Green Chemistry, Journal Year: 2024, Volume and Issue: 27(3), P. 743 - 755
Published: Dec. 3, 2024
A full-natural bionics-multiphase composite polyester with mechanical robustness, high gas barrier and chemically closed-loop properties was designed prepared using bio-based monomers single-layered mica to achieve a replacement for plastic.
Language: Английский
Small, Journal Year: 2024, Volume and Issue: unknown
Published: Sept. 16, 2024
Abstract With the depletion of petroleum resources, development sustainable alternatives for plastic substitutes has grown in importance. It is urgently desirable yet challenging to design high‐performance polyesters with extensive mechanical and prominent gas barrier properties. This work uses bio‐based PBF polyester as a matrix, “leaf‐shaped” carbon nanotube@boron nitride nano‐sheet (CNT@BNNS) covalent hetero‐junctions functional fillers, fabricate CNT@BNNS/PBF (denoted CBNP) composite films through an “in‐situ polymerizing hot‐pressing” strategy. The CNT “stem” suppresses re‐stacking BNNS “leaf”, endowing hetero‐structured CNT@BNNS illustrates superior stress transfer physical effect. covalently hetero structure high orientation degree greatly improve comprehensive performance CBNP composites, including excellent (strength 76 MPa, modulus 2.3 GPa, toughness 85 MJ m −3 , elongation at break 193%) (O 2 0.015 barrer, H O 1.1 × 10 −14 g cm −2 s −1 Pa ) properties that are much higher than pure or other‐type polyesters, most engineering plastics. Moreover, composites also boast easy recyclability, overcoming tradeoff between recycling traditional plastics, which makes competitive substitute.
Language: Английский
Citations
4
Advanced Functional Materials, Journal Year: 2025, Volume and Issue: unknown
Published: Jan. 19, 2025
Abstract Bio‐based polyethylene furandicarboxylate (PEF) plays a vital role in high‐performance packaging material for plastic replacement. However, the poor toughness blocks its practical applications. Copolymerization modification can enhance of PEF but inevitably causes decrease strength and barrier properties. Although nanofillers overall performance PEF, intrinsic incompatibility between inert inorganic nanomaterials leads to reinforcement effects. Herein, polydopamine (PDA) nanosheets/poly(ethylene‐ co ‐1,4‐cyclohexanedimethylene 2,5‐furandicarboxylate) (PECF) (denoted as PDAP) composite polyester is developed through regulation molecular interface structures. The strategy realizes situ entanglement with PECF chain segments hydrogen bonding. structure enhancement by copolymerization reinforcements promote crystallization, orientation, bridging systems, respectively. Benefiting from this multi‐scale, multi‐dimensional, multi‐component synergistical design, resultant PDAP integrates high (85 MPa), (111%), excellent gas properties (i.e., O 2 0.016 barrer, CO 0.013 H 1.4×10 −14 g cm −2 sPa) that are much higher than bio‐based materials most engineering plastics. Interestingly, such also shows superior physical recyclable, UV‐shielding, solvent‐resistant properties, making it promising competitive replacement multifunctional materials.
Language: Английский
Citations
0
Nano-Micro Letters, Journal Year: 2025, Volume and Issue: 17(1)
Published: Feb. 24, 2025
Abstract Renewable 2,5-furandicarboxylic acid-based polyesters are one of the most promising materials for achieving plastic replacement in age energy and environmental crisis. However, their properties still cannot compete with those petrochemical-based plastics, owing to insufficient molecular and/or microstructure designs. Herein, we utilize Ti 3 C 2 T x -based MXene nanosheets decorating carbon nanotube (CNT) obtaining structurally stable highly dispersed dendritic hetero-structured MXene@CNT, that can act as multi-roles, i.e., polycondensation catalyst, crystal nucleator, interface enhancer polyester. The bio-based MXene@CNT/polybutylene furandicarboxylate (PBF) (denoted MCP) nanocomposites synthesized by strategy “in situ catalytic polymerization hot-pressing”. Benefiting from multi-scale interactions (i.e., covalent bonds, hydrogen physical interlocks) hybrid structure, MCP presents exceptional mechanical strength (≈101 MPa), stiffness (≈3.1 GPa), toughness (≈130 MJ m −3 ), barrier (e.g., O 0.0187 barrer, CO 0.0264 H 1.57 × 10 −14 g cm −2 s Pa) higher than reported engineering plastics. Moreover, it also displays satisfactory multifunctionality high reprocessability (90% retention after 5 recycling), UV resistance (blocking 85% UVA rays), solvent-resistant properties. As a state-of-art high-performance multifunctional material, novel nanocomposite offers more sustainable alternative plastics packaging material fields. More importantly, our catalysis-interfacial strengthening integration opens door designing constructing polyester future.
Language: Английский
Citations
0
ACS Applied Polymer Materials, Journal Year: 2025, Volume and Issue: unknown
Published: March 31, 2025
Furan-based semiaromatic polyamide is a promising alternative to petroleum-based counterparts. However, weak and few intermolecular hydrogen bonds result in limited thermal stability amorphous properties, which could not meet the requirements of various applications. Herein, series furan-based polyamides (FPAs) were synthesized from dimethyl furan-2,5-dicarboxylate long-chain aliphatic diamines containing oxalamide with double (LADOs). A two-step melting polycondensation one pot was systematically investigated. Wide-angle X-ray diffraction differential scanning calorimetry indicate that resultant semicrystalline. Temperature-variable FTIR experiments suggested presence polymer chains. With decrease carbon chain length LADOS (except 1,5-diaminopentane-based monomer), Tm (179–257 °C) Tg (57–103 gradually increased. Thermogravimetric analysis showed Td,5% Td,max range 338 412 °C 446 473 °C, respectively. Besides, polymers exhibited excellent fluorescence characteristics chemical resistance. Finally, FPAs be depolymerized into initial monomers, indicating circular economy. Overall, these present potential as bio-based materials derived fossil fuels, this work provides strategy for high-performance materials.
Language: Английский
Citations
0
Published: Jan. 1, 2025
Language: Английский
Citations
0
Macromolecules, Journal Year: 2024, Volume and Issue: 57(15), P. 7614 - 7623
Published: July 25, 2024
Biobased polymers with excellent thermostability, mechanical properties, and optical transparency are desired in many demanding areas. In this study, a highly rigid tetravinyl compound (4V) was synthesized starting from citric acid. 4V further subjected to permethylation reaction, affording another (4MV) improved rigidity thermostability. Two series of networks were developed through the solvent-free thiol-ene coupling (or 4MV) three multifunctional thiol monomers. The exhibited similar glass transition temperature (Tg) values as compared based on 2,2′-diallyl bisphenol A, highlighting prominent 4V. 4MV higher Tg values, properties analogues same thiol. Highly transparent colorless films approximately 90% transmittance visible region (>500 nm) obtained for all polymers. These materials demonstrated moderate refractive indices (n) within range 1.5075–1.5779, along remarkably high Abbe numbers (νD) ranging 101 235. As result, these hold great potential various applications such encapsulation resins light-emitting diodes, antireflective coatings, display devices. This research paves way development biorenewable including Tg, transparency, robustness, balanced n νD values.
Language: Английский
Citations
2
Green Chemistry, Journal Year: 2024, Volume and Issue: 27(3), P. 743 - 755
Published: Dec. 3, 2024
A full-natural bionics-multiphase composite polyester with mechanical robustness, high gas barrier and chemically closed-loop properties was designed prepared using bio-based monomers single-layered mica to achieve a replacement for plastic.
Language: Английский
Citations
2