Application of The Lifshitz-van Der Waals Acid-base Approach To Determine Wood Surface Tension Components

Authors

  • Douglas J. Gardner

Keywords:

Wood, surface tension, contact angle, Lifshitz-van der Waals/acid-base, pH

Abstract

Improvements are being made in the fundamental descriptions of surface thermodynamics, and it is important to apply these new concepts to wood. The purpose of this paper is to determine wood surface tension components using the Lifshitz-van der Waals/acid-base approach. Zisman plot, geometric-mean, and harmonic-mean wood surface tension determinations are also made for comparative purposes. Lifshitz-van der Waal forces appear to account for the majority of wood surface tension, and the acid-base character comes primarily from the electron donating γ-sites. The contribution of γ-sites on the wood surface to fundamental wood-adhesive interactions may have considerable implications in the gluing and finishing technology of wood, and it deserves further study. The Lifshitz-van der Waals/acid-base approach provides for greater accuracy in calculating wood surface tension components than the geometric-mean and harmonic-mean equations because it is based on the contribution of contact angles from five liquids versus two liquids. In some instances, the critical surface tension of wood obtained using Zisman plots compares favorably with the total surface tension obtained by the Lifshitz-van der Waals/acid-base approach.

References

Cahn. 1991. Cahn Dca Applications Software. ATI Analytical Technology Inc., Madison, WI.nDorris, G. M., and D. G. Gray. 1978. The surface analysis of paper and wood fibers by ESCA (Electron Spectroscopy for Chemical Analysis). I. Application to cellulose and lignin. Cellulose Chem. Technol. 12:9-23.nEtzler, F. M., and J. J. Conners. 1995. The surface chemistry of paper: Its relationship to printability and other paper technologies. In T. E. Conners and S. Banergee, eds. Surface analysis of paper. CRC Press, Boca Raton, FL.nFowkes, F. M. 1972. Donor-acceptor interactions at interfaces. J. Adhesion 4:155-159.nGardner, D. J., N. C. Generalla, D. W. Gunnells, and M. P. Wolcott. 1991. Dynamic wettability of wood. Langmuir 7(11):2498-2502.nGardner, D. J., M. P. Wolcott, L. Wilson, Y. Huang, and M. Carpenter. 1996. Our understanding of wood chemistry in 1995. Pages 29-36 in Proc. No. 7296 1995 Wood Adhesive Symposium, Forest Products Society.nGirifalco, L. A., and R. J. Good. 1957. A theory for the estimation of surface and interfacial energies. I. Derivation and application to interfacial tension. J. Phys. Chem. 61:904.nGunnells, D. W. 1992. Utilizing DCA analysis to investigate the effects of environmental conditions on the surface of wood. Master's thesis, West Virginia University, Morgantown, WV.nHanley, S. J., and D. G. Gray. 1994. Atomic force microscope images of black spruce wood sections and pulp fibers. Holzforschung 48:29-34.nKamdem, D. P., S. K. Bose, and P. Luner. 1993. Inverse gas chromatography characterization of birch wood meal. Langmuir 9(11):3039-3044.nLiptakova, E., and J. Kudela. 1994. Analysis of the wood-wetting process. Holzforschung 48:139-144.nLiu, F. P., D. J. Gardner, and M. P. Wolcott. 1995. A model for the description of polymer surface dynamic behavior. I. Contact angle vs. polymer surface properties. Langmuir 11(7):2674-2681.nMarch, J. 1977. Advanced organic chemistry reactions, mechanisms, and structure. 2nd ed. McGraw Hill Book Co., New York, NY. P. 238.nMoore, W. E., and D. B. Johnson. 1985. Procedures for chemical analysis of wood and wood products. USDA Forest Serv. Forest Prod. Lab., Madison, WI.nNguyen, T., and W.E. Johns. 1978. Polar and dispersion force contributions to the total surface free energy of wood. Wood Sci. Technol. 12:63-74.nRowe, J.W., and A.H. Conner. 1979. Extractives in eastern hardwoods—A review. USDA Forest Serv. Gen. Tech. Rep. FPL-18. USDA Forest Prod. Lab., Madison, WI.nVan Oss, C. J., M. K. Chaudhury, and R. J. Good. 1987. Monopolar surfaces. Adv. Colloid Interface Sci. 28:35-64.nVan Oss, C. J., M. K. Chaudhury, and R. J. Good. 1988. Interfacial Lifshitz-van der Waals and polar interactions in macroscopic systems. Chem. Rev. 88:927-941.nWu, S. 1971. Calculation of interfacial tension in polymer systems. J. Polymer Sci. Part C 34:19-30.nWu, W., R. F. Giese Jr., and C. J. van Oss. 1995. Evaluation of the Lifshitz-van der Waals/acid-base approach to determine surface tension components. Langmuir 11(1):379-382.nZisman, W. A. 1964. Relation to equilibrium contact angle to liquid and solid constitution. Pages 1-51 in F. W. Fowkes, ed. American Chemical Society Adv. in Chem. 43:1-51.nZisman, W. A. 1977. Influence of constitution on adhesion. Pages 33-66 in Irving Skeist, ed. Handbook of adhesives, 2nd ed. Van Nostrand Reinhold Co., New York, NY.n

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Published

2007-06-19

Issue

Number 4 / October 1996

Section

Research Contributions

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