Analytical Methods in Wood Chemistry, Pulping, and PapermakingEero Sjöström, Raimo Alen Springer Science & Business Media, 9 mar 2013 - 318 pagine In its broadest sense, and according to the traditional conception, wood chemistry is a comprehensive discipline, ranging from fundamental studies to practical applications. The manifold constituents, located in different morphological regions in the wood, results in an extreme complexity of wood chemistry. Ever more sophisticated endeavors needing fundamental studies and advanced analytical methods are necessary in order to delve deeper into various problems in pulping and papermaking. Gradually, new, improved ana lytical methods, originally developed for research purposes, are currently replacing many of the old "routine" methods in practical applications. Because of the expanse of the subject, an attempt to write a book of this size about analytical methods seems, perhaps, too ambitious. Of course, a whole book series of several volumes would be necessary to cover this topic completely. However, there is undoubtedly a need for a more condensed presentation which does not go into experimental details, but is limited to the basic principles of the analytical methods and illustrates their applica tions. The emphasis is on more advanced and potential methods, and partic ularly on those based on different types of spectroscopy and chromatography. |
Dall'interno del libro
Risultati 1-5 di 28
Pagina 4
... xylan are cleaved only partially), the content of both cellulose and various hemicelluloses can be calculated fairly accurately on the basis of the chromatographic analysis of the monosaccharides in hydrolyzates. No simple methods are ...
... xylan are cleaved only partially), the content of both cellulose and various hemicelluloses can be calculated fairly accurately on the basis of the chromatographic analysis of the monosaccharides in hydrolyzates. No simple methods are ...
Pagina 7
... xylan, no acetyl groups are present. Glucuronoxylan (hardwood constituent) is composed of the same framework as the arabinoglucuronoxylan, but it contains much fewer uronic acid substituents. No arabinose units are present and the ...
... xylan, no acetyl groups are present. Glucuronoxylan (hardwood constituent) is composed of the same framework as the arabinoglucuronoxylan, but it contains much fewer uronic acid substituents. No arabinose units are present and the ...
Pagina 12
... xylan and correspondingly less (galacto)glucomannans than the other cells. 1.3.2 Composition of Cell Walls The cell wall layers can be studied in situ by microscopic techniques, often in combination with spectroscopic methods. For a ...
... xylan and correspondingly less (galacto)glucomannans than the other cells. 1.3.2 Composition of Cell Walls The cell wall layers can be studied in situ by microscopic techniques, often in combination with spectroscopic methods. For a ...
Pagina 13
... xylan that S, and S,. Later studies, based on fractionation, do not agree with these findings, and it has been reported that the concentrations of both galactoglucomannans and arabinoglucuronoxylan are even throughout the cell wall. In ...
... xylan that S, and S,. Later studies, based on fractionation, do not agree with these findings, and it has been reported that the concentrations of both galactoglucomannans and arabinoglucuronoxylan are even throughout the cell wall. In ...
Pagina 14
Eero Sjöström, Raimo Alen. Layer Cellulose GGMa Xylan Other polys." Lignin aGalactoglucomannan. "Various polysaccharides, mainly pectic substances. Fig. 1.4. Transverse section of softwood tracheids (earlywood of tamarack Larix laricina) ...
Eero Sjöström, Raimo Alen. Layer Cellulose GGMa Xylan Other polys." Lignin aGalactoglucomannan. "Various polysaccharides, mainly pectic substances. Fig. 1.4. Transverse section of softwood tracheids (earlywood of tamarack Larix laricina) ...
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Altre edizioni - Visualizza tutto
Analytical Methods in Wood Chemistry, Pulping, and Papermaking Eero Sjöström,Raimo Alén Anteprima limitata - 1998 |
Analytical Methods in Wood Chemistry, Pulping, and Papermaking Eero Sjöström,Raimo Alen Anteprima non disponibile - 2010 |
Analytical Methods in Wood Chemistry, Pulping, and Papermaking Eero Sjöström,Raimo Alén Anteprima non disponibile - 2012 |
Parole e frasi comuni
acetic acids addition alkaline amounts analysis analyzed applied aromatic atoms black liquors bleaching bonds carbohydrates carbon carboxylic acids cell wall cellulose characterization Chem chemical chemistry chlorine chromatography column complex components composition compounds concentrations contain degradation depends derivatives derivatization detection determination dissolved distribution effect effluents electrons elements especially esters et al ether example extractives fibers followed formed fraction give hardwood hemicelluloses HMWMs hydrolysis hydroxyl groups identification important inorganic ions isolated kraft pulps lignin mainly mass material measured methods methyl mill mixture molecular weight Niemelä obtained occur OH OH organic origin oxidation phenolic polymer polysaccharides possible preparation present procedure quantitative reaction residual resin acids sample separation Sjöström sodium softwood solid soluble solution solvent spectra spectroscopy standard structures studies sulfite surface Table Tappi techniques tion types units usually various wood xylan York ОН