Influence of modified wood fibers on the mechanical properties of wood fiber-reinforced polyethylene

Liao, Bing; Huang, Yuhui; Cong, Guangmin

doi:10.1002/(sici)1097-4628(19971121)66:8<1561::aid-app17>3.0.co;2-6

Cited by 85 publications

(47 citation statements)

References 5 publications

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“…These structures contain reactive functional groups that are capable of bonding to the reactive groups in the matrix polymer. Thus modification of natural fibers is attempted to make the fiber hydrophobic and to improve interfacial adhesion between the fiber and the matrix polymer [57][58][59][60][61][62][63][64][65][66][67][68][69][70][71] . Chemical treatment of natural fibers has been reviewed where it reported 58 that such as de-waxing (de-fatting), de-lignifications, bleaching, acetylation, cynoethylation 72 , and chemical grafting were used for modifying the surface properties of the fibers for enhancing its performance.…”

Section: Modification Of Natural Fibersmentioning

confidence: 99%

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Environment Friendly Composite Materials: Biocomposites and Green Composites

Mitra

2014

DSJ

166

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IntroductIonDevelopment of advanced polymer composite materials having superior mechanical properties opened up new horizons in the engineering field. Advantages such as corrosion resistance, electrical insulation, easy processability at relatively less energy requirement in tooling and assembly costs, higher stiffness and strength, fatigue resistance and lower weight than metals have made polymer composite widely acceptable in structural applications. The so-called advanced composites have replaced metals because of their excellent mechanical properties and low density giving them high specific strength and stiffness 1 . Such weight savings are highly desirable for applications in aerospace to transportation to reduce weight and associated fuel consumption. Another distinct advantage is their ability to be engineered to obtain required properties in different directions by appropriate fiber placing in different layers of the laminated structure.Composite properties depend on the properties of the constituent materials i.e. the fibers and resins used. The strength and stiffness of the composites are directly a function of the reinforcing fiber properties which carry most of the load and their volume content. The resin helps to maintain the relative position of the fibers within the composite and, more importantly, transfers the load from the bottom fibers to the intact fibers. As a result, fiber/resin interfacial properties are also important and have a significant effect on composite properties including toughness and transverse fracture stress. To fabricate high strength composites, all three factors namely fiber properties, resin properties as well as fiber/resin interface characteristics are critical.Currently most of the fibers and resins are derived from petroleum feed stocks and do not degrade for several decades under normal environmental conditions 2 . Composites made from thermosetting resins cannot be reprocessed or recycled, however, a small fraction of these thermosetting composites are crushed into powder used as filler or incinerated to obtain energy in the form of heat, most of them end up in land-fills at the end of their life. In anaerobic conditions, such as those in land -fills, the petroleum based composites may not degrade making that land unavailable for any other use. On the other hand, incineration produces toxic gases and requires expensive scrubbers. Both incineration and dumping in land-fills are environmentally undesirable as well as expensive. In the future, these methods of disposing of composites are expected to get even more expensive as the pollution laws all over the world get stricter and the number of land -fills decline. In addition, at the present rate of consumption, the world petroleum resources are estimated to last for the next 50 years or so 2 . Thus, there is a great interest generated in developing green composites using fully sustainable, biodegradable, environment friendly and annually renewable fibers and resins, particularly those derived from plants 3 . A variet...

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Section: Modification Of Natural Fibersmentioning

confidence: 99%

“…The effect of treatments with other chemicals, for example, sodium alginate and sodium hydroxide, has been reported for coir, banana, pine apple leaf fibers and sisal fibers 70 . The treatment resulted in an increase in de-bonding stress and thus improved the ultimate tensile strength up to 30%.…”

Section: Modification Of Natural Fibersmentioning

confidence: 99%

Environment Friendly Composite Materials: Biocomposites and Green Composites

Mitra

2014

DSJ

166

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“…The rationale behind these efforts is that wood fibers offer many advantages over the most commonly used inorganic materials including a lower cost on a volumetric basis, higher specific strength and modulus, flexibility during processing, etc. [1][2][3][4]6,9,10]. Despite these advantages, the strength properties of plastic-wood-fiber composites are inferior compared to neat plastics as a result of poor interfacial adhesion due to the incompatibility between hydrophilic wood fibers and hydrophobic plastics [1][2][3][4][5][6][7][8].…”

Section: Introduction Dmentioning

confidence: 99%

“…Substantial research has been carried out on the surface modification of wood fiber using coupling agents to improve the strength properties of plastic-wood-fiber composites [1][2][3][4][5][6][7][8]. Among them, the influence of surface treatment of wood flour with maleated polypropylene (MAPP) on the strength properties of polypropylene (PP)-wood-fiber composites has received particular attention [3][4][5][6].…”

Section: Introduction Dmentioning

confidence: 99%

Effectiveness of Maleated and Acrylic Acid-Functionalized Polyolefin Coupling Agents for HDPE-Wood-Flour Composites

Matuana

2003

Journal of Thermoplastic Composite Materials

115

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The performance of fiber reinforced thermoplastic composites strongly depends on solid fiber-matrix adhesion to allow stress transfer between the phases. Fiber surface modification with coupling agents is generally needed to induce bond formation between the fiber and the polymer. This study investigated the effects of coupling agent's functional monomer (acrylic acid vs. maleic anhydride) and base resin (polyethylene (PE) vs. polypropylene (PP)) types on the tensile and flexural properties of high-density polyethylene (HDPE)-wood-flour composites. The interfacial adhesion between wood flour and HDPE matrix was examined using environmental scanning electron microscope. The experimental results indicate that the types of functional monomer and base resin are important factors determining the effectiveness of functionalized coupling agents for HDPEwood-flour composites. Maleic anhydride-functionalized polyolefins perform better than acrylic acid counterparts whereas PE-based maleated coupling agents are more effective than PP-based counterparts in improving the strength properties of HDPE-wood-flour composites.

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“…Both polymer matrices and natural filler systems have been widely investigated [6][7][8][9][10]. As a matter of fact, Oksman and Lindberg [11] as well as the team of Liao [12] studied the mechanical behavior of composites based on polyethylene and wood flour samples [11,12]. On the other hand, Zaini et al [13], Nitz et al [14], and Kaci et al [15,16] investigated the mechanical behavior of polypropylene/wood flour composites.…”

Section: Introductionmentioning

confidence: 99%

Thermal, dielectric and mechanical study of poly(vinyl chloride)/olive pomace composites

Djidjelli¹,

Benachour²,

Boukerrou³

et al. 2007

Express Polym. Lett.

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Abstract.Composites from PVC and chemically treated olive pomace have been prepared. The effect of the incorporation of virgin and benzylated olive pomace in the poly(vinyl chloride) matrix on dielectric, mechanical and thermal stability properties, of /olive pomace composites was studied. The mechanical properties of the benzylated composites were improved. Furthermore, the thermal characterization of the different samples carried out by thermogravimetric analysis revealed an increase in the onset temperatures of decomposition for the treated composites. The dielectric investigation indicated that the samples containing olive pomace treated with the benzyl chloride can be used in electrical applications as insulators.

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Influence of modified wood fibers on the mechanical properties of wood fiber-reinforced polyethylene

Cited by 85 publications

References 5 publications

Environment Friendly Composite Materials: Biocomposites and Green Composites

Environment Friendly Composite Materials: Biocomposites and Green Composites

Effectiveness of Maleated and Acrylic Acid-Functionalized Polyolefin Coupling Agents for HDPE-Wood-Flour Composites

Thermal, dielectric and mechanical study of poly(vinyl chloride)/olive pomace composites

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