2008
DOI: 10.1002/app.28059
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Some physical properties of acetosolv lignins from bagasse

Abstract: Acetosolv-solubilized lignins were characterized by their solubility in different organic solvents, Fourier transform infrared, 13 C-NMR, UV, gel permeation chromatography, differential scanning calorimetry, and thermogravimetric analysis. Solvents having a solubility parameter in the range of 10-12.7 and a hydrogenbonding parameter in the range of 3.6-5 were considered good solvents for acetosolv lignins. Fourier transform infrared spectra of the lignins were typical for lignins containing p-hydroxy phenylpro… Show more

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Cited by 63 publications
(29 citation statements)
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“…Due to the capability of hydrogen bonding, the hydrogen bonding parameter of organic solvents such as ethanol or methanol is much higher than other organic solvents. The hydrogen bonding parameter was used to evaluate the hydrogen bonding capacities of the organic solvents for the solubility of lignin because hydrogen bonding is a major molecular interaction between hydroxyl groups of lignins and the organic solvents with the ability to form hydrogen bonding (Pan and Sano 1999;Shukry et al 2008).…”
Section: Computing Solubility Parameter Of Lignin and Acetylated Ligninmentioning
confidence: 99%
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“…Due to the capability of hydrogen bonding, the hydrogen bonding parameter of organic solvents such as ethanol or methanol is much higher than other organic solvents. The hydrogen bonding parameter was used to evaluate the hydrogen bonding capacities of the organic solvents for the solubility of lignin because hydrogen bonding is a major molecular interaction between hydroxyl groups of lignins and the organic solvents with the ability to form hydrogen bonding (Pan and Sano 1999;Shukry et al 2008).…”
Section: Computing Solubility Parameter Of Lignin and Acetylated Ligninmentioning
confidence: 99%
“…Pyridine is also a good lignin solvent, having an even smaller solubility parameter than lignin. This behavior can be explained by an acid-base interaction between pyridine and the phenolic groups in lignin, which results in the high solubility of lignin in pyridine (Shukry et al 2008). It is important to note that the chemical interactions such as the acid-base interaction are not considered in Hildebrand theory.…”
Section: Fig 1 Solubility Of 100 Mg Lignin In 10 ML Of Different Ormentioning
confidence: 99%
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