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Journal articles on the topic 'Bio-Sourced composite material'

Author: Grafiati

Published: 13 April 2024

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1

Moussa, Tala, Chadi Maalouf, Christophe Bliard, et al. "Spent Coffee Grounds as Building Material for Non-Load-Bearing Structures." Materials 15, no. 5 (2022): 1689. http://dx.doi.org/10.3390/ma15051689.

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The gradual development of government policies for ecological transition in the modern construction sector leads researchers to explore new alternative and low environmental impact materials with a particular focus on bio-sourced materials. In this perspective, the mechanical, thermal insulation, and the sound absorption performances of a spent coffee grounds/potato starch bio-based composite were analyzed for potential application in buildings. Based on thermal conductivity and diffusivity tests, the coffee grounds waste biocomposite was characterized as an insulating material comparable with

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Zhang, Dan. "Fire-Safe Biobased Composites: Enhancing the Applicability of Biocomposites with Improved Fire Performance." Fire 6, no. 6 (2023): 229. http://dx.doi.org/10.3390/fire6060229.

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Research has recently transitioned from the study of fossil-based materials to bio-sourced ones, following the quest to achieve sustainability. However, fire presents a unique hazard to bio-composite materials, which limits their applicability in various sectors. This necessitates an in-depth assessment of the fire behaviour of biobased composites used for specific applications. Improving the fire properties of bio-composites with flame retardants tends to reduce mechanical strength. Therefore, this review focused on biobased composite materials for packaging, structural, automotive, and aeron

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Samouh, Z., A. Abed, C. Cochrane, et al. "Investigation on bio-sourced textile reinforcement for composite material based on sisal Moroccan yarns." IOP Conference Series: Materials Science and Engineering 1266, no. 1 (2023): 012013. http://dx.doi.org/10.1088/1757-899x/1266/1/012013.

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Abstract The main objective of this paper aims at investigating the potential use of sisal yarn into composite material despite the inherent variability of properties of natural resources. A multi-scale approach of the behavior of sisal fiber woven reinforcements is conducted to understand and evaluate the different properties of woven reinforcements. At the yarn scale, a piezo-resistive sensor yarn was developed to assess deformations and stress concentrations in-situ in order to understand the material behavior during the weaving of woven reinforcements fibrous for bio-sourced composite mate

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ARHAB, FATMA, BOUALEM DJEBRI, HEMZA SAIDI, BASSAM GAMAL NASSER MUTHANNA, and ABDELKADER MEBROUKI. "ELABORATION OF THERMAL INSULATION COMPOSITES BASED ON PAPER WASTE AND BIO-SOURCED MATERIAL." Cellulose Chemistry and Technology 58, no. 1-2 (2024): 153–61. http://dx.doi.org/10.35812/cellulosechemtechnol.2024.58.15.

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It is well-known that energy consumption is increasing around the world on a daily basis. In the construction sector, a highly effective solution for reducing energy consumption involves exploring both modern and traditional buildings designed to adapt to climate changes. One promising approach is to use paper waste and bio-sourced materials as the basis for insulation. The purpose of this study was to improve the sustainability of buildings by using recycled waste materials that have a positive impact on the environment, people, and the economy. A novel insulating material composed of recycle

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Slaimia, Marouen, Naima Belayachi, and Dashnor Hoxha. "In Situ Performance Assessment of a Bio-Sourced Insulation Material from an Inverse Analysis of Measurements on a Demonstrator Building." Advanced Engineering Forum 21 (March 2017): 460–67. http://dx.doi.org/10.4028/www.scientific.net/aef.21.460.

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The purpose of this study is to evaluate the potential of bio-sourced material based on cereal straw for an efficient insulation. Decreasing significantly energy consumption of buildings requires not only the very best insulation material for heat loss reduction through the wall but also the reduction of air permeability which can affect automatically the comfort in the building. This is why, propose an insulation material with low thermal conductivity remains insufficient and the evaluation of the performance of the new insulation material in situ in real conditions is an essential step. The

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Toifane, Hachmi, Pierre Tittelein, Yassine Cherif, Laurent Zalewski, and Hervé Leuck. "Thermophysical Characterization of a Thermoregulating Interior Coating Containing a Bio-Sourced Phase Change Material." Applied Sciences 12, no. 8 (2022): 3827. http://dx.doi.org/10.3390/app12083827.

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This paper presents the work carried out as part of a study of a proactive interior coating based on both plaster and a phase change material (PCM), intended to improve the energy efficiency of buildings. This bio-based PCM is composed of a mixture of vegetable oils, methyl stearate, and methyl palmitate micro-encapsulated into polymer capsules. These components with distinct thermal properties constitute a mixture that displays supercooling and proves difficult to characterize using methods known in the literature. This article focuses on the thermophysical characterization (i.e., thermal con

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Verstraete, Sofie, Bart Buffel, Dharmjeet Madhav, Stijn Debruyne, and Frederik Desplentere. "Short Flax Fibres and Shives as Reinforcements in Bio Composites: A Numerical and Experimental Study on the Mechanical Properties." Polymers 15, no. 10 (2023): 2239. http://dx.doi.org/10.3390/polym15102239.

