Synergetic Hybridization Strategy to Enhance the Dynamicity of Poorly Dynamic CO2‐derived Vitrimers achieved by a Simple Copolymerization Approach DOI Creative Commons
Guillem Seychal, Marta Ximenis, Vincent Lemaur

et al.

Advanced Functional Materials, Journal Year: 2024, Volume and Issue: unknown

Published: Oct. 18, 2024

Abstract Copolymerization allows tuning polymer's properties and a synergetic effect may be achieved for the resulting hybrid, i.e., outperforming of its parents as often observed in natural materials. This concept is herein applied to enhance both dynamicity vitrimeric materials using poorly dynamic hydroxyurethane non‐dynamic epoxy thermosets. The latter generates activated hydroxyl, promoting exchange reactions 15 times faster than pure polyhydroxyurethanes. strategy obtaining catalyst‐free high‐performance vitrimers from conventional epoxy‐amine formulations an easily scalable (bio‐)CO 2 ‐based yet efficient network. hybrid network exhibits modulus retention superior 95% with fast relaxation (<10 min). moieties actively participate hybrid. material can manufactured any formulation. new design networks opens door large‐scale circular structural carbon fiber composites (CFRP). CFRP reshaped welded flat plates complex geometries. degradable under mild conditions, facilitating recovery re‐use high‐added‐value fibers. accessible cost‐effective approach provides versatile range tunable epoxides, applicable across various industries minimal adjustments existing marketed products.

Language: Английский

Dynamic Covalent Bonds Enabled Carbon Fiber Reinforced Polymers Recyclability and Material Circularity DOI
Xiaotong Fan, Jie Zheng, Jayven Chee Chuan Yeo

et al.

Angewandte Chemie International Edition, Journal Year: 2024, Volume and Issue: unknown

Published: July 20, 2024

Due to their remarkable features of lightweight, high strength, stiffness, high-temperature resistance, and corrosion carbon fiber reinforced polymers (CFRPs) are extensively used in sports equipment, vehicles, aircraft, windmill blades, other sectors. The urging need develop a resource-saving environmentally responsible society requires the recycling CFRPs. Traditional CFRPs, on hand, difficult recycle due permanent covalent crosslinking polymer matrices. combination adaptable networks (CANs) with fibers (CFs) marks new development path for closed-loop recyclable CFRPs resins. In this review, we summarize most recent developments from unique paradigm dynamic polymers, CANs. These sophisticated materials diverse functions, oriented towards CFs resin sustainability, further categorized into several active domains bonds, including ester imine disulfide boronic acetal linkages, etc. Finally, possible strategies future design CFPRs by combining chemistry innovation interface science proposed.

Language: Английский

Citations

10
Sustainable epoxy vitrimer materials with imine and disulfide bonds prepared from epoxidized soybean oils DOI Creative Commons
Yanna Zhao, Yingying Zhang,

Xiaowei Bai

et al.

Industrial Crops and Products, Journal Year: 2025, Volume and Issue: 225, P. 120435 - 120435

Published: Jan. 9, 2025

Language: Английский

Citations

1
Chitosan-Enhanced Vitrimerization of Thermoset Epoxy Resins: Multiple-Dynamic Networks for Sustainable Approaches, Improved Mechanical Properties, and Rapid Stress Relaxation DOI

M. Shadmand,

Farzad Alizadeh, Mir Karim Razavi Aghjeh

et al.

ACS Applied Polymer Materials, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 9, 2025

This study explores the use of chitosan as a sustainable alternative in vitrimerization thermoset epoxy resins. Epoxy/chitosan vitrimer composites, with and without an external catalyst (zinc acetate), well epoxy/zinc acetate vitrimers reference samples, were successfully fabricated through mechanochemical ball-milling, followed by hot-pressing. Comprehensive multiscale analyses conducted, results compared existing literature. Incorporating significantly enhanced process, leading to remarkable improvements mechanical performance, solvent resistance, stress relaxation. Specifically, inclusion 15 wt % chitosan, catalyst, increased vitrimer's elastic modulus 100% tensile strength 35% virgin resin, while reducing relaxation time approximately 800 s, order magnitude lower than epoxy/cellulose reported Remarkably, presence zinc acetate, epoxy/chitosan composites further decreased 150 increasing 210% 80%, respectively, those resin. The reduction was attributed chitosan's primary amine hydroxyl groups, which facilitated multiple exchange reactions (transesterification, ester-to-amide, transamidation) acted self-catalysts for transesterification. Enhancements properties zinc-coordinated interactions within polymer networks. also investigates influence cross-linking density activation energy competitive parameters on behavior glass transition temperature (Tg) vitrimers. multiple-dynamic network rapid characteristics make them promising candidates variety applications, supporting circular economy. work represents first resins, advancing development recyclable materials.

Language: Английский

Citations

1
Epoxy vitrimers: from essence to utility DOI

H. Supriya,

Sandeep Tripathi, Neetika Singh

et al.

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
Hardener-Dependent Properties of Twice Renewable Epoxy Resins Combining Tailored Lignin Fractions and Recycled BPA DOI
Marc Comí, Brent Van Ballaer, Jaime Gracia‐Vitoria

et al.

