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Related Experiment Video

Updated: Jun 10, 2026

Towards Biomimicking Wood: Fabricated Free-standing Films of Nanocellulose, Lignin, and a Synthetic Polycation

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Published on: June 17, 2014

Barrier films from renewable forestry waste.

Ulrica Edlund¹, Yingzhi Zhu Ryberg, Ann-Christine Albertsson

¹Fibre and Polymer Technology, Royal Institute of Technology, SE-100 44 Stockholm, Sweden.

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|August 5, 2010

Summary

Researchers developed biobased films and coatings from wood waste, achieving low oxygen permeability for sustainable packaging. This innovation adds value to industrial wood processing by utilizing wastewater components.

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Area of Science:

Materials Science
Biotechnology
Sustainable Chemistry

Background:

Industrial wood processing generates wastewater containing valuable wood components.
Valorizing wood hydrolysate is key to sustainable industrial practices.
Developing novel biobased materials from waste streams is an ongoing challenge.

Purpose of the Study:

To design and characterize biobased free-standing films and coatings from wood hydrolysate.
To achieve low oxygen permeability for potential packaging applications.
To add value to wood converting industrial processes through waste stream utilization.

Main Methods:

Recovery and formulation of noncellulosic fractions from spruce wood hydrothermal treatment wastewater.
Preparation of free-standing films and coatings on PET substrates.
Characterization of films and coatings for oxygen permeability, mechanical properties, and water vapor transmission.

Main Results:

Oligo- and polysaccharide-rich fractions were successfully isolated and utilized.
Smooth, transparent films and coatings were prepared with varying concentrations.
Achieved very low oxygen permeabilities (below 1 cm³ μm m⁻² day⁻¹ kPa⁻¹).

Conclusions:

The developed biobased films and coatings exhibit promising properties for renewable packaging.
This approach effectively valorizes wood processing wastewater.
The materials offer a sustainable alternative to conventional packaging solutions.