Investigation of the Thermal and Mechanical Properties of Organic Waste Reinforced Polyester Composites
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RESEARCH PAPER
Investigation of the Thermal and Mechanical Properties of Organic Waste Reinforced Polyester Composites Kenan Büyükkaya1 · Birkut Güler1 · Murat Koru2 Received: 8 May 2019 / Accepted: 13 October 2020 © Shiraz University 2020
Abstract The aim of the research is to investigate the usability of composites produced using the organic waste from hazelnut and corn processing in the Black Sea Region in constructional applications with regard to mechanical and thermal conduction. Polymer composite test samples were produced to which hazelnut shells, corn stalk, nettle stalk (excl. fibres) and nettle fibres had been added in varying (5, 10, 15, 20%) weights to the polyester matrix. Thermal conductivity coefficients were determined in the context of the thermal properties of composite samples. In addition, mechanical properties were determined by compression strength and a three-point bending test. The physical properties of the wastes were determined via XRD, glass transition temperature, one of the thermal features of the composites that is found via DSC and, lastly, the thermal conductivity and specific heat capacity are determined via a heat flow meter. The effect of organic waste amounts and their chemical and physical features on composites’ mechanical and thermal properties are discussed in this study. The results of the study show that nettle stalk-reinforced composites have a low density and more advantageous features than the other composites tested in terms of their thermal conductivities. Keywords Composite · Mechanical properties organic wastes · Polyester · Thermal conductivity Abbreviation ASTM American Society for Testing and Materials EN European Standards DSC Differential scanning calorimetry MPa Megapascal XRD X-ray diffraction CrI Crystallinity index Q Heat flow Cp Specific heat capacity Electronic supplementary material The online version of this article (https://doi.org/10.1007/s40996-020-00517-3) contains supplementary material, which is available to authorized users. * Kenan Büyükkaya [email protected] Birkut Güler [email protected] Murat Koru [email protected] 1
Technical Sciences Vocational High School, Giresun University, Gazipaşa Campus, 28100 Giresun, Turkey
Faculty of Technology, Department of Energy Systems Engineering, Applied Science University of Isparta, West Campus, 32260 Isparta, Turkey
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1 Introduction Increased environmental awareness and social interest, energy and raw material consumption from unsustainable fossil sources, and new environmental regulations have resulted in an increased demand for environmentally friendly materials. At the same time, social sensitivity has developed to point that the reduction of the environmental cost of conventional synthetic fibre-reinforced composite materials, among many other such materials, is now considered a social responsibility (Donnell et al. 2004; Low et al. 2007). This demand has created new requirements such as the desire or need for environmentally friendly materia
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