Tailoring sustainable materials: Investigating nanoclay effects on citric acid crosslinked waste coconut fiber reinforced modified vegetable oil composites

Waste Management Bulletin, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 1, 2025

Language: Английский

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Sustainable Bio-Based Epoxy Technology Progress

Processes, Journal Year: 2025, Volume and Issue: 13(4), P. 1256 - 1256

Published: April 21, 2025

Sustainable bio-based epoxy technology is developed by using materials instead of conventional fossil-derived ones. Significant progress in new material development on resins, curing agents, and additives, as well formulated products, has been achieved recently not only fundamental academic studies but also industrial product development. There are mainly two types resins: resins novel depending the resin building-block type used. Bio-based prepared epichlorohydrin to replace fossil-based epichlorohydrin. usually from epoxidation renewable precursors such unsaturated vegetable oils, saccharides, tannins, cardanols, terpenes, rosins, lignin. Typical agents polyamines, polyamides, amidoamines, cardanol-based phenalkamine-type agents. Cardanol a typical reactive additive available commercially. Certain partially products have supplied for use bonding, coating, casting, composite, laminating applications.

Language: Английский

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In situ hydrolysis for dihydroxystearic acid production from catalytic epoxidation of oleic acid

The Canadian Journal of Chemical Engineering, Journal Year: 2025, Volume and Issue: unknown

Published: April 24, 2025

Abstract Concern regarding the setback of dependency on using fossil fuels as main resources precursor for many derivatives had drawn attention to further study production dihydroxystearic acid (DHSA) by in situ hydrolysis epoxidized oleic acid. Epoxidized was produced formed performic Performic mixing formic oxygen carrier with hydrogen peroxide donor. The Taguchi method proposed that optimum parameter DHSA is peroxide/oleic unsaturation molar ratio 1.5:1, acid/oleic 0.5, reaction temperature 35°C, and agitation speed 200 rpm. Based optimized parameters, highest hydroxyl value 267 mg KOH/g achieved. Additionally, a mathematical model developed MATLAB software, employing fourth‐order Runge–Kutta simulated annealing optimization accurately describe kinetic behaviour reaction. numerical simulations were performed genetic algorithm, results showed good agreement between simulation experimental data, which validates model.

Language: Английский

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High toughness plant oil-based epoxy resins simultaneous with low dielectric properties

Industrial Crops and Products, Journal Year: 2023, Volume and Issue: 207, P. 117731 - 117731

Published: Nov. 10, 2023

Language: Английский

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Injecting Sustainability into Epoxy-Based Composite Materials by Using Bio-Binder from Hydrothermal Liquefaction Processing of Microalgae

Molecules, Journal Year: 2024, Volume and Issue: 29(15), P. 3656 - 3656

Published: Aug. 1, 2024

We report a transformative epoxy system with microalgae-derived bio-binder from hydrothermal liquefaction processing (HTL). The obtained not only served as curing agent for conventional resin (e.g., EPON 862), but also acted modifying to enhance the thermal and mechanical properties of resin. This game-changing epoxy/bio-binder outperformed epoxy/hardener in stability properties. Compared commercial 862/EPIKURE W product, our (35 wt.% addition respect epoxy) increased temperature 60% weight loss 394 °C 428 maximum decomposition rate 382 413 °C, while tensile, flexural, impact performance cured improved all cases by up 64%. Our research could significantly USD 38.2 billion global market epoxy-related industry providing better epoxy-based composite materials, simultaneously reducing carbon footprint relieving waste pollution.

Language: Английский

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Catalytic epoxidation of waste palm kernel oil using in situ performic acid formation

Environmental Progress & Sustainable Energy, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 14, 2025

Abstract The use of renewable resources in the epoxidation process can reduce dependence on non‐renewable petroleum and contribute to a more environmentally friendly chemical industry. This study aims investigate waste palm kernel oil as feedstock. synthesis epoxidized was conducted by reacting oil, formic acid, hydrogen peroxide one‐pot system. Currently, there is no reported literature simultaneous application catalyst for derived from industrial waste. optimum parameters were determined, including molar ratio (1.5:1), acid (0.5:1), stirring speed (300 rpm). relative conversion oxirane 88%. A mathematical model developed using numerical integration based fourth‐order Runge–Kutta method follows: = 0.894 mol·L −1 ·min , 7.420 0.086 . Based findings kinetic study, validated due its minimal simulation error.

Language: Английский

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Biodegradable Epoxy Thermosets Prepared by Mixing Diglycidyl Ether of Bisphenol A and Epoxidized Soybean Oil and Their Electrical and Mechanical Properties

Journal of Applied Polymer Science, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 21, 2025

ABSTRACT To develop a biodegradable epoxy resin matrix for high‐voltage insulating composites, petroleum‐based diglycidyl ether of bisphenol A (DGEBA) and epoxidized soybean oil (ESBO) were mixed, their biodegradability electrical mechanical properties studied. DGEBA/ESBO mixtures in the ratios 100/0, 90/10, 80/20, 70/30, 60/40, 50/50, respectively. In soil burial test, as ESBO content increased, thermosets disintegrated into smaller pieces by 4–6 months, while DGEBA thermoset without any preserved its geometry throughout degradation study 8 months. Crosslink density was studied solvent swelling method Flory–Rehner equation, glass transition temperature, Tg, measured differential scanning calorimetry, it found that crosslink Tg highest (80/20) thermoset. All strengths insulation breakdown obtained thermoset, which could be used composites.

Language: Английский

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Intensified epoxidation of soybean oil: Evaluation and experimental optimization in a slug-flow millireactor

Chemical Engineering Journal, Journal Year: 2025, Volume and Issue: unknown, P. 161345 - 161345

Published: March 1, 2025

Language: Английский

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Natural Macromolecules Used as Bioplasticizer in Polymer Materials for Food Contact Applications

Packaging Technology and Science, Journal Year: 2025, Volume and Issue: unknown

Published: March 14, 2025

ABSTRACT Synthetic plasticizers are essential additives widely used in polymer‐based products such as food packaging, toys and medical devices. Despite their functional properties, they present significant environmental human health risks due to toxicity migration behaviour. Growing awareness of these adverse effects has driven interest the development bio‐based derived from natural resources. In recent years, have emerged promising alternatives, offering advantages low toxicity, biodegradability reduced migration. Their application is particularly relevant packaging industry, where transition towards sustainable materials gained great interest, with growing use biopolymers starch, poly(lactic acid) (PLA), chitosan gelatin. Most exhibit limitations barrier, mechanical processing requiring addition improve performance. Natural provide a synergistic solution by enhancing properties while maintaining sustainability resulting materials. Furthermore, compatibility makes them highly suitable for industrial applications. This review explores advancements plasticizers, integration into biopolymer systems challenges associated industrial‐scale adoption

Language: Английский

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Preparation of epoxy resin adhesives based on high phenolic nanomodified lignin particles

International Journal of Biological Macromolecules, Journal Year: 2025, Volume and Issue: unknown, P. 142886 - 142886

Published: April 1, 2025

Language: Английский

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