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dc.contributor.authorRusso, Claudio
dc.contributor.authorFernández Francos, Xavier
dc.contributor.authorFlor López, Sílvia de la
dc.contributor.otherUniversitat Politècnica de Catalunya. Departament de Màquines i Motors Tèrmics
dc.date.accessioned2020-11-24T13:07:43Z
dc.date.available2020-11-24T13:07:43Z
dc.date.issued2020-01-01
dc.identifier.citationRusso, C.; Fernandez-Francos, X.; De la Flor, S. Shape-memory actuators based on dual-curing thiol-acrylate-epoxy thermosets. "Express polymer letters", 1 Gener 2020, vol. 15, núm. 1, p. 58-71.
dc.identifier.issn1788-618X
dc.identifier.urihttp://hdl.handle.net/2117/333030
dc.description.abstractIn this work, new shape-memory thermosets have been developed using a thiol-acrylate-epoxy dual-curing system. A previously studied system has been successfully modified, introducing different amounts of tri(2,3-epoxypropyl)isocyanurate (ISO) and bisphenol A glycerolate (1 glycerol/phenol) diacrylate (BAGA) in order to enhance the thermomechanical properties and the glass transition temperature of the final materials. Preliminary studies on the curing process proved that the curing process is not affected, and the critical ratio remains unchanged. Glass transition temperatures and thermomechanical properties were successfully improved, extending the applicability of these thermosets to the field of soft-actuator. Shape-memory behavior was comprehensively investigated in unconstrained, fully and partially constrained conditions. Unconstrained experiment results showed excellent shape fixation and recovery, coupled with a fast recovery process. On the other hand, fully and partially constrained recovery experiments evidenced optimal performances obtained by the combination of both high crosslinking density and high deformability in the programming stage. Considerably high values of recovery stress (up to 7 MPa) and work output (up to 1300 kJ/m3) were found confirming the high potentiality of these dual-cured thermosets in the field of soft-actuation.In this work, new shape-memory thermosets have been developed using a thiol-acrylate-epoxy dual-curing system. A previously studied system has been successfully modified, introducing different amounts of tri(2,3-epoxypropyl)isocyanurate (ISO) and bisphenol A glycerolate (1 glycerol/phenol) diacrylate (BAGA) in order to enhance the thermomechanical properties and the glass transition temperature of the final materials. Preliminary studies on the curing process proved that the curing process is not affected, and the critical ratio remains unchanged. Glass transition temperatures and thermomechanical properties were successfully improved, extending the applicability of these thermosets to the field of soft-actuator. Shape-memory behavior was comprehensively investigated in unconstrained, fully and partially constrained conditions. Unconstrained experiment results showed excellent shape fixation and recovery, coupled with a fast recovery process. On the other hand, fully and partially constrained recovery experiments evidenced optimal performances obtained by the combination of both high crosslinking density and high deformability in the programming stage. Considerably high values of recovery stress (up to 7 MPa) and work output (up to 1300 kJ/m3) were found confirming the high potentiality of these dual-cured thermosets in the field of soft-actuation.
dc.format.extent14 p.
dc.language.isoeng
dc.rightsAttribution-NonCommercial-NoDerivs 3.0 Spain
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/3.0/es/
dc.subjectÀrees temàtiques de la UPC::Enginyeria dels materials
dc.subjectÀrees temàtiques de la UPC::Enginyeria dels materials::Materials plàstics i polímers
dc.subjectÀrees temàtiques de la UPC::Enginyeria química
dc.subjectÀrees temàtiques de la UPC::Enginyeria química::Química orgànica
dc.subject.lcshHeat resistant plastics
dc.subject.lcshThermodynamics
dc.subject.otherThermosetting resins
dc.subject.otherDual-curing
dc.subject.otherActuator
dc.subject.otherShape-memory
dc.subject.otherRecovery stress
dc.titleShape-memory actuators based on dual-curing thiol-acrylate-epoxy thermosets
dc.typeArticle
dc.subject.lemacPlàstics termostables
dc.subject.lemacTermodinàmica
dc.contributor.groupUniversitat Politècnica de Catalunya. POLTEPO - Polímers Termoestables Epoxídics
dc.identifier.doi10.3144/expresspolymlett.2021.7
dc.relation.publisherversionhttp://www.expresspolymlett.com/
dc.rights.accessOpen Access
local.identifier.drac29833229
dc.description.versionPostprint (published version)
local.citation.authorRusso, C.; Fernandez-Francos, X.; de la Flor, S.
local.citation.publicationNameExpress polymer letters
local.citation.volume15
local.citation.number1
local.citation.startingPage58
local.citation.endingPage71


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Attribution-NonCommercial-NoDerivs 3.0 Spain
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