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Wood waterproofing and lignin crosslinking by means of chromium trioxide/guajacyl units complexes
Author(s) -
Pizzi A.
Publication year - 1980
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.1980.070251110
Subject(s) - chromium trioxide , chromium , lignin , lignosulfonates , waterproofing , chromium compounds , chemistry , antimony trioxide , organic chemistry , trioxide , materials science , polymer chemistry , nuclear chemistry , composite material , raw material , sulfur
A CrO 3 /guajacyl polymeric complex was prepared and characterized. The increased crosslinking of the lignin network in wood afforded by the equivalent CrO 3 /guajacyl units complexes as well as the insolubility of these complexes are the cause of the enhanced water resistance presented by the CrO 3 ‐treated wood. Chromium trioxide was found to be the complexing species. Chromium (VI) was not reduced to chromium (III) during the treatment. A parallel with the lignosulfonates/dichromate gel formation was made.