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The complete flax stem, which contains shives and technical fibres, has the potential to reduce the cost, energy consumption and environmental impacts of the composite production process if used directly as reinforcement in a polymer matrix. Earlier studies have utilised flax stem as reinforcement in non-bio-based and non-biodegradable matrices not completely exploiting the bio-sourced and biodegradable nature of flax. We investigated the potential of using flax stem as reinforcement in a polylactic acid (PLA) matrix to produce a lightweight, fully bio-based composite with improved mechanical

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Davies, Peter. "Environmental degradation of composites for marine structures: new materials and new applications." Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences 374, no. 2071 (2016): 20150272. http://dx.doi.org/10.1098/rsta.2015.0272.

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This paper describes the influence of seawater ageing on composites used in a range of marine structures, from boats to tidal turbines. Accounting for environmental degradation is an essential element in the multi-scale modelling of composite materials but it requires reliable test data input. The traditional approach to account for ageing effects, based on testing samples after immersion for different periods, is evolving towards coupled studies involving strong interactions between water diffusion and mechanical loading. These can provide a more realistic estimation of long-term behaviour bu

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Kwaśniewska, Anita, Michał Świetlicki, Beata Kowalska, and Grzegorz Gładyszewski. "Polysaccharide Composite Films Utilising Wood Waste." Materials 16, no. 17 (2023): 6031. http://dx.doi.org/10.3390/ma16176031.

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This study aimed to investigate the effect of raw waste pine wood dust (Pinus sylvestris) from furniture production on polysaccharide biopolymer film properties. The obtained biocomposite films produced via the casting method were prepared with 20% glycerol and 0%, 5%, 10%, 15%, 20%, and 25% of added wood dust in relation to the dry starch matter. Wood dust composition and particle size distribution analysis were performed. In order to evaluate the material surface properties, tests were carried out using an atomic force microscope (AFM) and a contact angle goniometer. Utilising uniaxial tensi

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Guessasma, Sofiane, and Sofiane Belhabib. "Effect of the Printing Angle on the Microstructure and Tensile Performance of Iron-Reinforced Polylactic Acid Composite Manufactured Using Fused Filament Fabrication." Journal of Manufacturing and Materials Processing 8, no. 2 (2024): 65. http://dx.doi.org/10.3390/jmmp8020065.

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This work emphasizes an innovative approach utilizing 3D imaging technology based on synchrotron radiation to assess the microstructure of second-phase iron particles and the porous structure within 3D-printed PLA/magnetic iron composites at different printing angles. The study examines how these observations relate to the material’s ductility when processed using fused filament fabrication. In particular, this study examines the impact of one processing parameter, specifically the printing angle, on the microstructure and mechanical behaviour of a polylactic acid (PLA)–iron (PLI) composite de

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Vidakis, Nectarios, Markos Petousis, Nikolaos Mountakis, et al. "Glass Fillers in Three Different Forms Used as Reinforcement Agents of Polylactic Acid in Material Extrusion Additive Manufacturing." Applied Sciences 13, no. 11 (2023): 6471. http://dx.doi.org/10.3390/app13116471.

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The industrial demand for functional filaments made of bio-sourced, biocompatible, biodegradable, and/or recyclable polymers and composites for material extrusion (MEX) 3D printing is continuously growing. Polylactic acid (PLA), the most popular filament, combines such properties, yet its reinforcement with low-cost, inert, and/or recycled fillers remains challenging. Herein, glass in three different micro/nano-forms was the reinforcement agent in PLA. Three different experimental tiers were elaborated by producing composite filaments with glass in powder, beads, and flake forms in various loa

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Menčík, Přemysl, Radek Přikryl, Štěpán Krobot, et al. "Evaluation of the Properties of PHB Composite Filled with Kaolin Particles for 3D Printing Applications Using the Design of Experiment." International Journal of Molecular Sciences 23, no. 22 (2022): 14409. http://dx.doi.org/10.3390/ijms232214409.

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In the presented work, poly(3-hydroxybutyrate)-PHB-based composites for 3D printing as bio-sourced and biodegradable alternatives to synthetic plastics are characterized. The PHB matrix was modified by polylactide (PLA) and plasticized by tributyl citrate. Kaolin particles were used as a filler. The mathematical method “Design of Experiment” (DoE) was used to create a matrix of samples for further evaluation. Firstly, the optimal printing temperature of the first and upper layers was determined. Secondly, the 3D printed samples were tested with regards to the warping during the 3D printing. Te

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Campbell, Andrew I., Sandra Sexton, Carl J. Schaschke, Harry Kinsman, Brian McLaughlin, and Martin Boyle. "Prosthetic limb sockets from plant-based composite materials." Prosthetics and Orthotics International 36, no. 2 (2012): 181–89. http://dx.doi.org/10.1177/0309364611434568.

