Determination the optimal conditions of chemical modification on Poplar wood with Glutaraldehyde and physical properties of products

Esmaeeli, Neda; Ghorbani, Maryam; Biparva, Pourya

doi:10.22092/ijwpr.2016.105616

Document Type : Research Paper

Authors

¹ University of Agricultural Sciences and Natural Resources

² Associate Prof. Department of Wood and Paper Sciences and Technology, Sari University of Agricultural Sciences and Natural Resources, Sari, Iran

³ Department of Sciences, Sari University of Agricultural Sciences and Natural Resources

https://doi.org/10.22092/ijwpr.2016.105616

Abstract

This research was conducted to determine the optimal conditions for chemical modification of poplar wood with glutaraldehyde and its effect on the physical properties of products. Test samples were prepared according to the standard ASTM-D1037 and impregnated in the laboratory cylinders with Glutaraldehyde at a concentration of 10% by using vacuum-pressure method. Modification reaction was done in two procedure. Heating first in the laboratory cylinder (Hydrothermal) for 4 hour and second in oven for 4 level 4,12,24,48 and 48hours. Weight percent gain of modified by hydrothermal and oven method was measured 2.10, 9.26, 10.02, 11.40 and 14.15% respectively. Chemical modification with glutaraldehyde by hydroxyl group's substitution, reduced the uptake of water and swelling of poplar wood. So that at the end of soaking in water the heating in the oven for 48 hours with minimum water absorption and dimensional changes in the 57.32 and 12.08 respectively, and highest bulking, ASE and ASE′ in 8.31,67 and 35.51% respectively was selected as the optimal level. This improvement compared to other modification levels demonstrates the forming of permanent Cross-linking of acetal that increased by Prolongation of the heating time.

Keywords

Main Subjects

Biology and Wood Protection

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Iranian Journal of Wood and Paper Science Research

Determination the optimal conditions of chemical modification on Poplar wood with Glutaraldehyde and physical properties of products

References

References

Volume 31, Summer 2 - Serial Number 55
May 2016
Pages 211-223

Determination the optimal conditions of chemical modification on Poplar wood with Glutaraldehyde and physical properties of products

References

References

Volume 31, Summer 2 - Serial Number 55May 2016Pages 211-223

Volume 31, Summer 2 - Serial Number 55
May 2016
Pages 211-223