Effects of Acid Rain on Coatings for Exterior Wooden Panels

Byoung-Hoo Lee; Hyun-Joong Kim; Jun-Jae Lee; Moon Jae Park

Journal of Industrial and Engineering Chemistry, Vol.9, No.5, 500-507, September, 2003

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Effects of Acid Rain on Coatings for Exterior Wooden Panels

Byoung-Hoo Lee, Hyun-Joong Kim^†, Jun-Jae Lee¹, and Moon Jae Park²

Lab. of Adhesion & Bio-Composites, Dept. of Forest Products, Seoul National University, Seoul 151-742, Korea
¹Lab. of Timber Engineering, Dept. of Forest Products, Seoul National University, Seoul 151-742, Korea
²Dept. of Forest Products, Korea Forest Research Institute, Seoul 130-712, Korea

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This study examined the effects of artificial acid rain on the color change, the gloss and the morphology of several kinds of coatings used for exterior wood construction panels. The lightness, redness, yellowness and color difference of the coated panels changed with the treatment of artificial acid rain. In particular, a much more pronounced degradation in water-bome natural paint was observed than in the other types of coating as the treatment time increased, due to acid hydrolysis of the water-borne paint. The color change in the coated panel might be associated with the presence of chromophores and auxochromes. The gloss of the semitransparent penetrating oil-base stains (light brown) and natural varnish significantly decreased with increasing artificial acid rain treatment. SEM images and CLSM images showed increasing degradation of the coated surface with increasing treatment time of artificial acid rain.

Keywords:weathering;acid rain;exterior coating;confocal laser scanning microscopy

[References]

Kim SJ, Park HS, Lee KC, Kim SK, Park EK, J. Ind. Eng. Chem., 3(1), 63 (1997)
Park HS, Wu JP, Kim HK, J. Ind. Eng. Chem., 3(4), 282 (1997)
Park HS, Park EK, Kim SK, Shin PW, J. Ind. Eng. Chem., 5(1), 59 (1999)
Kyllo KE, Ladisch CM, ACS Symposium Series, Materials Degradation Caused by Acid Rain, Robert Baboian Ed., p. 343, American Chemical Society, Washington, D.C. (1986)
Lee BK, Hong SH, Lee DS, Atmospheric Environ., 34, 563 (2000)
Williams RS, ACS Symposium Series, Materials Degradation Caused by Acid Rain, Robert Baboian Ed., pp. 310-331, American Chemical Society, Washington, D.C. (1986)
Schulz U, Trubiroha P, Shernau U, Baumgart H, Prog. Org. Coat., 40, 151 (2000)
Cassens DL, Feist WC, Johnson BR, Groot RCD, Selection and Use of Preservative-Treated Wood, pp. 85-87, Forest Products Society, Madison, WI (1995)
Williams RS, Knaebe M, J. Coat. Technol., 72, 43 (2000)
McDonald KA, Falk RH, Williams RS, Winandy JE, Wood Decks, pp. 61-75, Forest Products Society, Madison, WI (1996)
Grelier S, Castellan A, Kamdem DP, Wood Fiber Sci., 32(2), 199 (2000)
Hunter RS, The Measurement of Appearance, Academic Press, New York (1987)
Sheppard CJR, Shotton DM, Confocal Laser Scanning Microscopy, pp. 1-106, BIOS Scientific Publishers, New York (1997)
Bio-Rad Microscience Ltd., MRC-1204 Laser Scanning Confocal Imaging System Operating Manual, Issue 2.0 (1996)
Meijer MD, Militz H, Holzforschung, 53, 553 (1999)
Mori K, Tachi K, Muramatsu M, Torita K, Proceedings of the XXIV FATIPEC Congress, Vol. A, p. 101 (1998)
Stevani CV, Faria DLAD, Porto JS, Trindade DJ, Bechara EJH, Bechara EJH, Polym. Degrad. Stabil., 68, 64 (2000)
Schnabel W, Polymer Degradation, p. 179, Hanser International, New York (1981)
Turner GPA, Introduction to Paint Chemistry and Principles of Paint Technology, 3rd edn., pp. 77-78, Chapman and Hall, New York (1988)
Feist WC, Forest Prod. J., 37, 15 (1987)
Williams RS, Feist WC, J. Coat. Technol., 66, 109 (1994)
Gabriele PD, Geib JR, Iannucci RM, Reid WJ, The Effects of Hostile Environments on Coatings and Plastics, D.P. Garner, and G.A. Stahl Eds., p. 317, American Chemical Society, Washington, D.C. (1983)
Schrof W, Beck E, Etzrodt G, Hintze-Brning H, Meisenburg U, Schwalm R, Warming J, Prog. Org. Coat., 43, 1 (2001)
Bhawalkar JD, Swiatkiewicz J, Prasad PN, Pan SJ, Shih A, Samarabandu JK, Cheng PC, Reinhardt BA, Polymer, 38(17), 4551 (1997)