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Background: There is a considerable demand for lower limb prostheses globally due to vascular disease, war, conflict, land mines and natural disasters. Conventional composite materials used for prosthetic limb sockets include acrylic resins, glass and carbon fibres, which produce harmful gasses and dust in their manufacture.Objectives: To investigate the feasibility of using a renewable plant oil-based polycarbonate-polyurethane copolymer resin and plant fibre composite, instead of conventional materials, to improve safety and accessibility of prosthetic limb manufacture.Study Design: Experime

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Messis, Meriem, Nasr Eddine Bouhamou, and Abdelatif Benaisa. "Durability of Raw Earth Blocks Reinforced with Wheat Straw Fibers." Advanced Materials Research 1178 (July 25, 2023): 131–48. http://dx.doi.org/10.4028/p-b0meu9.

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The key drivers of the growing interest in the recovery of local materials, particularly land and waste plants, are low-cost building materials, thermal comfort, decreased energy consumption, and decreased carbon dioxide polluting emissions. This work's primary objective is to test a bio-sourced composite material that takes the form of a block of unfinished soil that has been stabilized with cement and blended with wheat straw. This study is being done with the objective of examining the impact of this fiber at different weight percentages (0, 2, 3%, and 4%) on the mechanical behavior, durabi

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Le Barbenchon, Louise, Jérémie Girardot, Jean-Benoît Kopp, and Philippe Viot. "Strain Rate Effect on the Compressive Behaviour of Reinforced Cork Agglomerates." EPJ Web of Conferences 183 (2018): 03018. http://dx.doi.org/10.1051/epjconf/201818303018.

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The demand for bio-sourced materials is currently increasing. Cork material because of its unique properties (fire resistant, energy absorbing, …) is then an excellent candidate for a large set of applications. In order to widen its possible uses, cork agglomerates with reinforcements at a 0.48 density were studied to compare their mechanical performances with classical cork agglomerates. This paper investigates the effect of these foreign reinforcements on the properties of agglomerated cork under a compressive loading. The material behavior has been determined as a function of the average st

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Rozaini, Muhamad Tahriri, Denys I. Grekov, Mohamad Azmi Bustam, and Pascaline Pré. "Shaping of HKUST-1 via Extrusion for the Separation of CO2/CH4 in Biogas." Separations 10, no. 9 (2023): 487. http://dx.doi.org/10.3390/separations10090487.

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HKUST-1 is a metal-organic framework (MOF) that is widely studied as an adsorbent for CO2 capture because of its high adsorption capacity and good CO2/CH4 selectivity. However, the numerous synthesis routes for HKUST-1 often result in the obtention of MOF in powder form, which limits its application in industry. Here, we report the shaping of HKUST-1 powder via the extrusion method with the usage of bio-sourced polylactic acid (PLA) as a binder. The characterization of the composite was determined by XRD, FTIR, TGA and SEM analyses. The specific surface area was determined from the N2 adsorpti

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Ben Hadj Tahar, Dhouha, Zakaria Triki, Mohamed Guendouz, et al. "Characterization and Thermal Evaluation of a Novel Bio-BasedNatural Insulation Material from Posidonia oceanica Waste: A Sustainable Solution for Building Insulation." ChemEngineering 8, no. 1 (2024): 18. http://dx.doi.org/10.3390/chemengineering8010018.

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Natural bio-based insulation materials have been the most interesting products for good performance and low carbon emissions, becoming widely recognized for their sustainability in the context of climate change and the environmental impact of the building industry. The main objective of this study is to characterize a new bio-sourced insulation material composed of fibers and an adhesive based on cornstarch. This innovative material is developed from waste of the marine plant called Posidonia oceanica (PO), abundantly found along the Algerian coastline. The research aims to valorize this PO wa

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Liu, Dagang, Ying Zhang, Xun Sun, and Peter R. Chang. "Recent advances in bio-sourced polymeric carbohydrate/nanotube composites." Journal of Applied Polymer Science 131, no. 12 (2014): n/a. http://dx.doi.org/10.1002/app.40359.

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Ouagne, Pierre. "3rd Edition of the Young Researchers' Days in Bio-sourced Composites." Revue des composites et des matériaux avancés 29, no. 5 (2019): 275–76. http://dx.doi.org/10.18280/rcma.290500.

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Calvino, Céline, Nicholas Macke, Ryo Kato, and Stuart J. Rowan. "Development, processing and applications of bio-sourced cellulose nanocrystal composites." Progress in Polymer Science 103 (April 2020): 101221. http://dx.doi.org/10.1016/j.progpolymsci.2020.101221.

