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The kinetics of the spontaneous, proton- and [Al.sup.III]-catalysed hydrolysis of 1,5-anhydrocellobiitol--models for cellulose depolymerization in paper aging and alkaline pulping, and a benchmark for cellulase efficiency (1).
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Introduction
The loss of mechanical strength of cellulose fibres with age is an important limiting factor in the preservation of paper documents and, to a lesser extent, textiles. The degradation of paper in particular threatens much of our written cultural heritage (1). Loss of paper strength is associated with a decrease in the degree of polymerization (DP) of the cellulose in the paper fibres (2a). Some depolymerization arises from initial oxidation of the hydroxyls in cellulose to carbonyl groups, which can then promote E1cb-like elimination of O4 and its ...
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