Journal of Thermal Analysis and Calorimetry
Volume/Issue:
Volume 1: Issue 1
Thermal degradation of sulphuric acid lignins of hard wood
Authors:
G. E. Domburg Institute of Wood Chemistry Academy of Sciences of the Latvian SSR Riga

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and
V. N. Sergeeva Institute of Wood Chemistry Academy of Sciences of the Latvian SSR Riga

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Pages:
53–62
Online Publication Date:
23 Jul 2005
Publication Date:
01 Mar 1969
Article Category:
Research Article
DOI:
https://doi.org/10.1007/bf01911246
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The process of thermal degradation of lignins of hard wood (birch, aspen, oak), obtained under the wood treatment with 66% sulphuric acid in the form of acid-in-soluble and soluble fractions, has been investigated by thermal methods. Activation energy values of lignin pyrolysis have been determined at the stage of increasing rate of weight loss. It has been established that the difference in their thermal properties is conditioned by the structural changes in the process of isolation from wood. It has been suggested that acid-soluble lignins have a higher density than acid-insoluble ones. Sulphuric acid lignins of birch, in particular acid-soluble lignin, are assumed to possess a more homogeneous structure than sulphuric acid lignins of other species

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Cover Journal of Thermal Analysis and Calorimetry
Journal of Thermal Analysis and Calorimetry
Print ISSN:
1388-6150
Online ISSN:
1572-8943

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Journal of Thermal Analysis and Calorimetry
Language English
Size A4
Year of
Foundation		 1969
Volumes
per Year		 1
Issues
per Year		 24
Founder Akadémiai Kiadó
Founder's
Address		 H-1117 Budapest, Hungary 1516 Budapest, PO Box 245.
Publisher Akadémiai Kiadó
Springer Nature Switzerland AG
Publisher's
Address		 H-1117 Budapest, Hungary 1516 Budapest, PO Box 245.
CH-6330 Cham, Switzerland Gewerbestrasse 11.
Responsible
Publisher		 Chief Executive Officer, Akadémiai Kiadó
ISSN 1388-6150 (Print)
ISSN 1588-2926 (Online)

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