Jebrane, Mohamed
- Institutionen för skogens produkter, Sveriges lantbruksuniversitet
Sammanfattning
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.
Nyckelord
boronated wood; carboxyphenylboronic acid pinacol ester; leachability; permanent fixation; transesterification
Publicerad i
Holzforschung
2016, volym: 70, nummer: 6, sidor: 577-583
SLU författare
Associerade SLU-program
Giftfri miljö
UKÄ forskningsämne
Organisk kemi
Materialkemi
Pappers-, massa- och fiberteknik
Publikationens identifierare
- DOI: https://doi.org/10.1515/hf-2015-0118
Permanent länk till denna sida (URI)
https://res.slu.se/id/publ/69343