Journal of Pure and Applied MicrobiologyVol. 9 No. 3

Bonding Strength Characteristics of Antibacterial PF/Wood Bioboard from Vitex negundo

Rui-Lin He, Zi-Xiang Chen, Qing-Qing Zhao and Zhong-Feng Zhang*

Central South University of Forestry and Technology, Changsha - 410004, China.

Received on 09 May 2015 and accepted on 03 July 2015

 

ABSTRACT

The effect of phenolic resin impregnation on the internal bonding strength of small-diameter Vitex negundo reconstituted timber was explored. Functional group and internal microscopic structure changes caused by phenolic resin impregnation were also investigated. The adhesion of the impregnated board improved remarkably compared with that of the plain board; the internal bonding strength increased by 70.36%. Infrared spectra of the impregnated board showed a more intense C-O-C stretching vibration at 1047 cm”1 than the plain board. C-O-C groups may have formed during the impregnation process, which helped to increase intermolecular forces and improve the adhesion of the impregnated board. Scanning electron microscopy demonstrated that the internal microscopic structure of the impregnated board differed from that of the plain board.

Keywords : Antibacterial bioboard; treatment Vitex negundo; Bonding strength; Dipping treatment; Phenolic resin.