Enhancing the Sustainability of High-Performance Fiber Composites

Kuncho, Christopher N.; Liu, Wenhao; Möller, Johannes; Kammleiter, Julia; Stehle, Julia; Kokil, Akshay; Reynaud, Emmanuelle; Schmidt, Daniel F.

doi:10.1021/bk-2018-1310.ch018

Cited by 5 publications

(3 citation statements)

References 48 publications

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“…There are several works where structural composites with vitrimer matrix were developed [ 138 , 139 ]. Schmidt and Reynaud and colleagues [ 140 , 141 , 142 ] achieved reworkability of their bio-based epoxy/glass fiber composites through the introduction of transesterification catalysts.…”

Section: Preventing Composite Wastes-1: Recyclable Polymersmentioning

confidence: 99%

“…Epoxidized linseed oil (ELO) was shown to be a promising substitution of the petroleum-based resin in the blades, thanks to similar hardness and improved toughness [ 179 ]. Schmidt and Reynaud and colleagues [ 140 , 141 , 142 ] developed high-performance bio-based epoxy/glass fiber composites, based on anhydride-cured epoxidized linseed oil formulation for maximum mechanical performance and vacuum-assisted resin transfer molding technology. Moller [ 138 ] manufactured glass fiber reinforced composites with ELO based matrix cured with various anhydride curatives and catalysts, and managed to prevent the void formation.…”

Section: Preventing Composite Wastes-2: Bio-based Compositesmentioning

confidence: 99%

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Sustainable End-of-Life Management of Wind Turbine Blades: Overview of Current and Coming Solutions

Mishnaevsky

2021

Materials

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Various scenarios of end-of-life management of wind turbine blades are reviewed. “Reactive” strategies, designed to deal with already available, ageing turbines, installed in the 2000s, are discussed, among them, maintenance and repair, reuse, refurbishment and recycling. The main results and challenges of “pro-active strategies”, designed to ensure recyclability of new generations of wind turbines, are discussed. Among the main directions, the wind turbine blades with thermoplastic and recyclable thermoset composite matrices, as well as wood, bamboo and natural fiber-based composites were reviewed. It is argued that repair and reuse of wind turbine blades, and extension of the blade life has currently a number of advantages over other approaches. While new recyclable materials have been tested in laboratories, or in some cases on small or medium blades, there are remaining technological challenges for their utilization in large wind turbine blades.

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Section: Preventing Composite Wastes-1: Recyclable Polymersmentioning

confidence: 99%

Section: Preventing Composite Wastes-2: Bio-based Compositesmentioning

confidence: 99%

Sustainable End-of-Life Management of Wind Turbine Blades: Overview of Current and Coming Solutions

Mishnaevsky

2021

Materials

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“…Shifts in the glass transition temperature have been observed in some cases as well, in addition to the im-provements in repairability, shape memory and flexural strength [44]. Another advantage of using vitrimers as a matrix for composites is that valuable reinforcing phases (e.g., carbon fibers) can be recovered following the recycling of the materials [19,47,48].…”

Section: Introductionmentioning

confidence: 99%

Molecular Simulation of Covalent Adaptable Networks and Vitrimers: A Review

Karatrantos,

Couture,

Hesse

et al. 2024

Polymers

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Covalent adaptable networks and vitrimers are novel polymers with dynamic reversible bond exchange reactions for crosslinks, enabling them to modulate their properties between those of thermoplastics and thermosets. They have been gathering interest as materials for their recycling and self-healing properties. In this review, we discuss different molecular simulation efforts that have been used over the last decade to investigate and understand the nanoscale and molecular behaviors of covalent adaptable networks and vitrimers. In particular, molecular dynamics, Monte Carlo, and a hybrid of molecular dynamics and Monte Carlo approaches have been used to model the dynamic bond exchange reaction, which is the main mechanism of interest since it controls both the mechanical and rheological behaviors. The molecular simulation techniques presented yield sufficient results to investigate the structure and dynamics as well as the mechanical and rheological responses of such dynamic networks. The benefits of each method have been highlighted. The use of other tools such as theoretical models and machine learning has been included. We noticed, amongst the most prominent results, that stress relaxes as the bond exchange reaction happens, and that at temperatures higher than the glass transition temperature, the self-healing properties are better since more bond BERs are observed. The lifetime of dynamic covalent crosslinks follows, at moderate to high temperatures, an Arrhenius-like temperature dependence. We note the modeling of certain properties like the melt viscosity with glass transition temperature and the topology freezing transition temperature according to a behavior ruled by either the Williams–Landel–Ferry equation or the Arrhenius equation. Discrepancies between the behavior in dissociative and associative covalent adaptable networks are discussed. We conclude by stating which material parameters and atomistic factors, at the nanoscale, have not yet been taken into account and are lacking in the current literature.

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Recycling of wind turbine blades: Recent developments

Leon¹

2023

Current Opinion in Green and Sustainable Chemistry

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Enhancing the Sustainability of High-Performance Fiber Composites

Cited by 5 publications

References 48 publications

Sustainable End-of-Life Management of Wind Turbine Blades: Overview of Current and Coming Solutions

Sustainable End-of-Life Management of Wind Turbine Blades: Overview of Current and Coming Solutions

Molecular Simulation of Covalent Adaptable Networks and Vitrimers: A Review

Recycling of wind turbine blades: Recent developments

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