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Arinkoola, A. O,, K. K. Salam, T. O. Salawudeen, et al. "Improvement of Filtration Properties of Treated Nigerian Bentonitic Clay Using Locally Sourced Bio-Materials." LAUTECH Journal of Civil and Environmental Studies 5, no. 1 (2020): 114–30. http://dx.doi.org/10.36108/laujoces/0202/50(0121).

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Exploitation of Nigerian bentonitic clay deposit will offer economic advantage in terms of utilization for drilling purpose and prevent money spent on importation. Clay used for this analysis was beneficiated using sodium Carbonate (Na2CO3) and the change in the elemental composition of the raw clay sample and treated clay with was estimated using X-ray fluorescence spectroscopy (XRF). The treated clay and locally sourced bio-materials were added to the formulation of drilling fluid using Reduced Central Composite Design (RCCD). The fluid loss and cake thickness of prepared drilling fluid were

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Villamil Watson, Daniel A., and David A. Schiraldi. "Biomolecules as Flame Retardant Additives for Polymers: A Review." Polymers 12, no. 4 (2020): 849. http://dx.doi.org/10.3390/polym12040849.

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Biological molecules can be obtained from natural sources or from commercial waste streams and can serve as effective feedstocks for a wide range of polymer products. From foams to epoxies and composites to bulk plastics, biomolecules show processability, thermal stability, and mechanical adaptations to fulfill current material requirements. This paper summarizes the known bio-sourced (or bio-derived), environmentally safe, thermo-oxidative, and flame retardant (BEST-FR) additives from animal tissues, plant fibers, food waste, and other natural resources. The flammability, flame retardance, an

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Sallem-Idrissi, N., P. Van Velthem, and M. Sclavons. "Fully Bio-Sourced Nylon 11/Raw Lignin Composites: Thermal and Mechanical Performances." Journal of Polymers and the Environment 26, no. 12 (2018): 4405–14. http://dx.doi.org/10.1007/s10924-018-1311-7.

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Aguado, Roberto J., Gabriela A. Bastida, Francisco X. Espinach, et al. "Comparative Study on the Stiffness of Poly(lactic acid) Reinforced with Untreated and Bleached Hemp Fibers." Polymers 15, no. 13 (2023): 2960. http://dx.doi.org/10.3390/polym15132960.

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Composite materials containing natural reinforcement fibers, generally called biocomposites, have attracted the interest of both researchers and manufacturers, but the most environmentally advantageous combinations include a bio-based matrix, as well. With this in mind, a poly(lactic acid) (PLA) matrix was reinforced with natural fibers from hemp, both untreated strands (UHSs) and soda-bleached fibers (SBHFs). The preparation of the subsequent fully bio-sourced, discontinuously reinforced composites involved kinetic mixing, intensive single-screw extrusion, milling, and injection molding. Up t

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Zdiri, Khmais, Aurélie Cayla, Adel Elamri, Annaëlle Erard, and Fabien Salaun. "Alginate-Based Bio-Composites and Their Potential Applications." Journal of Functional Biomaterials 13, no. 3 (2022): 117. http://dx.doi.org/10.3390/jfb13030117.

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Over the last two decades, bio-polymer fibers have attracted attention for their uses in gene therapy, tissue engineering, wound-healing, and controlled drug delivery. The most commonly used bio-polymers are bio-sourced synthetic polymers such as poly (glycolic acid), poly (lactic acid), poly (e-caprolactone), copolymers of polyglycolide and poly (3-hydroxybutyrate), and natural polymers such as chitosan, soy protein, and alginate. Among all of the bio-polymer fibers, alginate is endowed with its ease of sol–gel transformation, remarkable ion exchange properties, and acid stability. Blending a

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Lebaupin, Yann, Thuy-Quynh T. Hoang, Michaël Chauvin, and Fabienne Touchard. "Influence of the stacking sequence on the low-energy impact resistance of flax/PA11 composite." Journal of Composite Materials 53, no. 22 (2019): 3187–98. http://dx.doi.org/10.1177/0021998319837339.

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In this paper, the low-energy impact behavior of a fully biobased composite made of bio-sourced polyamide 11 resin reinforced with flax fibers was investigated. Different composite laminates were studied in order to determine the stacking sequence effects on the impact behavior of these composites. Four stacking sequences were manufactured: unidirectional [0°]8, cross-ply [0°/90°]2s, sandwich-like [02°/902°]s and quasi-isotropic [45°/0/−45°/90°]s. A low impact energy of 3.6 J was applied on these laminates by means of a drop weight impact tower. The impact properties of these lay-ups were asce

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Namphonsane, Atitiya, Taweechai Amornsakchai, Chin Hua Chia, et al. "Development of Biodegradable Rigid Foams from Pineapple Field Waste." Polymers 15, no. 13 (2023): 2895. http://dx.doi.org/10.3390/polym15132895.

