|
Title
Kraft pulp oxidation and its influence on recycling characteristics of fibres
Authors
Xianliang Song and Kwei-Nam Law
Received
July 23, 2009
Published
Volume 44 Issue 7-8 July-August
Keywords
carboxylic acid, hornification, oxidation, recycling
Abstract
The work examines the effects of TEMPO-mediated 2,2,6,6-tetramethyl-1-piperidinyloxy (4-acetmido- TEMPO) oxidation on the characteristics of fibres and the recycling behaviour of oxidized fibres. Oxidation had a significant impact on fibre and paper properties, being dependent on the degree of oxidation. Generally, high-level oxidation had a negative effect on the beating degree of pulp, sheet density, folding endurance of paper and fibre bonding. However, pre-oxidation of once-dried fibres prior to secondary recycling could minimize the adverse influence of hornification.
Link
|
