Actuator behaviour of tailored poly(Thiourethane) shape memory thermosets

n this work, a new family of poly(thiourethane) shape memory thermosetting actuators was developed and characterized. These materials can be easily prepared from mixtures of two different aliphatic diisocyanates and a trithiol in the presence of a latent catalyst, allowing an easy manipulation of th...

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Autores: Gamardella, Francesco, Serra Albet, Maria Àngels|||0000-0003-1387-0358, Ramis Juan, Xavier|||0000-0003-2550-7185, Flor López, Sílvia de la|||0000-0002-6851-1371
Tipo de recurso: artículo
Fecha de publicación:2021
País:España
Institución:Universitat Politècnica de Catalunya (UPC)
Repositorio:UPCommons. Portal del coneixement obert de la UPC
Idioma:inglés
OAI Identifier:oai:upcommons.upc.edu:2117/362061
Acceso en línea:https://hdl.handle.net/2117/362061
https://dx.doi.org/10.3390/polym13101571
Access Level:acceso abierto
Palabra clave:Polymers
Thermodynamics
Poly(thiourethane)
Shape-memory
Thermosets
Latency
Actuator
Single cantilever
Polímers
Termodinàmica
Àrees temàtiques de la UPC::Física::Termodinàmica
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oai_identifier_str oai:upcommons.upc.edu:2117/362061
network_acronym_str ES
network_name_str España
repository_id_str
spelling Actuator behaviour of tailored poly(Thiourethane) shape memory thermosetsGamardella, FrancescoSerra Albet, Maria Àngels|||0000-0003-1387-0358Ramis Juan, Xavier|||0000-0003-2550-7185Flor López, Sílvia de la|||0000-0002-6851-1371PolymersThermodynamicsPoly(thiourethane)Shape-memoryThermosetsLatencyActuatorSingle cantileverPolímersTermodinàmicaÀrees temàtiques de la UPC::Física::Termodinàmican this work, a new family of poly(thiourethane) shape memory thermosetting actuators was developed and characterized. These materials can be easily prepared from mixtures of two different aliphatic diisocyanates and a trithiol in the presence of a latent catalyst, allowing an easy manipulation of the formulation. Rheological studies of the curing process confirm the latent character of the formulations. The glass transition temperatures and the mechanical properties can be modified by varying the proportion of diisocyanates (hexamethylene diisocyanate, HDI, and isophorone diisocyanate, IPDI) with stoichiometric amounts of trimethylolpropane tris(3-mercaptopropionate). The shape-memory behavior was deeply investigated under three different conditions: unconstrained, partially constrained, and fully constrained. Tests were performed in single cantilever bending mode to simulate conditions closer to real complex mechanics of thermomechanical actuators under flexural performances. The complex recovery process in single cantilever bending mode was compared with that obtained using tensile mode. The results evidenced that the amount of recovery force in fully constrained conditions, or energy released during the recovery process in partially constrained, can be modulated by simply changing the proportion of both diisocyanates. A simple model based on Timoshenko beam theory was used for the prediction of the amount of work performed. The reported results are an important guideline to design shape-memory materials based on poly(thiourethane) networks, establishing criteria for the choice of the material depending on the expected applicationPeer ReviewedMultidisciplinary Digital Publishing Institute (MDPI)20212021-05-0120222022-02-09journal articlehttp://purl.org/coar/resource_type/c_6501AMhttp://purl.org/coar/version/c_ab4af688f83e57aainfo:eu-repo/semantics/articleapplication/pdfhttps://hdl.handle.net/2117/362061https://dx.doi.org/10.3390/polym13101571reponame:UPCommons. Portal del coneixement obert de la UPCinstname:Universitat Politècnica de Catalunya (UPC)Inglésengopen accesshttp://purl.org/coar/access_right/c_abf2Attribution 4.0 International (CC BY 4.0)https://creativecommons.org/licenses/by/4.0/info:eu-repo/semantics/openAccessoai:upcommons.upc.edu:2117/3620612026-05-27T15:37:01Z
dc.title.none.fl_str_mv Actuator behaviour of tailored poly(Thiourethane) shape memory thermosets
title Actuator behaviour of tailored poly(Thiourethane) shape memory thermosets
spellingShingle Actuator behaviour of tailored poly(Thiourethane) shape memory thermosets
Gamardella, Francesco
Polymers
Thermodynamics
Poly(thiourethane)
Shape-memory
Thermosets
Latency
Actuator
Single cantilever
Polímers
Termodinàmica
Àrees temàtiques de la UPC::Física::Termodinàmica
title_short Actuator behaviour of tailored poly(Thiourethane) shape memory thermosets