ACS Sustainable Chemistry & Engineering, Journal Year: 2024, Volume and Issue: 12(24), P. 9279 - 9289

Published: June 5, 2024

The use of biosourced and/or recycled raw materials represents a promising strategy for making the polymer industry more renewable. In this context, both biobased lignin fractions and chemically bisphenol A (r-BPA) have been independently considered as renewable alternatives to aromatic fossil monomers. Here, thermosetting epoxies were designed by combining tailored r-BPA, while influence several hardeners on physical structure properties obtained resins was systematically investigated. To do so, phenolic groups r-BPA derived from polycarbonate waste solvent-extracted Kraft (EKL) glycidylated with epichlorohydrin. This led epoxy precursors diglycidyl ether (r-DGEBA) extracted lignin, respectively. Twenty different formulations then tailoring structural parameters resins, such hardener length functionality, epoxide/hardener (E/H) ratio, content. thermomechanical investigated structure–property relationships established, highlighting excellent tunable performance these epoxies. Finally, flexible coatings produced lower cross-link density that demonstrated performance, even 30% Overall, our results show how building blocks could be combined design superior in sustainable technical terms.

Language: Английский

Citations

3
Bio-Based Self-Healing Epoxy Vitrimers with Dynamic Imine and Disulfide Bonds Derived from Vanillin, Cystamine, and Dimer Diamine DOI Creative Commons

I. Abe,

Mitsuhiro Shibata

Molecules, Journal Year: 2024, Volume and Issue: 29(20), P. 4839 - 4839

Published: Oct. 12, 2024

The condensation reactions of 4,4'-(ethane-1,2-diylbis (oxy)) bis(3-methoxybenzaldehyde) (VV) with cystamine, 1,6-hexamenthylene diamine, and a dimer diamine (Priamine

Language: Английский

Citations

3
Conventional Thermoset Composites and Their Sustainable Alternatives with Vitrimer Matrix—Waste Management/Recycling Options with Focus on Carbon Fiber Reinforced Epoxy Resin Composites DOI Open Access

Paraskevi Markouti,

Evanthia Tzouma,

Alkiviadis S. Paipetis

et al.

Materials, Journal Year: 2025, Volume and Issue: 18(2), P. 351 - 351

Published: Jan. 14, 2025

Carbon-fiber-reinforced polymers (CFRPs) with epoxy matrices are widely applied in high-performance structural applications and represent one of the biggest classes materials urgent need for end-of-life management. Available waste management methodologies conventional thermoset composites a focus on CFRPs briefly reviewed their limitations highlighted. In quest to obtain mechanical performance, thermal stability, sustainability, research community has turned its interest develop polymer adaptable dynamic networks matrix, lately also at an interface/interphase level. The current review focuses life extension/waste options that opened through introduction covalent matrix CFRPs. processing conditions healing/repairing, welding/reshaping, and/or recycling presented detail, compared based most common exchange reactions.

Language: Английский

Citations

0
Biobased Reprintable Bis-Dynamic Covalent Photopolymer Composition for Digital Light Processing 3D Printing with Self-Healing Properties DOI
Ganesh N. Kamble, Asha SK

ACS Applied Polymer Materials, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 16, 2025

The design and formulation of an environmentally friendly, renewable, reusable biobased resin for additive manufacturing is highly sought-after. Materials that incorporate covalent adaptable network (CAN) chemistry, which facilitate recycling, show significant promise. However, it challenging to develop vitrimer materials 3D printing applications are reprintable. In this study, we present a bis-dynamic polymer derived from cystamine vanillin, featuring disulfide- imine-based dynamic bonds. methacrylate vanillin (CMAV) was designed synthesized by using under mild reaction conditions at room temperature without the requirement any catalyst. Three series formulations were created 15, 25, 35 wt % CMAV with isobornyl acrylate as reactive diluent 2,4,6-trimethylbenzoyldiphenyl phosphine oxide (TPO) photoinitiator. capabilities these validated DLP printer. resulting 3D-printed objects exhibited self-healing ability shape memory effect both ambient elevated temperatures 90 °C. reprintability confirmed heating excess diethylene triamine (DETA) in presence THF 80 °C 48 h. Subsequently, added viscous obtained after removal THF, enabling further printing.

Language: Английский

Citations

0
Biobased and Reprocessable Vitrimers Based on Cardanol-Derived Epoxy for More Sustainable Thermosets DOI

E. ALBERTINI,

Sara Dalle Vacche, Roberta Maria Bongiovanni

et al.

ACS Sustainable Chemistry & Engineering, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 24, 2025

Language: Английский

Citations

0
Vitrimers for 3D Printing Technology: Current Status and Future Perspectives DOI
Ankit Sharma,

Avtar Chand,

Inderdeep Singh

et al.

Industrial & Engineering Chemistry Research, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 27, 2025

Vitrimers are a class of advanced polymeric materials characterized by their dynamic covalent networks, which offer unique properties such as self-healing, reprocessability, and shape memory. The integration vitrimers into 3D printing technologies presents significant advancement in the field additive manufacturing, offering numerous benefits over traditional thermoplastics thermosets. use printing, leverages ability to be cured reformed under specific conditions, exposure light or heat. enable production high-resolution parts that can easily repaired recycled, addressing key environmental concerns associated with polymers. Their nature not only extends life printed components but also reduces waste promotes sustainability enabling recycling materials. Recent developments for have focused on optimizing performance, including enhancing mechanical strength, expanding range printable materials, improving efficiency process. Studies demonstrated achieve impressive high tensile elasticity, thermal stability, making them suitable various applications. continued research development hold promise advancing capabilities providing pathway more sustainable versatile By harnessing vitrimers, industry push boundaries what is possible material design functionality, leading innovative solutions complex engineering challenges. This article provides comprehensive review reported literature explores potential techniques. It offers detailed insight present trends field.

Language: Английский

Citations

0