Self-assembling of tetradecylammonium chain on swelling high charge micas (na-mica-3 and na-mica-2): Effect of alkylammonium concentration and mica layer charge

A family of tetradecylammonium micas is synthesized using synthetic swelling micas with high layer charge (NanSi8–nAlnMg6F4O20·XH2O, where n = 2 and 3) exchanged with tetradecylammonium cations. The molecular arrangement of the surfactant is elucidated on the basis of XRD patterns and DTA. The order...

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Detalles Bibliográficos
Autores: Pazos, M. Carolina, Cota, Agustín, Osuna, Francisco J., Pavón, Esperanza, Alba, María D.
Tipo de recurso: artículo
Fecha de publicación:2015
País:España
Institución:Consejo Superior de Investigaciones Científicas (CSIC)
Repositorio:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/117337
Acceso en línea:http://hdl.handle.net/10261/117337
Access Level:acceso abierto
Palabra clave:Alkylammonium
Hydrophobicity
Cation exchange capacity
Swelling high-charged micas
Organomica
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spelling Self-assembling of tetradecylammonium chain on swelling high charge micas (na-mica-3 and na-mica-2): Effect of alkylammonium concentration and mica layer chargePazos, M. CarolinaCota, AgustínOsuna, Francisco J.Pavón, EsperanzaAlba, María D.AlkylammoniumHydrophobicityCation exchange capacitySwelling high-charged micasOrganomicaA family of tetradecylammonium micas is synthesized using synthetic swelling micas with high layer charge (NanSi8–nAlnMg6F4O20·XH2O, where n = 2 and 3) exchanged with tetradecylammonium cations. The molecular arrangement of the surfactant is elucidated on the basis of XRD patterns and DTA. The ordering conformation of the surfactant molecules into the interlayer space of micas is investigated by IR/FT, 13C, 27Al, and 29Si MAS NMR. The structural arrangement of the tetradecylammonium cation in the interlayer space of high-charge micas is more sensitive to the effect of the mica layer charge at high concentration. The surfactant arrangement is found to follow the bilayer-paraffin model for all values of layer charge and surfactant concentration. However, at initial concentration below the mica CEC, a lateral monolayer is also observed. The amount of ordered conformation all-trans is directly proportional to the layer charge and surfactant concentration.Peer ReviewedAmerican Chemical Society2015201520152015info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501http://hdl.handle.net/10261/117337reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)Inglésinfo:eu-repo/semantics/openAccessoai:digital.csic.es:10261/1173372026-05-22T06:33:51Z
dc.title.none.fl_str_mv Self-assembling of tetradecylammonium chain on swelling high charge micas (na-mica-3 and na-mica-2): Effect of alkylammonium concentration and mica layer charge
title Self-assembling of tetradecylammonium chain on swelling high charge micas (na-mica-3 and na-mica-2): Effect of alkylammonium concentration and mica layer charge
spellingShingle Self-assembling of tetradecylammonium chain on swelling high charge micas (na-mica-3 and na-mica-2): Effect of alkylammonium concentration and mica layer charge
Pazos, M. Carolina
Alkylammonium
Hydrophobicity
Cation exchange capacity
Swelling high-charged micas
Organomica
title_short Self-assembling of tetradecylammonium chain on swelling high charge micas (na-mica-3 and na-mica-2): Effect of alkylammonium concentration and mica layer charge
title_full Self-assembling of tetradecylammonium chain on swelling high charge micas (na-mica-3 and na-mica-2): Effect of alkylammonium concentration and mica layer charge
title_fullStr Self-assembling of tetradecylammonium chain on swelling high charge micas (na-mica-3 and na-mica-2): Effect of alkylammonium concentration and mica layer charge
title_full_unstemmed Self-assembling of tetradecylammonium chain on swelling high charge micas (na-mica-3 and na-mica-2): Effect of alkylammonium concentration and mica layer charge
title_sort Self-assembling of tetradecylammonium chain on swelling high charge micas (na-mica-3 and na-mica-2): Effect of alkylammonium concentration and mica layer charge
dc.creator.none.fl_str_mv Pazos, M. Carolina
Cota, Agustín
Osuna, Francisco J.
Pavón, Esperanza
Alba, María D.
author Pazos, M. Carolina
author_facet Pazos, M. Carolina
Cota, Agustín
Osuna, Francisco J.
Pavón, Esperanza
Alba, María D.
author_role author
author2 Cota, Agustín
Osuna, Francisco J.
Pavón, Esperanza
Alba, María D.
author2_role author
author
author
author
dc.subject.none.fl_str_mv Alkylammonium
Hydrophobicity
Cation exchange capacity
Swelling high-charged micas
Organomica
topic Alkylammonium
Hydrophobicity
Cation exchange capacity
Swelling high-charged micas
Organomica
description A family of tetradecylammonium micas is synthesized using synthetic swelling micas with high layer charge (NanSi8–nAlnMg6F4O20·XH2O, where n = 2 and 3) exchanged with tetradecylammonium cations. The molecular arrangement of the surfactant is elucidated on the basis of XRD patterns and DTA. The ordering conformation of the surfactant molecules into the interlayer space of micas is investigated by IR/FT, 13C, 27Al, and 29Si MAS NMR. The structural arrangement of the tetradecylammonium cation in the interlayer space of high-charge micas is more sensitive to the effect of the mica layer charge at high concentration. The surfactant arrangement is found to follow the bilayer-paraffin model for all values of layer charge and surfactant concentration. However, at initial concentration below the mica CEC, a lateral monolayer is also observed. The amount of ordered conformation all-trans is directly proportional to the layer charge and surfactant concentration.
publishDate 2015
dc.date.none.fl_str_mv 2015
2015
2015
2015
dc.type.none.fl_str_mv info:eu-repo/semantics/article
http://purl.org/coar/resource_type/c_6501
format article
dc.identifier.none.fl_str_mv http://hdl.handle.net/10261/117337
url http://hdl.handle.net/10261/117337
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.publisher.none.fl_str_mv American Chemical Society
publisher.none.fl_str_mv American Chemical Society
dc.source.none.fl_str_mv reponame:DIGITAL.CSIC. Repositorio Institucional del CSIC
instname:Consejo Superior de Investigaciones Científicas (CSIC)
instname_str Consejo Superior de Investigaciones Científicas (CSIC)
reponame_str DIGITAL.CSIC. Repositorio Institucional del CSIC
collection DIGITAL.CSIC. Repositorio Institucional del CSIC
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15,811543

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