Development and characterization of WPCs produced with high amount of wood residue

Barbos, Josiane Dantas Viana; Azevedo, Joyce Batista; Cardoso, Pollyana da Silva Melo; Filho, Fábio da Costa Garcia; Río, T. Gómez del

doi:10.1016/j.jmrt.2020.06.073

Cited by 22 publications

(15 citation statements)

References 38 publications

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“…In particular, a new trend for designing “greener materials” made of natural lignocellulosic fibers (NLFs) is revealing potential materials for the reinforcement of composites for engineering applications [ 4 , 5 , 6 , 7 , 8 ]. Indeed, several NLF-reinforced polymer matrix composites exhibit promising results in different industries, such as the automobile [ 9 , 10 ], aerospace [ 11 ], packing [ 12 ], and building [ 13 , 14 , 15 ] industries, as well as, more recently, even as impact-resistant materials for use against high-energy ammunition [ 16 , 17 , 18 , 19 , 20 ].…”

Section: Introductionmentioning

confidence: 99%

Impact Resistance of Epoxy Composites Reinforced with Amazon Guaruman Fiber: A Brief Report

et al. 2021

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Fibers extracted from Amazonian plants that have traditionally been used by local communities to produce simple items such as ropes, nets, and rugs, are now recognized as promising composite reinforcements. This is the case for guaruman (Ischinosiphon körn) fiber, which was recently found to present potential mechanical and ballistic properties as 30 vol% reinforcement of epoxy composites. To complement these properties, Izod impact tests are now communicated in this brief report for similar composites with up to 30 vol% of guaruman fibers. A substantial increase in impact resistance, with over than 20 times the absorbed energy for the 30 vol% guaruman fiber composite, was obtained in comparison to neat epoxy. These results were statistically validated by Weibull analysis, ANOVA, and Tukey’s test. Scanning electron microscopy analysis disclosed the mechanisms responsible for the impact performance of the guaruman fiber composites.

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Section: Introductionmentioning

confidence: 99%

Impact Resistance of Epoxy Composites Reinforced with Amazon Guaruman Fiber: A Brief Report

et al. 2021

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Section: Introductionmentioning

confidence: 99%

“…Based on environmental and social concerns such as climate change, global warming, and the growing population in urban areas, government environmental regulations have been encouraging industries to replace inorganic materials by environmentally friendly alternatives [ 1 , 2 ]. The consolidation of the circular economy and the usage of renewable materials can contribute to a more sustainable future [ 2 ]. Lightweight materials are an alternative to reduce the fuel consumption in vehicles and can also be used in other engineering fields, such as aerospace applications and construction industry [ 1 , 2 , 3 ].…”

Section: Introductionmentioning

confidence: 99%

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Assessment of Morphological, Physical, Thermal, and Thermal Conductivity Properties of Polypropylene/Lignosulfonate Blends

et al. 2021

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Lignosulfonate is a cheap material available in large quantities obtained as a byproduct of paper and cellulose. In this work, blends of polypropylene (PP) and sodium lignosulfonate (LGNa) were developed to evaluate the potential use of lignosulfonate as a lightweight, thermal insulation and flame retardant material. The blends were obtained by mixing in a torque rheometer and molded after compression. The blend proprieties were evaluated by physical, morphological, thermal, thermal conductivity, and flammability tests. The measured values were compared with theoretical models. The results indicated that a heterogeneous blend with a higher number of separated domains is formed when the LGNa content increases from 10 to 40 wt%. In addition, the density and thermal conductivity coefficient of the blends studied are not affected by the addition of LGNa. However, when the LGNa content in the blend exceeds 20 wt% the thermal stability and flame retardant proprieties are considerably reduced. The theoretical models based on the rule of mixtures showed a good agreement with the experimental values obtained from blend density, thermal conductivity, and thermal stability. In general, lignosulfonate tested in this work shows potential to be used as a reactive component in polymer blends.

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“…The concern of society with environmental issues is a driving force that constantly seeks that new alternative in different industry sectors can minimize waste generation and promote recycling initiatives that can contribute to obtain sustainable processes (Barbos et al 2020, Gheith et al 2019.The forestry sector is known for using natural resources on a large scale and for generating large amounts of wood waste (Mohd Yusof et al 2020). The main part of these lignocellulosic residues is commonly used for energy generation (Poletto 2017) but some are disposed of in landfills.…”

Section: Introductionmentioning

confidence: 99%

Kinetic analysis of thermal degradation of Cedrela odorata, Marmaroxylon racemosum and Tectona grandis from timber industry

Cavinato

Poletto

2021

Maderas, Cienc. tecnol.

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Thermal analysis is a powerful tool to predict the composition and thermal stability of different materials. In this work, thermogravimetric analysis of Cedrela odorata, Marmaroxylon racemosum and Tectona grandis was carried out at four different heating rates (5 °C•min -1 , 10 °C•min -1 , 20 °C•min -1 and 40 °C•min -1 ) in a non-isothermal condition. The degradation kinetics was evaluated based on Flynn-Wall-Ozawa and Criado methods. The half-life time of wood degradation reaction was also studied. The wood thermal degradation process in an oxidizing atmosphere can be divided in dehydration, devolatilization, and combustion. The kinetic results revels apparent activation energy values of 130-240 kJ•mol -1 for Tectona grandis, 150-191 kJ•mol -1 for Marmaroxylon racemosum and 188-205 kJ•mol -1 for Cedrela odorata, when conversion values ranged from 0,1-0,5. The most probable degradation mechanism for wood species studied is a diffusion model based on a three-dimensional diffusion. Cedrela odorata presented the lowest reaction half-life time while Marmaroxylon racemosum showed the highest. On the basis of these results, it can be concluded that Flynn-Wall-Ozawa and Criado methods associated with half-life time of reaction may contribute to better understand the wood degradation before use it in polymer composites.

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Development and characterization of WPCs produced with high amount of wood residue

Cited by 22 publications

References 38 publications

Impact Resistance of Epoxy Composites Reinforced with Amazon Guaruman Fiber: A Brief Report

Impact Resistance of Epoxy Composites Reinforced with Amazon Guaruman Fiber: A Brief Report

Assessment of Morphological, Physical, Thermal, and Thermal Conductivity Properties of Polypropylene/Lignosulfonate Blends

Kinetic analysis of thermal degradation of Cedrela odorata, Marmaroxylon racemosum and Tectona grandis from timber industry

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