Structural features of dioxane lignin from Eucalyptus globulus and their relationship with the pulp yield of contrasting genotypes
The chemical structure of dioxane lignins isolated from two groups of Eucalyptus globulus genotypes with contrasting pulpwood characteristics were evaluated. Six genotypes were selected and separated in two groups (G1 and G2) based on differences in wood density, pulp yield and chemical characterist...
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Universidad del Bío-Bío
2015
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oai:scielo:S0718-221X20150003000152015-12-04Structural features of dioxane lignin from Eucalyptus globulus and their relationship with the pulp yield of contrasting genotypesAguayo,María GracielaRuiz,JoséNorambuena,MarcelaTeixeira Mendonça,Regis Dioxane lignin kraft pulping Eucalyptus globulus FTIR 31P NMR spectroscopy The chemical structure of dioxane lignins isolated from two groups of Eucalyptus globulus genotypes with contrasting pulpwood characteristics were evaluated. Six genotypes were selected and separated in two groups (G1 and G2) based on differences in wood density, pulp yield and chemical characteristics. Lignin was isolated from both milled wood and kraft pulps produced at kappa number 16, and were characterized by different techniques such as FTIR, elemental analysis, molar mass distribution and 31P NMR spectroscopy. From the different characteristics evaluated, some were determined as more relevant, such as syringyl (S) and guaiacyl (G) amounts, S/G ratio and condensed biphenyl units, were correlated with the pulp yield. High correlations were found between pulp yield and syringyl units (R² = 0,69), and pulp yield and syringyl/guaicyl ratio (R² = 0,88). The condensed 5-5 biphenyl units presented a negative correlation with pulp yield (R² = 0,76). The information obtained explained part of the difference in pulpability of the contrasting genotypes and can be used for the selection and improvement of the species for the pulp and paper industry.info:eu-repo/semantics/openAccessUniversidad del Bío-BíoMaderas. Ciencia y tecnología v.17 n.3 20152015-07-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-221X2015000300015en10.4067/S0718-221X2015005000055 |
| institution |
Scielo Chile |
| collection |
Scielo Chile |
| language |
English |
| topic |
Dioxane lignin kraft pulping Eucalyptus globulus FTIR 31P NMR spectroscopy |
| spellingShingle |
Dioxane lignin kraft pulping Eucalyptus globulus FTIR 31P NMR spectroscopy Aguayo,María Graciela Ruiz,José Norambuena,Marcela Teixeira Mendonça,Regis Structural features of dioxane lignin from Eucalyptus globulus and their relationship with the pulp yield of contrasting genotypes |
| description |
The chemical structure of dioxane lignins isolated from two groups of Eucalyptus globulus genotypes with contrasting pulpwood characteristics were evaluated. Six genotypes were selected and separated in two groups (G1 and G2) based on differences in wood density, pulp yield and chemical characteristics. Lignin was isolated from both milled wood and kraft pulps produced at kappa number 16, and were characterized by different techniques such as FTIR, elemental analysis, molar mass distribution and 31P NMR spectroscopy. From the different characteristics evaluated, some were determined as more relevant, such as syringyl (S) and guaiacyl (G) amounts, S/G ratio and condensed biphenyl units, were correlated with the pulp yield. High correlations were found between pulp yield and syringyl units (R² = 0,69), and pulp yield and syringyl/guaicyl ratio (R² = 0,88). The condensed 5-5 biphenyl units presented a negative correlation with pulp yield (R² = 0,76). The information obtained explained part of the difference in pulpability of the contrasting genotypes and can be used for the selection and improvement of the species for the pulp and paper industry. |
| author |
Aguayo,María Graciela Ruiz,José Norambuena,Marcela Teixeira Mendonça,Regis |
| author_facet |
Aguayo,María Graciela Ruiz,José Norambuena,Marcela Teixeira Mendonça,Regis |
| author_sort |
Aguayo,María Graciela |
| title |
Structural features of dioxane lignin from Eucalyptus globulus and their relationship with the pulp yield of contrasting genotypes |
| title_short |
Structural features of dioxane lignin from Eucalyptus globulus and their relationship with the pulp yield of contrasting genotypes |
| title_full |
Structural features of dioxane lignin from Eucalyptus globulus and their relationship with the pulp yield of contrasting genotypes |
| title_fullStr |
Structural features of dioxane lignin from Eucalyptus globulus and their relationship with the pulp yield of contrasting genotypes |
| title_full_unstemmed |
Structural features of dioxane lignin from Eucalyptus globulus and their relationship with the pulp yield of contrasting genotypes |
| title_sort |
structural features of dioxane lignin from eucalyptus globulus and their relationship with the pulp yield of contrasting genotypes |
| publisher |
Universidad del Bío-Bío |
| publishDate |
2015 |
| url |
http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-221X2015000300015 |
| work_keys_str_mv |
AT aguayomariagraciela structuralfeaturesofdioxaneligninfromeucalyptusglobulusandtheirrelationshipwiththepulpyieldofcontrastinggenotypes AT ruizjose structuralfeaturesofdioxaneligninfromeucalyptusglobulusandtheirrelationshipwiththepulpyieldofcontrastinggenotypes AT norambuenamarcela structuralfeaturesofdioxaneligninfromeucalyptusglobulusandtheirrelationshipwiththepulpyieldofcontrastinggenotypes AT teixeiramendoncaregis structuralfeaturesofdioxaneligninfromeucalyptusglobulusandtheirrelationshipwiththepulpyieldofcontrastinggenotypes |
| _version_ |
1714202604947374080 |