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foerbaettrad ligninavlaegsning ur cellulosa.
foerbaettrad ligninavlaegsning ur cellulosa.
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机译:改善了木质素从纤维素的沉积。
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摘要
The extent of delignification of chemical pulps by oxygen-containing chemicals, preferably hydrogen peroxide, is enhanced by demethylating the pulp prior to such oxidative delignification, to a degree of demethylation of at least about 30%, preferably at least about 50%. Demethylation may be achieved by chemical treatment of the already-formed pulp or by modification to the pulping process to result in demethylated pulp.
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