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Transparent UV-cured clay/UV-based nanocomposite coatings on wood substrates: surface roughness and effect of relative humidity on optical properties

Abstract

The esthetic durability of coatings on wood surfaces of components constituting wood furniture used in bathrooms is generally affected by high humidity. In this study, surfaces of yellow birch wood (Betula alleghaniensis Britton) were protected with three different types of transparent UV-cured multilayer coatings (MCs), namely MC1, MC2, and MC3. Each MC consisted of three layers: primer, sealer, and topcoat. MC1, MC2, and MC3 contained, respectively, 0, 1, and 3 wt% of nanoclay (NC) in the topcoat, while no nanoparticle was added in the primer and sealer. The surface roughness of coated wood surfaces was measured before accelerated aging and optical properties (color and gloss) were investigated before, during, and after accelerated aging. Statistical results have shown that: (1) all coated wood samples have a similar surface roughness and (2) NC in the topcoat does not have a significant effect on initial color, whereas its effect on initial gloss is significant. There is a significant effect on relative humidity (RH) on color changes, but not between the different types of MCs. With respect to gloss, a lowering of gloss retention with the increase in aging time and RH has been observed for all coatings on wood surfaces. Significant differences appear only at high RH between: MC1 vs MC3 and MC2 vs MC3.

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References

  1. 1.

    Panshin, AJ, deZeeuw, C, “Introduction.” In: McGraw-Hill (ed.) Textbook of Wood Technology: Structure, Identification, Properties and Uses of the Commercial Woods of United States and Canada, pp. 1–7. McGraw-Hill, New-York (1980)

  2. 2.

    Winandy, JE, “Wood Properties.” In: Arntzen, CJ (ed.) Encyclopedia of Agricultural Science, pp. 549–561. Academic Press, Orlando (1994)

  3. 3.

    Panshin, AJ, deZeeuw, C, “The Woody Cell Wall.” In: McGraw-Hill (ed.) Textbook of Wood Technology: Structure, Identification, Properties and Uses of the Commercial Woods of United States and Canada, pp. 85–124. McGraw-Hill, New-York (1980)

  4. 4.

    Stevanovic, T, Perrin, D, “Formation et structure du bois.” In: Romandes, PPeU (ed.) Chimie du bois, pp. 47–67. Press Polytechniques et Universitaires Romandes, Lausanne, Suisse (2009)

  5. 5.

    Rowell, RM, “Moisture Properties.” In: Rowell, RM (ed.) Handbook of Wood Chemistry and Wood Composites, pp. 77–98. CRC Press, Boca Raton (2005)

    Google Scholar 

  6. 6.

    Williams, RS, “Weathering of Wood.” In: Rowell, RM (ed.) Handbook of Wood Chemistry and Wood Composites, pp. 139–185. CRC Press, Boca Raton (2005)

    Google Scholar 

  7. 7.

    Chandra, R, Soni, RK, “Recent Developments in Thermally Curable and Photocurable Systems.” Prog. Polym. Sci., 19 137–169 (1994)

    Article  Google Scholar 

  8. 8.

    Young, RJ, Lovell, PA, “Concepts and Nomenclature.” In: Press, C (ed.) Introduction to Polymers, pp. 3–14. CRC Press, Boca Raton (2011)

    Google Scholar 

  9. 9.

    Veigel, S, Grüll, G, Pinkl, S, Obersriebnig, M, Müller, U, Gindl-Altmutter, W, “Improving the Mechanical Resistance of Waterborne Wood Coatings by Adding Cellulose Nanofibres.” React. Funct. Polym., 85 214–220 (2014)

    Article  Google Scholar 

  10. 10.

    Vardanyan, V, Galstian, T, Riedl, B, “Effect of Addition of Cellulose Nanocrystals to Wood Coatings on Color Changes and Surface Roughness due to Accelerated Weathering.” J. Coat. Technol. Res., 12 247–258 (2015)

    Article  Google Scholar 

  11. 11.

    Sow, C, Riedl, B, Blanchet, P, “UV-Waterborne Polyurethane-Acrylate Nanocomposite Coatings Containing Alumina and Silica Nanoparticles for Wood: Mechanical, Optical, And Thermal Properties Assessment.” J. Coat. Technol. Res., 8 211–221 (2011)

    Article  Google Scholar 

  12. 12.

