Condensation of lignin in dioxane-water-HCl
作者： Dimitris S. Argyropoulos , Henry I. Bolker
DOI: 10.1080/02773818708085249
关键词: Extraction (chemistry) 、 Black spruce 、 Polymer 、 Chemistry 、 Lignin 、 Chromatography 、 Nuclear chemistry 、 Gel permeation chromatography 、 Low-angle laser light scattering 、 Fractionation 、 Sawdust
摘要: Abstract Black spruce sawdust, when treated batchwise, in accordance with the principles of gel degradation theory, dioxane: H2O:HCl (90:8:1.8 by volume) at various extents lignin solubilization, gave a series fractions. The undialyzed preparations, characterized Klason lignin, methoxy contents, microanalysis, and U.V. absorptivity, were found to be reasonably uniform composition. Gel permeation chromatography combination refractive index (RI) Low Angle Laser Light Scattering (LALLS) detection fractions that qualitatively resembled those obtained synthetic model polymer gels. In efforts quantitatively correlate molecular weights (M w) these lignins existing models, however, problems fluorescence, association recondensation encountered. During batchwise dioxane:H2O:HCl extraction wood, irreversible fragments took place, limiting analysis th...
sci-hub.se 参考文章(18)
Tatsuko Hatakeyama, Shigeo Hirose, Hyoe Hatakeyama, Differential scanning calorimetric studies on bound water in 1,4‐dioxane acidolysis lignin Macromolecular Chemistry and Physics. ,vol. 184, pp. 1265- 1274 ,(1983) , 10.1002/MACP.1983.021840616
Ezio Nokihara, M. Jean Tuttle, Vincent F. Felicetta, Joseph L. McCarthy, Lignin. VIII. Molecular Weights of Lignin Sulfonates during Delignification by Bisulfite-Sulfurous Acid Solutions Journal of the American Chemical Society. ,vol. 79, pp. 4495- 4499 ,(1957) , 10.1021/JA01573A065
Henry I. Bolker, Heather E. W. Rhodes, Kuen Sing Lee, Degradation of insoluble lignin by chlorine monoxide Journal of Agricultural and Food Chemistry. ,vol. 25, pp. 708- 716 ,(1977) , 10.1021/JF60212A061
Johnson F. Yan, Donald C. Johnson, Molecular weight distribution in the lignin sol Journal of Agricultural and Food Chemistry. ,vol. 28, pp. 850- 855 ,(1980) , 10.1021/JF60230A049
Knut Lundquist, Lennart Ericsson, Sune Karlsson, F. Solymosy, Akira Shimizu, Acid Degradation of Lignin. III. Formation of Formaldehyde. Acta Chemica Scandinavica. ,vol. 24, pp. 3681- 3686 ,(1970) , 10.3891/ACTA.CHEM.SCAND.24-3681
Vincent F. Felicetta, Joseph L. McCarthy, Lignin. IX. Molecular Weights of Lignin Sulfonates as Influenced by Certain Acidic Conditions Journal of the American Chemical Society. ,vol. 79, pp. 4499- 4502 ,(1957) , 10.1021/JA01573A066
Johnson F. Yan, Cross-Linking of Polymers with a Primary Size Distribution Macromolecules. ,vol. 12, pp. 260- 264 ,(1979) , 10.1021/MA60068A019
Johnson F. Yan, F. Pla, R. Kondo, M. Dolk, J. L. McCarthy, Lignin. 21. Depolymerization by bond cleavage reactions and degelation Macromolecules. ,vol. 17, pp. 2137- 2142 ,(1984) , 10.1021/MA00140A046
Simo Sarkanen, David C. Teller, John Hall, Joseph L. McCarthy, Lignin. 18. Associative effects among organosolv lignin components Macromolecules. ,vol. 14, pp. 426- 434 ,(1981) , 10.1021/MA50003A037
Stig R. Erlander, Dexter French, Acid hydrolysis and molecular weights of various corn amylopectin and glycogen Journal of Polymer Science. ,vol. 32, pp. 291- 316 ,(1958) , 10.1002/POL.1958.1203212503