Analytical pyrolysis of alcohol bisulfite lignin

• Published in: Journal of analytical and applied pyrolysis Vol. 31; pp. 239 - 247
• Main Authors: Kuroda, Ken-ichi, Mun, Sung-Phil, Sakai, Kokki
• Format: Journal Article
• Language: English
• Published: Amsterdam Elsevier B.V 01.02.1995; Elsevier
• Subjects: Alcohol bisulfite lignin; Applied sciences; Exact sciences and technology; Japanese cedar ( Cryptomeria japonica D. Don); Lignin and derivatives; Natural polymers; Physicochemistry of polymers; Pryolysis gas chromatography/mass spectrometry; Pyrolysis; Pyrolysis-gas chromatography; Pryolysis gas chromatography/mass spectrometry; Pyrolysis; Alcohol bisulfite lignin; Japanese cedar ( Cryptomeria japonica D. Don); Pyrolysis-gas chromatography; Lignin; Chemical analysis; Cryptomeria japonica; Pyrolytic chromatography; Gymnospermae; Alcohol; Coniferales; Spermatophyta; Softwood; Bisulfite pulp
• ISSN: 0165-2370; 1873-250X
• DOI: 10.1016/0165-2370(94)00839-S

A high molecular weight lignin fraction, alcohol bisulfite lignin, was isolated from the spent liquor of alcohol bisulfite pulping of Japanese cedar ( Cryptomeria japonica D. Don) wood and subjected to analytical pyrolysis. The resulting products were compared with those from the original wood, its milled wood lignin and a synthetic lignin. The alcohol bisulfite lignin yielded several characteristic pyrolysis products compared with the other samples: a large yield of 4-propylguaiacol and small amounts of methylated compounds. Furthermore, analytical pyrolysis of the alcohol bisulfite lignin gave a much smaller yield of coniferyl alcohol than that from Japanese cedar wood. These differences are due to the chemical change in the lignin structure as a result of the alcohol bisulfite treatment.