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      Biocomposites of Bio-Polyethylene Reinforced with a Hydrothermal-Alkaline Sugarcane Bagasse Pulp and Coupled with a Bio-Based Compatibilizer

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          Abstract

          Bio-polyethylene (BioPE, derived from sugarcane), sugarcane bagasse pulp, and two compatibilizers (fossil and bio-based), were used to manufacture biocomposite filaments for 3D printing. Biocomposite filaments were manufactured and characterized in detail, including measurement of water absorption, mechanical properties, thermal stability and decomposition temperature (thermo-gravimetric analysis (TGA)). Differential scanning calorimetry (DSC) was performed to measure the glass transition temperature (Tg). Scanning electron microscopy (SEM) was applied to assess the fracture area of the filaments after mechanical testing. Increases of up to 10% in water absorption were measured for the samples with 40 wt% fibers and the fossil compatibilizer. The mechanical properties were improved by increasing the fraction of bagasse fibers from 0% to 20% and 40%. The suitability of the biocomposite filaments was tested for 3D printing, and some shapes were printed as demonstrators. Importantly, in a cradle-to-gate life cycle analysis of the biocomposites, we demonstrated that replacing fossil compatibilizer with a bio-based compatibilizer contributes to a reduction in CO 2-eq emissions, and an increase in CO 2 capture, achieving a CO 2-eq storage of 2.12 kg CO 2 eq/kg for the biocomposite containing 40% bagasse fibers and 6% bio-based compatibilizer.

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          Most cited references37

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          A review of recent developments in natural fibre composites and their mechanical performance

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            3D-printing of lightweight cellular composites.

            A new epoxy-based ink is reported, which enables 3D printing of lightweight cellular composites with controlled alignment of multiscale, high-aspectratio fiber reinforcement to create hierarchical structures inspired by balsa wood. Young's modulus values up to 10 times higher than existing commercially available 3D-printed polymers are attainable, while comparable strength values are maintained.
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              Lignocellulosics as sustainable resources for production of bioplastics – A review

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                Author and article information

                Contributors
                Role: Academic Editor
                Role: Academic Editor
                Role: Academic Editor
                Journal
                Molecules
                Molecules
                molecules
                Molecules
                MDPI
                1420-3049
                05 May 2020
                May 2020
                : 25
                : 9
                Affiliations
                [1 ]IMAM, UNaM, CONICET, FCEQYN, Programa de Celulosa y Papel (PROCYP), Misiones, Félix de Azara 1552, Posadas, Argentina; ffelissia@ 123456gmail.com (F.E.F.); mariaxvallejos@ 123456gmail.com (M.E.V.); cristinaarea@ 123456gmail.com (M.C.A.)
                [2 ]Peruvian LCA and Industrial Ecology Network (PELCAN), Department of Engineering, Pontificia Universidad Católica del Perú (PUCP), 1801 Avenida Universitaria, San Miguel, Lima 15088, Peru; dita@ 123456pucp.edu.pe (D.I.-N.); iquispe@ 123456pucp.edu.pe (I.Q.)
                [3 ]RISE PFI, NO-7491 Trondheim, Norway
                Author notes
                [* ]Correspondence: nanciehman@ 123456gmail.com (N.V.E.); gary.chinga.carrasco@ 123456rise-pfi.no (G.C.-C.); Tel.: +47-908-36-045 (G.C.-C.)
                Article
                molecules-25-02158
                10.3390/molecules25092158
                7249044
                32380693
                842ed1b9-d195-4251-af28-f689f3e2f2e0
                © 2020 by the authors.

                Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license ( http://creativecommons.org/licenses/by/4.0/).

                Categories
                Article

                bio-based filament,3d printing,sugarcane bagasse pulp

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