[Referenced By]

[1] Kim SJ, Park HS, Lee KC, Kim SK, Park EK, J. Ind. Eng. Chem., 3(1), 63 (1997)

[2] Park HS, Wu JP, Kim HK, J. Ind. Eng. Chem., 3(4), 282 (1997)

[3] Park HS, Park EK, Kim SK, Shin PW, J. Ind. Eng. Chem., 5(1), 59 (1999)

[4] Kyllo KE, Ladisch CM, ACS Symposium Series, Materials Degradation Caused by Acid Rain, Robert Baboian Ed., p. 343, American Chemical Society, Washington, D.C. (1986)

[5] Lee BK, Hong SH, Lee DS, Atmospheric Environ., 34, 563 (2000)

[6] Williams RS, ACS Symposium Series, Materials Degradation Caused by Acid Rain, Robert Baboian Ed., pp. 310-331, American Chemical Society, Washington, D.C. (1986)

[7] Schulz U, Trubiroha P, Shernau U, Baumgart H, Prog. Org. Coat., 40, 151 (2000)

[8] Cassens DL, Feist WC, Johnson BR, Groot RCD, Selection and Use of Preservative-Treated Wood, pp. 85-87, Forest Products Society, Madison, WI (1995)

[9] Williams RS, Knaebe M, J. Coat. Technol., 72, 43 (2000)

[10] McDonald KA, Falk RH, Williams RS, Winandy JE, Wood Decks, pp. 61-75, Forest Products Society, Madison, WI (1996)

[11] Grelier S, Castellan A, Kamdem DP, Wood Fiber Sci., 32(2), 199 (2000)

[12] Hunter RS, The Measurement of Appearance, Academic Press, New York (1987)

[13] Sheppard CJR, Shotton DM, Confocal Laser Scanning Microscopy, pp. 1-106, BIOS Scientific Publishers, New York (1997)

[14] Bio-Rad Microscience Ltd., MRC-1204 Laser Scanning Confocal Imaging System Operating Manual, Issue 2.0 (1996)

[15] Meijer MD, Militz H, Holzforschung, 53, 553 (1999)

[16] Mori K, Tachi K, Muramatsu M, Torita K, Proceedings of the XXIV FATIPEC Congress, Vol. A, p. 101 (1998)

[17] Stevani CV, Faria DLAD, Porto JS, Trindade DJ, Bechara EJH, Bechara EJH, Polym. Degrad. Stabil., 68, 64 (2000)

[18] Schnabel W, Polymer Degradation, p. 179, Hanser International, New York (1981)

[19] Turner GPA, Introduction to Paint Chemistry and Principles of Paint Technology, 3rd edn., pp. 77-78, Chapman and Hall, New York (1988)

[20] Feist WC, Forest Prod. J., 37, 15 (1987)

[21] Williams RS, Feist WC, J. Coat. Technol., 66, 109 (1994)

[22] Gabriele PD, Geib JR, Iannucci RM, Reid WJ, The Effects of Hostile Environments on Coatings and Plastics, D.P. Garner, and G.A. Stahl Eds., p. 317, American Chemical Society, Washington, D.C. (1983)

[23] Schrof W, Beck E, Etzrodt G, Hintze-Brning H, Meisenburg U, Schwalm R, Warming J, Prog. Org. Coat., 43, 1 (2001)

[24] Bhawalkar JD, Swiatkiewicz J, Prasad PN, Pan SJ, Shih A, Samarabandu JK, Cheng PC, Reinhardt BA, Polymer, 38(17), 4551 (1997)