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Items for "phenolic hydroxyl groups"

A new method for the titration of free phenolic groups in pulps

A fast and semi-quantitative wet chemical method was developed for the titration of free phenolic groups in residual lignins of pulps...

Keywords: cellulose pulps, chemical analysis, chlorine dioxide, in-pulp method, lignins, phenolic hydroxyl groups, rapid testing method

05/2007 | Holzforschung, Walter de Gruyter

The role of non-phenolic lignin in chlorate-forming reactions during chlorine dioxide bleaching of softwood kraft pulp

The affect of phenolic hydroxyl groups on the reaction efficiency during chlorine dioxide pre-bleaching of a softwood kraft pulp was investigated...

Keywords: chlorate, chlorine dioxide, inorganic reactions, Kinetics, phenolic hydroxyl groups

02/2005 | Holzforschung, Walter de Gruyter

Study of the oxygen effect on mechanical pulp lignin using an improved lignin isolation method

Lignins from kraft and mechanical pulps were isolated before and after oxygen treatment with conventional methods (acidolysis and enzymatic isolation) and with a novel two-step method combining an enzymatic treatment and acidolysis...