Monitoring molecular dynamics of bacterial cellulose composites reinforced with graphene oxide by carboxymethyl cellulose addition

[EN] Broadband Dielectric Relaxation Spectroscopy was performed to study the molecular dynamics of dried Bacterial Cellulose/Carboxymethyl Cellulose-Graphene Oxide (BC/CMC-GO) composites as a function of the concentration of CMC in the culture media. At low temperature the dielectric spectra are dom...

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Autores: Sanchis Sánchez, María Jesús|||0000-0002-3528-3966, Carsí Rosique, Marta|||0000-0003-2315-3344, Gomez, C. M., Culebras, M., Gonzales, K.N., Gisbert Torres, Fernando
Formato: artículo
Fecha de publicación:2017
País:España
Recursos:Universitat Politècnica de València (UPV)
Repositorio:RiuNet. Repositorio Institucional de la Universitat Politécnica de Valéncia
Idioma:inglés
OAI Identifier:oai:riunet.upv.es:10251/101803
Acesso em linha:https://riunet.upv.es/handle/10251/101803
Access Level:acceso abierto
Palavra-chave:Bacterial cellulose composites
Dielectric relaxation spectroscopy
Thermal stability
TERMODINAMICA APLICADA (UPV)
MAQUINAS Y MOTORES TERMICOS
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network_name_str España
repository_id_str
spelling Monitoring molecular dynamics of bacterial cellulose composites reinforced with graphene oxide by carboxymethyl cellulose additionSanchis Sánchez, María Jesús|||0000-0002-3528-3966Carsí Rosique, Marta|||0000-0003-2315-3344Gomez, C. M.Culebras, M.Gonzales, K.N.Gisbert Torres, FernandoBacterial cellulose compositesDielectric relaxation spectroscopyThermal stabilityTERMODINAMICA APLICADA (UPV)MAQUINAS Y MOTORES TERMICOS[EN] Broadband Dielectric Relaxation Spectroscopy was performed to study the molecular dynamics of dried Bacterial Cellulose/Carboxymethyl Cellulose-Graphene Oxide (BC/CMC-GO) composites as a function of the concentration of CMC in the culture media. At low temperature the dielectric spectra are dominated by a dipolar process labelled as a beta -relaxation, whereas electrode polarization and the contribution of dc-conductivity dominate the spectra at high temperatures and low frequency. The CMC concentration affects the morphological structure of cellulose and subsequently alters its physical properties. X-ray diffractometry measurements show that increasing the concentration of CMC promotes a decrease of the Ia/Ib ratio. This structural change in BC, that involves a variation in inter- and intramolecular interactions (hydrogen-bonding interactions), affects steeply their molecular dynamics. So, an increase of CMC concentration produces a significantly decrease of the -relaxation strength and an increase of the dc-conductivity.This work was supported by the DGCYT [MAT2015-63955-R]; the Vice-Rectorate for Research of the Pontificia Universidad Catolica del Peril and the National Council of Science, Technology and Technological Innovation of Peru (CONCYTEC/FONDECYT).ElsevierInstituto de Tecnología EléctricaDepartamento de Termodinámica AplicadaInstituto Universitario de Automática e Informática IndustrialEscuela Técnica Superior de Ingeniería IndustrialMinisterio de Economía y CompetitividadRepositorio Institucional de la Universitat Politècnica de València Riunet20172017-01-01journal articlehttp://purl.org/coar/resource_type/c_6501VoRhttp://purl.org/coar/version/c_970fb48d4fbd8a85info:eu-repo/semantics/articleapplication/pdfapplication/pdfhttps://riunet.upv.es/handle/10251/101803reponame:RiuNet. Repositorio Institucional de la Universitat Politécnica de Valénciainstname:Universitat Politècnica de València (UPV)InglésengMinisterio de Economía y Competitividad http://dx.doi.org/10.13039/501100003329 MAT2015-63955-R NANOESTRUCTURAS SEMICONDUCTORAS Y NANOCOMPOSITES PARA LA RECUPERACION ENERGETICAopen accesshttp://purl.org/coar/access_right/c_abf2Reserva de todos los derechoshttp://rightsstatements.org/vocab/InC/1.0/info:eu-repo/semantics/openAccessoai:riunet.upv.es:10251/1018032026-06-13T07:49:27Z
dc.title.none.fl_str_mv Monitoring molecular dynamics of bacterial cellulose composites reinforced with graphene oxide by carboxymethyl cellulose addition
title Monitoring molecular dynamics of bacterial cellulose composites reinforced with graphene oxide by carboxymethyl cellulose addition
spellingShingle Monitoring molecular dynamics of bacterial cellulose composites reinforced with graphene oxide by carboxymethyl cellulose addition
Sanchis Sánchez, María Jesús|||0000-0002-3528-3966
Bacterial cellulose composites
Dielectric relaxation spectroscopy
Thermal stability
TERMODINAMICA APLICADA (UPV)
