{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,3]],"date-time":"2026-10-03T08:37:13Z","timestamp":1791016633866,"version":"4.1.0"},"reference-count":37,"publisher":"MDPI AG","issue":"21","license":[{"start":{"date-parts":[[2022,11,3]],"date-time":"2022-11-03T00:00:00Z","timestamp":1667433600000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"German Federal Ministry for Economic Affairs and Climate Action (BMWK)"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Polymers"],"abstract":"<jats:p>The precise characterization of new bio-based thermosets is imperative for the correct assessment of their potential as matrix material in fiber-reinforced polymer composites. Therefore, the mechanical properties of diglycidyl ether of bisphenol a (DGEBA) cured with l-arginine were investigated to determine whether the bio-based thermoset possesses the required mechanical properties for application as a matrix material. The cured thermoset is called Argopox. The mixture of amino acid and epoxy resin was prepared via three-roll milling and cured in the presence of an urea-based accelerator. The tensile, compression, flexural and toughness properties of Argopox were characterized at T=\u221240\u00a0\u2218C, 22 \u2218C and 80 \u2218C to determine the temperature-dependence of the thermoset\u2019s mechanical properties in its service temperature range. The glass transition temperature Tg was analyzed via dynamic mechanical analysis (DMA) and is approximately 119 \u2218C. The tensile, compression and flexural strength at 22 \u2218C are about 56 MPa, 98 MPa and 85 MPa, respectively. The critical stress intensity factor KIC and fracture energy GIC at 22 \u2218C are roughly 1.1\u00a0MPam0.5 and 510 Jm\u2212, respectively. Consequently, Argopox possesses mechanical properties that reach performance levels similar to that of materials which are already used as matrix for fiber reinforced composites.<\/jats:p>","DOI":"10.3390\/polym14214696","type":"journal-article","created":{"date-parts":[[2022,11,4]],"date-time":"2022-11-04T04:00:51Z","timestamp":1667534451000},"page":"4696","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":15,"title":["l-Arginine as Bio-Based Curing Agent for Epoxy Resins: Temperature-Dependence of Mechanical Properties"],"prefix":"10.3390","volume":"14","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-9948-3310","authenticated-orcid":false,"given":"Florian","family":"Rothenh\u00e4usler","sequence":"first","affiliation":[{"name":"Department of Polymer Engineering, University of Bayreuth, Universit\u00e4tsstra\u00dfe 30, 95447 Bayreuth, Germany"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-5985-2628","authenticated-orcid":false,"given":"Holger","family":"Ruckdaeschel","sequence":"additional","affiliation":[{"name":"Department of Polymer Engineering, University of Bayreuth, Universit\u00e4tsstra\u00dfe 30, 95447 Bayreuth, Germany"},{"name":"Neue Materialien Bayreuth GmbH, Gottlieb-Keim-Stra\u00dfe 60, 95448 Bayreuth, Germany"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2022,11,3]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","unstructured":"Sch\u00fcrmann, H. 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