Recyclable vitrimer epoxy coatings for durable protection

Lijsebetten, Filip Van; Engelen, Stéphanie; Bauters, Erwin; Vooren, W. Van; Smulders, Maarten M. J.; Prez, Filip E. Du

doi:10.1016/j.eurpolymj.2022.111426

Cited by 20 publications

(20 citation statements)

References 45 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Many systems, however, exhibit a more complex rheological behaviour, especially when studied near the glass transition temperature (T g ), 36,37 or when observing structuration of different network architectures, [38][39][40][41][42] but also in seemingly homogeneous systems. [43][44][45][46][47][48][49] As a result, a growing number of studies show that a stretched single exponential function produces a much better t to experimental data, which can lead to small but signicant changes in the derived viscoelastic parameters. 48,50,51 Nonetheless, using empirical tting functions such as stretched exponentials does not provide insight into the rheological phenomena or contributing factors and also makes it quite difficult to compare the outcome of different studies.…”

Section: Introductionmentioning

confidence: 99%

Characterising different molecular landscapes in dynamic covalent networks

et al. 2022

Self Cite

View full text Add to dashboard Cite

show abstract

Section: Introductionmentioning

confidence: 99%

Characterising different molecular landscapes in dynamic covalent networks

et al. 2022

Self Cite

View full text Add to dashboard Cite

show abstract

“…arguably one of the most relevant structural adhesive classes, where (dynamic) properties can be introduced through a variety of curing agents, resins, modifiers, and fillers. [44][45][46][47][48][49][50][51][52] More specifically, polyamide hardeners for epoxy systems are a well-known functional type of amino polyamide curing agents and they are frequently used to add flexibility and toughness to traditional epoxy formulations without sacrificing thermal stability. [46,[53][54][55][56] Nonetheless, because of their inherent bond strength, amide bonds are generally thought to be irreversible due to their molecular design.…”

Section: Introductionmentioning

confidence: 99%

Epoxy Adhesives with Reversible Hardeners: Controllable Thermal Debonding in Bulk and at Interfaces

Van Lijsebetten,

Maiheu,

Winne

et al. 2023

Advanced Materials

Self Cite

View full text Add to dashboard Cite

On‐demand adhesive dismantling has the potential to improve multimaterial product recycling, but its implementation has been hampered by a critical trade‐off between strong bonding and easy debonding. As a result, the temperature range in which these temporary adhesives can be used is relatively limited. Here, a new class of dynamic epoxy resins is reported that significantly extends this upper temperature limit and still achieves fast debonding. Specifically, two types of dynamic polyamidoamine curing agents for epoxy hardening are developed, being polysuccinamides (PSA) and polyglutaramides (PGA). As the dynamic debonding/rebonding process of PSA and especially PGA linkages is more thermally demanding and at the same time more thermally robust than previously reported dynamic covalent systems, the resulting materials can be triggered at high temperatures, and at the same time remain bonded over a wide temperature range. The versatility of the PSA and PGA dynamic adhesive curing system is demonstrated in classical bulk adhesive formulations, as well as in dynamic covalent linking to a PSA‐ or PGA‐functionalized surface. As a result, an attractive drop‐in strategy is achieved for producing debondable and rebondable epoxy adhesives, with high complementarity to existing adhesive resin technologies and applicable in an industrially relevant temperature window.

show abstract

“…For example, introducing reversible and dynamic covalent linkages to the epoxy systems that readily cleave under mild conditions is a promising approach for creating a circular economy [12] . Such functional groups provide self‐healing, shape‐memory, thermal reprocessing, and chemical recycling opportunities [34–50] . A large variety of epoxy thermosets that were designed to be recycled have been documented in the literature, encompassing systems with ester, imine, acetal, hexahydrotriazine, and disulfide moieties.…”

Section: Introductionmentioning

confidence: 99%

“…[12] Such functional groups provide selfhealing, shape-memory, thermal reprocessing, and chemical recycling opportunities. [34][35][36][37][38][39][40][41][42][43][44][45][46][47][48][49][50] A large variety of epoxy thermosets that were designed to be recycled have been documented in the literature, encompassing systems with ester, imine, acetal, hexahydrotriazine, and disulfide moieties.…”

Section: Introductionmentioning

confidence: 99%

Epoxy Thermosets Designed for Chemical Recycling

Türel

Dağlar

Eisenreich

et al. 2023

Chemistry An Asian Journal

View full text Add to dashboard Cite

Epoxy thermosets constitute a significant portion of high-performance plastics, as they possess excellent thermal and mechanical properties that are applicable in a wide range of industries. Nevertheless, traditional epoxy networks show strict limitations regarding chemical recycling due to their covalently crosslinked structures. Although existing methods provide partial solutions for the recycling of epoxy networks, it is urgent to develop more effective, sustainable, and permanent strategies that will solve the problem at hand. For this purpose, developing smart monomers with functional groups that enable the synthesis and development of fully recyclable polymers is of great importance. This review highlights recent advancements in chemically recyclable epoxy systems and their potential to support a circular plastic economy. Moreover, we evaluate the practicality of polymer syntheses and recycling techniques, and assess the applicability of these networks in industry.

show abstract

Recyclable vitrimer epoxy coatings for durable protection

Cited by 20 publications

References 45 publications

Characterising different molecular landscapes in dynamic covalent networks

Characterising different molecular landscapes in dynamic covalent networks

Epoxy Adhesives with Reversible Hardeners: Controllable Thermal Debonding in Bulk and at Interfaces

Epoxy Thermosets Designed for Chemical Recycling

Contact Info

Product

Resources

About