Composites Made from Lignocellulosics and Thermoset Polymers

Composites made from a stryrene/unsaturated polyester thermoset matrix and woodflours from different wood species have been prepared and tested. Pine (Pino Eliottis), eucaliptus (Eucaliptus Saligna) and marmelero (Ruprechia Laxiflora), a softwood and two semihard woods respectively, were selected fo...

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Published inMolecular crystals and liquid crystals science and technology. Section A, Molecular crystals and liquid crystals Vol. 353; no. 1; pp. 95 - 108
Main Authors Aranguren, Mirta I., Marcovich, Norma E., Reboredo, Maria M.
Format Journal Article Conference Proceeding
LanguageEnglish
Published Philadelphia, PA Taylor & Francis Group 01.12.2000
Gordon and Breach
Subjects
Applied sciences
chemical modifications
Composites
Exact sciences and technology
Forms of application and semi-finished materials
lignocellulosics
mechanical properties
Polymer industry, paints, wood
Technology of polymers
thermosets
woodflours
Ester polymer
Mechanical properties
Lignocellulosics
Dispersion reinforced material
Compressive strength
Organic anhydride
Experimental study
Property processing relationship
Fumarate polymer
Composite material
Thermosetting resin
Surface treatment
Bending strength
Chemical modification
Wood by product
Unsaturated polymer
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Summary:Composites made from a stryrene/unsaturated polyester thermoset matrix and woodflours from different wood species have been prepared and tested. Pine (Pino Eliottis), eucaliptus (Eucaliptus Saligna) and marmelero (Ruprechia Laxiflora), a softwood and two semihard woods respectively, were selected for this study because of the availability and local abundance. The particles were used untreated and chemically modified with maleic anhydride (MAN). Thermogravimetric analysis and analytical techniques were used in the characterization of untreated and treated flours. Dispersion of the fibrous particles, as well as maximum filler concentration (accompanied by complete wetting of the wood fibers) was dependent on the treatment and on the wood species utilized. Bending and compression tests indicated some improvement in the performance of the composites, if the woodflour was previously esterified. Scanning electron microscopy (SEM) allowed to observe changes in the fracture surfaces due to MAN treatment of the fibers.
ISSN:1058-725X
DOI:10.1080/10587250008025651