Rodriguez, RaquelBekas, Dimitrios G.Flórez, SoniaKosarli, MariaPaipetis, Alkiviadis S.2020-01-20Rodriguez , R , Bekas , D G , Flórez , S , Kosarli , M & Paipetis , A S 2020 , ' Development of self-contained microcapsules for optimised catalyst position in self-healing materials ' , Polymer , vol. 187 , 122084 , pp. 122084 . https://doi.org/10.1016/j.polymer.2019.1220840032-3861researchoutputwizard: 11556/859Publisher Copyright: © 2019 Elsevier LtdSelf-contained microcapsules for use in self-healing epoxy resin are successfully synthesized by suspension polymerization process. The microencapsulation of an epoxy resin using Polymethylmethacrylate (PMMA) as a shell material and the location of scandium triflate (Sc(OTf)3) as the catalyst into microcapsules shell during the microencapsulation processes is presented (PMMA/Sc(OTf)3-walled microcapsules). Spherical microcapsules of 80 μm in diameter with a liquid core content of 30 wt% (determined by HPLC) are produced. Catalyst location on microcapsules are assessed qualitatively by SEM-EADS and quantitatively by TGA showing high yields (⁓70 wt%). The evaluation of the healing efficiency was assessed in terms of fracture toughness recovery. PMMA/Sc(OTf)3-walled microcapsules showed an increased healing efficiency than that of conventional PMMA-walled capsule. The healing efficiency of the PMMA-walled capsules was 46.7 and 55.1% when the system healed at 80 and 120 °C, respectively. However, in the case of PMMA/Sc(OTf)3-walled microcapsules healing efficiency increased to 57.5 and 79.1% for the same healing temperatures.11416299enginfo:eu-repo/semantics/restrictedAccessDevelopment of self-contained microcapsules for optimised catalyst position in self-healing materialsjournal article10.1016/j.polymer.2019.122084MicrocapsulesSelf-containedSelf-healingSuspension polymerizationMicrocapsulesSelf-containedSelf-healingSuspension polymerizationOrganic ChemistryPolymers and PlasticsMaterials ChemistryProject IDinfo:eu-repo/grantAgreement/EC/FP7/605412/EU/SELF-HEALING POLYMERS FOR CONCEPTS ON SELF-REPAIRED AERONAUTICAL COMPOSITES/HIPOCRATESinfo:eu-repo/grantAgreement/EC/FP7/605412/EU/SELF-HEALING POLYMERS FOR CONCEPTS ON SELF-REPAIRED AERONAUTICAL COMPOSITES/HIPOCRATESFunding InfoEuropean Commission, FP7, 605412, HIPOCRATESEuropean Commission, FP7, 605412, HIPOCRATEShttp://www.scopus.com/inward/record.url?scp=85076858539&partnerID=8YFLogxK