DISCOLORATION OF HIGH-YIELD PULPS .1. INFLUENCE OF PH AND BLEACHING ON SPRUCE TMP

Authors
LAI YZ SUZUKI T OMORI S
Citation
Yz. Lai et al., DISCOLORATION OF HIGH-YIELD PULPS .1. INFLUENCE OF PH AND BLEACHING ON SPRUCE TMP, Cellulose Chemistry and Technology, 27(1), 1993, pp. 79-85
Citations number
13
Categorie Soggetti
Materials Science, Paper & Wood
Journal title
Cellulose Chemistry and Technology → ACNP
ISSN journal
05769787
Volume
27
Issue
1
Year of publication
1993
Pages
79 - 85
Database
ISI
SICI code
0576-9787(1993)27:1<79:DOHP.I>2.0.ZU;2-E
Abstract
The pH of fiber suspension prior to sheet fermentation has a significa nt influence on the brightness of Norway spruce TMP. The maximum brigh tness for unbleached samples was around pH 3-4, while it occurred as a plateau over the pH-range 5-8 in the case of bleached samples. The pH -dependent discoloration was higher in alkaline than in acidic regions .