Investigation of physical, mechanical properties and formaldehyde emission of medium density fiberboard manufactured from urea formaldehyde resin reinforced with nanocrystalline cellulose

Document Type : Research Paper

Authors

1 Ph.D. student, Department of wood and paper science and technology, Natural resources faculty, Tarbiat Modares university, Noor, Iran

2 Associate Prof., Department of wood and paper science and technology, Natural resources faculty, Tarbiat Modares university, Noor, Iran

3 Assistant Prof., Department of environmental science, Natural resources faculty, Tarbiat Modares university, Noor, Iran

4 Professor, Department of material sciences and process engineering, University of natural resources and life sciences vienna (BOKU), Konrad-Lorenz-Straße 24, 3430 Tulln, Austria

Abstract

The purpose of this study was to evaluate the physico-mechanical properties and formaldehyde emission of medium density fiberboard (MDF) made from modified urea formaldehyde resin. In this study, nanocrystalline cellulose (NCC) (0, 0.5, 1, 1.5 and 2 percent) based on the dry weight of resin was applied to modify urea formaldehyde resin. The results of mechanical properties indicated that MOR and IB of the MDF panels significantly increased as the NCC incorporated into the UF adhesive up to 1%wt. However, further increment in the NCC content (1.5 and 2 wt%) decreased the MOR and IB of the panels. Water absorption and thickness swelling after 2 h were significantly increased when the NCC content increased from 1% to 2%, but no significant differences were observed between the panels after 24 h. Also, the formaldehyde emission significantly decreased with increasing the amount of nanocrystalline cellulose.

Keywords

References

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Iranian Journal of Wood and Paper Industries
Volume 8, Issue 2
September 2017
Pages 197-209

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