The Progress of Ageing of Lignin-containing Paper Induced by Light and its Relation to Chemiluminescence - Temperature Runs

Lignin‐containing papers from different sources and of different age were irradiated by the visible light and the progress of the degradation reaction was followed by non‐isothermal chemiluminescence method. Kinetic data obtained for papers degraded in oxygen were compared with double fold endurance...

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Bibliographic Details
Published in:Macromolecular symposia 2005-12, Vol.231 (1), p.178-192
Main Authors: Rychly, Jozef, Matisova-Rychla, Lyda, Bukovsky, Vladimir, Pletenikova, Martina, Vrska, Milan
Format: Article
Language:English
Subjects:
Aging
Applied sciences
Carbonyl groups
Cellulose
Cellulose and derivatives
Chemiluminescence
deacidification
Degradation
double folds
Durability
Endurance
Exact sciences and technology
lignin
Lignin and derivatives
Natural polymers
Paper, paperboard, non wovens
Physicochemistry of polymers
Polymer industry, paints, wood
Properties and testing
Wood. Paper. Non wovens
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Summary:Lignin‐containing papers from different sources and of different age were irradiated by the visible light and the progress of the degradation reaction was followed by non‐isothermal chemiluminescence method. Kinetic data obtained for papers degraded in oxygen were compared with double fold endurance test and carbonyl groups concentration. The effect of lignin on degradation of cellulose after deacidification treatment of the paper by methoxymagnesium methylcarbonate (MMMC) was ascertained and a mechanism of co‐oxidation of lignin and cellulose in originally alkaline conditions was outlined.
ISSN:1022-1360
1521-3900
DOI:10.1002/masy.200590022