New polymeric-coupling agent for polypropylene/wood-flour composites

Nachtigall, Sônia Marlí Bohrz; Cerveira, Graziela S.; Rosa, Simone Maria Leal

doi:10.1016/j.polymertesting.2007.03.007

Cited by 220 publications

(119 citation statements)

References 23 publications

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“…The presence of the MAPE coupling agents changed the morphology of the materials by improving the interfacial bonding between the wood fibre and the HDPE matrix. The same results have already been observed [4,11]. The SEM image shows that there is no gap between wood fibre and HDPE matrix, indicating a good interface bonding.…”

Section: Morphologysupporting

confidence: 84%

Study of Wood Plastic Composites elastic behaviour using full field measurements

Mbarek

Robert

Hugot

et al. 2010

EPJ Web of Conferences

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Abstract. In this study, the mechanical properties and microstructure of HDPE/wood fibre composites are investigated. The four-point bending and tensile behaviour of Wood Plastic Composite (WPC) with or without additive are studied by using full-field strain measurements by 3-D Digital Image Correlation (3-D DIC). A non-linear behaviour is shown. The modulus of elasticity (MOE) is calculated as the tangent at zero strain of a Maxwell-Bingham model fitted onto experimental data. Four-point bending tests are analyzed thanks to the spatial standard deviation of the longitudinal strain field to determine the degree of heterogeneity. Cyclic tensile tests have been performed in order to analyze the damage of the material. Moreover, Scanning Electron Microscope (SEM) is used to characterize the morphology of the wood fibre/HDPE matrix interface for specimens with maleic anhydride modified polyethylene additive (MAPE).

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Section: Morphologysupporting

confidence: 84%

Study of Wood Plastic Composites elastic behaviour using full field measurements

Mbarek

Robert

Hugot

et al. 2010

EPJ Web of Conferences

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“…Considering practical applications, composite mechanical properties are of major importance (Nachtigall et al 2007, Punyamurthy et al 2014. The tensile strength is one the most important mechanical properties that helps to selected a composite material for several applications (Punyamurthy et al 2014).…”

Section: Mechanical Propertiesmentioning

confidence: 99%

Mechanical, dynamic mechanical and morphological properties of composites based on recycled polystyrene filled with wood flour wastes

Poletto

2017

Maderas, Cienc. tecnol.

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In this work, the potential for usage recycled polystyrene and wood flour wastes as materials for development wood plastic composites was evaluated. The effects of wood flour loading and coupling agent addition on the mechanical, dynamic mechanical and morphological properties of polystyrene wood flour composites were examined. The results showed that the mechanical properties decreased with the wood flour loading. However, an improvement in composite compatibility was observed when the coupling agent was used resulting in the increase of mechanical and dynamic mechanical properties. A morphological study demonstrates the positive effect in the interfacial adhesion between filler and matrix caused by the coupling agent addition. Based on the findings of this work, both waste materials can be used for development composites with higher performance.

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“…Compatibility in the blends may also contribute to a better the fiber-matrix compatibility (Gardea-Hernandez et al 2008). Treatment of fibers with sodium hydroxide (Mwaikambo and Ansell 1999), the coupling with functional silanes (Nachtigall et al 2007), and functionalization of PP with maleic anhydride (MA) in the presence of an organic peroxide as an initiator, were investigated (Kazayawoko et al 1999;Keener et al 2004). The MA was grafted onto the PP first, and the grafted product (MA-PP) was used as a compatibilizer with a dosage around 3%.…”

Section: Introductionmentioning

confidence: 99%

“…Important parameters in this context are the chemical structure and the amount of the compatibiliser and the addition method. Nachtigall et al (2007) studied the properties of WPC with PP as polymer matrix. Here, PP was functionalized with organosilane or with MA.…”

Section: Introductionmentioning

confidence: 99%

Wood polypropylene composites prepared by thermally modified fibers at two extrusion speeds: mechanical and viscoelastic properties

Askanian¹,

Verney

Commereuc³

et al. 2014

Holzforschung

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Abstract:Composites have been prepared with polypropylene (PP) as a matrix and pine flours, either thermally treated (W tr ) or not (W), as fillers resulting in wood plastic composites (WPCs). The treatment by retification at 280° mainly elevates the hydrophobicity of wood. The WPCs were fabricated with a co-rotating twin-screw extruder with the screw speeds of 500 and 1200 rpm and specimens were prepared by injection molding. Viscoelastic behavior, tensile test and Charpy impact test of W tr PC were compared with PP and WPC. W tr PC has a better dispersion and highest tensile modulus. As expected, a decrease in elongation at break and impact strength was observed for all composites. Processing at 1200 rpm improved by 60% the Young modulus of the WPC compared to 500 rpm, whereas 500 rpm was enough to obtain the highest modulus for W tr PC.

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New polymeric-coupling agent for polypropylene/wood-flour composites

Cited by 220 publications

References 23 publications

Study of Wood Plastic Composites elastic behaviour using full field measurements

Study of Wood Plastic Composites elastic behaviour using full field measurements

Mechanical, dynamic mechanical and morphological properties of composites based on recycled polystyrene filled with wood flour wastes

Wood polypropylene composites prepared by thermally modified fibers at two extrusion speeds: mechanical and viscoelastic properties

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