title_full Actuator behaviour of tailored poly(Thiourethane) shape memory thermosets
title_fullStr Actuator behaviour of tailored poly(Thiourethane) shape memory thermosets
title_full_unstemmed Actuator behaviour of tailored poly(Thiourethane) shape memory thermosets
title_sort Actuator behaviour of tailored poly(Thiourethane) shape memory thermosets
dc.creator.none.fl_str_mv Gamardella, Francesco
Serra Albet, Maria Àngels|||0000-0003-1387-0358
Ramis Juan, Xavier|||0000-0003-2550-7185
Flor López, Sílvia de la|||0000-0002-6851-1371
author Gamardella, Francesco
author_facet Gamardella, Francesco
Serra Albet, Maria Àngels|||0000-0003-1387-0358
Ramis Juan, Xavier|||0000-0003-2550-7185
Flor López, Sílvia de la|||0000-0002-6851-1371
author_role author
author2 Serra Albet, Maria Àngels|||0000-0003-1387-0358
Ramis Juan, Xavier|||0000-0003-2550-7185
Flor López, Sílvia de la|||0000-0002-6851-1371
author2_role author
author
author
dc.subject.none.fl_str_mv Polymers
Thermodynamics
Poly(thiourethane)
Shape-memory
Thermosets
Latency
Actuator
Single cantilever
Polímers
Termodinàmica
Àrees temàtiques de la UPC::Física::Termodinàmica
topic Polymers
Thermodynamics
Poly(thiourethane)
Shape-memory
Thermosets
Latency
Actuator
Single cantilever
Polímers
Termodinàmica
Àrees temàtiques de la UPC::Física::Termodinàmica
description n this work, a new family of poly(thiourethane) shape memory thermosetting actuators was developed and characterized. These materials can be easily prepared from mixtures of two different aliphatic diisocyanates and a trithiol in the presence of a latent catalyst, allowing an easy manipulation of the formulation. Rheological studies of the curing process confirm the latent character of the formulations. The glass transition temperatures and the mechanical properties can be modified by varying the proportion of diisocyanates (hexamethylene diisocyanate, HDI, and isophorone diisocyanate, IPDI) with stoichiometric amounts of trimethylolpropane tris(3-mercaptopropionate). The shape-memory behavior was deeply investigated under three different conditions: unconstrained, partially constrained, and fully constrained. Tests were performed in single cantilever bending mode to simulate conditions closer to real complex mechanics of thermomechanical actuators under flexural performances. The complex recovery process in single cantilever bending mode was compared with that obtained using tensile mode. The results evidenced that the amount of recovery force in fully constrained conditions, or energy released during the recovery process in partially constrained, can be modulated by simply changing the proportion of both diisocyanates. A simple model based on Timoshenko beam theory was used for the prediction of the amount of work performed. The reported results are an important guideline to design shape-memory materials based on poly(thiourethane) networks, establishing criteria for the choice of the material depending on the expected application
publishDate 2021
dc.date.none.fl_str_mv 2021
2021-05-01
2022
2022-02-09
dc.type.none.fl_str_mv journal article
http://purl.org/coar/resource_type/c_6501
AM
http://purl.org/coar/version/c_ab4af688f83e57aa
dc.type.openaire.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.none.fl_str_mv https://hdl.handle.net/2117/362061
https://dx.doi.org/10.3390/polym13101571
url https://hdl.handle.net/2117/362061
https://dx.doi.org/10.3390/polym13101571
dc.language.none.fl_str_mv Inglés
eng
language_invalid_str_mv Inglés
language eng
dc.rights.none.fl_str_mv open access
http://purl.org/coar/access_right/c_abf2
Attribution 4.0 International (CC BY 4.0)
https://creativecommons.org/licenses/by/4.0/
dc.rights.openaire.fl_str_mv info:eu-repo/semantics/openAccess
rights_invalid_str_mv open access
http://purl.org/coar/access_right/c_abf2
Attribution 4.0 International (CC BY 4.0)
https://creativecommons.org/licenses/by/4.0/
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Multidisciplinary Digital Publishing Institute (MDPI)
publisher.none.fl_str_mv Multidisciplinary Digital Publishing Institute (MDPI)
dc.source.none.fl_str_mv reponame:UPCommons. Portal del coneixement obert de la UPC
instname:Universitat Politècnica de Catalunya (UPC)
instname_str Universitat Politècnica de Catalunya (UPC)
reponame_str UPCommons. Portal del coneixement obert de la UPC
collection UPCommons. Portal del coneixement obert de la UPC
repository.name.fl_str_mv
repository.mail.fl_str_mv
_version_ 1869422879940018176
score 15,301603

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