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Enhancement of mechanical properties of waste-sourced biocomposites through peroxide induced crosslinking

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González Sánchez, Carlos and Martínez Aguirre, Alvar and Pérez García, Beatriz and Acosta, Juan and Fonseca Valero, Carmen and Orden Hernández, María Ulagares de la and Sánchez Fernández, Carlos and Martínez Urreaga, Joaquín (2016) Enhancement of mechanical properties of waste-sourced biocomposites through peroxide induced crosslinking. Composites Part. A: applied science and manufacturing, 80 . pp. 285-291. ISSN 1359-835x

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Official URL: http://dx.doi.org/10.1016/j.compositesa.2015.10.032



Abstract

The enhancement of mechanical performance of waste-sourced biocomposites through peroxide induced crosslinking was investigated in order to expand their range of applications. Biocomposites containing 25 to 35 wt% of residual Kraft-pulp cellulose fibers, 1.5 wt% of a selected maleic-anhydride-modified polyethylene coupling agent and a 60/40 (w/w) of recycled agricultural plastic/post-consumer plastic blend were compounded in an extrusion-compounding pilot-plant. Changes in the blend structure due to the presence of the organic peroxide used were studied by spectroscopy and thermal analysis. It was found that the addition of extremely low amounts of peroxide (0.025–0.050 wt%) results in remarkable improvements in stiffness, strength and toughness of biocomposites, without compromising processability. Thus, their tensile strength and energy at break increased up to 89.4% and 138%, respectively, with regard to uncrosslinked biocomposites. Scanning electron microscopy revealed an improvement of the fiber–matrix adhesion due to the treatment with the peroxide.


Item Type:Article
Additional Information:

Received 3 July 2015, Revised 20 October 2015, Accepted 25 October 2015, Available online 30 October 2015

Uncontrolled Keywords:Biocomposite ; Mechanical properties ; Thermal analysis ; Recycling
Subjects:Sciences > Chemistry > Plastics industry
Sciences > Chemistry > Materials
Sciences > Chemistry > Chemistry, Organic
ID Code:41325
Deposited On:17 Feb 2017 12:12
Last Modified:17 Feb 2017 12:26

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