caa a22 4500 463216644 CHVBK 20180405153158.0 cr unu---uuuuu 170326e20071001xx s 000 0 eng 10.1007/s00226-007-0129-6 doi (NATIONALLICENCE)springer-10.1007/s00226-007-0129-6 Investigation of the effects of bark fiber as core material and its resin content on three-layer MDF performance by response surface methodology [Elektronische Daten] [Cheng Xing, S. Zhang, James Deng, Siqun Wang] The effects of using 100% black spruce (Picea mariana) bark fibers as core layer material accounting for up to 70% of the board and its resin content (between 6 and 10%) on the properties of three-layer medium-density fiberboard (MDF) were investigated using a full factorial experimental design with two independent variables and three levels. Five response variables, namely internal bond strength, modulus of rupture, modulus of elasticity, thickness swelling and water absorption were statistically analyzed using a response surface methodology and two-way analysis of variance. The effects of the proportion of core layer (bark fibers) and its resin content on panel properties were significant. All properties studied were positively affected by increasing core layer resin content. The effects of the proportion of core layer (bark fibers) on mechanical properties and water absorption were negative, but positive on thickness swelling. Simultaneous optimization of panel properties indicated that at a density of 850kg/m3, a three-layer MDF with a core layer resin content of 6.5%, a face resin content of 12 and 60% of core layer proportion (spruce bark fibers) would satisfy the minimum requirements of ANSI standard for 130-grade MDF. Overall, black spruce bark, a major residue source in the Eastern Canada, should be considered as a supplemental furnish for the core layer materials of a three-layer MDF. Springer-Verlag, 2007 Xing Cheng Tennessee Forest Products Center, University of Tennessee, 2506 Jacob Dr., 37996-4570, Knoxville, TN, USA aut Zhang S. Forintek Canada Corp., 319 rue Franquet, G1P 4R4, Quebec City, QC, Canada aut Deng James Forintek Canada Corp., 319 rue Franquet, G1P 4R4, Quebec City, QC, Canada aut Wang Siqun Tennessee Forest Products Center, University of Tennessee, 2506 Jacob Dr., 37996-4570, Knoxville, TN, USA aut Wood Science and Technology Springer-Verlag 41/7(2007-10-01), 585-595 0043-7719 41:7<585 2007 41 226 https://doi.org/10.1007/s00226-007-0129-6 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s00226-007-0129-6 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Xing Cheng Tennessee Forest Products Center, University of Tennessee, 2506 Jacob Dr., 37996-4570, Knoxville, TN, USA aut NATIONALLICENCE 700 1- Zhang S. Forintek Canada Corp., 319 rue Franquet, G1P 4R4, Quebec City, QC, Canada aut NATIONALLICENCE 700 1- Deng James Forintek Canada Corp., 319 rue Franquet, G1P 4R4, Quebec City, QC, Canada aut NATIONALLICENCE 700 1- Wang Siqun Tennessee Forest Products Center, University of Tennessee, 2506 Jacob Dr., 37996-4570, Knoxville, TN, USA aut NATIONALLICENCE 773 0- Wood Science and Technology Springer-Verlag 41/7(2007-10-01), 585-595 0043-7719 41:7<585 2007 41 226 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer