Nanocomposites of Microbial Polyglutamic Acid and Nanoclays Compatibilized by Organophosphonium Surfactants

Ionic coupling of bacterial poly(γ-glutamic acid) (PGGA) with alkyltrimethylphosphonium surfactants is reported to render comb-like PGGA complexes with a biphasic-layered structure displaying periodicity at the nanoscopic scale. In this work, nanocomposites made of PGGA and montmorillonite, and cove...

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Autores: Gamarra, Ana, Muñoz Guerra, Sebastián, Urpí, Lourdes, Galbis Fuster, Elsa, Galbis Pérez, Juan Antonio
Tipo de recurso: artículo
Estado:Versión aceptada para publicación
Fecha de publicación:2018
País:España
Institución:Universidad de Sevilla (US)
Repositorio:idUS. Depósito de Investigación de la Universidad de Sevilla
OAI Identifier:oai:idus.us.es:11441/144284
Acceso en línea:https://hdl.handle.net/11441/144284
https://doi.org/10.1002/macp.201800083
Access Level:acceso abierto
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spelling Nanocomposites of Microbial Polyglutamic Acid and Nanoclays Compatibilized by Organophosphonium SurfactantsGamarra, AnaMuñoz Guerra, SebastiánUrpí, LourdesGalbis Fuster, ElsaGalbis Pérez, Juan AntonioIonic coupling of bacterial poly(γ-glutamic acid) (PGGA) with alkyltrimethylphosphonium surfactants is reported to render comb-like PGGA complexes with a biphasic-layered structure displaying periodicity at the nanoscopic scale. In this work, nanocomposites made of PGGA and montmorillonite, and covering a wide variety of compositions, are prepared by using either dodecyl- or eicosyl-trimethylphosphonium surfactant as a third component with a double purpose, that is, ionic complexation of PGGA and organo-modification of the nanoclay. Thermogravimetric analysis ascertains the compositions of these three-component nanocomposites and evidences their excellent thermal stability. The nanocomposite structure with PGGA and clay more or less intercalated according to composition and thermal history is evidenced by both X-ray diffraction and transmission electron microscopy. Simultaneous thermal SAXS/WAXS analysis at real time reveals extensive intermixing of the two phases that become notably enhanced by heating treatment. Thermal transition characteristics of the surfactant–PGGA complex are not significantly altered in the nanocomposites, but elastic moduli and strength to yield are found to increase proportionally to the content of clay.Ministerio de Ciencia, Innovación y Universidades de España (MICINN)-MAT2016-77345-C3-1-PAgencia de Gestión de Ayudas Universitarias y de Investigación de Barcelona-AGAUR 2009SGR1469WileyQuímica Orgánica y FarmacéuticaMinisterio de Ciencia, Innovación y Universidades (MICINN). EspañaAgencia de Gestión de Ayudas Universitarias y de Investigación (AGAUR). Barcelona. EspañaUniversidad de Sevilla2018info:eu-repo/semantics/articleinfo:eu-repo/semantics/acceptedVersionapplication/mswordapplication/vnd.openxmlformats-officedocument.wordprocessingml.documenthttps://hdl.handle.net/11441/144284https://doi.org/10.1002/macp.201800083reponame:idUS. Depósito de Investigación de la Universidad de Sevillainstname:Universidad de Sevilla (US)InglésMacromolecular Chemistry and Physics, 219 (12), 1800083.MAT2016-77345-C3-1-PAGAUR 2009SGR1469https://doi.org/10.1002/macp.201800083info:eu-repo/semantics/openAccessoai:idus.us.es:11441/1442842026-06-17T12:51:07Z
dc.title.none.fl_str_mv Nanocomposites of Microbial Polyglutamic Acid and Nanoclays Compatibilized by Organophosphonium Surfactants
title Nanocomposites of Microbial Polyglutamic Acid and Nanoclays Compatibilized by Organophosphonium Surfactants
spellingShingle Nanocomposites of Microbial Polyglutamic Acid and Nanoclays Compatibilized by Organophosphonium Surfactants
Gamarra, Ana
title_short Nanocomposites of Microbial Polyglutamic Acid and Nanoclays Compatibilized by Organophosphonium Surfactants
title_full Nanocomposites of Microbial Polyglutamic Acid and Nanoclays Compatibilized by Organophosphonium Surfactants
title_fullStr Nanocomposites of Microbial Polyglutamic Acid and Nanoclays Compatibilized by Organophosphonium Surfactants
title_full_unstemmed Nanocomposites of Microbial Polyglutamic Acid and Nanoclays Compatibilized by Organophosphonium Surfactants
title_sort Nanocomposites of Microbial Polyglutamic Acid and Nanoclays Compatibilized by Organophosphonium Surfactants
dc.creator.none.fl_str_mv Gamarra, Ana
Muñoz Guerra, Sebastián
Urpí, Lourdes
Galbis Fuster, Elsa
Galbis Pérez, Juan Antonio
author Gamarra, Ana
author_facet Gamarra, Ana
Muñoz Guerra, Sebastián
Urpí, Lourdes
Galbis Fuster, Elsa
Galbis Pérez, Juan Antonio
author_role author
author2 Muñoz Guerra, Sebastián
Urpí, Lourdes
Galbis Fuster, Elsa
Galbis Pérez, Juan Antonio
author2_role author
author
author
author
dc.contributor.none.fl_str_mv Química Orgánica y Farmacéutica
Ministerio de Ciencia, Innovación y Universidades (MICINN). España
Agencia de Gestión de Ayudas Universitarias y de Investigación (AGAUR). Barcelona. España
Universidad de Sevilla
description Ionic coupling of bacterial poly(γ-glutamic acid) (PGGA) with alkyltrimethylphosphonium surfactants is reported to render comb-like PGGA complexes with a biphasic-layered structure displaying periodicity at the nanoscopic scale. In this work, nanocomposites made of PGGA and montmorillonite, and covering a wide variety of compositions, are prepared by using either dodecyl- or eicosyl-trimethylphosphonium surfactant as a third component with a double purpose, that is, ionic complexation of PGGA and organo-modification of the nanoclay. Thermogravimetric analysis ascertains the compositions of these three-component nanocomposites and evidences their excellent thermal stability. The nanocomposite structure with PGGA and clay more or less intercalated according to composition and thermal history is evidenced by both X-ray diffraction and transmission electron microscopy. Simultaneous thermal SAXS/WAXS analysis at real time reveals extensive intermixing of the two phases that become notably enhanced by heating treatment. Thermal transition characteristics of the surfactant–PGGA complex are not significantly altered in the nanocomposites, but elastic moduli and strength to yield are found to increase proportionally to the content of clay.
publishDate 2018
dc.date.none.fl_str_mv 2018
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/acceptedVersion
format article
status_str acceptedVersion
dc.identifier.none.fl_str_mv https://hdl.handle.net/11441/144284
https://doi.org/10.1002/macp.201800083
url https://hdl.handle.net/11441/144284
https://doi.org/10.1002/macp.201800083
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv Macromolecular Chemistry and Physics, 219 (12), 1800083.
MAT2016-77345-C3-1-P
AGAUR 2009SGR1469
https://doi.org/10.1002/macp.201800083
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/msword
application/vnd.openxmlformats-officedocument.wordprocessingml.document
dc.publisher.none.fl_str_mv Wiley
publisher.none.fl_str_mv Wiley
dc.source.none.fl_str_mv reponame:idUS. Depósito de Investigación de la Universidad de Sevilla
instname:Universidad de Sevilla (US)
instname_str Universidad de Sevilla (US)
reponame_str idUS. Depósito de Investigación de la Universidad de Sevilla
collection idUS. Depósito de Investigación de la Universidad de Sevilla
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