    Nicolas, A, Bernard, R, Vincent, B, Pierre, B, “Improvement of Photoprotection of Wood Coatings by Using Inorganic Nanoparticles as Ultraviolet Absorbers.” For. Prod. J., 61 20–27 (2011)

    Google Scholar 

  13. 13.

    Bongiovanni, R, Montefusco, F, Priola, A, Macchioni, N, Lazzeri, S, Sozzi, L, Ameduri, B, “High Performance UV-Cured Coatings for Wood Protection.” Prog. Org. Coat., 45 359–363 (2002)

    Article  Google Scholar 

  14. 14.

    Lee, BH, Choi, JH, Kim, HJ, Kim, JI, Park, JY, “Properties of UV-Curable Coatings for Wood Floorings as a Function of UV Dose.” J. Ind. Eng. Chem., 10 608–613 (2004)

    Google Scholar 

  15. 15.

    Decker, C, “High-Performance UV-Cured Acrylic Coatings.” In: American Chemical Society (ed.) New Developments in Coatings Technology, pp. 176–189. American Chemical Society, Providence (2007)

    Chapter  Google Scholar 

  16. 16.

    Schwalm, R, “Introduction to Coatings Technology.” In: Elsevier (ed.) UV Coatings: Basic, Recent Developments and New Applications, pp. 1–18. Elsevier, Amsterdam (2007)

  17. 17.

    Gustafsson, L, Börjesson, P, “Life Cycle Assessment in Green Chemistry: A Comparison of Various Industrial Wood Surface Coatings.” Int. J. Life Cycle Assess., 12 151–159 (2007)

    Google Scholar 

  18. 18.

    Mathiazhagan, A, Rani, J, “Nanotechnology—A New Prospective in Organic Coating-Review.” Int. J. Chem. Eng. Appl., 2 225–237 (2011)

    Google Scholar 

  19. 19.

    Zhou, SX, Wu, LM, “Development of Nanotechnology-Based Organic Coatings.” Compos. Interfaces, 16 281–292 (2009)

    Article  Google Scholar 

  20. 20.

    Fernando, RH, “Nanocomposite and Nanostructured Coatings: Recent Advancements.” In: Fernando, RH, Sung, L-P (eds.) Nanotechnology Applications in Coatings, pp. 2–21. Am. Chem. Soc., Washington (2009)

    Chapter  Google Scholar 

  21. 21.

    Nkeuwa, WN, Riedl, B, Landry, V, “Wood Surfaces Protected with Transparent Multilayer UV-Cured Coatings Reinforced with Nanosilica and Nanoclay. Part I: Morphological Study and Effect of Relative Humidity on Adhesion Strength.” J. Coat. Technol. Res., 11 283–301 (2014)

    Article  Google Scholar 

  22. 22.

    Messersmith, PB, Giannelis, EP, “Synthesis and Characterization of Layered Silicate-Epoxy Nanocomposites.” Chem. Mater., 6 1719–1725 (1994)

    Article  Google Scholar 

  23. 23.

    Lan, T, Kaviratna, PD, Pinnavaia, TJ, “Mechanism of Clay Tactoid Exfoliation in Epoxy–Clay Nanocomposites.” Chem. Mater., 7 2144–2150 (1995)

    Article  Google Scholar 

  24. 24.

    Fornes, TD, Hunter, DL, Paul, DR, “Nylon-6 Nanocomposites from Alkylammonium-Modified Clay: The Role of Alkyl Tails on Exfoliation.” Macromolecules, 37 1793–1798 (2004)

    Article  Google Scholar 

  25. 25.

    Chen, CG, Tolle, TB, “Fully Exfoliated Layered Silicate Epoxy Nanocomposites.” J. Polym. Sci. Pt. B Polym. Phys., 42 3981–3986 (2004)

    Article  Google Scholar 

  26. 26.

    Hammond III, HK, Kigle-Boeckler, G, “Gloss.” In: Koleske, JV (ed.) Paint and Coating Testing Manual, pp. 470–480. ASTM, Philadelphia (1995)

  27. 27.

