Macromolecular Research, Journal Year: 2024, Volume and Issue: unknown
Published: Oct. 22, 2024
Language: Английский
Science, Journal Year: 2024, Volume and Issue: 384(6692)
Published: April 11, 2024
Epoxy resin thermosets (ERTs) are an important class of polymeric materials. However, owing to their highly cross-linked nature, they suffer from poor recyclability, which contributes unacceptable level environmental pollution. There is a clear need for the design inherently recyclable ERTs that based on renewable resources. We present synthesis and closed-loop recycling fully lignocellulose-derivable epoxy (DGF/MBCA), prepared dimethyl ester 2,5-furandicarboxylic acid (DMFD), 4,4'-methylenebis(cyclohexylamine) (MBCA), glycidol, displays excellent thermomechanical properties (a glass transition temperature 170°C, storage modulus at 25°C 1.2 gigapascals). Notably, material undergoes methanolysis in absence any catalyst, regenerating 90% original DMFD. The diamine MBCA glycidol can subsequently be reformed by acetolysis. Application DGF/MBCA plant fiber composites demonstrated.
Language: Английский
Citations
45
Progress in Materials Science, Journal Year: 2024, Volume and Issue: 145, P. 101307 - 101307
Published: April 21, 2024
Language: Английский
Citations
26
Progress in Polymer Science, Journal Year: 2025, Volume and Issue: unknown, P. 101935 - 101935
Published: March 1, 2025
Language: Английский
Citations
3
Reactive and Functional Polymers, Journal Year: 2024, Volume and Issue: 195, P. 105825 - 105825
Published: Jan. 4, 2024
Two new vitrimeric materials have been studied for potential additive manufacturing applications such as 3D-printing. A monomer containing disulfide bonds and β-hydroxyesters was easily synthesized from two low-cost commercially available reagents. Another disulfide-containing comparison purposes. Materials were prepared through a UV-light radical polymerization of methacrylates. The addition reactive diluents poly(ethylene glycol) methyl ether methacrylate (PEGMA) ethylene glycol phenyl (EGPMA) necessary to achieve suitable viscosity the curing well their printability. process controlled by FTIR. Thermomechanical properties investigated means DMTA analysis revealing near-ambient Tg values. Stress relaxation tests revealed that both capable relax 63% initial stress in less than 10 min at 110 °C. recyclability achieved, mechanical thermomechanical recycled samples compared virgin ones great recovery properties. Finally, Digital Light Processing (DLP) technique used print complex structures with high resolution highlighting these 3D printing.
Language: Английский
Citations
13
ACS Sustainable Chemistry & Engineering, Journal Year: 2024, Volume and Issue: 12(18), P. 6811 - 6826
Published: April 23, 2024
Creating eco-friendly and sustainable polymers is one of the most important challenges faced by polymer scientists, be it in academia or industries around world. Dwindling fossil fuel reserves, petrochemical price increases, greenhouse gas emissions, exacerbation global warming are key forces behind hunt for renewable feedstocks polymers. Biobased polyesters have garnered significant attention to meet this requirement due their flexible properties broad applications. 2,5-Furandicarboxylic acid (FDCA), a spotlighted rigid diacid monomer obtained from agricultural biomass, represents enormous potential substitute well-known petroleum-based terephthalic (TPA). From perspective, review focuses on recent developments fabricating FDCA-based polyesters, including aliphatic aromatic counterparts. The latest research innovation synthetic techniques, catalysts, optimization as well FDCA polyester applications daily life such bottles, packaging materials, textiles, coatings also covered. Additional aspects influence FDCA-isomeric exchange preparation, crystallinity, mechanical, barrier discussed. Finally, emphasis placed recycling cycle assessment biobased poly(ethylene 2,5-furandicarboxylate) (PEF) comparison polyethylene terephthalate (PET), embracing sustainable, circular technologies greener future.
Language: Английский
Citations
12
International Journal of Biological Macromolecules, Journal Year: 2024, Volume and Issue: 259, P. 129327 - 129327
Published: Jan. 12, 2024
Language: Английский
Citations
11
ACS Applied Polymer Materials, Journal Year: 2024, Volume and Issue: 6(6), P. 3364 - 3372
Published: March 14, 2024
Imine-based vitrimers were prepared from synthesized diimine-dimethacrylate monomer derived biobased vanillin. First, a methacrylate derivative starting vanillin was synthesized. The diimine by condensation of the aldehyde groups two units with amine hexamethylenediamine (HMDA). product used in formulations containing ethylene glycol phenyl ether (EGPMA) as reactive diluent for customization final material properties and cured exposure to ultraviolet (UV)-light using suitable radical photoinitiators or else temperature thermal initiator. Materials glass transition temperatures (Tgs) ranging 70 90 °C prepared, showing good stability mechanical thermomechanical properties. evaluation their vitrimeric characteristics revealed that all materials achieved stress-relaxation factor (σ = 0.37σ0) less than 130 s at 160 °C, photocured exhibiting faster relaxation rates. catalytic effect phosphine oxide imine metathesis has also been evidenced. All could be mechanically recycled completely solubilized two-step degradation process, putting evidence potential use carbon fiber-reinforced composites (CFRCs). In addition, they demonstrated promising self-repairing abilities. Finally, proof concept, it established these effectively processed Digital Light Processing three-dimensional (3D) Printer (DLP), resulting fabrication complex shapes high resolution.
Language: Английский
Citations
9
Industrial Crops and Products, Journal Year: 2025, Volume and Issue: 225, P. 120435 - 120435
Published: Jan. 9, 2025
Language: Английский
Citations
1
International Polymer Processing, Journal Year: 2025, Volume and Issue: unknown
Published: Jan. 20, 2025
Abstract Concerns about the effect on environment and non-renewable nature of plastics have sparked a substantial field study towards creation recyclable polymers. Vitrimers are potential class reusable polymers that recently attracted lot interest. Like conventional thermosets in strength, durability, chemical resistance, these materials offer added benefit being at end their useful life. Their structure, which includes dynamic covalent crosslinks to provide stability while enabling reprocessing, is credited with this special characteristic. We lay out an overview recent developments applications epoxy based vitrimeric by using different types adaptable networks (CANs) – single, dual triple paper attention design tactics make it easier create circular future. Covalent Adaptable Networks (CAN), novel polymer family can bridge gap between thermoplastics, emerged years uses chemistry crosslinked networks. The was enhanced 2011 Leibler colleagues when they introduced notion vitrimers, retain integrity network even after heating allow connections be reallocated within them associative exchange reactions. This review also demonstrates how vitrimer community paying need for sustainable material development demonstrating use biobased building blocks synthesis high-performing vitrimers. Having outlined primary characteristics commercialization vitrimers emphasized portray benefits self-healing, malleability, orthogonal processability, various shape memories along solutions synthetic materials.
Language: Английский
Citations
1
European Polymer Journal, Journal Year: 2023, Volume and Issue: 196, P. 112278 - 112278
Published: July 4, 2023
Language: Английский
Citations
22