High glass transition catalyst-free fire-retardant polybenzoxazine vitrimer through solventless one-pot method DOI Creative Commons
Festus Ifeanyi Anagwu, Alexandros A. Skordos

Published: Dec. 6, 2023

A high-temperature polybenzoxazine vitrimer has been synthesised by a solventless one-pot method involving the Mannich condensation of phenolic disulphide, paraformaldehyde and aniline. The glass transition temperature 155°C exhibits thermosetting behaviour below temperature. Dynamic bond exchange enabled disulphide metathesis associated with topological freezing 78°C results in healing over system is reprocessable at 190°C, glassy modulus 3.6 GPa, limiting oxygen index (LOI) 40.5%. combination character, ease synthesis, good processability, fire retardancy reprocessability this make it an attractive candidate material solution as matrix for recyclable self-repairable aerospace continuous fibre composites.

Language: Английский

High strength, self-healing and hydrophobic fully bio-based polybenzoxazine reinforced pine oleoresin-based vitrimer and its application in carbon fiber reinforced polymers DOI
Xuan Zhou, Minggui Shen, Fei Fu

et al.

Chemical Engineering Journal, Journal Year: 2024, Volume and Issue: 484, P. 149585 - 149585

Published: Feb. 12, 2024

Language: Английский

Citations

13
Recent Progress and Future Perspective in Slide-Ring Based Polymeric Materials DOI Creative Commons

Shota Ando,

Kohzo Ito

Macromolecules, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 23, 2025

Language: Английский

Citations

1
Polybenzoxazine-based covalent adaptable networks: A mini-review DOI Creative Commons
Antoine Adjaoud, Laura Puchot, Pierre Verge

et al.

Polymer, Journal Year: 2023, Volume and Issue: 287, P. 126426 - 126426

Published: Oct. 25, 2023

Benzoxazines represent a class of thermoset resins known for their exceptional thermal, fire, and mechanical properties. These find wide applications in various industries, including composites electronic components. However, like conventional thermosets, benzoxazines have limitations terms end-of-life options, typically being landfilled or incinerated. To address this concern, researchers been exploring the incorporation dynamic bonds into structure polybenzoxazines to add functionalities such as reprocessability, self-healing, recycling capabilities, develop polybenzoxazine-based covalent adaptable networks (CANs). This mini-review offers an overview recent endeavors focused on introduction within polybenzoxazine structures. It emphasizes synergies between molecular exchanges, transesterification disulfide metathesis, provides comparative summary properties achieved by materials developed context. By leveraging strengths benzoxazine structures, aims foster exploration development innovative approaches that combine unique CANs, enabling more sustainable environmentally friendly materials.

Language: Английский

Citations

19
Vitrimers based on block copolymers with diverse block sequences DOI Creative Commons

Siraphat Weerathaworn,

Andreas Meyer, Volker Abetz

et al.

Polymer, Journal Year: 2024, Volume and Issue: 308, P. 127311 - 127311

Published: June 26, 2024

Vitrimers based on block copolymers give access to adaptable polymer networks where the resulting properties can be adjusted not only by vitrimer chemistry itself but also influenced structure of copolymer. In this work, linear AB, ABA, and BAB are introduced as backbones in vinylogous urethane vitrimers produce crosslinked materials that reprocessable have a wide range tunable mechanical properties. The narrow-disperse were synthesized photoiniferter reversible addition-fragmentation chain transfer polymerization (photoRAFT). Two different types hydrophobic A blocks, poly(methyl methacrylate) poly(ethyl with higher glass transition temperature compared hydrophilic B block, poly(2-hydroxyethyl methacrylate), chosen. carries functional groups for further modification obtain acetoacetylated side groups, which then transformed crosslinks. It has been found architectures well alkyl substituents influence final performance vitrimers. By adjusting sequences, varied from hard tough elastic corresponding BAB, AB copolymer vitrimers, respectively. These self-healing shape-memory

Language: Английский

Citations

6
Solvent-free preparation of imine vitrimers: leveraging benzoxazine crosslinking for melt processability and tunable mechanical performance DOI
Levi J. Hamernik, William Guzman, Jeffrey S. Wiggins

et al.

Journal of Materials Chemistry A, Journal Year: 2023, Volume and Issue: 11(38), P. 20568 - 20582

Published: Jan. 1, 2023

Orthogonal benzoxazine crosslinking enables the solvent-free preparation of dynamic imine vitrimers with tailorable thermomechanical performance, efficient reprocessability, and chemical degradation.

Language: Английский

Citations

16
Weldable, Reprocessable, and Water‐resistant Polybenzoxazine Vitrimer Crosslinked by Dynamic Imine Bonds DOI
Sujuan Zhang,

Jianjun Yi,

Jiming Chen

et al.

