Understanding the influence of carbon nanotubes on the flow behavior of liquid crystalline hydroxypropylcellulose: A Rheo-NMR study

Detalhes bibliográficos
Autor(a) principal: Echeverria, Coro
Data de Publicação: 2019
Outros Autores: Almeida, Pedro L., Figueirinhas, João L., Godinho, Maria H.
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
Texto Completo: http://hdl.handle.net/10362/97195
Resumo: M-ERA-NET2/0007/2016 (CellColor). P.L.A. acknowledges financial support from Portuguese Foundation for Science and Technology through the project PTDC/FIS-NAN/0117/2014. J.L.F acknowledges financial support from Portuguese Foundation for Science and Technology through CeFEMA strategic project UID/CTM/04540/2019. Spanish Ministry of Science, Innovation, and Universities for IJCI-2015-26432 contract.
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spelling Understanding the influence of carbon nanotubes on the flow behavior of liquid crystalline hydroxypropylcellulose: A Rheo-NMR studyCarbon nanotubesCelluloseLC-HPCRheo-NMRRheologyOrganic ChemistryPolymers and PlasticsMaterials ChemistryM-ERA-NET2/0007/2016 (CellColor). P.L.A. acknowledges financial support from Portuguese Foundation for Science and Technology through the project PTDC/FIS-NAN/0117/2014. J.L.F acknowledges financial support from Portuguese Foundation for Science and Technology through CeFEMA strategic project UID/CTM/04540/2019. Spanish Ministry of Science, Innovation, and Universities for IJCI-2015-26432 contract.Hydroxypropylcellulose (HPC) is an important cellulose derivative that has been widely studied due to its water-solubility, biocompatibility and biodegradability, but even more significant due to its ability to form liquid crystalline phases. HPC is able to form, under certain conditions, chiral nematic (cholesteric) structures in water solutions. Previous work confirmed that films prepared from liquid crystalline HPC/water solutions (LC-HPC) gave rise to anisotropic networks, with similar mechanical and optical characteristics of Liquid Crystalline Elastomers (LCE), capable to respond to humidity. It was also demonstrated that the incorporation of carbon nanotubes (CNTs) significantly improved the actuator responsiveness. In the work presented herein, we investigate how the incorporation of carbon nanotubes affects the flow behavior of LC-HPC solutions, and thus the structure-properties relationship, through a detailed Rheo-NMR study. As observed from the results, when shearing the samples, the degree of order reached (maximum quadrupolar peak splitting) by LC-HPC solutions increases with CNT content. Regarding the subsequent relaxation process, only the incorporation of 0.01 wt% of CNTs (lowest content) contributes to a faster recovery of cholesteric structure.CENIMAT-i3N - Centro de Investigação de Materiais (Lab. Associado I3N)DCM - Departamento de Ciência dos MateriaisRUNEcheverria, CoroAlmeida, Pedro L.Figueirinhas, João L.Godinho, Maria H.2022-03-31T00:31:40Z2019-10-102019-10-10T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10362/97195eng0032-3861PURE: 16994370https://doi.org/10.1016/j.polymer.2019.121675info: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:RCAAP2024-03-11T04:44:24Zoai:run.unl.pt:10362/97195Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-20T03:38:41.660050Repositório 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 Understanding the influence of carbon nanotubes on the flow behavior of liquid crystalline hydroxypropylcellulose: A Rheo-NMR study
title Understanding the influence of carbon nanotubes on the flow behavior of liquid crystalline hydroxypropylcellulose: A Rheo-NMR study
spellingShingle Understanding the influence of carbon nanotubes on the flow behavior of liquid crystalline hydroxypropylcellulose: A Rheo-NMR study
Echeverria, Coro
Carbon nanotubes
Cellulose
LC-HPC
Rheo-NMR
Rheology
Organic Chemistry
Polymers and Plastics
Materials Chemistry
title_short Understanding the influence of carbon nanotubes on the flow behavior of liquid crystalline hydroxypropylcellulose: A Rheo-NMR study
title_full Understanding the influence of carbon nanotubes on the flow behavior of liquid crystalline hydroxypropylcellulose: A Rheo-NMR study
title_fullStr Understanding the influence of carbon nanotubes on the flow behavior of liquid crystalline hydroxypropylcellulose: A Rheo-NMR study
title_full_unstemmed Understanding the influence of carbon nanotubes on the flow behavior of liquid crystalline hydroxypropylcellulose: A Rheo-NMR study
title_sort Understanding the influence of carbon nanotubes on the flow behavior of liquid crystalline hydroxypropylcellulose: A Rheo-NMR study
author Echeverria, Coro
author_facet Echeverria, Coro
Almeida, Pedro L.
Figueirinhas, João L.
Godinho, Maria H.
author_role author
author2 Almeida, Pedro L.
Figueirinhas, João L.
Godinho, Maria H.
author2_role author
author
author
dc.contributor.none.fl_str_mv CENIMAT-i3N - Centro de Investigação de Materiais (Lab. Associado I3N)
DCM - Departamento de Ciência dos Materiais
RUN
dc.contributor.author.fl_str_mv Echeverria, Coro
Almeida, Pedro L.
Figueirinhas, João L.
Godinho, Maria H.
dc.subject.por.fl_str_mv Carbon nanotubes
Cellulose
LC-HPC
Rheo-NMR
Rheology
Organic Chemistry
Polymers and Plastics
Materials Chemistry
topic Carbon nanotubes
Cellulose
LC-HPC
Rheo-NMR
Rheology
Organic Chemistry
Polymers and Plastics
Materials Chemistry
description M-ERA-NET2/0007/2016 (CellColor). P.L.A. acknowledges financial support from Portuguese Foundation for Science and Technology through the project PTDC/FIS-NAN/0117/2014. J.L.F acknowledges financial support from Portuguese Foundation for Science and Technology through CeFEMA strategic project UID/CTM/04540/2019. Spanish Ministry of Science, Innovation, and Universities for IJCI-2015-26432 contract.
publishDate 2019
dc.date.none.fl_str_mv 2019-10-10
2019-10-10T00:00:00Z
2022-03-31T00:31:40Z
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/10362/97195
url http://hdl.handle.net/10362/97195
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 0032-3861
PURE: 16994370
https://doi.org/10.1016/j.polymer.2019.121675
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
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
repository.mail.fl_str_mv
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