Structural Insight into Chitosan Supports Functionalized with Nanoparticles

Autores
Lamarra, Javier Andrés; Damonte, Laura Cristina; Rivero, Sandra; Pinotti, Adriana
Año de publicación
2018
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
The incorporation of suspensions of nanoparticles functionalized with gallic acid (GA) was used as a strategy to obtain nanocomposite active films with different both, chitosan: tripolyphosphate (CH:TPP) and nanoparticles:chitosan (N:CH) ratios. The thermal analysis carried out by modulated differential scanning calorimetry (MDSC) allowed observing the shift of an endothermic event towards higher temperatures with a greater N:CH ratio. Analyzing ATR-FTIR spectra through-principal component analysis (PCA) can be inferred that the incorporation of the nanoparticles produced a discrimination of the samples into clusters when the region 1400-1700 cm-1 was considered.The decrease in crystalline size with the inclusion of nanoparticles (NA and NB), proved the existence of interactions among CH, TPP, and GA, resulting in a more amorphous structure. The positron annihilation lifetime spectroscopy (PALS) technique was adequate to correlate the glass transition temperatures (Tg) obtained by using the MDSC technique with parameters τ2 and I2 ascribed to the annihilation of positrons in the interface.The cross-section of nanocomposites obtained by scanning electron microscopy (SEM) clearly showed a homogeneous distribution of the nanoparticles without aggregation suggesting their compatibility with the CH matrix. By virtue of the obtained results, the nanocomposites with the greatest nanoparticle proportion and the highest TPP concentration attained significant modifications in relation to CH matrices, because of the crosslinking of the biopolymer with GA and TPP.
Centro de Investigación y Desarrollo en Criotecnología de Alimentos
Instituto de Física La Plata
Materia
Química
Nanoparticles
Chitosan 
Nivel de accesibilidad
acceso abierto
Condiciones de uso
http://creativecommons.org/licenses/by-nc-sa/4.0/
Repositorio
SEDICI (UNLP)
Institución
Universidad Nacional de La Plata
OAI Identificador
oai:sedici.unlp.edu.ar:10915/97498
Acceder
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network_name_str SEDICI (UNLP)
spelling Structural Insight into Chitosan Supports Functionalized with NanoparticlesLamarra, Javier AndrésDamonte, Laura CristinaRivero, SandraPinotti, AdrianaQuímicaNanoparticlesChitosan The incorporation of suspensions of nanoparticles functionalized with gallic acid (GA) was used as a strategy to obtain nanocomposite active films with different both, chitosan: tripolyphosphate (CH:TPP) and nanoparticles:chitosan (N:CH) ratios. The thermal analysis carried out by modulated differential scanning calorimetry (MDSC) allowed observing the shift of an endothermic event towards higher temperatures with a greater N:CH ratio. Analyzing ATR-FTIR spectra through-principal component analysis (PCA) can be inferred that the incorporation of the nanoparticles produced a discrimination of the samples into clusters when the region 1400-1700 cm-1 was considered.The decrease in crystalline size with the inclusion of nanoparticles (NA and NB), proved the existence of interactions among CH, TPP, and GA, resulting in a more amorphous structure. The positron annihilation lifetime spectroscopy (PALS) technique was adequate to correlate the glass transition temperatures (Tg) obtained by using the MDSC technique with parameters τ2 and I2 ascribed to the annihilation of positrons in the interface.The cross-section of nanocomposites obtained by scanning electron microscopy (SEM) clearly showed a homogeneous distribution of the nanoparticles without aggregation suggesting their compatibility with the CH matrix. By virtue of the obtained results, the nanocomposites with the greatest nanoparticle proportion and the highest TPP concentration attained significant modifications in relation to CH matrices, because of the crosslinking of the biopolymer with GA and TPP.Centro de Investigación y Desarrollo en Criotecnología de AlimentosInstituto de Física La Plata2018-02info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionArticulohttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfhttp://sedici.unlp.edu.ar/handle/10915/97498enginfo:eu-repo/semantics/altIdentifier/url/https://ri.conicet.gov.ar/11336/86923info:eu-repo/semantics/altIdentifier/url/https://www.hindawi.com/journals/amse/2018/3965783/info:eu-repo/semantics/altIdentifier/issn/1687-8434info:eu-repo/semantics/altIdentifier/doi/10.1155/5928info:eu-repo/semantics/altIdentifier/hdl/11336/86923info:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by-nc-sa/4.0/Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)reponame:SEDICI (UNLP)instname:Universidad Nacional de La Platainstacron:UNLP2025-09-03T10:52:46Zoai:sedici.unlp.edu.ar:10915/97498Institucionalhttp://sedici.unlp.edu.ar/Universidad públicaNo correspondehttp://sedici.unlp.edu.ar/oai/snrdalira@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:13292025-09-03 10:52:46.45SEDICI (UNLP) - Universidad Nacional de La Platafalse
dc.title.none.fl_str_mv Structural Insight into Chitosan Supports Functionalized with Nanoparticles
title Structural Insight into Chitosan Supports Functionalized with Nanoparticles
spellingShingle Structural Insight into Chitosan Supports Functionalized with Nanoparticles
Lamarra, Javier Andrés
Química
Nanoparticles
Chitosan 
