Mostrar el registro sencillo del ítem
dc.contributor.author
Vallejos, María Evangelina
dc.contributor.author
Felissia, Fernando Esteban
dc.contributor.author
Curvelo, Antonio Aprigio da Silva
dc.contributor.author
Zambon, Marcia D.
dc.contributor.author
Ramos, Luis Enrique
dc.contributor.author
Area, Maria Cristina
dc.date.available
2018-04-23T22:42:17Z
dc.date.issued
2011-05
dc.identifier.citation
Vallejos, María Evangelina; Felissia, Fernando Esteban; Curvelo, Antonio Aprigio da Silva; Zambon, Marcia D.; Ramos, Luis Enrique; et al.; Chemical and physico-chemical characterization of lignins obtained from the ethanol-water fractionation of bagasse; North Carolina State University. Department of Wood and Paper Science; Bioresources; 6; 2; 5-2011; 1158-1171
dc.identifier.issn
1930-2126
dc.identifier.uri
http://hdl.handle.net/11336/43206
dc.description.abstract
Organosolv lignins can replace petroleum chemicals such as phenol either partially or totally in various applications. Eight lignins, seven of which corresponded to the ethanol-water fractionation of bagasse and the other to a reference lignin (Alcell®) were analyzed with the aim to evaluate their chemical and physicochemical characteristics. The purity of the lignin fractions was determined by high pressure liquid chromatography (HPLC) and by ash content. Fourier Transform-Infrared Spectroscopy (FTIR) techniques and differential UV spectroscopy were applied to identify the chemical groups in the lignin samples. The molecular weight distribution was determined by size exclusion chromatography (HPSEC). Thermogravimetric analysis (TGA) and differential scanning calorimetry (DSC) techniques were used to determine the mass loss due to the high temperature treatment. The lignins studied showed the presence of p-hydroxyphenyl (H unit) and a greater proportion of guaiacyl (G unit) moieties, lower purity, similar or greater amount of phenolic hydroxyl groups, and higher degradation temperatures, than the Alcell® ligni
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
North Carolina State University. Department of Wood and Paper Science
dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
Lignin
dc.subject
Ethanol-Water Fractionation
dc.subject
Hpsec
dc.subject
Infrared Spectroscopy
dc.subject
Thermal Analysis
dc.subject.classification
Otras Ingeniería Química
dc.subject.classification
Ingeniería Química
dc.subject.classification
INGENIERÍAS Y TECNOLOGÍAS
dc.title
Chemical and physico-chemical characterization of lignins obtained from the ethanol-water fractionation of bagasse
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2018-04-18T15:20:24Z
dc.identifier.eissn
1930-2126
dc.journal.volume
6
dc.journal.number
2
dc.journal.pagination
1158-1171
dc.journal.pais
Estados Unidos
dc.journal.ciudad
Raleigh
dc.description.fil
Fil: Vallejos, María Evangelina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Nordeste. Instituto de Materiales de Misiones. Universidad Nacional de Misiones. Facultad de Ciencias Exactas Químicas y Naturales. Instituto de Materiales de Misiones; Argentina
dc.description.fil
Fil: Felissia, Fernando Esteban. Universidad Nacional de Misiones; Argentina
dc.description.fil
Fil: Curvelo, Antonio Aprigio da Silva. Universidade de Sao Paulo; Brasil. Centro Nacional de Pesquisa Em Energia E Materiais; Brasil
dc.description.fil
Fil: Zambon, Marcia D.. Universidade de Sao Paulo; Brasil
dc.description.fil
Fil: Ramos, Luis Enrique. Universidade de Sao Paulo; Brasil
dc.description.fil
Fil: Area, Maria Cristina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Nordeste. Instituto de Materiales de Misiones. Universidad Nacional de Misiones. Facultad de Ciencias Exactas Químicas y Naturales. Instituto de Materiales de Misiones; Argentina
dc.journal.title
Bioresources
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/http://ojs.cnr.ncsu.edu/index.php/BioRes/article/view/BioRes_06_2_1158_Vallejos_FCZRA_Lignin_Fractions
Archivos asociados