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Pineapple materials sourced from agricultural waste have been employed to process novel bio-degradable rigid composite foams. The matrix for the foam consisted of starch extracted from pineapple stem, known for its high amylose content, while the filler comprised non-fibrous cellulosic materials sourced from pineapple leaf. In contrast to traditional methods that involve preparing a batter, this study adopted a unique approach where the starch gel containing glycerol were first formed using a household microwave oven, followed by blending the filler into the gel using a two-roll mill. The resu

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Pierau, Lucie, Christine Elian, Jun Akimoto, Yoshihiro Ito, Sylvain Caillol, and Davy-Louis Versace. "Bio-sourced monomers and cationic photopolymerization–The green combination towards eco-friendly and non-toxic materials." Progress in Polymer Science 127 (April 2022): 101517. http://dx.doi.org/10.1016/j.progpolymsci.2022.101517.

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Khandelwal, Vinay, Sushanta K. Sahoo, Ashok Kumar, Sushanta K. Sethi, and Gaurav Manik. "Bio-sourced electrically conductive epoxidized linseed oil based composites filled with polyaniline and carbon nanotubes." Composites Part B: Engineering 172 (September 2019): 76–82. http://dx.doi.org/10.1016/j.compositesb.2019.05.050.

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Samouh, Zineb, Omar Cherkaoui, Damien Soulat, Ahmad Rashed Labanieh, François Boussu, and Reddad El moznine. "Identification of the Physical and Mechanical Properties of Moroccan Sisal Yarns Used as Reinforcements for Composite Materials." Fibers 9, no. 2 (2021): 13. http://dx.doi.org/10.3390/fib9020013.

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This work aims to investigate the physical and mechanical properties of sisal fiber and yarn of Moroccan origin. The cellulosic and non-cellulosic constituents of the Moroccan sisal fiber were identified by FTIR spectroscopy. The thermal properties were studied by thermogravimetric analysis. The hydrophilicity of the fiber was evaluated by the contact angle. The results show that the sisal fiber has a low thermal stability. The mechanical properties of the fiber analyzed by the Impregnated Fiber Bundle Test (IFBT) method show that the porosity of the impregnated yarns and the twist angle of th

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Chaves Garcia, Maria Camila, Juan Dayal Castro Bermudez, and Alberto David Pertuz Comas. "Uniaxial fatigue study of a natural-based bio-composite material reinforced with fique natural fibers." Frattura ed Integrità Strutturale 18, no. 68 (2024): 94–108. http://dx.doi.org/10.3221/igf-esis.68.06.

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This research addresses environmental concerns by exploring environmentally friendly composite materials as substitutes for non-biodegradable synthetic fibers. The study proposes the development of polymer matrix composites reinforced with natural fique fibers, sourced from a plant cultivated in Colombia. A BioPoxy 36 polymer matrix with a high carbon content was used and reinforced with fique fabric using the vacuum-assisted lamination method. To improve the adhesion between the fibers and the matrix, an alkaline chemical treatment was applied to the fiber using 2% sodium hydroxide by weight.

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Salleh, Z., and M. A. A. Zullastri. "COMPARISON OF FLEXURAL PROPERTIES OF PINEWOOD WITH FEA SIMULATION FOR MARINE APPLICATION." Jurnal Teknologi 86, no. 2 (2024): 209–15. http://dx.doi.org/10.11113/jurnalteknologi.v86.20667.

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Pine wood sourced from pellet packaging, being abundant, holds potential for utilization in creating bio composites, particularly as activated carbon for laminated coatings in structural applications. However, there is a current lack of research identifying its specific properties as a coating material for Fiber Reinforced Polymer (FRP) composites. Fiber Reinforced Polymer (FRP) composites provide a highly adaptable solution for reinforcing and revitalizing existing structures in challenging marine conditions. This study delves into investigating the flexural characteristics of FRP pine wood c

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Ghorbel, Elhem, Mariem Limaiem, and George Wardeh. "Mechanical Performance of Bio-Based FRP-Confined Recycled Aggregate Concrete under Uniaxial Compression." Materials 14, no. 7 (2021): 1778. http://dx.doi.org/10.3390/ma14071778.

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This research investigates the effectiveness of bio-sourced flax fiber-reinforced polymer in comparison with a traditional system based on carbon fiber-reinforced epoxy polymer in order to confine recycled aggregate concretes. The experimental investigation was conducted on two series of concrete including three mixtures with 30%, 50%, and 100% of recycled aggregates and a reference concrete made with natural aggregates. The concrete mixtures were intended for a frost environment where an air-entraining agent was added to the mixture of the second series to achieve 4% air content. The first pa

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Sayouba, Sandwidi, Haro Kayaba, Dabilgou Téré, et al. "Search for Qualified Soil for the Production of Low-Energy Biobased Composite Materials." Asian Journal of Physical and Chemical Sciences 11, no. 3 (2023): 64–73. http://dx.doi.org/10.9734/ajopacs/2023/v11i3207.

