Flexible and structural coloured composite films from cellulose nanocrystals/hydroxypropyl cellulose lyotropic suspensions

Detalhes bibliográficos
Autor(a) principal: Saraiva, Diogo V.
Data de Publicação: 2020
Outros Autores: Chagas, Ricardo, de Abreu, Beatriz M., Gouveia, Cláudia N., Silva, Pedro E. S., Godinho, Maria Helena, Fernandes, Susete N.
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
Texto Completo: http://hdl.handle.net/10362/99542
Resumo: FEDER funds through the COMPETE 2020 Program, National Funds through FCT -Portuguese Foundation for Science and Technology and POR Lisboa2020, PTDC/CTM-BIO/6178/2014, M-ERA-NET2/0007/2016 (CellColor) and PTDC/CTM-REF/30529/2017 (NanoCell2SEC).
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spelling Flexible and structural coloured composite films from cellulose nanocrystals/hydroxypropyl cellulose lyotropic suspensionsCellulose nanocrystalsChiral nematicHydroxypropyl celluloseLiquid crystalLyotropicChemical Engineering(all)Materials Science(all)Condensed Matter PhysicsInorganic ChemistryFEDER funds through the COMPETE 2020 Program, National Funds through FCT -Portuguese Foundation for Science and Technology and POR Lisboa2020, PTDC/CTM-BIO/6178/2014, M-ERA-NET2/0007/2016 (CellColor) and PTDC/CTM-REF/30529/2017 (NanoCell2SEC).Lyotropic colloidal aqueous suspensions of cellulose nanocrystals (CNCs) can, after solvent evaporation, retain their chiral nematic arrangement. As water is removed the pitch value of the suspension decreases and structural colour-generating films, which are mechanically brittle in nature, can be obtained. Increasing their flexibility while keeping the chiral nematic structure and biocompatible nature is a challenging task. However, if achievable, this will promote their use in new and interesting applications. In this study, we report on the addition of different amounts of hydroxypropyl cellulose (HPC) to CNCs suspension within the coexistence of the isotropic-anisotropic phases and infer the influence of this cellulosic derivative on the properties of the obtained solid films. It was possible to add 50 wt.% of HPC to a CNCs aqueous suspension (to obtain a 50/50 solids ratio) without disrupting the LC phase of CNCs and maintaining a left-handed helical structure in the obtained films. When 30 wt.% of HPC was added to the suspension of CNCs, a strong colouration in the film was still observed. This colour shifts to the near-infrared region as the HPC content in the colloidal suspension increases to 40 wt.% or 50 wt.% The all-cellulosic composite films present an increase in the maximum strain as the concentration of HPC increases, as shown by the bending experiments and an improvement in their thermal properties.DCM - Departamento de Ciência dos MateriaisCENIMAT-i3N - Centro de Investigação de Materiais (Lab. Associado I3N)RUNSaraiva, Diogo V.Chagas, Ricardode Abreu, Beatriz M.Gouveia, Cláudia N.Silva, Pedro E. S.Godinho, Maria HelenaFernandes, Susete N.2020-06-17T22:48:18Z2020-022020-02-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10362/99542engPURE: 18624183https://doi.org/10.3390/cryst10020122info: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:RCAAP2024-03-11T04:46:26Zoai:run.unl.pt:10362/99542Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-20T03:39:12.495914Repositório 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 Flexible and structural coloured composite films from cellulose nanocrystals/hydroxypropyl cellulose lyotropic suspensions
title Flexible and structural coloured composite films from cellulose nanocrystals/hydroxypropyl cellulose lyotropic suspensions
spellingShingle Flexible and structural coloured composite films from cellulose nanocrystals/hydroxypropyl cellulose lyotropic suspensions
Saraiva, Diogo V.
Cellulose nanocrystals
Chiral nematic
Hydroxypropyl cellulose
Liquid crystal
Lyotropic
Chemical Engineering(all)
Materials Science(all)
Condensed Matter Physics
Inorganic Chemistry
title_short Flexible and structural coloured composite films from cellulose nanocrystals/hydroxypropyl cellulose lyotropic suspensions
title_full Flexible and structural coloured composite films from cellulose nanocrystals/hydroxypropyl cellulose lyotropic suspensions
title_fullStr Flexible and structural coloured composite films from cellulose nanocrystals/hydroxypropyl cellulose lyotropic suspensions
title_full_unstemmed Flexible and structural coloured composite films from cellulose nanocrystals/hydroxypropyl cellulose lyotropic suspensions
title_sort Flexible and structural coloured composite films from cellulose nanocrystals/hydroxypropyl cellulose lyotropic suspensions
author Saraiva, Diogo V.
author_facet Saraiva, Diogo V.
Chagas, Ricardo
de Abreu, Beatriz M.
Gouveia, Cláudia N.
Silva, Pedro E. S.
Godinho, Maria Helena
Fernandes, Susete N.
author_role author
author2 Chagas, Ricardo
de Abreu, Beatriz M.
Gouveia, Cláudia N.
Silva, Pedro E. S.
Godinho, Maria Helena
Fernandes, Susete N.
author2_role author
author
author
author
author
author
dc.contributor.none.fl_str_mv DCM - Departamento de Ciência dos Materiais
CENIMAT-i3N - Centro de Investigação de Materiais (Lab. Associado I3N)
RUN
dc.contributor.author.fl_str_mv Saraiva, Diogo V.
Chagas, Ricardo
de Abreu, Beatriz M.
Gouveia, Cláudia N.
Silva, Pedro E. S.
Godinho, Maria Helena
Fernandes, Susete N.
dc.subject.por.fl_str_mv Cellulose nanocrystals
Chiral nematic
Hydroxypropyl cellulose
Liquid crystal
Lyotropic
Chemical Engineering(all)
Materials Science(all)
Condensed Matter Physics
Inorganic Chemistry
topic Cellulose nanocrystals
Chiral nematic
Hydroxypropyl cellulose
Liquid crystal
Lyotropic
Chemical Engineering(all)
Materials Science(all)
Condensed Matter Physics
Inorganic Chemistry
description FEDER funds through the COMPETE 2020 Program, National Funds through FCT -Portuguese Foundation for Science and Technology and POR Lisboa2020, PTDC/CTM-BIO/6178/2014, M-ERA-NET2/0007/2016 (CellColor) and PTDC/CTM-REF/30529/2017 (NanoCell2SEC).
publishDate 2020
dc.date.none.fl_str_mv 2020-06-17T22:48:18Z
2020-02
2020-02-01T00:00:00Z
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/10362/99542
url http://hdl.handle.net/10362/99542
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv PURE: 18624183
https://doi.org/10.3390/cryst10020122
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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