Photoluminous Response of Biocomposites Produced with Charcoal

Author:

Delatorre Fabíola Martins1,Cupertino Gabriela Fontes Mayrinck1ORCID,Pereira Allana Katiussya Silva2ORCID,de Souza Elias Costa3,da Silva Álison Moreira2,Ucella Filho João Gilberto Meza1ORCID,Saloni Daniel4ORCID,Profeti Luciene Paula Roberto5ORCID,Profeti Demetrius5ORCID,Dias Júnior Ananias Francisco1

Affiliation:

1. Department of Forestry and Wood Sciences, Federal University of Espírito Santo (UFES), Av. Governador Lindemberg, 316, Jerônimo Monteiro 29550-000, ES, Brazil

2. Department of Forest Sciences, “Luiz de Queiroz” College of Agriculture, University of São Paulo (ESALQ/USP). Av. Pádua Dias, 11, Piracicaba 13418-900, SP, Brazil

3. Institute of Xingu Studies, Federal University of South and Southeast Pará (UNIFESSPA), Subdivision Cidade nova, QD 15, Sector 15, São Félix do Xingu 68380-000, PA, Brazil

4. Department of Forest Biomaterials, College of Natural Resources, North Carolina State University, Raleigh, NC 27695, USA

5. Department of Chemistry and Physics, Federal University of Espírito Santo (UFES), Alegre 29500-000, ES, Brazil

Abstract

Due to the possible effects of global warming, new materials that do not have a negative impact on the environment are being studied. To serve a variety of industries and outdoor applications, it is necessary to consider the impact of photoluminosity on the performance of biocomposites in order to accurately assess their durability characteristics and prevent substantial damage. Exposure to photoluminosity can result in adverse effects such as discoloration, uneven surface, loss of mass, and manipulation of the intrinsic mechanical properties of biocomposites. This study aims to evaluate general charcoal from three pyrolysis temperatures to understand which charcoal is most suitable for photoluminosity and whether higher pyrolysis temperatures have any significant effect on photoluminosity. Porosity, morphology, Fourier transform infrared spectroscopy (FTIR), and X-ray photoelectron spectroscopy of charcoal were analyzed. Charcoal obtained at a temperature of 800 °C demonstrates remarkable potential as a bioreinforcement in polymeric matrices, attributable to its significantly higher porosity (81.08%) and hydrophobic properties. The biocomposites were characterized for flexural strength, tensile strength, scanning electron microscopy (SEM), FTIR, and x-ray diffraction (XRD). The results showed an improvement in tensile strength after exposure to photoluminosity, with an increase of 69.24%, 68.98%, and 54.38% at temperatures of 400, 600, and 800 °C, respectively, in relation to the treatment control. It is notorious that the tensile strength and modulus of elasticity after photoluminosity initially had a negative impact on mechanical strength, the incorporation of charcoal from higher pyrolysis temperatures showed a substantial increase in mechanical strength after exposure to photoluminosity, especially at 800 °C with breaking strength of 53.40 MPa, and modulus of elasticity of 4364.30 MPA. Scanning electron microscopy revealed an improvement in morphology, with a decrease in roughness at 800 °C, which led to greater adhesion to the polyester matrix. These findings indicate promising prospects for a new type of biocomposite, particularly in comparison with other polymeric compounds, especially in engineering applications that are subject to direct interactions with the weather.

Publisher

MDPI AG

Subject

Polymers and Plastics,General Chemistry

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