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The development of earth-based bio-sourced materials requires a thorough analysis of the study soil. For the present study, we took five (05) soil samples from a tunnel-digged quarry in the layer between 0.5 m and 5 m : white clay (MSB-BL), red clay (MSB-RG), weak clay or sandy clay (MSB-FB), strong clay (MSB-FR) and mixture (MSB-ME). To verify the quality of these five (05) soils samples, their intrinsic properties were determined at the National Building and Public Works Laboratory (LNBTP). These included grain size, clay content, specific weight, loss on ignition and moisture content. These

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David, Grégoire, Nathalie Gontard, and Hélène Angellier-Coussy. "Mitigating the Impact of Cellulose Particles on the Performance of Biopolyester-Based Composites by Gas-Phase Esterification." Polymers 11, no. 2 (2019): 200. http://dx.doi.org/10.3390/polym11020200.

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Materials that are both biodegradable and bio-sourced are becoming serious candidates for substituting traditional petro-sourced plastics that accumulate in natural systems. New biocomposites have been produced by melt extrusion, using bacterial polyester (poly(3-hydroxybutyrate-co-3-hydroxyvalerate)) as a matrix and cellulose particles as fillers. In this study, gas-phase esterified cellulose particles, with palmitoyl chloride, were used to improve filler-matrix compatibility and reduce moisture sensitivity. Structural analysis demonstrated that intrinsic properties of the polymer matrix (cry

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Aguado, Roberto J., Francesc X. Espinach, Fernando Julián, Quim Tarrés, Marc Delgado-Aguilar, and Pere Mutjé. "Tensile Strength of Poly(Lactic Acid)/Bleached Short Hemp Fiber Fully Green Composites as Replacement for Polypropylene/Glass Fiber." Polymers 15, no. 1 (2022): 146. http://dx.doi.org/10.3390/polym15010146.

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The compatibility between poly(lactic acid) (PLA) and natural fibers to develop bio-sourced, recyclable, and biodegradable composites remains a commonplace issue. This work highlights that, at least in the case of hemp, pulping and bleaching towards delignified short fibers attained remarkable improvements over untreated hemp strands. This approach differs from usual proposals of chemically modifying hydroxyl groups. Soda-bleached hemp fibers (SBHFs) granted a relatively large bonding surface area and a satisfactory quality of the interphase, even in the absence of any dispersant or compatibil

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Kremensas, Arūnas, Agnė Kairytė, Saulius Vaitkus, Sigitas Vėjelis, and Giedrius Balčiūnas. "Mechanical Performance of Biodegradable Thermoplastic Polymer-Based Biocomposite Boards from Hemp Shivs and Corn Starch for the Building Industry." Materials 12, no. 6 (2019): 845. http://dx.doi.org/10.3390/ma12060845.

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Bio-sourced materials combined with a polymer matrix offer an interesting alternative to traditional building materials. To contribute to their wider acceptance and application, an investigation into the use of wood-polymer composite boards is presented. In this study, biocomposite boards (BcB) for the building industry are reported. BcB are fabricated using a dry incorporation method of corn starch (CS) and hemp shiv (HS) treatment with water at 100 °C. The amount of CS and the size of the HS fraction are evaluated by means of compressive bending and tensile strength, as well as microstructur

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Robledo-Ortíz, Jorge Ramón, Martín Esteban González-López, Alan Salvador Martín del Campo, et al. "Fiber-matrix interface improvement via glycidyl methacrylate compatibilization for rotomolded poly(lactic acid)/agave fiber biocomposites." Journal of Composite Materials 55, no. 2 (2020): 201–12. http://dx.doi.org/10.1177/0021998320946821.

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The growing interest in research and development of eco-friendlier materials makes attractive the use of bio-based and biodegradable polymers such as polylactic acid (PLA). However, the higher cost of PLA compared to conventional polymers limits its applications. Moreover, raw materials for rotational molding must be in a powder form, which further increases their cost. So, the main objective of this study was to use agave fibers to produce lower-cost PLA based rotomolded biocomposites (BC) without compromising its bio-sourced origin and to compare with a standard rotomolding resin: linear med

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Ungureanu, Simona, Marc Birot, Gérard Vignoles, et al. "Integrative Chemistry toward Biosourced SiC Macrocellular Foams Bearing Unprecented Heat Transport Properties." MRS Proceedings 1621 (2014): 209–14. http://dx.doi.org/10.1557/opl.2014.2.

