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One-step preparation of bilayered films from kraft lignin and cellulose acetate to mimic tree bark

  • This contribution presents the development of a dry-cast method for the one-step preparation of bio-based films from wood polymers that mimic the bilayered structure of tree bark, the natural protective layer of the tree. In a simplified view, natural bark can be considered as the superposition of an external homogeneous and non-porous layer (outer bark) and a porous substructure layer (inner bark). This work is a first step for the future development of bio-based biomimetic wood coatings. The film had a bark-like appearance and its total density, bulk density and porosity were similar to values measured in natural bark. Furthermore, the structural characteristics of the studied film, namely specific surface area (BET) and pore size distribution, as well as the performance of the water adsorption ability were investigated and discussed.

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Author:Stéphan Barbe, Moriz Berger, Roxanne Engstler, Andrés Dieste, Leonardo Clavijo, Evangelos Favvas, Andreas Sapalidis
Parent Title (English):European Journal of Wood and Wood Products
Publisher:Springer Berlin Heidelberg
Document Type:Article
Date of first Publication:2020/07/01
Date of Publication (online):2023/04/25
Tag:Ceramics, Glass, Composites, Natural Materials; Manufacturing, Machines, Tools, Processes; Wood Science & Technology
Page Number:4
Institutes:Angewandte Naturwissenschaften (F11)
Dewey Decimal Classification:500 Naturwissenschaften und Mathematik
Open Access:Open Access
Licence (German):License LogoCreative Commons - CC BY - Namensnennung 4.0 International