Journal
ANNALS OF FOREST SCIENCE
Volume 72, Issue 1, Pages 27-32Publisher
SPRINGER FRANCE
DOI: 10.1007/s13595-014-0392-2
Keywords
Tannins; Wood adhesives; Cellulose nanofibers; Environmentally friendly; Mechanical strength
Categories
Funding
- Jiangsu Planned Projects for Postdoctoral Research Funds [1302042B]
- Cooperative Innovation Fund of Jiangsu Province [BY2013006-02]
- National High Technology Research and Development Program of China (863 Program) [2012AA03A204]
- Forestry Industry Research Special Funds for Public Welfare Projects [201104042]
- Priority Academic Program Development of Jiangsu Higher Education Institutions (PAPD)
- CPER Structuration du Pole de Competitivite Fibres Grand'Est
- French National Research Agency through the Laboratory of Excellence ARBRE [ANR-12-LABXARBRE-01]
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Condensed tannins have been successfully used as substitutes for phenol in the production of resins for wood products. However, the enhancement of the properties of tannin-based resins with nontoxic and cost effective additives is of great interest. In the present work, the performance enhancement of tannin-based particleboards with cellulose nanofibers was investigated. In presence of 2 % of cellulose nanofibers, the viscosity of tannin-based adhesives and the internal bonding strength (IB) of the corresponding particleboards were increased from 350 to 5,462 mPa center dot s and from 0.85 to 0.98 MPa respectively. The modulus of elastic (MOE) and modulus of rupture (MOR) of the resins were also notably increased while thickness swelling (TS) of the panels was not affected. The addition of cellulose nanofibers to tannin adhesives is an effective method for the production of high performance particleboards. Tannin-based adhesive containing 2 % of cellulose nanofibers exhibits the best mechanical strength. The addition of cellulose nanofibers into tannin-based adhesives notably enhanced the mechanical properties of the wood particleboards produced. The formulation containing 2 % (w/w) of cellulose nanofibers exhibited the best mechanical strength.
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