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Wood Research and Technology


Cellulose – Hemicelluloses – Lignin – Wood Extractives

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Volume 71, Issue 7-8


Biomass conversion into blow-in heat insulation materials by steam explosion

14th European Workshop on Lignocellulosics and Pulp (EWLP), Grenoble, France, June 28–30, 2016

Martins Andzs / Ramunas TupciauskasORCID iD: http://orcid.org/0000-0002-5172-1946 / Andris Veveris / Laura Andze / Janis Abolins / Janis Gravitis
Published Online: 2017-06-28 | DOI: https://doi.org/10.1515/hf-2016-0188


The study of converting grey alder (Alnus incana) chips and silver birch (Betula pendula) flakes – residues from plywood manufacture – into blow-in insulation material by steam explosion (SE) is reported. The SE was conducted at temperatures between 200 and 235°C, for 0–5 min at pressures between 16 and 32 MPa. The severity parameters (logR0) of the SE was calculated, from which logR0≈3.6 was the most appropriate for production of blow-in materials. Thermal conductivity of the obtained insulating material was found to be in the range of 0.053–0.057 W m−1·K−1.

Keywords: auto-hydrolysis; birch flakes; blow-in heat insulation; grey alder; steam explosion; thermal conductivity


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About the article

Received: 2016-10-15

Accepted: 2017-05-23

Published Online: 2017-06-28

Published in Print: 2017-07-26

Citation Information: Holzforschung, Volume 71, Issue 7-8, Pages 641–644, ISSN (Online) 1437-434X, ISSN (Print) 0018-3830, DOI: https://doi.org/10.1515/hf-2016-0188.

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