title_short Structural Insight into Chitosan Supports Functionalized with Nanoparticles
title_full Structural Insight into Chitosan Supports Functionalized with Nanoparticles
title_fullStr Structural Insight into Chitosan Supports Functionalized with Nanoparticles
title_full_unstemmed Structural Insight into Chitosan Supports Functionalized with Nanoparticles
title_sort Structural Insight into Chitosan Supports Functionalized with Nanoparticles
dc.creator.none.fl_str_mv Lamarra, Javier Andrés
Damonte, Laura Cristina
Rivero, Sandra
Pinotti, Adriana
author Lamarra, Javier Andrés
author_facet Lamarra, Javier Andrés
Damonte, Laura Cristina
Rivero, Sandra
Pinotti, Adriana
author_role author
author2 Damonte, Laura Cristina
Rivero, Sandra
Pinotti, Adriana
author2_role author
author
author
dc.subject.none.fl_str_mv Química
Nanoparticles
Chitosan 
topic Química
Nanoparticles
Chitosan 
dc.description.none.fl_txt_mv The incorporation of suspensions of nanoparticles functionalized with gallic acid (GA) was used as a strategy to obtain nanocomposite active films with different both, chitosan: tripolyphosphate (CH:TPP) and nanoparticles:chitosan (N:CH) ratios. The thermal analysis carried out by modulated differential scanning calorimetry (MDSC) allowed observing the shift of an endothermic event towards higher temperatures with a greater N:CH ratio. Analyzing ATR-FTIR spectra through-principal component analysis (PCA) can be inferred that the incorporation of the nanoparticles produced a discrimination of the samples into clusters when the region 1400-1700 cm-1 was considered.The decrease in crystalline size with the inclusion of nanoparticles (NA and NB), proved the existence of interactions among CH, TPP, and GA, resulting in a more amorphous structure. The positron annihilation lifetime spectroscopy (PALS) technique was adequate to correlate the glass transition temperatures (Tg) obtained by using the MDSC technique with parameters τ2 and I2 ascribed to the annihilation of positrons in the interface.The cross-section of nanocomposites obtained by scanning electron microscopy (SEM) clearly showed a homogeneous distribution of the nanoparticles without aggregation suggesting their compatibility with the CH matrix. By virtue of the obtained results, the nanocomposites with the greatest nanoparticle proportion and the highest TPP concentration attained significant modifications in relation to CH matrices, because of the crosslinking of the biopolymer with GA and TPP.
Centro de Investigación y Desarrollo en Criotecnología de Alimentos
Instituto de Física La Plata
description The incorporation of suspensions of nanoparticles functionalized with gallic acid (GA) was used as a strategy to obtain nanocomposite active films with different both, chitosan: tripolyphosphate (CH:TPP) and nanoparticles:chitosan (N:CH) ratios. The thermal analysis carried out by modulated differential scanning calorimetry (MDSC) allowed observing the shift of an endothermic event towards higher temperatures with a greater N:CH ratio. Analyzing ATR-FTIR spectra through-principal component analysis (PCA) can be inferred that the incorporation of the nanoparticles produced a discrimination of the samples into clusters when the region 1400-1700 cm-1 was considered.The decrease in crystalline size with the inclusion of nanoparticles (NA and NB), proved the existence of interactions among CH, TPP, and GA, resulting in a more amorphous structure. The positron annihilation lifetime spectroscopy (PALS) technique was adequate to correlate the glass transition temperatures (Tg) obtained by using the MDSC technique with parameters τ2 and I2 ascribed to the annihilation of positrons in the interface.The cross-section of nanocomposites obtained by scanning electron microscopy (SEM) clearly showed a homogeneous distribution of the nanoparticles without aggregation suggesting their compatibility with the CH matrix. By virtue of the obtained results, the nanocomposites with the greatest nanoparticle proportion and the highest TPP concentration attained significant modifications in relation to CH matrices, because of the crosslinking of the biopolymer with GA and TPP.
publishDate 2018
dc.date.none.fl_str_mv 2018-02
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
Articulo
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://sedici.unlp.edu.ar/handle/10915/97498
url http://sedici.unlp.edu.ar/handle/10915/97498
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/https://ri.conicet.gov.ar/11336/86923
info:eu-repo/semantics/altIdentifier/url/https://www.hindawi.com/journals/amse/2018/3965783/
info:eu-repo/semantics/altIdentifier/issn/1687-8434
info:eu-repo/semantics/altIdentifier/doi/10.1155/5928
info:eu-repo/semantics/altIdentifier/hdl/11336/86923
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
http://creativecommons.org/licenses/by-nc-sa/4.0/
Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)
eu_rights_str_mv openAccess
rights_invalid_str_mv http://creativecommons.org/licenses/by-nc-sa/4.0/
Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)
dc.format.none.fl_str_mv application/pdf
dc.source.none.fl_str_mv reponame:SEDICI (UNLP)
instname:Universidad Nacional de La Plata
instacron:UNLP
reponame_str SEDICI (UNLP)
collection SEDICI (UNLP)
instname_str Universidad Nacional de La Plata
instacron_str UNLP
institution UNLP
repository.name.fl_str_mv SEDICI (UNLP) - Universidad Nacional de La Plata
repository.mail.fl_str_mv alira@sedici.unlp.edu.ar
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