Wood waterproofing and lignin crosslinking by means of chromium trioxide/guajacyl units complexes | Zendy

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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.

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