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Hardener Isomerism and Content of Dynamic Disulfide Bond Effect on Chemical Recycling of Epoxy Networks

dc.contributor.authorMartinez-Diaz, David
dc.contributor.authorCortés, Alejandro
dc.contributor.authorJiménez-Suárez, Alberto
dc.contributor.authorG. Prolongo, Silvia
dc.identifier.citationDavid Martinez-Diaz, Alejandro Cortés, Alberto Jiménez-Suárez, and Silvia G. Prolongo ACS Applied Polymer Materials 2022 4 (7), 5068-5076 DOI: 10.1021/acsapm.2c00598es
dc.descriptionCopyright © 2022 The Authors. Published by American Chemical Society. This publication is licensed under CC-BY
dc.description.abstractNowadays, there is an important concern in the scientific community related to the end-of-life products derived from polymeric matrix composites. In this regard, covalent adaptable networks and, more specifically, the disulfide bond-based ones are a promising approach to develop composite parts able to be dissolved in a specific solvent, thus regaining the continuous fiber reinforcement. In this work, the effect of hardener isomerism, using 2-aminophenyl disulfide (2-AFD) and 4-aminophenyl disulfide (4-AFD), and amine/epoxy ratio (1.0–1.2) was studied to optimize the chemical recycling capabilities at different temperatures. Results confirmed the need for using hardener excesses for dissolving these vitrimers. Networks based on 2-AFD were dissolved in considerably lower times than the 4-AFD ones, which is interesting since the latter one is quite more used for this purpose and currently way more expensive. In this context, a composite laminate, reinforced with six layers of carbon fiber fabric, was manufactured as the
dc.rightsAtribución 4.0 Internacional*
dc.subjectOrganic polymerses
dc.titleHardener Isomerism and Content of Dynamic Disulfide Bond Effect on Chemical Recycling of Epoxy Networkses

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Atribución 4.0 InternacionalExcept where otherwise noted, this item's license is described as Atribución 4.0 Internacional