2025, Volume 71(75), Issue 4 (December), pp. 93 - 104

Unconventional Heat Insulation Birch Wood Material Made Through Delignification Procedure

LUCIAN PĂUNESCU, National University of Science and Technology “Politehnica”, Faculty of Applied Chemistry and Materials Science, Research Center for Environmental Protection and Eco-Friendly Technologies, Bucharest, Romania, lucianpaunescu16@gmail.com
ENIKÖ VOLCEANOV, National University of Science and Technology “Politehnica”, Faculty of Engineering in Foreign Language, Bucharest, Romania
ADRIAN IOANA, National University of Science and Technology “Politehnica”, Faculty of Materials Science and Engineering, Bucharest, Romania
SORIN MIRCEA AXINTE, National University of Science and Technology “Politehnica”, Faculty of Applied Chemistry and Materials Science, Bucharest, Romania; Daily Sourcing & Research SRL, Bucharest, Romania
BOGDAN VALENTIN PĂUNESCU, , Consitrans SA, Bucharest, Romania

pages 93 - 104   Download
DOI: 10.5281/zenodo.19660415

Abstract
Wood waste delignification is a process known and used for longer time in the pulp and paper industry, whose technological adoption is necessary for producing wood foam. The new cellular wood manufacturing procedure is attractive for the production of a cheap and effective insulating material for the building construction sector. Experimental testing of several tree wood types was initiated in recent decades and the team of the current paper authors was also recently involved in this research. The current paper aimed at testing the behaviour of birch wood in foaming made by delignification of waste in the form of sawdust. The work originality results from the premiere use of birch wood in the manufacturing process of a stable foam. Utilizing wood waste, nanoclay, an adequate surfactant, and distilled water as well as a heat treatment at 75ºC, products with peculiarities suitable to established objective were obtained.
Keywords: birch wood, lignin, delignification, sawdust, insulation properties.