    Cristea, VM, Riedl, B, Blanchet, P, “Enhancing the Performance of Exterior Waterborne Coatings for Wood by Inorganic Nanosized UV Absorbers.” Prog. Org. Coat., 69 432–441 (2010)

    Article  Google Scholar 

  28. 28.

    Scrinzi, E, Rossi, S, Deflorian, F, Zanella, C, “Evaluation of Aesthetic Durability of Waterborne Polyurethane Coatings Applied on Wood for Interior Applications.” Prog. Org. Coat., 72 81–87 (2011)

    Article  Google Scholar 

  29. 29.

    Landry, V, Blanchet, P, Zotig, L, Martel, T, “Performance of Exterior Semitransparent PVDF–Acrylic Coatings.” J. Coat. Technol. Res., 10 37–46 (2013)

    Article  Google Scholar 

  30. 30.

    Scrinzi, E, Rossi, S, Deflorian, F, “Influence of Natural and Artificial Weathering on Aesthetic and Protective Properties of Organic Coatings.” Corros. Rev., 29 275–285 (2011)

    Article  Google Scholar 

  31. 31.

    Ozgenc, O, Hiziroglu, S, Yildiz, UC, “Weathering Properties of Wood Species Treated with Different Coating Applications.” BioResources, 7 4875–4888 (2012)

    Article  Google Scholar 

  32. 32.

    Nkeuwa, WN, Riedl, B, Landry, V, “UV-Cured Clay/Based Nanocomposite Topcoats for Wood Furniture. Part I: Morphological Study, Water Vapor Transmission Rate and Optical Clarity.” Prog. Org. Coat., 77 1–11 (2014)

    Article  Google Scholar 

  33. 33.

    Nkeuwa, WN, Riedl, B, Landry, V, “UV-Cured Clay/Based Nanocomposite Topcoats for Wood Furniture. Part II: Dynamic Viscoelastic Behavior and Effect of Relative Humidity on the Mechanical Properties.” Prog. Org. Coat., 77 12–23 (2014)

    Article  Google Scholar 

  34. 34.

    Nkeuwa, WN, Riedl, B, Landry, V, “Wood Surfaces Protected with Transparent Multilayer UV-Cured Coatings Reinforced with Nanosilica and Nanoclay. Part II: Application of a Standardized Test Method to Study the Effect of Relative Humidity on Scratch Resistance.” J. Coat. Technol. Res., 11 993–1011 (2014)

    Article  Google Scholar 

  35. 35.

    Wiedenhoeft, A, Miller, R, “Structure and Function of Wood.” In: Rowell, RM (ed.) Handbook of Wood Chemistry and Wood Composites, pp. 9–33. CRC Press, Boca Raton (2005)

    Google Scholar 

  36. 36.

    Wicks, ZW, Jones, FN, Pappas, SP, Wicks, DA, “Application Methods.” In: Wiley (ed.) Organic Coatings: Science and Technology, pp. 473–489. Wiley, Hoboken (2007)

  37. 37.

    Landry, V, Blanchet, P, Riedl, B, “Mechanical and Optical Properties of Clay-Based Nanocomposites Coatings for Wood Flooring.” Prog. Org. Coat., 67 381–388 (2010)

    Article  Google Scholar 

  38. 38.

    Zorll, U, “New Aspects of Gloss of Paint Film and Its Measurement.” Prog. Org. Coat., 1 113–155 (1972)

    Article  Google Scholar 

Download references

Acknowledgments

The authors would like to acknowledge the Conseil de recherches en sciences naturelles et en génie (CRSNG), ArboraNano, and NanoQuébec for their financial support, FPInnovations (secondary wood products manufacturing) for its collaboration with Université Laval, Département des sciences du bois et de la forêt as well as the technicians who greatly contributed to laboratory experiments.

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Correspondence to Bernard Riedl.

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Nkeuwa, W.N., Riedl, B. & Landry, V. Transparent UV-cured clay/UV-based nanocomposite coatings on wood substrates: surface roughness and effect of relative humidity on optical properties. J Coat Technol Res 14, 555–569 (2017). https://doi.org/10.1007/s11998-016-9873-6

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Keywords

  • Wood
  • UV coatings
  • Nanoparticles
  • Surface roughness
  • Optical properties
  • Relative humidity