Influence of chain length of prepolymers in permanent memory effect of PDLC assessed by solid-state NMR

Detalhes bibliográficos
Autor(a) principal: Mouquinho, Ana
Data de Publicação: 2019
Outros Autores: Corvo, Marta C., Almeida, Pedro L., Feio, Gabriel, Sotomayor, Joao
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
Texto Completo: http://hdl.handle.net/10400.21/10523
Resumo: The relationship between linear chain (ethylene oxide units) length of polymerisable monomers with morphology, electro-optical properties and C-13 nuclear magnetic resonance (NMR) spectroscopy of the corresponding polymer-dispersed liquid crystal (PDLC) films was investigated. The preferred liquid crystal molecule alignment and permanent memory effect of PDLC were greatly influenced by the length of the molecular chain of prepolymers to be incorporated as a polymer matrix. By increasing the number of ethylene oxide in prepolymer chain and maintaining the number of functionalities (polymerisable groups in each monomer molecule), the permanent memory effect of PDLC increased, as proved by solid-state C-13 NMR spectroscopy.
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spelling Influence of chain length of prepolymers in permanent memory effect of PDLC assessed by solid-state NMRPolymer & xfeffDispersed liquid crystalsMemory devicesPermanent memory effectLiquid crystalsThe relationship between linear chain (ethylene oxide units) length of polymerisable monomers with morphology, electro-optical properties and C-13 nuclear magnetic resonance (NMR) spectroscopy of the corresponding polymer-dispersed liquid crystal (PDLC) films was investigated. The preferred liquid crystal molecule alignment and permanent memory effect of PDLC were greatly influenced by the length of the molecular chain of prepolymers to be incorporated as a polymer matrix. By increasing the number of ethylene oxide in prepolymer chain and maintaining the number of functionalities (polymerisable groups in each monomer molecule), the permanent memory effect of PDLC increased, as proved by solid-state C-13 NMR spectroscopy.Taylor & FrancisRCIPLMouquinho, AnaCorvo, Marta C.Almeida, Pedro L.Feio, GabrielSotomayor, Joao2019-09-30T09:35:45Z2019-092019-09-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10400.21/10523engMOUQUINHO, Ana; [et al] – Influence of chain length of prepolymers in permanent memory effect of PDLC assessed by solid-state NMR. Liquid Crystals. ISSN 0267-8292. (2019), pp. 1-100267-829210.1080/02678292.2019.1662105metadata only accessinfo:eu-repo/semantics/openAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2023-08-03T10:00:39Zoai:repositorio.ipl.pt:10400.21/10523Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T20:18:55.760484Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãofalse
dc.title.none.fl_str_mv Influence of chain length of prepolymers in permanent memory effect of PDLC assessed by solid-state NMR
title Influence of chain length of prepolymers in permanent memory effect of PDLC assessed by solid-state NMR
spellingShingle Influence of chain length of prepolymers in permanent memory effect of PDLC assessed by solid-state NMR
Mouquinho, Ana
Polymer & xfeff
Dispersed liquid crystals
Memory devices
Permanent memory effect
Liquid crystals
title_short Influence of chain length of prepolymers in permanent memory effect of PDLC assessed by solid-state NMR
title_full Influence of chain length of prepolymers in permanent memory effect of PDLC assessed by solid-state NMR
title_fullStr Influence of chain length of prepolymers in permanent memory effect of PDLC assessed by solid-state NMR
title_full_unstemmed Influence of chain length of prepolymers in permanent memory effect of PDLC assessed by solid-state NMR
title_sort Influence of chain length of prepolymers in permanent memory effect of PDLC assessed by solid-state NMR
author Mouquinho, Ana
author_facet Mouquinho, Ana
Corvo, Marta C.
Almeida, Pedro L.
Feio, Gabriel
Sotomayor, Joao
author_role author
author2 Corvo, Marta C.
Almeida, Pedro L.
Feio, Gabriel
Sotomayor, Joao
author2_role author
author
author
author
dc.contributor.none.fl_str_mv RCIPL
dc.contributor.author.fl_str_mv Mouquinho, Ana
Corvo, Marta C.
Almeida, Pedro L.
Feio, Gabriel
Sotomayor, Joao
dc.subject.por.fl_str_mv Polymer & xfeff
Dispersed liquid crystals
Memory devices
Permanent memory effect
Liquid crystals
topic Polymer & xfeff
Dispersed liquid crystals
Memory devices
Permanent memory effect
Liquid crystals
description The relationship between linear chain (ethylene oxide units) length of polymerisable monomers with morphology, electro-optical properties and C-13 nuclear magnetic resonance (NMR) spectroscopy of the corresponding polymer-dispersed liquid crystal (PDLC) films was investigated. The preferred liquid crystal molecule alignment and permanent memory effect of PDLC were greatly influenced by the length of the molecular chain of prepolymers to be incorporated as a polymer matrix. By increasing the number of ethylene oxide in prepolymer chain and maintaining the number of functionalities (polymerisable groups in each monomer molecule), the permanent memory effect of PDLC increased, as proved by solid-state C-13 NMR spectroscopy.
publishDate 2019
dc.date.none.fl_str_mv 2019-09-30T09:35:45Z
2019-09
2019-09-01T00:00:00Z
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://hdl.handle.net/10400.21/10523
url http://hdl.handle.net/10400.21/10523
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv MOUQUINHO, Ana; [et al] – Influence of chain length of prepolymers in permanent memory effect of PDLC assessed by solid-state NMR. Liquid Crystals. ISSN 0267-8292. (2019), pp. 1-10
0267-8292
10.1080/02678292.2019.1662105
dc.rights.driver.fl_str_mv metadata only access
info:eu-repo/semantics/openAccess
rights_invalid_str_mv metadata only access
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Taylor & Francis
publisher.none.fl_str_mv Taylor & Francis
dc.source.none.fl_str_mv reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
instacron:RCAAP
instname_str Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
instacron_str RCAAP
institution RCAAP
reponame_str Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
collection Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
repository.name.fl_str_mv Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
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