Recent Advances and Prospects in High‐Performance Bio‐Based Phthalonitrile Resins

Advanced Functional Materials, Год журнала: 2024, Номер 34(51)

Опубликована: Авг. 28, 2024

Abstract Phthalontirile resins are renowned as the most heat‐resistant polymeric materials and exhibit exceptional performance under harsh conditions. Consequently, phthalonitrile thermosets offer potential to substitute metals in hot parts, thereby broadening operational limits of plastic high‐tech applications. Given their unique combination properties, phthalonitriles have garnered significant demand across sectors such aerospace, automotive, electronics, renewable energy. With industrial production application recently initiated several countries, questions regarding sustainability these naturally arisen. Thermosetting materials, owing highly cross‐linked architecture, cannot be recycled, necessitating adoption synthetic methods utilizing bio‐feedstock raw green protocols mitigate environmental impact. The present prospective review summarizes analyzes current state‐of‐the‐art bio‐based discusses directions for research development new areas, with a focus on challenge maintaining high‐performance levels during transition materials.

Язык: Английский

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Triple Effects of Fe³⁺ for the Integration of Mechanical Robustness, Reprocessability, and Unprecedented Thermal Stability into Polydimethylsiloxane

Macromolecules, Год журнала: 2025, Номер unknown

Опубликована: Март 25, 2025

Язык: Английский

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Recycling reinvented: Converting PET bottle waste into 3D printable PCR polypropylene vitrimers for a sustainable future

Chemical Engineering Journal, Год журнала: 2025, Номер unknown, С. 162432 - 162432

Опубликована: Апрель 1, 2025

Язык: Английский

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Direct Restoration of Photocurable Cross-linkers for Repeated Light-based 3D Printing of Covalent Adaptable Networks

Materials Horizons, Год журнала: 2024, Номер unknown

Опубликована: Янв. 1, 2024

Photocurable dynamic cross-linkers based on β-amino esters have been successfully synthesized. The direct restoration of such cross-linkers, enabled by a catalyst- and solvent-free protocol, is established for repeated DLP 3D printing.

Язык: Английский

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Enabling the Reprocessability and Debonding of Epoxy Thermosets Using Dynamic Poly(β‐Amino Amide) Curing Agents

Advanced Functional Materials, Год журнала: 2024, Номер unknown

Опубликована: Дек. 30, 2024

Abstract Epoxy resins, by showing outstanding performances, stand out as the most applied materials in thermoset products. However, their excellent properties, associated with covalently cross‐linked structures, come at expense of recyclability, thus posing environmental and regulatory challenges. Herein, starting from recently explored reversibility robust poly(β‐amino amide)s, dynamic curing agents are synthesized a one‐pot procedure for use preparation epoxy‐derived networks. The obtained retain desirable properties while being fully (re)processable, high temperature‐dependent viscoelasticity (activation energy (E ) ≈230 to 270 kJ mol −1 ). Moreover, this new generation epoxy shows resistance hydrolysis creep elevated temperatures (up 120 °C). As an entry point further applications, reversible implemented adhesive formulations, showcasing lap shear strengths that comparable commercial hardeners 9 MPa). β‐amino amide groups provide adhesives additional functionality heat‐triggered deconstruction (130 150 °C), re‐bonding capacity up 80% recovery lap‐shear strength. To encourage industrial adoption, cost‐effective, drop‐in synthesis protocol is developed using only bulk chemicals, hence facilitating practical implementation.

Язык: Английский

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Development of High-Aspect-Ratio Soft Magnetic Microarrays for Magneto-Mechanical Actuation via Field-Induced Injection Molding

Polymers, Год журнала: 2024, Номер 16(21), С. 3003 - 3003

Опубликована: Окт. 25, 2024

Magnetorheological elastomers (MREs) are in demand the field of high-tech microindustries and nanoindustries such as biomedical applications soft robotics due to their exquisite magneto-sensitive response. Among various MRE applications, programmable actuators emerging promising robots because combined advantages excellent flexibility precise controllability a magnetic system. Here, we present development magnetically microarray through field-induced injection molding using MREs, which consist styrene-ethylene/butylene styrene (SEBS) elastomer carbonyl iron powder (CIP). The ratio CIP/SEBS matrix was designed maximize CIP fraction based on critical solids loading. Further, part design magnetization distribution micropillar arrays, magnetorheological response molten composites analyzed static dynamic viscosity results for both off states, reflected particle dipole interaction subsequent alignment during process. To develop high-aspect-ratio microarray, X-ray lithography applied prepare sacrificial molds with height-to-width 10. achieve parallel direction along columns, consequently, arrays successfully achieved uniform large bending actuation up approximately 81° an field. This study suggests that process offers manufacturing approach build actuator.

Язык: Английский

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The conformational preference of dynamic crosslinker modulates the ‘closed-loop’ circular economy in polypropylene vitrimer

Chemical Engineering Journal, Год журнала: 2024, Номер unknown, С. 158696 - 158696

Опубликована: Дек. 1, 2024

Язык: Английский

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