Effect of Resin Molecular Weight on Bonding Flakeboard

Authors

  • R. Scott Stephens
  • Norman P. Kutscha

Keywords:

Molecular weight, phenolic resin, diafiltration, wood adhesive, flakeboard

Abstract

Information on the effect of resin molecular weight on flakeboard properties is limited. A commercial phenol formaldehyde flakeboard resin was separated into two molecular weight fractions by diafiltration. Aspen flakeboards were prepared with the different resin fractions. Penetration characteristics of the different fractions were determined microscopically. Results indicate that both low and high molecular weight components of the resin are needed to achieve optimum board properties.

References

Gollob, L., R. L. Krahmer, J. D. Wellons, and A. W. Christianson. 1985. Relationship between chemical characteristics of phenol-formaldehyde resins and adhesive performance. Forest Prod. J. 35(3):42-48.nNearn, W. 1974. Applications of the ultrastructure concept in industrial wood products research. Wood Science 6(3):285-293.nPeterson, M. D. 1985. Wood Adhesives in 1985: Status and Needs. USDA Forest Products Laboratory, May 14-16, 1985. Madison, WI.nSteiner, P. R. 1985. Wood Adhesives in 1985: Status and Needs. USDA Forest Products Laboratory, May 14-16, 1985. Madison, WI.nWilson, J. B., G. L. Jay, and R. L. Krahmer. 1979. Using resin properties to predict wood strength of oak particleboard. Adhesives Age 22(6):26-30.n

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Published

2007-06-22

Issue

Number 4 / October 1987

Section

Research Contributions

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