Characterization of Photo-Yellowing Trigger Compounds Repressing Paper Recyclability of Eucalyptus globulus by Pyrolysis-GC/MS

Direct analysis of phenolic extractives in wood by thermochemolysis-gas chromatography in the presence of tetrabutylammonium hydroxide

“…By using this technique, the phenolic components generated in degraded lignin moieties of humic acids during coalification were analyzed without suffering any interference from the products having the original methoxyl groups [10]. Moreover, the authors recently applied a similar technique to elucidate lignin structure causing photo-yellowing in chemithermomechanical pulp (CTMP) papers [11]. The use of TBAH as an organic alkali enabled us to characterize lignin moieties in CTMP papers with discriminating between the methoxyl and free hydroxyl groups.…”

Rapid and direct characterization of total fatty acids in wood by thermochemolysis–gas chromatography–flame ionization detector/mass spectrometry with tetrabutylammonium hydroxide

“…One organic alkali -tetrabutylammonium hydroxide (TBAH) -has been used for the analysis of isolated lignin [14], humic acids extracted from low-rank coals [15], sizing agent in paper [16], phenolic extractives in wood [17], and lignin causing photoyellowing in chemithermomechanical pulp paper [18] by thermochemolysis-GC. The use of TBAH introduces butyl group instead of methyl group in the case of TMAH into the hydroxyl group to discriminate the originally presented methoxyl group from the free hydroxyl group in lignin.…”

Evaluation of acidic paper deterioration in library materials by pyrolysis-gas chromatography

“…Material demand for analysis of library books and documents could also be minimized by Py-GC. So far, the authors have successfully characterized the photo-yellowing trigger compounds [7] and determined various additives, applied in trace amounts, in paper [8][9][10][11] by Py-GC.…”