Determination of the distribution of wood resin in handsheets by confocal laser scanning microscopy

A4 Conference proceedings


Internal Authors/Editors


Publication Details

List of Authors: Stefan Willför, Anna Sundberg, Christer Eckerman, Bjarne Holmbom
Publisher: CPPA
Place: Montreal
Publication year: 1997
Publisher: Canadian Pulp and Paper Association
Book title: ISWPC : 9th International Symposium on Wood and Pulping Chemistry, June 9-12, 1997
Start page: 1191
End page: 1193
Number of pages: 3
ISBN: 1-896742-15-7


Abstract

A method for determining the resin distribution in handsheets was developed. The method involves staining of resin dissolved in acetone with a fluorescent dye and injecting the resin into water, followed by removal of the acetone from the resin dispersion by dialysis. After sheet preparation, using a cationic fixing agent to aggregate the resin, the sheets are examined with confocal laser scanning microscopy. In this model system the resin did not become uniformly distributed on the fibres in the sheets. Resin aggregates from 1 mu m up to about 10 mu m could be observed. These aggregates are of the size that can be expected with the fixing agent used.


Keywords

confocal laser scanning microscopy, handsheets, kraft pulp, lipophilic extractives, resin distribution, wood resin

Last updated on 2019-20-08 at 07:17