Development and Thermo-Mechanical Analysis of Bio-based Epoxy Resin/Cardanol Blends as Matrices for Green Composites Manufacturing

Journal of Polymers and the Environment, Год журнала: 2025, Номер unknown

Опубликована: Янв. 18, 2025

Язык: Английский

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Oxidative depolymerization of lignin in a Fixed-Bed tubular membrane reactor

Separation and Purification Technology, Год журнала: 2025, Номер unknown, С. 132478 - 132478

Опубликована: Март 1, 2025

Язык: Английский

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A novel N-(2-acetamido)-2-aminoethanesulfonic acid (AASA) and Zr3C2Tx MXene-modified organosolv lignin (OL) (AASA@ Zr3C2Tx @OL) composite for simultaneous adsorption of tetracycline and U(VI)

Materials Chemistry and Physics, Год журнала: 2025, Номер unknown, С. 130726 - 130726

Опубликована: Март 1, 2025

Язык: Английский

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Recent progress towards fuels and value-added chemicals through lignin depolymerization

Journal of environmental chemical engineering, Год журнала: 2025, Номер unknown, С. 116321 - 116321

Опубликована: Март 1, 2025

Язык: Английский

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Chemically Recyclable, Hydroxycinnamic Acid‐Derived Semi‐Aromatic Polycarbonates

Journal of Polymer Science, Год журнала: 2025, Номер unknown

Опубликована: Апрель 9, 2025

ABSTRACT Polycarbonate polymers find widespread use for a variety of applications. Driven by the need to transition away from fossil‐based resources, there is increasing interest in exploring bio‐based monomers synthesis polycarbonates. One interesting class molecules that can be isolated biological including lignin, are hydroxycinnamic acids. This paper reports library aromatic diols using p ‐coumaric acid, ferulic and sinapic acid as starting materials. Using dimethyl carbonate, these polymerized generate semi‐aromatic polycarbonate homo‐ copolymers. These polycarbonates depolymerized via an organocatalyzed process afford essentially quantitative yield. The obtained this depolymerization could subsequently repolymerized, with no purification needed, regenerate original polymer identical molecular weight, providing pathway chemical recycling

Язык: Английский

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Structural Properties of Lignin

Опубликована: Янв. 1, 2025

Язык: Английский

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Lignin extraction from lignocellulosic biomass and its valorization to therapeutic phenolic compounds

Journal of Environmental Management, Год журнала: 2024, Номер 372, С. 123334 - 123334

Опубликована: Ноя. 16, 2024

Язык: Английский

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Combining isosorbide and lignin-related benzoic acids for high-Tg polymethacrylates

European Polymer Journal, Год журнала: 2023, Номер 202, С. 112595 - 112595

Опубликована: Ноя. 14, 2023

The insertion of rigid aliphatic or aromatic building blocks in polymer structures is an efficient synthetic strategy towards high-Tg materials. In the present work, we have functionalized isosorbide 5-methacrylate with various lignin-inspired esters to yield a series isosorbide-2-aryl carboxylate-5-methacrylate monomers (ArIMAs) as single regioisomers. selection phenyl carboxylate side groups included benzoate, p-cyanobenzoate, meta/para-methoxybenzoates, and different vanillic acid esters. This afforded range seven bio-based size, polarity, substitutions. Polymerizations were carried out by conventional free radical initiation obtain corresponding high molecular-weight poly(aryl methacrylate)s (PArIMAs). polymerizations evaluated solvents, including toluene, EtOAc, γ-valerolactone, 2-MeTHF, DMSO identify most suitable conditions. polymers exhibited glass transition temperatures broad range, from 80 168 °C, thermally stable up 268 °C. Furthermore, dynamic rheology experiments indicated that sufficiently for melt processing. availability combined stability make these materials attractive use high-performance plastics coatings.

Язык: Английский

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N-Doped Carbon Nitride with Embedded Pd Nanoparticles for Selective Photocatalytic Valorisation of Biomass-Derived Vanillin into Vanillyl Alcohol and 2-Methoxy-4-Methyl Phenol

ACS Applied Nano Materials, Год журнала: 2024, Номер 7(21), С. 24819 - 24832

Опубликована: Окт. 28, 2024

Efficient conversion of abundant biomass into high-value chemicals is crucial for sustainable chemical production. Herein, we report the design and synthesis a Pd nanoparticles (NPs)-embedded N-doped carbon nitride (Pd@NCN) nanocomposite photocatalytic transformation biomass-derived compounds. N-doping using DMF significantly enhanced visible light absorption, as evidenced by DRUV spectroscopy, making it suitable photocatalyst blue LED-driven reactions. Subsequent decoration with NPs remarkably improved catalyst's performance. UPS measurements revealed that NPs, their lower Fermi level higher work function compared to photoactive support, act efficient electron acceptors, promoting charge separation improving catalytic activity. This was corroborated PL, TCSPC, EIS studies. Photogenerated electrons on surface-activated hydrogen, enabling hydrogenation derivatives at room temperature. Concurrently, photogenerated holes were consumed IPA via O–H C–H, leading acetone formation. The optimized 1% [email protected] catalyst exhibited exceptional activity in vanillin (VAN), achieving 79.6% 94.4% selectivity vanillyl alcohol (VOL) within an hour. Moreover, reaction could be tuned adjusting loading time, complete VAN excellent (∼99%) 2-methoxy-4-methylphenol (MMP) 2% 4.5 h. Comprehensive characterization mechanistic studies provided insights structure–activity relationship, paving way development advanced NPs-based photocatalysts challenging valorization ambient conditions.

Язык: Английский

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Eugenol’s journey to high-performance and fire-retardant biobased thermosets

Current Opinion in Green and Sustainable Chemistry, Год журнала: 2024, Номер 51, С. 100988 - 100988

Опубликована: Ноя. 29, 2024

Язык: Английский

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