Fabrication of Woven Jute Fiber Epoxy Bio-Composites through the Epoxy/Thiol-Ene Photopolymerization Technique

Ortiz, Ricardo Acosta; Yáñez‐Macías, Roberto; Herrera, José de Jesus Ku; Valdez, Aida Esmeralda García

doi:10.3390/polym15010060

Cited by 5 publications

(2 citation statements)

References 40 publications

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“…Compared with similar EP composite materials using lowconcentration metal fillers or structural, CFM/EP has excellent compression and bending strength (Figure 6o). [26,[80][81][82][83][84][85][86][87][88][89][90][91][92] In summary, the CF@NiCoMOF-800 provides a promising solution for reducing the mass percent of carbon materials and specific surface area, maintaining excellent MA properties simultaneously eliminating the impact on mechanical properties.…”

Section: Resultsmentioning

confidence: 99%

Cation Bimetallic MOF Anchored Carbon Fiber for Highly Efficient Microwave Absorption

Zhang,

Li,

Shi

et al. 2024

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Carbon fiber (CF) is a potential microwave absorption (MA) material due to the strong dielectric loss. Nevertheless, owing to the high conductivity, poor impedance matching of carbon‐based materials results in limited MA performance. How to solve this problem and achieve excellent MA performance remains a principal challenge. Herein, taking full advantage of CF and excellent impedance matching of bimetallic metal–organic frameworks (MOF) derivatives layer, an excellent microwave absorber based on micron‐scale 1D CF and NiCoMOF (CF@NiCoMOF‐800) is developed. After adjusting the oxygen vacancies of the bimetallic MOF, the resultant microwave absorber presented excellent MA properties including the minimum reflection loss (RLmin) of −80.63 dB and wide effective absorption bandwidth (EAB) of 8.01 GHz when its mass percent is only 5 wt.% and the thickness is 2.59 mm. Simultaneously, the mechanical properties of the epoxy resin (EP)‐based coating with this microwave absorber are effectively improved. The hardness (H), elastic modulus (E), bending strength, and compressive strength of CF@NiCoMOF‐800/EP coating are 334 MPa, 5.56 GPa, 82.2 MPa, and 135.8 MPa, which is 38%, 15%, 106% and 53% higher than EP coating. This work provides a promising solution for carbon materials achieving excellent MA properties and mechanical properties.

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Section: Resultsmentioning

confidence: 99%

Cation Bimetallic MOF Anchored Carbon Fiber for Highly Efficient Microwave Absorption

Zhang,

Li,

Shi

et al. 2024

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“…Similarly, Acosta et al [ 95 ] studied substituting or reducing a commercial greenpoxy 28 material obtained from plant and vegetable origin into a reinforced composite. The authors explain that it is possible to treat the composite to reduce its amount in the preparation of elastomers.…”

Section: Bio-based and Biodegradable Polyester And Polyether Elastomersmentioning

confidence: 99%

Recent Developments in Synthesis, Properties, Applications and Recycling of Bio-Based Elastomers

Burelo,

Martínez,

Hernández-Varela

et al. 2024

Molecules

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In 2021, global plastics production was 390.7 Mt; in 2022, it was 400.3 Mt, showing an increase of 2.4%, and this rising tendency will increase yearly. Of this data, less than 2% correspond to bio-based plastics. Currently, polymers, including elastomers, are non-recyclable and come from non-renewable sources. Additionally, most elastomers are thermosets, making them complex to recycle and reuse. It takes hundreds to thousands of years to decompose or biodegrade, contributing to plastic waste accumulation, nano and microplastic formation, and environmental pollution. Due to this, the synthesis of elastomers from natural and renewable resources has attracted the attention of researchers and industries. In this review paper, new methods and strategies are proposed for the preparation of bio-based elastomers. The main goals are the advances and improvements in the synthesis, properties, and applications of bio-based elastomers from natural and industrial rubbers, polyurethanes, polyesters, and polyethers, and an approach to their circular economy and sustainability. Olefin metathesis is proposed as a novel and sustainable method for the synthesis of bio-based elastomers, which allows for the depolymerization or degradation of rubbers with the use of essential oils, terpenes, fatty acids, and fatty alcohols from natural resources such as chain transfer agents (CTA) or donors of the terminal groups in the main chain, which allow for control of the molecular weights and functional groups, obtaining new compounds, oligomers, and bio-based elastomers with an added value for the application of new polymers and materials. This tendency contributes to the development of bio-based elastomers that can reduce carbon emissions, avoid cross-contamination from fossil fuels, and obtain a greener material with biodegradable and/or compostable behavior.

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Development of shape memory epoxy resin/polyethylene glycol film based on molecular dynamics simulation and performance investigation

Hu,

Zhai,

Shen

et al. 2024

J of Applied Polymer Sci

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Based on the molecular dynamics (MD) simulation of glass transition temperature (Tg) and hydrogen bonding in the composite system of epoxy resin (Ep) and polyethylene glycol (PEG), this work developed shape memory Ep/PEG (EpP) films with controllable thermal response, recycling and reprocessing functions using melt dispersion and polymerizing‐pressing processes. EpP films with different PEG contents exhibit excellent shape memory performance, among which the shape recovery rate of EpP‐5 film can reach 92.7%, which can recover from complex structures to the initial shape. The PEG in the composite system can effectively regulate the thermal and mechanical properties of EpP, especially increasing the strain at break and reducing the Tg. Compared with EpP‐0 film. The Tg of EpP‐15 film increased by 40°C and the strain at break increased by 18.56%. Furthermore, compared with the EpP‐0 film, the recycling‐reprocessing temperature of EpP‐15 film has been reduced by 75°C. In summary, based on MD simulation, shape memory EpP films with controllable thermal response, recycling, and reprocessing functions have been successfully developed, and have shown considerable application prospects in the field of intelligent materials.

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Fabrication of Woven Jute Fiber Epoxy Bio-Composites through the Epoxy/Thiol-Ene Photopolymerization Technique

Cited by 5 publications

References 40 publications

Cation Bimetallic MOF Anchored Carbon Fiber for Highly Efficient Microwave Absorption

Cation Bimetallic MOF Anchored Carbon Fiber for Highly Efficient Microwave Absorption

Recent Developments in Synthesis, Properties, Applications and Recycling of Bio-Based Elastomers

Development of shape memory epoxy resin/polyethylene glycol film based on molecular dynamics simulation and performance investigation

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