One-Step Synthesis of Waterborne Epoxidized Lignin Nanoparticles with High Epoxy Value and Stability for High-Strength Adhesives DOI
Jiajun Liu, Yuan Liu,

Zhiyi Hou

et al.

ACS Sustainable Chemistry & Engineering, Journal Year: 2024, Volume and Issue: 12(42), P. 15376 - 15386

Published: Oct. 7, 2024

Lignin, being the most abundant renewable aromatic polymer, exhibits immense potential in sustainable biobased epoxy adhesives. However, tedious preparation process and uncontrolled homopolymerization of epoxidized lignin hinder their large-scale production. Herein, we propose a facile one-step strategy to synthesize high-performance waterborne lignin-based adhesive based on high selectivity phenol-epoxy reaction. Owing acidity difference between phenol aliphatic hydroxyl, phenolic hydroxyl groups can be preferentially initiated with groups, which inhibit reaction polyglycidol chain propagation. The resulting nanoparticles (ELNPs) feature nanoscale (150–250 nm), low molecular weight, value (∼3.84 mmol g–1). ELNP colloidal dispersions possess zeta potentials (−34.20 mV) impressive long-term storage stability (temperature = 4–60 °C, pH 2–12). use cost-effective ELNPs as wood has shown competitive shear strength ∼14.89 MPa, comparable those commercial bisphenol A resin phenol-formaldehyde resin. thermo-curing demonstrate excellent chemical solvent resistance thermal (∼395 °C). Additionally, fabrication demonstrates good scalability (≥15 kg) viability (472 €/ton) This synthetic provides promising pathway for producing cost-efficient resins that used

Language: Английский

Ductile, High-Lignin-Content Thermoset Films and Coatings DOI Creative Commons
Alice Boarino,

Justine Charmillot,

Monique Bernardes Figueirêdo

et al.

ACS Sustainable Chemistry & Engineering, Journal Year: 2023, Volume and Issue: 11(46), P. 16442 - 16452

Published: Nov. 9, 2023

In the context of transitioning toward a more sustainable use natural resources, application lignin to substitute commonly utilized petroleum-based plastics can play key role. Although is highly available at low cost and presents interesting properties, such as antioxidant UV barrier activities, its limited by reactivity, which consequence harsh conditions normally used extract from biomass. this work, glyoxylic acid (GA lignin), rich in carboxylic groups hence reactive epoxy cross-linkers, presented. GA lignin, directly extracted biomass via one-step aldehyde-assisted fractionation process, allowed preparation thermoset films coatings simple reaction with poly(ethylene glycol) diglycidyl ether glycerol cross-linkers. This allows one prepare freestanding containing up 70 wt % tunable mechanical properties covalently surface-attached 90 high solvent resistance. Both display combine excellent activity visible transparency, attractive for applications food packaging.

Language: Английский

Citations

12
Synthesis and Characterization of Poly(lactic acid) Composites with Organosolv Lignin DOI Creative Commons
Zoi Terzopoulou, Eleftheria Xanthopoulou,

Nikolaos Pardalis

et al.

Molecules, Journal Year: 2022, Volume and Issue: 27(23), P. 8143 - 8143

Published: Nov. 23, 2022

Lignin, being one of the main structural components lignocellulosic biomass, is considered most abundant natural source phenolics and aromatics. Efforts for its valorisation were recently explored as it mostly treated waste from heat/energy production via combustion. Among them, polymer-based lignin composites are a promising approach to both valorise fine tune properties polymers. In this work, organosolv lignin, beech wood, was used fillers in poly (lactic acid) (PLA) matrix. The PLA/lignin prepared using melt mixing masterbatches with neat PLA three different contents: 0.5, 1.0 2.5 wt%. Lignin as-isolated, biomass pretreatment/fractionation process after 8 h ball milling. characterised Scanning Electron Microscopy (SEM), Fourier Transform Infrared Spectroscopy (FTIR) spectroscopy, X-ray Diffraction (XRD), Differential Calorimetry (DSC). Additionally, their antioxidant activity assessed 2,2-Diphenyil-1-picrylhydrazyl (DPPH) method, colour measured colorimeter mechanical evaluated tensile testing. Ball milling, at least under conditions applied study, did not induce further substantial decrease already relatively small primary particles ~1 μm. All produced had uniform dispersion lignin. Compression-moulded films successfully prepared, they coloured brown, ball-milled giving slightly lighter comparison as-received Hydrogen bonding detected between composites, crystallization suppressed by suppression less pronounced showed significantly improved activity, maintained filler content 1

Language: Английский

Citations

18
Effect of Electron Beam Irradiation on the Percentage Loss of Tensile Modulus of Epoxy Polymer DOI Open Access

Lingzhi Cong,

Zhibin Guo,

Xin Zhang

et al.

