrusion, with different amounts of two types of peroxides. The MAPP was characterized for thermal properties, melt flow index, and chemical structure, while the composites containing both uncoated and MAPP-coated sawdust were characterized for mechanical properties to understand the effect of coating as well as to compare these properties with those of composites prepared with commercial MAPP. The MAPP was efficient as a compatabilizer for polypropylene/sawdust composites. Better impact and tensile properties were observed in composites prepared with medium and high melt flow index compatibilizer concentrations, respectively.

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Treated Tropical Wood Sawdust-Polypropylene Polymer Composite: Mechanical and Morphological Study

Abstract: ABSTRACT

Cited by 52 publications

References 20 publications

Wood Sawdust/Natural Rubber Ecocomposites Cross-Linked by Electron Beam Irradiation

Wood Sawdust/Natural Rubber Ecocomposites Cross-Linked by Electron Beam Irradiation

Effects of an addition of coir-pith particles on the mechanical properties and erosive-wear behavior of a wood-dust-particle-reinforced phenol formaldehyde composite

Effect of domestic compatabilizer on the performance of polypropylene-sawdust composites

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