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ABSTRACTBlack liquor is a by-product of the paper mill Kraft process that deserves more valorization than its present use as low-grade fuel. In this work, SiC/C composite foams were prepared for the first time from concentrated emulsions by carbothermal reduction of bio-sourced precursors combining sodium silicate by lignin at 1400°C. The composition of the materials was determined by XRD, FTIR and Raman analyses. Their porous structure was characterized by SEM, mercury intrusion porosimetry, and nitrogen sorption, while their thermal properties were measured by TGA and dynamic DSC. Concerning

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Lopera-Valle, Adrián, Joseph V. Caputo, Rosineide Leão, Dominic Sauvageau, Sandra Maria Luz, and Anastasia Elias. "Influence of Epoxidized Canola Oil (eCO) and Cellulose Nanocrystals (CNCs) on the Mechanical and Thermal Properties of Polyhydroxybutyrate (PHB)—Poly(lactic acid) (PLA) Blends." Polymers 11, no. 6 (2019): 933. http://dx.doi.org/10.3390/polym11060933.

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Two major obstacles to utilizing polyhydroxybutyrate (PHB)—a biodegradable and biocompatible polymer—in commercial applications are its low tensile yield strength (<10 MPa) and elongation at break (~5%). In this work, we investigated the modification of the mechanical properties of PHB through the use of a variety of bio-derived additives. Poly(lactic acid) (PLA) and sugarcane-sourced cellulose nanocrystals (CNCs) were proposed as mechanical reinforcing elements, and epoxidized canola oil (eCO) was utilized as a green plasticizer. Zinc acetate was added to PHB and PLA blends in order to imp

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Galimberti, M., V. Barbera, S. Guerra, and A. Bernardi. "FACILE FUNCTIONALIZATION OF sp2 CARBON ALLOTROPES WITH A BIOBASED JANUS MOLECULE." Rubber Chemistry and Technology 90, no. 2 (2017): 285–307. http://dx.doi.org/10.5254/rct.17.82665.

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ABSTRACT A simple, versatile, sustainable, not expensive method for the functionalization of sp2 carbon allotropes, both nano-sized and nano-structured, without altering their bulk crystalline organization, is presented. Carbon materials available at the commercial scale were used: furnace carbon black (CB), nano-sized graphite with high surface area, and multiwalled carbon nanotubes. A bio-sourced molecule, 2-(2,5-dimethyl-1H-pyrrol-1-yl)-1,3-propanediol (serinol pyrrole), was used for the functionalization. Serinol pyrrole (SP) was obtained from serinol through a reaction with atomic efficie

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Kuete, Martial Aime, Pascal Van Velthem, Wael Ballout, et al. "Integrated Approach to Eco-Friendly Thermoplastic Composites Based on Chemically Recycled PET Co-Polymers Reinforced with Treated Banana Fibres." Polymers 14, no. 22 (2022): 4791. http://dx.doi.org/10.3390/polym14224791.

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A major societal issue of disposal and environmental pollution is raised by the enormous and fast-growing production of single-use polyethylene terephthalate (PET) bottles, especially in developing countries. To contribute to the problem solution, an original route to recycle PET in the form of value-added environmentally friendly thermoplastic composites with banana fibres (Musa acuminata) has been developed at the laboratory scale. Banana fibres are a so far undervalued by-product of banana crops with great potential as polymer reinforcement. The melt-processing constraints of commercial PET

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Choudhury, Atun Roy. "Techno-commercial Assessment of Concurrent Municipal Brown Field Reclamation Procedures: A Pivotal Case study of Jawahar Nagar Dump Site." Journal of Toxicology and Environmental Sciences 1, no. 1 (2021): 23–33. http://dx.doi.org/10.55124/jtes.v1i1.35.

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The quantity of municipal solid waste (MSW) generation is escalating at an alarming rate with every passing year alongside the modernization of our economy. Unfortunately, the majority of this waste remains uncollected or ends up in open dumping and followed by uncontrolled burning. Citing the deep-rooted consequences, open dumping should be absolutely abandoned and scientific interventions should be aggressively exercised to reclaim the municipal brownfields. The present research work undertook the judicial task of assessing the comparative feasibility of biomining and scientific capping as a

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Desnoes, Eric, Lotfi Toubal, Dominic Thibeault, Amel Hadj Bouazza, and Daniel Montplaisir. "Bio-sourced vinyl ester resin reinforced with microfibrillar cellulose: Mechanical and thermal properties." Polymers and Polymer Composites, March 19, 2021, 096739112110020. http://dx.doi.org/10.1177/09673911211002046.

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New thermoset composite material made from cardanol-based resin blended with microfibrillar cellulose was compared to petroleum-based vinyl ester and glass-fiber-reinforced unsaturated polyester in terms of mechanical, thermal, rheological and surface properties of produced polymers and composites. The bio-sourced material was less resistant than the commercial vinyl ester but comparable to the unsaturated polyester resin. Microfibrillar cellulose increased the tensile strength and modulus but increased the resin viscosity and decreased the mixture homogeneity. The bio-sourced and commercial r

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Parikh, Hiral H., Sagar Chokshi, Vijay Chaudhary, Ankit D. Oza, and Chander Prakash. "Development and characterization of eco-friendly extruded green composites using PLA/wood dust fillers." Proceedings of the Institution of Mechanical Engineers, Part J: Journal of Engineering Tribology, February 21, 2024. http://dx.doi.org/10.1177/13506501241233628.

