Effect of deacetylation degree and molecular weight on surface properties of chitosan obtained from biowastes

A surface characterization of two types of unmodified chitosan properties with different molecular weight (MW) and deacetylation degree (DD) was carried out in terms of polymer concentration (a concentration lower than the saturation, the saturation concentration and a supersaturated concentration)....

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Detalles Bibliográficos
Autores: Carrera Sánchez, Cecilio, Bengoechea Ruiz, Carlos, Carrillo de la Fuente, Francisco, Calero Romero, Nuria
Tipo de recurso: artículo
Estado:Versión aceptada para publicación
Fecha de publicación:2023
País:España
Institución:Universidad de Sevilla (US)
Repositorio:idUS. Depósito de Investigación de la Universidad de Sevilla
OAI Identifier:oai:idus.us.es:11441/178900
Acceso en línea:https://hdl.handle.net/11441/178900
https://doi.org/10.1016/j.foodhyd.2022.108383
Access Level:acceso abierto
Palabra clave:Chitosan
Deacetylation degree
Crayfish
Surface rheology
Surface tension
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spelling Effect of deacetylation degree and molecular weight on surface properties of chitosan obtained from biowastesCarrera Sánchez, CecilioBengoechea Ruiz, CarlosCarrillo de la Fuente, FranciscoCalero Romero, NuriaChitosanDeacetylation degreeCrayfishSurface rheologySurface tensionA surface characterization of two types of unmodified chitosan properties with different molecular weight (MW) and deacetylation degree (DD) was carried out in terms of polymer concentration (a concentration lower than the saturation, the saturation concentration and a supersaturated concentration). The modification of the production conditions allowed to obtain chitosan samples with different properties (MW and DD), which eventually determined its surface activity. Thus, a kind of tailor-made chitosan may be designed to be adapted to different applications. Surface activity has been analysed by mean of measurements of surface tension, dilatational and shear rheology. The results have demonstrated that chitosan possessed a good surface activity at high ionic strength. Also, the increase in the concentration of chitosan in the solution, and the increase in molecular weight (and, therefore, a decrease in the degree of deacetylation) favoured the formation of aggregates, which improved the adsorption kinetics. The latter allowed adequate elasticity values to be reached more quickly. These properties are reached faster for the higher molecular weight chitosan (lower degree of deacetylation), due to the more hydrophobic character that facilitates the interactions between the adsorbed aggregates. Surface rheology revealed a predominantly elastic behaviour of chitosan film. All of these results strengthen the idea that chitosan behaves as a surface-active hydrophilic Pickering agent.ElsevierIngeniería QuímicaAGR211: Ciencia y Tecnología de Sistemas DispersosTEP229: Tecnología y Diseño de Productos MulticomponentesTEP133: Racionalización Energ. en Procesos de Transf. de MateriaTEP943: Reología Aplicada. Tecnología de ColoidesJunta de AndalucíaUniversidad de Sevilla2023info:eu-repo/semantics/articleinfo:eu-repo/semantics/acceptedVersionapplication/pdfapplication/pdfhttps://hdl.handle.net/11441/178900https://doi.org/10.1016/j.foodhyd.2022.108383reponame:idUS. Depósito de Investigación de la Universidad de Sevillainstname:Universidad de Sevilla (US)InglésP20_01046US-1380760https://www.sciencedirect.com/science/article/abs/pii/S0268005X22009031info:eu-repo/semantics/openAccessoai:idus.us.es:11441/1789002026-06-17T12:51:07Z
dc.title.none.fl_str_mv Effect of deacetylation degree and molecular weight on surface properties of chitosan obtained from biowastes
title Effect of deacetylation degree and molecular weight on surface properties of chitosan obtained from biowastes
spellingShingle Effect of deacetylation degree and molecular weight on surface properties of chitosan obtained from biowastes
Carrera Sánchez, Cecilio
Chitosan
Deacetylation degree
Crayfish
Surface rheology
Surface tension
title_short Effect of deacetylation degree and molecular weight on surface properties of chitosan obtained from biowastes
title_full Effect of deacetylation degree and molecular weight on surface properties of chitosan obtained from biowastes
title_fullStr Effect of deacetylation degree and molecular weight on surface properties of chitosan obtained from biowastes
title_full_unstemmed Effect of deacetylation degree and molecular weight on surface properties of chitosan obtained from biowastes
title_sort Effect of deacetylation degree and molecular weight on surface properties of chitosan obtained from biowastes
dc.creator.none.fl_str_mv Carrera Sánchez, Cecilio
Bengoechea Ruiz, Carlos
Carrillo de la Fuente, Francisco
Calero Romero, Nuria
author Carrera Sánchez, Cecilio
author_facet Carrera Sánchez, Cecilio
Bengoechea Ruiz, Carlos
Carrillo de la Fuente, Francisco
Calero Romero, Nuria
author_role author
author2 Bengoechea Ruiz, Carlos
Carrillo de la Fuente, Francisco
Calero Romero, Nuria
author2_role author
author
author
dc.contributor.none.fl_str_mv Ingeniería Química
AGR211: Ciencia y Tecnología de Sistemas Dispersos
TEP229: Tecnología y Diseño de Productos Multicomponentes
TEP133: Racionalización Energ. en Procesos de Transf. de Materia
TEP943: Reología Aplicada. Tecnología de Coloides
Junta de Andalucía
Universidad de Sevilla
dc.subject.none.fl_str_mv Chitosan
Deacetylation degree
Crayfish
Surface rheology
Surface tension
topic Chitosan
Deacetylation degree
Crayfish
Surface rheology
Surface tension
description A surface characterization of two types of unmodified chitosan properties with different molecular weight (MW) and deacetylation degree (DD) was carried out in terms of polymer concentration (a concentration lower than the saturation, the saturation concentration and a supersaturated concentration). The modification of the production conditions allowed to obtain chitosan samples with different properties (MW and DD), which eventually determined its surface activity. Thus, a kind of tailor-made chitosan may be designed to be adapted to different applications. Surface activity has been analysed by mean of measurements of surface tension, dilatational and shear rheology. The results have demonstrated that chitosan possessed a good surface activity at high ionic strength. Also, the increase in the concentration of chitosan in the solution, and the increase in molecular weight (and, therefore, a decrease in the degree of deacetylation) favoured the formation of aggregates, which improved the adsorption kinetics. The latter allowed adequate elasticity values to be reached more quickly. These properties are reached faster for the higher molecular weight chitosan (lower degree of deacetylation), due to the more hydrophobic character that facilitates the interactions between the adsorbed aggregates. Surface rheology revealed a predominantly elastic behaviour of chitosan film. All of these results strengthen the idea that chitosan behaves as a surface-active hydrophilic Pickering agent.
publishDate 2023
dc.date.none.fl_str_mv 2023
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/11441/178900
https://doi.org/10.1016/j.foodhyd.2022.108383
url https://hdl.handle.net/11441/178900
https://doi.org/10.1016/j.foodhyd.2022.108383
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv P20_01046
US-1380760
https://www.sciencedirect.com/science/article/abs/pii/S0268005X22009031
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
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: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
repository.name.fl_str_mv
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