Rapid estimation of gamma number of viscose by UV Spectrophotometry

Autores
Lanieri, Diana Beatriz; Olmos, Graciela Viviana; Alberini, Ivana Cecilia; Maximino, Mirta Graciela
Año de publicación
2014
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Viscose process is the most important method for industrial cellulose dissolution. The degree of substitution (DS) is an important parameter in cellulose derivatives, and it is usually expressed as a gamma number (γ No.). In this work, viscose was prepared from eucalyptus and cotton linter dissolving pulps. Two methods were used for by-product separation: coagulation method (CM, reference) and ion exchange method (IEM). Similar γ Nos. were obtained with both methods for viscoses from cotton linters. The molar absorptivity of cellulose xanthate at 303 nm (e303nm) was determined by, firstly, measuring the absorbance of different purified viscoses and, subsequently, drawing a linear regression with the values obtained. The purification efficacy of IEM was analyzed from the UV peaks obtained in the range of 220-380 nm of the original and purified viscoses. The disappearance of the absorption of the main byproduct, sodium trithiocarbonate, was observed. Finally, with the e303nm mentioned above and the absorbance measurement of the purified viscoses, their γ Nos. were determined using a spectrophotometric method (SM). This would indicate that UV spectrophotometry could be used to estimate this parameter in a quick and easy way, which is decisive for the use of viscose in regenerated cellulose products.
Fil: Lanieri, Diana Beatriz. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe; Argentina
Fil: Olmos, Graciela Viviana. Universidad Nacional del Litoral. Facultad de Ingeniería Química. Instituto de Tecnología Celulósica; Argentina
Fil: Alberini, Ivana Cecilia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe; Argentina. Universidad Nacional del Litoral. Facultad de Ingeniería Química. Instituto de Tecnología Celulósica; Argentina
Fil: Maximino, Mirta Graciela. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe; Argentina. Universidad Nacional del Litoral. Facultad de Ingeniería Química. Instituto de Tecnología Celulósica; Argentina
Materia
COTTON LINTERS
EUCALYPTUS
GAMMA NUMBER
UV SPECTROPHOTOMETRY
VISCOSE
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/31575
Acceder
id CONICETDig_893fa7bc9f0e002f4d3c502f64203ff3
oai_identifier_str oai:ri.conicet.gov.ar:11336/31575
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Rapid estimation of gamma number of viscose by UV SpectrophotometryLanieri, Diana BeatrizOlmos, Graciela VivianaAlberini, Ivana CeciliaMaximino, Mirta GracielaCOTTON LINTERSEUCALYPTUSGAMMA NUMBERUV SPECTROPHOTOMETRYVISCOSEhttps://purl.org/becyt/ford/1.4https://purl.org/becyt/ford/1Viscose process is the most important method for industrial cellulose dissolution. The degree of substitution (DS) is an important parameter in cellulose derivatives, and it is usually expressed as a gamma number (γ No.). In this work, viscose was prepared from eucalyptus and cotton linter dissolving pulps. Two methods were used for by-product separation: coagulation method (CM, reference) and ion exchange method (IEM). Similar γ Nos. were obtained with both methods for viscoses from cotton linters. The molar absorptivity of cellulose xanthate at 303 nm (e303nm) was determined by, firstly, measuring the absorbance of different purified viscoses and, subsequently, drawing a linear regression with the values obtained. The purification efficacy of IEM was analyzed from the UV peaks obtained in the range of 220-380 nm of the original and purified viscoses. The disappearance of the absorption of the main byproduct, sodium trithiocarbonate, was observed. Finally, with the e303nm mentioned above and the absorbance measurement of the purified viscoses, their γ Nos. were determined using a spectrophotometric method (SM). This would indicate that UV spectrophotometry could be used to estimate this parameter in a quick and easy way, which is decisive for the use of viscose in regenerated cellulose products.Fil: Lanieri, Diana Beatriz. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe; ArgentinaFil: Olmos, Graciela Viviana. Universidad Nacional del Litoral. Facultad de Ingeniería Química. Instituto de Tecnología Celulósica; ArgentinaFil: Alberini, Ivana Cecilia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe; Argentina. Universidad Nacional del Litoral. Facultad de Ingeniería Química. Instituto de Tecnología Celulósica; ArgentinaFil: Maximino, Mirta Graciela. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe; Argentina. Universidad Nacional del Litoral. Facultad de Ingeniería Química. Instituto de Tecnología Celulósica; ArgentinaAssociação Brasileira Técnica de Celulose e Papel2014-02info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/31575Olmos, Graciela Viviana; Maximino, Mirta Graciela; Alberini, Ivana Cecilia; Lanieri, Diana Beatriz; Rapid estimation of gamma number of viscose by UV Spectrophotometry; Associação Brasileira Técnica de Celulose e Papel; O Papel; 75; 2; 2-2014; 60-650031-1057CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/http://www.revistaopapel.org.br/noticia-anexos/1392749849_b62d62176658599269d9c6c0fd5116ea_381870119.pdfinfo:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T09:54:00Zoai:ri.conicet.gov.ar:11336/31575instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-09-29 09:54:00.707CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Rapid estimation of gamma number of viscose by UV Spectrophotometry
title Rapid estimation of gamma number of viscose by UV Spectrophotometry
spellingShingle Rapid estimation of gamma number of viscose by UV Spectrophotometry
Lanieri, Diana Beatriz
COTTON LINTERS
