A Study on Capillary-porous Structure of Wood Modified with Boron-Nitrogen Compounds

Published Date
Procedia Engineering
2016, Vol.153:687–691, doi:10.1016/j.proeng.2016.08.227
XXV Polish – Russian – Slovak Seminar “Theoretical Foundation of Civil Engineering"
Open Access, Creative Commons license

Author 

• Irina V. Stepina ^,

• Moscow State University of Civil Engineering (National Research University), 26 Yaroslavskoye Chaussee, Moscow, 129337, Russia

Available online 24 August 2016.

Abstract

Capillary-porous structure of wood modified with boron-nitrogen compounds was studies by sorption methods. Specific surface area of the suport was found to be reduced up to three folds.Changes of structure of the wood surface layer treated with aqueas solutions of boric acid and ethanolamines as well as the possibility of forming 4-coordinate boron-nitrogen compounds in situ, directly on the wood surface, were investigated. Stepwise treatment of wood surface with boric acid and ethanolamines in different order was found not to cause significant changes in the capillary-porous structure, which is apparently due to the difficulties of formation of 4-coordinate boron-nitrogen compounds in situ.

Keywords

capillary-porous structure

specific surface area

crystallinity index

modified wood

sorption

hydrophilicity

boron-nitrogen compounds.

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