Jebrane, Mohamed
- Department of Forest Products, Swedish University of Agricultural Sciences
Abstract
Vinyl ester of 4-carboxyphenylboronic acid has been synthesized and tested as reactive reagent for permanent fixation of boron in wood based on an improved approach described previously. The essence of the method is a covalent incorporation of the boron compound via transesterification between wood hydroxyl groups and vinyl ester containing boron. The synthesis of this vinyl ester was accomplished by exchange reaction of vinyl acetate with 4-carboxyphenylboronic acid. The obtained vinyl ester of carboxyphenylboronic acid was characterized by FTIR and H-1-, and C-13-NMR spectroscopy. The covalent fixation of boron to wood's hydroxyl groups was achieved through potassium carbonate (K2CO3) catalyzed transesterification of the vinyl ester containing boron. The transesterification was confirmed by weight percentage gain (WPG) calculation, curcumin staining, FTIR, and C-13 CP-MAS NMR spectroscopy. The efficiency of the reaction improved with increasing temperature and reaction time.
Keywords
boronated wood; carboxyphenylboronic acid pinacol ester; leachability; permanent fixation; transesterification
Published in
Holzforschung
2016, volume: 70, number: 6, pages: 577-583
SLU Authors
Associated SLU-program
Non-toxic environment
UKÄ Subject classification
Organic Chemistry
Materials Chemistry
Paper, Pulp and Fiber Technology
Publication identifier
- DOI: https://doi.org/10.1515/hf-2015-0118
Permanent link to this page (URI)
https://res.slu.se/id/publ/69343