Macromolecular Research

The Polymer Society of Korea (한국고분자학회)
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Effect of Polyisocyanate Hardener on Waterborne Polyurethane Adhesive Containing Different Amounts of Ionic Groups

  • Published : 2006.12.31
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Abstract

Waterborne polyurethane (WBPU) adhesive with varying amounts of dimethylol propionic acid (DMPA) was synthesized by prepolymer process and blended with polyisocyanate hardener. The mean particle size of the WBPU dispersion decreased with increasing DMPA content. $^1H$ NMR spectroscopy confirmed the formation of allophanate bonds and biuret bonds due to the reaction of hardener NCO with urethane/urea groups. The optimum NCO content with the greatest adhesive strength was dependent on the total content of urethane/urea groups in the WBPU molecules. The optimum NCO content increased with increasing number of urethane groups (DMPA content). The adhesion strength of WBPU adhesives was maximized at a molar ratio of hardener NCO to urethane/urea of about 0.28.

Keywords

References

  1. P. H. Markusch and R. E. Tirpak, Water-Borne and Higher- Solids Coating Symposium, New Orleans, LA, 1990
  2. B. Y. Kim and T. K. Kim, J. Appl. Polym. Sci., 43, 393 (1991) https://doi.org/10.1002/app.1991.070430218
  3. C. K. Kim and B. K. Kim, J. Appl. Polym. Sci., 43, 2295 (1991) https://doi.org/10.1002/app.1991.070431219
  4. W. C. Chan and S. A. Chen, Polymer, 43, 1265 (1993)
  5. M. Dreja, B. Heine, B. Tieke, and G. Junkers, J. Colloid Interface Sci., 181, 131(1997)
  6. Z. W. Wicks, D. A. Wicks, and J. W. Rosthauser, Prog. Org. Coat., 44, 161 (2002) https://doi.org/10.1016/S0300-9440(02)00002-4
  7. G. A. Howarth, Surf. Coat. Int., Part B: Coat. Trans., 86, 11 (2003)
  8. M. S. Sanchez-Adsuar, M. M. Pastor-Blas, R. Torregrosa-Macia, and J. M. Martin-Martinez, Int. J. Adhes. Adhes., 14, 193 (1994) https://doi.org/10.1016/0143-7496(94)90030-2
  9. M. S. Sanchez-Adsuar and J. M. Martin-Martinez, J. Adhes. Sci .Technol., 11, 1077 (1997) https://doi.org/10.1163/156856197X00994
  10. F. Aran-Ais, A. M. Torro-Palau, A. C. Orgiles-Barcelo, T. P. Ferrandiz-Gomez, and J. M. Martin-Martinez, in Symposium on adhesives: synthesis, characterization and applications, Newark, NJ, 2000, p. 3
  11. F. Aran-Ais, A. M. Torro-Palau, A. C. Orgiles-Barcelo, and J. M. Martin-Martinez, J. Adhes. Sci. Technol., 14, 1557 (2000) https://doi.org/10.1163/156856100742375
  12. M. S. Sanchez-Adsuar, M. M. Pastor-Blas, and J. M. Martin-Martinez, J. Adhesion, 67, 327 (1998) https://doi.org/10.1080/00218469808011115
  13. J. Blackwell, M. R. Nagarajan, and T. B. Hoitink, Polymer, 23, 950 (1982) https://doi.org/10.1016/0032-3861(82)90392-5
  14. K. Nakamae, T. Nishino, S. Asoka, and Sudaryanto, Int. J. Adhes. Adhes., 19, 345 (1999) https://doi.org/10.1016/S0143-7496(98)00049-9
  15. M. S. Sanchez-Adsuar and J. M. Martin-Martinez, J. Adhes., 68, 143 (1998) https://doi.org/10.1080/00218469808029583
  16. K. Nakamae, T. Nishino, S. Asoka, and Sudaryanto, Int. J. Adhes. Adhes., 16, 233 (1996) https://doi.org/10.1016/S0143-7496(96)00009-7
  17. B. S. Kim and B. K. Kim, J. Appl. Polym. Sci., 97, 1961 (2005) https://doi.org/10.1002/app.21984
  18. J. E. Yang, Y. H. Lee, Y. S. Koo, Y. J. Jung, and H. D. Kim, Fiber. Polym., 3, 97 (2002) https://doi.org/10.1007/BF02892624
  19. M. M. Rahman and H. D. Kim, J. Appl. Polym. Sci., 102, 5684 (2006) https://doi.org/10.1002/app.25052
  20. J. Y. Kwon and H. D. Kim, Macromol. Rres., 14, 373 (2006) https://doi.org/10.1007/BF03219097
  21. Y. S. Kwak, E. Y. Kim, B. H. Yoo, and H. D. Kim, J. Appl. Polym. Sci., 94, 1743 (2004) https://doi.org/10.1002/app.21099
  22. T. L. Wang and T. H. Hsieh, Polym. Degrad. Stabil., 55, 95 (1997) https://doi.org/10.1016/S0141-3910(96)00130-9