MAQUINAS Y MOTORES TERMICOS
title_short Monitoring molecular dynamics of bacterial cellulose composites reinforced with graphene oxide by carboxymethyl cellulose addition
title_full Monitoring molecular dynamics of bacterial cellulose composites reinforced with graphene oxide by carboxymethyl cellulose addition
title_fullStr Monitoring molecular dynamics of bacterial cellulose composites reinforced with graphene oxide by carboxymethyl cellulose addition
title_full_unstemmed Monitoring molecular dynamics of bacterial cellulose composites reinforced with graphene oxide by carboxymethyl cellulose addition
title_sort Monitoring molecular dynamics of bacterial cellulose composites reinforced with graphene oxide by carboxymethyl cellulose addition
dc.creator.none.fl_str_mv Sanchis Sánchez, María Jesús|||0000-0002-3528-3966
Carsí Rosique, Marta|||0000-0003-2315-3344
Gomez, C. M.
Culebras, M.
Gonzales, K.N.
Gisbert Torres, Fernando
author Sanchis Sánchez, María Jesús|||0000-0002-3528-3966
author_facet Sanchis Sánchez, María Jesús|||0000-0002-3528-3966
Carsí Rosique, Marta|||0000-0003-2315-3344
Gomez, C. M.
Culebras, M.
Gonzales, K.N.
Gisbert Torres, Fernando
author_role author
author2 Carsí Rosique, Marta|||0000-0003-2315-3344
Gomez, C. M.
Culebras, M.
Gonzales, K.N.
Gisbert Torres, Fernando
author2_role author
author
author
author
author
dc.contributor.none.fl_str_mv Instituto de Tecnología Eléctrica
Departamento de Termodinámica Aplicada
Instituto Universitario de Automática e Informática Industrial
Escuela Técnica Superior de Ingeniería Industrial
Ministerio de Economía y Competitividad
Repositorio Institucional de la Universitat Politècnica de València Riunet
dc.subject.none.fl_str_mv Bacterial cellulose composites
Dielectric relaxation spectroscopy
Thermal stability
TERMODINAMICA APLICADA (UPV)
MAQUINAS Y MOTORES TERMICOS
topic Bacterial cellulose composites
Dielectric relaxation spectroscopy
Thermal stability
TERMODINAMICA APLICADA (UPV)
MAQUINAS Y MOTORES TERMICOS
description [EN] Broadband Dielectric Relaxation Spectroscopy was performed to study the molecular dynamics of dried Bacterial Cellulose/Carboxymethyl Cellulose-Graphene Oxide (BC/CMC-GO) composites as a function of the concentration of CMC in the culture media. At low temperature the dielectric spectra are dominated by a dipolar process labelled as a beta -relaxation, whereas electrode polarization and the contribution of dc-conductivity dominate the spectra at high temperatures and low frequency. The CMC concentration affects the morphological structure of cellulose and subsequently alters its physical properties. X-ray diffractometry measurements show that increasing the concentration of CMC promotes a decrease of the Ia/Ib ratio. This structural change in BC, that involves a variation in inter- and intramolecular interactions (hydrogen-bonding interactions), affects steeply their molecular dynamics. So, an increase of CMC concentration produces a significantly decrease of the -relaxation strength and an increase of the dc-conductivity.
publishDate 2017
dc.date.none.fl_str_mv 2017
2017-01-01
dc.type.none.fl_str_mv journal article
http://purl.org/coar/resource_type/c_6501
VoR
http://purl.org/coar/version/c_970fb48d4fbd8a85
dc.type.openaire.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.none.fl_str_mv https://riunet.upv.es/handle/10251/101803
url https://riunet.upv.es/handle/10251/101803
dc.language.none.fl_str_mv Inglés
eng
language_invalid_str_mv Inglés
language eng
dc.relation.none.fl_str_mv Ministerio de Economía y Competitividad http://dx.doi.org/10.13039/501100003329 MAT2015-63955-R NANOESTRUCTURAS SEMICONDUCTORAS Y NANOCOMPOSITES PARA LA RECUPERACION ENERGETICA
dc.rights.none.fl_str_mv open access
http://purl.org/coar/access_right/c_abf2
Reserva de todos los derechos
http://rightsstatements.org/vocab/InC/1.0/
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
Reserva de todos los derechos
http://rightsstatements.org/vocab/InC/1.0/
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
application/pdf
dc.publisher.none.fl_str_mv Elsevier
publisher.none.fl_str_mv Elsevier
dc.source.none.fl_str_mv reponame:RiuNet. Repositorio Institucional de la Universitat Politécnica de Valéncia
instname:Universitat Politècnica de València (UPV)
instname_str Universitat Politècnica de València (UPV)
reponame_str RiuNet. Repositorio Institucional de la Universitat Politécnica de Valéncia
collection RiuNet. Repositorio Institucional de la Universitat Politécnica de Valéncia
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15.301603

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