Polymers, Journal Year: 2025, Volume and Issue: 17(4), P. 447 - 447

Published: Feb. 8, 2025

Epoxy resins are critical materials in aerospace applications, yet their mechanical properties, specifically the tensile modulus, can be significantly compromised when exposed to electron irradiation space environments. To thoroughly examine this degradation, we developed an integrated research approach combining vacuum experiments with multi-scale simulations. Coarse-grained (CG) and Monte Carlo (MC) methods were employed generate necessary models primary knock-on atom (PKA) data, while molecular dynamics (MD) simulations conducted model processes. Our findings reveal that modulus percentage loss of epoxy resin stabilizes as dose approaches 1.0×101⁵ eV/cm2. The strong agreement between experimental simulation results validates accuracy methodology. In systems studied different degrees cross-linking, leads increase low cross-linked structures a maximum 21.46%, it decrease high 8.03%. This has been successfully applied investigate trends causes changes after irradiation. It used explore properties wider range polymers

Language: Английский

Citations

0
Improving wear resistance of epoxy resin using bio-oil from hemp biomass: a sound strategy to reduce environmental impact DOI Creative Commons
Donatella Duraccio, Mattia Di Maro,

F.P. Vaccaro

et al.

Journal of Cleaner Production, Journal Year: 2025, Volume and Issue: unknown, P. 145003 - 145003

Published: Feb. 1, 2025

Language: Английский

Citations

0
Mechanical properties of basalt fiber and Phyllanthus emblica seed particulate reinforced epoxy composites DOI Creative Commons
Suhas Yeshwant Nayak, Anupama Hiremath, Mohan Menon

et al.

Cogent Engineering, Journal Year: 2025, Volume and Issue: 12(1)

Published: April 3, 2025

Language: Английский

Citations

0
Advancing biomass valorization with zeolite catalysts: Focus on oxidative transformations DOI Creative Commons
Foteini F. Zormpa,

Philipp Treu,

Erisa Saraçi

et al.

Sustainable Chemistry for the Environment, Journal Year: 2025, Volume and Issue: unknown, P. 100249 - 100249

Published: April 1, 2025

Language: Английский

Citations

0
Lignin-Reinforced Thermoset Coatings for Extreme Conditions of Temperature and Pressure DOI
Tejasvi Laxminarayan, Narayanan Rajagopalan,

Albert Timm Dickmeiss

et al.

ACS Sustainable Resource Management, Journal Year: 2025, Volume and Issue: unknown

Published: May 22, 2025

Language: Английский

Citations

0
Covalently bound humin-lignin hybrids as important novel substructures in organosolv spruce lignins DOI

Petter Paulsen Thoresen,

Heiko Lange, Ulrika Rova

et al.

International Journal of Biological Macromolecules, Journal Year: 2023, Volume and Issue: 233, P. 123471 - 123471

Published: Feb. 1, 2023

Language: Английский

Citations

9
Current Technological Status and Future Prospect of Biojet Fuel Production DOI
Preeti Yadav,

Yatika Dixit,

Arun Kumar Sharma

et al.

Clean Energy Production Technologies, Journal Year: 2024, Volume and Issue: unknown, P. 229 - 272

Published: Jan. 1, 2024

Language: Английский

Citations

3
Sustainable alliance between nanocellulose and biobased polyfurfuryl alcohol DOI Creative Commons
Eleni Psochia, Pierre Delliere, Rafael Sánchez

et al.

Industrial Crops and Products, Journal Year: 2024, Volume and Issue: 212, P. 118346 - 118346

Published: March 6, 2024

Furfuryl alcohol is amongst the top platform chemicals within a modern biorefinery and widely used for poly (furfuryl alcohol) (PFA) synthesis. Nanocellulose addition to PFA can yield production of fully biomass-derived nanocomposite thermosets with improved thermomechanical properties. However, limited studies have been conducted due cellulose's hydrophilic nature its incompatibility polymer substrates. This study shows successful incorporation cellulose nanofibers nanocrystals in matrix, 4 different loading levels each type additive. Microscopy observations were employed determine dispersion into substrate, while composites' thermal properties slightly improved. A remarkable increase glass transition temperature (Tg) up 30 °C was noted all composite materials, compared neat PFA. In particular, storage modulus rubbery state significantly higher when level above 0.5 wt%. Finally, it found that FA polymerization aqueous conditions enhance formation carbonyl species through furan opening reactions, thus allowing more hydroxyls interact matrix.

Language: Английский

Citations

3