ChemSusChem, Journal Year: 2024, Volume and Issue: 17(14)

Published: March 4, 2024

Abstract Traditional polybenzoxazine thermosets cannot be reprocessed or recycled due to the permanent crosslinked networks. The dynamic exchangeable characteristics of imine bonds can impart networks with reprocessabilities and recyclabilities. This study reported a weldable, reprocessable, water‐resistant vitrimer (C‐ABZ) by bonds. It was synthesized through condensation reaction between an aldehyde‐containing benzoxazine oligomer (O‐ABZ) 1,12‐dodecanediamine. resulting C‐ABZ able welded exchange tensile strengths after three cycles hot‐pressing were 76.7, 81.3, 70.8, 58.1 Mpa, corresponding strength recovery ratios 74.1 %, 78.6 68.4 56.1 respectively. Furthermore, backbone significantly improved water resistance After immersing in for 30 days at room temperature, weight gain less than 1 % retention ratio 59.5 Mpa 57.5 Although heat decreased slightly increased cycles, glass transition temperature ( T g, tanδ ) 150 °C retained third hot‐pressing. Overall, these findings demonstrate that possesses excellent comprehensive performances.

Language: Английский

Citations

6
Cyclodextrins‐Based Polyrotaxanes: From Functional Polymers to Applications in Electronics and Energy Storage Materials DOI

Ruichun Du,

Tianwei Bao,

Deshuo Kong

et al.

ChemPlusChem, Journal Year: 2024, Volume and Issue: 89(7)

Published: April 3, 2024

The concept of polyrotaxane comes from the rotaxane structure in supramolecular field. It is a mechanically interlocked assembly composed linear polymer chains and cyclic molecules. Over recent decades, synthesis application polyrotaxanes have seen remarkable growth. Particularly, cyclodextrin-based been extensively reported due to low-price raw materials, good biocompatibility, ease modification. Hence, it also one most promising interlocking supramolecules for wide industrialization future. Polyrotaxanes are widely introduced into materials such as elastomers, hydrogels, engineering polymers improve their mechanical properties or impart functionality materials. In these acts slidable cross-linker dissipate energy through sliding assist dispersing stress concentration cross-linked network, thereby enhancing toughness Further, unique sliding-ring effect has pioneered advancements stretchable electronics storage This includes innovative use conductive composite binders anodes, addressing critical challenges fields. this mini-review, our focus highlight current progress potential wider applications future, underlining transformative impact across various domains material science.

Language: Английский

Citations

6
Research Progress of Bio‐Based Polybenzoxazine Materials DOI
Xuan Zhou, Fei Fu, Minggui Shen

et al.

Advanced Sustainable Systems, Journal Year: 2023, Volume and Issue: 8(2)

Published: Oct. 4, 2023

Abstract As a new type of thermosetting resin, polybenzoxazine resin (PBz) has the advantages flexible molecular design, excellent thermal stability, and mechanical properties. It application potential in many fields such as aerospace, hydrophobic flame retardant, anti‐corrosion, antibacterial, electronic communication. Unlike traditional resins, PBz can be made with natural renewable resources addition to petrochemical raw materials. At present, synthesized monomers from breakthroughs material sources performance improvement. In this work, preparation methods research progress bio‐based benzoxazine (BOZ) different phenol amine past 10 years are reviewed. The existing shortcomings improvement functional materials analyzed, future direction is prospected.

Language: Английский

Citations

13
On the cyclic delamination-healing capacity of vitrimer-based composite laminates DOI Creative Commons
Henri Perrin,

Régis Vaudemont,

Doriane Del Frari

et al.

Composites Part A Applied Science and Manufacturing, Journal Year: 2023, Volume and Issue: 177, P. 107899 - 107899

Published: Nov. 14, 2023

This study aims to investigate the self-healing capability of a composite laminate composed novel bio-based benzoxazine vitrimers when subjected delamination-healing cycles. The is manufactured using compression resin transfer moulding. To quantify interlaminar shear strength (ILSS) and induced damage, three-point bending tests were conducted on short-beam specimens. healing interfacial damages was achieved by applying pressure (1 MPa) at 170 °C. Three experiments performed with different thermal cycling durations: 1, 10, 60 minutes. extent evaluated through four repetitions Despite gradual decrease in ILSS values each cycle, specimens 60-minute process exhibit remarkable recovery. After three cycles, 80 % restored, highlighting highly efficient vitrimer-based composite.

Language: Английский

Citations

13
Environmentally Friendly Sustainable Thermoset Vitrimer-Containing Polyrotaxane DOI Creative Commons

Shota Ando,

Masaki Hirano,

Lisa Watakabe

et al.

ACS Materials Letters, Journal Year: 2023, Volume and Issue: 5(12), P. 3156 - 3160

Published: Oct. 31, 2023

Durable green plastics with extended lifespans have self-healing properties and shape memory are chemically recyclable marine biodegradable. These attracting attention in applications such as adhesives carbon fiber composite materials. Vitrimers satisfy many of these requirements, terms reprocessability self-healing. Herein, we report significant improvements the vitrimers induced by ester-exchange reaction between polyester-grafted polyrotaxane (PR) ester bonds epoxy resin vitrimer to achieve uniform molecular dispersion PR. The optimal incorporated PR (VPR) exhibited enhanced toughness, an elongation at break 5.3 times greater than that a devoid PR; it also showed properties, was recycled 10 faster, recovered twice fast. results can be ascribed sliding diffusion motion PR, which lowers energy required for transesterification. Furthermore, VPR 25 wt % biodegradation following exposure seawater 30 days. findings may lead development environmentally friendly exhibit most circular economy.

Language: Английский

Citations

12