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Evaluation of Integrated Anaerobic Digestion and Hydrothermal Carbonization for Bioenergy Production
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Wood hydrolysate barriers: performance controlled via selective recovery
Anas Ibn Yaich1, Ulrica Edlund, Ann-Christine Albertsson
1Fiber and Polymer Technology, Royal Institute of Technology, KTH, SE-100 44 Stockholm, Sweden.
Biomacromolecules
|December 21, 2011
Summary
Developing films from wood hydrolysate (WH) showed improved oxygen barrier properties. The least processed wood hydrolysate fractions yielded the best performing films, outperforming purified hemicellulose films.
Area of Science:
- Materials Science
- Polymer Science
- Biotechnology
Background:
- Wood hydrolysate (WH) is a byproduct of wood processing.
- Noncellulosic polysaccharides in WH can be utilized for material development.
- Optimizing WH upgrading is key to enhancing material properties.
Purpose of the Study:
- To produce films and coatings from wood hydrolysate (WH).
- To investigate the impact of different upgrading conditions on WH properties.
- To evaluate the oxygen barrier performance of WH-based films.
Main Methods:
- Hydrothermal treatment of hardwood to obtain WH.
- Three alternative upgrading treatments applied to WH.
- Characterization of WH fractions' structure and composition.
- Fabrication and testing of WH-based films for tensile and oxygen barrier properties.
Main Results:
- Upgrading conditions significantly altered WH fraction structure, composition, and properties.
- The least upgraded WH fraction produced films with superior oxygen barrier performance.
- WH-based films outperformed those made from highly purified hemicellulose.
Conclusions:
- Selective upgrading of wood hydrolysate enables tailored film properties.
- Crude WH fractions offer a promising route for high-performance oxygen barrier materials.
- This approach provides a sustainable alternative to conventional barrier materials.