EUCALYPTUS
GAMMA NUMBER
UV SPECTROPHOTOMETRY
VISCOSE
title_short Rapid estimation of gamma number of viscose by UV Spectrophotometry
title_full Rapid estimation of gamma number of viscose by UV Spectrophotometry
title_fullStr Rapid estimation of gamma number of viscose by UV Spectrophotometry
title_full_unstemmed Rapid estimation of gamma number of viscose by UV Spectrophotometry
title_sort Rapid estimation of gamma number of viscose by UV Spectrophotometry
dc.creator.none.fl_str_mv Lanieri, Diana Beatriz
Olmos, Graciela Viviana
Alberini, Ivana Cecilia
Maximino, Mirta Graciela
author Lanieri, Diana Beatriz
author_facet Lanieri, Diana Beatriz
Olmos, Graciela Viviana
Alberini, Ivana Cecilia
Maximino, Mirta Graciela
author_role author
author2 Olmos, Graciela Viviana
Alberini, Ivana Cecilia
Maximino, Mirta Graciela
author2_role author
author
author
dc.subject.none.fl_str_mv COTTON LINTERS
EUCALYPTUS
GAMMA NUMBER
UV SPECTROPHOTOMETRY
VISCOSE
topic COTTON LINTERS
EUCALYPTUS
GAMMA NUMBER
UV SPECTROPHOTOMETRY
VISCOSE
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.4
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv Viscose process is the most important method for industrial cellulose dissolution. The degree of substitution (DS) is an important parameter in cellulose derivatives, and it is usually expressed as a gamma number (γ No.). In this work, viscose was prepared from eucalyptus and cotton linter dissolving pulps. Two methods were used for by-product separation: coagulation method (CM, reference) and ion exchange method (IEM). Similar γ Nos. were obtained with both methods for viscoses from cotton linters. The molar absorptivity of cellulose xanthate at 303 nm (e303nm) was determined by, firstly, measuring the absorbance of different purified viscoses and, subsequently, drawing a linear regression with the values obtained. The purification efficacy of IEM was analyzed from the UV peaks obtained in the range of 220-380 nm of the original and purified viscoses. The disappearance of the absorption of the main byproduct, sodium trithiocarbonate, was observed. Finally, with the e303nm mentioned above and the absorbance measurement of the purified viscoses, their γ Nos. were determined using a spectrophotometric method (SM). This would indicate that UV spectrophotometry could be used to estimate this parameter in a quick and easy way, which is decisive for the use of viscose in regenerated cellulose products.
Fil: Lanieri, Diana Beatriz. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe; Argentina
Fil: Olmos, Graciela Viviana. Universidad Nacional del Litoral. Facultad de Ingeniería Química. Instituto de Tecnología Celulósica; Argentina
Fil: Alberini, Ivana Cecilia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe; Argentina. Universidad Nacional del Litoral. Facultad de Ingeniería Química. Instituto de Tecnología Celulósica; Argentina
Fil: Maximino, Mirta Graciela. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe; Argentina. Universidad Nacional del Litoral. Facultad de Ingeniería Química. Instituto de Tecnología Celulósica; Argentina
description Viscose process is the most important method for industrial cellulose dissolution. The degree of substitution (DS) is an important parameter in cellulose derivatives, and it is usually expressed as a gamma number (γ No.). In this work, viscose was prepared from eucalyptus and cotton linter dissolving pulps. Two methods were used for by-product separation: coagulation method (CM, reference) and ion exchange method (IEM). Similar γ Nos. were obtained with both methods for viscoses from cotton linters. The molar absorptivity of cellulose xanthate at 303 nm (e303nm) was determined by, firstly, measuring the absorbance of different purified viscoses and, subsequently, drawing a linear regression with the values obtained. The purification efficacy of IEM was analyzed from the UV peaks obtained in the range of 220-380 nm of the original and purified viscoses. The disappearance of the absorption of the main byproduct, sodium trithiocarbonate, was observed. Finally, with the e303nm mentioned above and the absorbance measurement of the purified viscoses, their γ Nos. were determined using a spectrophotometric method (SM). This would indicate that UV spectrophotometry could be used to estimate this parameter in a quick and easy way, which is decisive for the use of viscose in regenerated cellulose products.
publishDate 2014
dc.date.none.fl_str_mv 2014-02
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
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://hdl.handle.net/11336/31575
Olmos, Graciela Viviana; Maximino, Mirta Graciela; Alberini, Ivana Cecilia; Lanieri, Diana Beatriz; Rapid estimation of gamma number of viscose by UV Spectrophotometry; Associação Brasileira Técnica de Celulose e Papel; O Papel; 75; 2; 2-2014; 60-65
0031-1057
CONICET Digital
CONICET
url http://hdl.handle.net/11336/31575
identifier_str_mv Olmos, Graciela Viviana; Maximino, Mirta Graciela; Alberini, Ivana Cecilia; Lanieri, Diana Beatriz; Rapid estimation of gamma number of viscose by UV Spectrophotometry; Associação Brasileira Técnica de Celulose e Papel; O Papel; 75; 2; 2-2014; 60-65
0031-1057
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/http://www.revistaopapel.org.br/noticia-anexos/1392749849_b62d62176658599269d9c6c0fd5116ea_381870119.pdf
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
application/pdf
application/pdf
dc.publisher.none.fl_str_mv Associação Brasileira Técnica de Celulose e Papel
publisher.none.fl_str_mv Associação Brasileira Técnica de Celulose e Papel
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
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score 13.069144

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