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Nowadays, there is a rising demand for bio-composite materials driven by the increasing need for sustainable alternatives and a desire to lessen dependence on conventional materials. These bio-composites resent eco-friendly solutions to address these challenges. In line with this, the present study focuses on the bio composite material which developed from polylactic acid (PLA) and wood dust (NF). Wood dust sourced from teak wood plants was employed as fillers. PLA served as the matrix material, supplemented with the plasticizer polyethylene glycol (PEG) to enhance PLA processing. The PLA/NF f

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Helaili, Sofiene, and Moez Chafra. "Identification of mechanical properties of a braided alfa stem (Stipa tenacissima L.) by an inverse method." Journal of Composite Materials, December 19, 2022, 002199832211476. http://dx.doi.org/10.1177/00219983221147685.

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The aging of buildings and structures, accompanied by an increase in the prices of conventional building materials, has pushed the scientific community to explore new techniques and materials to rehabilitate existing buildings. Rehabilitation aims to extend the service life of a structure while maintaining its strength and stability. Among these techniques, composite materials based on synthetic fibers, such as carbon fibers, have been developed. However, materials with low carbon footprints that are bio-sourced and eco-friendly are of interest to the scientific community. The use of Alfa plan

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Gharbi, Abderrezak, Aziez Zeddouri, Abdelhafid Gherfi, and Kamal Bouchemaa. "Elaboration and Characterization of the Mechanical Properties and Moisture Buffer Value of a Composite Based on Lime and Date Palm Petiole Fibre." Annals of West University of Timisoara - Physics, August 23, 2022. http://dx.doi.org/10.2478/awutp-2022-0005.

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Abstract This study concerns a new ecological material, bio-sourced and with reduced environmental impact. The material in question is a composite made from date palm fibers and lime. For the development of this material, we were inspired by the techniques used for the manufacture of hemp concrete. The latter is widely used especially in France for the thermal insulation of buildings. The idea is to design an insulation material from the natural resources of the southern Algerian region. The material made is a lightweight concrete that could provide both thermal and acoustic insulation. By its

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Wendland, Rion J., Matthew T. Conway, and Kristan S. Worthington. "Evaluating the polymerization effectiveness and biocompatibility of bio‐sourced, visible light‐based photoinitiator systems." Journal of Biomedical Materials Research Part A, April 4, 2024. http://dx.doi.org/10.1002/jbm.a.37715.

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AbstractThe use of photopolymerization is expanding across a multitude of biomedical applications, from drug delivery to bioprinting. Many of these current and emerging photopolymerization systems employ visible light, as motivated by safety and energy efficiency considerations. However, the “library” of visible light initiators is limited compared with the wealth of options available for UV polymerization. Furthermore, the synthesis of traditional photoinitiators relies on diminishing raw materials, and several traditional photoinitiators are considered emerging environmental contaminants. As

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Parikh, Ankit R., Karen P. Cortés‐Guzmán, Ning Bian, et al. "Surface‐methacrylated microcrystalline cellulose bioresins with soybean oil for additive manufacturing via vat photopolymerization." Journal of Polymer Science, March 4, 2024. http://dx.doi.org/10.1002/pol.20230700.

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AbstractThe additive manufacturing (AM) industry increasingly looks to differentiate itself by utilizing materials and processes that are green, clean, and sustainable. Biopolymers, bio‐sourced raw materials and light weighting of parts 3D printed with photopolymer resins each represent critical directions for the future of AM. Here, we report a series of bio‐based composite resins with soybean oil derivatives, up to 20% by weight of surface‐methacrylated micro‐crystalline cellulose (MCC) and 60% total bio‐based content for vat photopolymerization based additive manufacturing. The ultimate ten

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Wu, Junqi, Rodrick D. Wiggins, Casey H. Weaver, Gerard Kugel, and David L. Kaplan. "Thermoplastic molding of silk protein composite plastic toothbrush handles with on-demand degradability." Frontiers in Sustainability 4 (June 30, 2023). http://dx.doi.org/10.3389/frsus.2023.1169487.

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Toothbrush handles made from synthetic polymers like polypropylene and polyethylene accumulate in the environment at an annual rate of 1 billion devices per year and without significant degradation, resulting in severe burdens particularly in marine environments. Herein, we report a new process to generate these plastic handles using natural, biopolymer-based components using a direct thermoplastic molding approach, that also offers on-demand degradation of the materials. The materials are prepared directly from whole silk cocoons that are thermoplastically transformed into biodegradable plast

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