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  • 1.
    Delgado-Aguilar, Marc
    et al.
    Univ Girona, Dept Chem Engn, LEPAMAP Grp, Girona 17003, Spain..
    Tarres, Quim
    Univ Girona, Dept Chem Engn, LEPAMAP Grp, Girona 17003, Spain..
    Marques, Maria de Fatima V.
    Univ Fed Rio de Janeiro, Inst Macromol, BR-21941598 Rio De Janeiro, Brazil..
    Espinach, Francesc X.
    Univ Girona, Dept Org, Business, Design Dev & Prod Innovat, Girona 17003, Spain..
    Julian, Fernando
    Univ Girona, Dept Org, Business, Design Dev & Prod Innovat, Girona 17003, Spain..
    Mutje, Pere
    Univ Girona, Dept Chem Engn, LEPAMAP Grp, Girona 17003, Spain..
    Vilaseca, Fabiola
    KTH, School of Engineering Sciences in Chemistry, Biotechnology and Health (CBH), Fibre- and Polymer Technology.
    Explorative Study on the Use of Curaua Reinforced Polypropylene Composites for the Automotive Industry2019In: Materials, ISSN 1996-1944, E-ISSN 1996-1944, Vol. 12, no 24, article id 4185Article in journal (Refereed)
    Abstract [en]

    The automotive industry is under a growing volume of regulations regarding environmental impact and component recycling. Nowadays, glass fiber-based composites are commodities in the automotive industry, but show limitations when recycled. Thus, attention is being devoted to alternative reinforcements like natural fibers. Curaua (Curacao, Ananas erectifolius) is reported in the literature as a promising source of natural fiber prone to be used as composite reinforcement. Nonetheless, one important challenge is to obtain properly dispersed materials, especially when the percentages of reinforcements are higher than 30 wt %. In this work, composite materials with curaua fiber contents ranging from 20 wt % to 50 wt % showed a linear positive evolution of its tensile strength and Young's modulus against reinforcement content. This is an indication of good reinforcement dispersion and of favorable stress transfer at the fiber-matrix interphase. A car door handle was used as a test case to assess the suitability of curaua-based composites to replace glass fiber-reinforced composites. The mechanical analysis and a preliminary lifecycle analysis are performed to prove such ability.

  • 2.
    Serra-Parareda, Ferran
    et al.
    Univ Girona, Dept Chem Engn, LEPAMAP Grp, Girona 17003, Spain..
    Tarres, Quim
    Univ Girona, Dept Chem Engn, LEPAMAP Grp, Girona 17003, Spain.;Univ Girona, Chair Sustainable Ind Proc, Girona 17003, Spain..
    Delgado-Aguilar, Marc
    Univ Girona, Dept Chem Engn, LEPAMAP Grp, Girona 17003, Spain..
    Espinach, Francesc X.
    Univ Girona, Dept Org, Design Dev & Prod Innovat, Business, Girona 17003, Spain..
    Mutje, Pere
    Univ Girona, Dept Chem Engn, LEPAMAP Grp, Girona 17003, Spain.;Univ Girona, Chair Sustainable Ind Proc, Girona 17003, Spain..
    Vilaseca, Fabiola
    KTH, School of Engineering Sciences in Chemistry, Biotechnology and Health (CBH), Fibre- and Polymer Technology.
    Biobased Composites from Biobased-Polyethylene and Barley Thermomechanical Fibers: Micromechanics of Composites2019In: Materials, ISSN 1996-1944, E-ISSN 1996-1944, Vol. 12, no 24, article id 4182Article in journal (Refereed)
    Abstract [en]

    The cultivation of cereals like rye, barley, oats, or wheat generates large quantities of agroforestry residues, which reaches values of around 2066 million metric tons/year. Barley straw alone represents 53%. In this work, barley straw is recommended for the production of composite materials in order to add value to this agricultural waste. First of all, thermomechanical (TMP) fibers from barley straw are produced and later used to reinforce bio-polyethylene (BioPE) matrix. TMP barley fibers were chemically and morphologically characterized. Later, composites with optimal amounts of coupling agent and fiber content ranging from 15 to 45 wt % were prepared. The mechanical results showed the strengthening and stiffening capacity of the TMP barley fibers. Finally, a micromechanical analysis is applied to evaluate the quality of the interface and to distinguish how the interface and the fiber morphology contributes to the final properties of these composite materials.

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