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O. Gutierrez,R. Balart,D. Lascano,L. Quiles-Carrillo,E. Fages,L. Sanchez-Nacher 한국섬유공학회 2020 Fibers and polymers Vol.21 No.5
This work is focused on the upgrading olive oil pomace to obtain high environmentally friendly insulationmaterials for the construction and building industry. Upgrading of these wastes has been carried out by using the wet-laidtechnology in combination with different thermoplastic binder fibers both from natural and synthetic origin. After the wetlaidprocess, the obtained veils or non-wovens were subjected to different processes: a hot-press moulding process or acontinuous lamination process. The acoustic insulation properties were obtained by the Kundt’s tube while the thermalinsulating properties were obtained through determining heat transmission resistance (R) and heat absorption parameter (λ). These tests have revealed the excellent insulation properties of the olive pomace-derived materials, specifically, those basedon high surface density non-wovens. The complementary process that follows wet-laid, i.e. hot-press moulding orcontinuous lamination process has a remarkable effect on insulation behaviour. In particular, the hot-pressed materials fromolive pomace show better acoustic insulation while the continuously laminated materials offer the best thermal insulationproperties.
L. Quiles-Carrillo,R. Balart,T. Boronat,S. Torres-Giner,D. Puglia,F. Dominici,L. Torre 한국섬유공학회 2021 Fibers and polymers Vol.22 No.3
This work reports the preparation and characterization of fully bio-based polymer composites with coconut fibers(CFs) as an alternative to wood-plastic composites (WPCs), typically based on petroleum derived materials. Polyamide 1010(PA1010) was melt-extruded with 20 wt% of CFs and, after that, shaped into pieces by injection molding. Four differentmulti-functionalized compatibilizers were tested to increase the polymer-fiber interactions with the subsequent improvementon toughness. These consisted of two chemically modified vegetable oils, namely maleinized and epoxidized linseed oil (MLOand ELO) respectively, and two commercial additives derived from petroleum and based on glycidyl functionality, that is,low-functionality epoxy-based styrene-acrylic oligomer (ESAO) and polystyrene-glycidyl methacrylate random copolymer(PS-GMA). The addition of all four compatibilizers improved both the mechanical and thermomechanical properties of thecomposites, thus resulting in high-performance composite materials with relatively low water uptake. Furthermore, themorphology of the obtained composites revealed an extraordinary embedment of the fibers into the biopolymer matrix, whichplays a crucial role in improving toughness. Among all the tested compatibilizers, those derived from vegetable oils can beconsidered the most interesting ones due to they offer a more sustainable solution.