Preparation and Properties of Waterborne Polyurethane-Urea/Poly(vinyl alcohol) Blends for High Water Vapor Permeable Coating Materials

Jong-Kook Yun; Hye-Jin Yoo; Han-Do Kim

Macromolecular Research, Vol.15, No.1, 22-30, February, 2007

Jong-Kook Yun, Hye-Jin Yoo¹, and Han-Do Kim^{1, †}

Korea Institute of Footwear & Leather Technology, Busan 614-100, Korea
¹Division of Chemical Engineering, Pusan National University, Busan 609-735, Korea

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High water vapor permeable coating materials were prepared by blending aqueous poly(vinyl alcohol) (PVA) solution with waterborne polyurethane-urea (WBPU) dispersions synthesized by prepolymer mixing process. Stable WBPU/PVA dispersions were achieved at PVA content below 30 wt%. As the water soluble polymer PVA content increased, the number and density of total micro-pores (tunnel-like/isolated micro-pores) formed after the dissolution of PVA in water increased, and the water vapor permeability of coated Nylon fabric also increased significantly. Using WBPU/water soluble polymer PVA blends as a coating material and then dissolving PVA in water was confirmed to be an effective method to obtain prominent breathable fabrics.

Keywords:waterborne polyurethane;poly(vinyl alcohol);water vapor permeability;dissolution;micro-pore

[References]

Hwang KKS, Cooper SL, Yang CZ, Polym. Eng. Sci., 21, 1027 (1981)
Hwang KKS, Cooper SL, Yang CZ, Laupan WR, Aspeckhard TA, J. Macromol. Sci.-Phys. B., 23, 175 (1984)
Ding YS, Yang CZ, Cooper SL, Polymer, 30, 1204 (1989)
Kwak YS, Kim EY, Yoo BH, Kim HD, J. Appl. Polym. Sci., 94(4), 1743 (2004)
Subramani S, Lee JM, Kim JH, Cheong IW,, Macromol. Res., 13(5), 418 (2005)
Kwon JY, Kim HD, Macromol. Res., 14(3), 373 (2006)
Rosthauser JW, Nachtkamp K, in Advances in Urethane Science and Technology, K. C. Frisch and D. Klempner, Eds., 10, 121 (1987)
Watanabe A, Dyeing Ind., 35, 353 (1991)
Corp M, U.S. Patent 4408008 (1983)
Bayer AG, U.S. Patent 4543144 (1985)
Jonkman MF, Bruin P, J. Biomater. Appl., 5, 3019 (1990)
Yen MS, Cheng KL, J. Appl. Polym. Sci., 52(12), 1707 (1994)
Kwak YS, Kim HD, Fibers and Polymers, 3, 153 (2002)
Kwak YS, Kim EY, Kim HD, Lee JB, Colloid Polym. Sci., 283, 880 (2005)
Lomax GR, J. Coated. Fabrics, 25, 39 (1995)
Schutze DI, Thoma W, U.S. Patent 5747582 (1998)
Kuriyama K, Ichihara M, Misazu I, Kashimura I, U.S. Patent 4746684 (1988)
Dieterich D, U.S. Patent 4276044 (1981)
Shuttle D, U.S. Patent 5840812 (1998)
Hayashi S, Ishikawa N, Giordano C, J. Coated Fabrics, 23, 74 (1993)
Yilgor I, Yilgor E, Polymer, 40(20), 5575 (1999)
Kwak YS, Kim HD, Fibers and Polymers, 3, 153 (2002)
Kim YM, Kim TK, Kim BK, Polym. Int., 23, 157 (1992)

[Referenced By]

[1] Hwang KKS, Cooper SL, Yang CZ, Polym. Eng. Sci., 21, 1027 (1981)

[2] Hwang KKS, Cooper SL, Yang CZ, Laupan WR, Aspeckhard TA, J. Macromol. Sci.-Phys. B., 23, 175 (1984)

[3] Ding YS, Yang CZ, Cooper SL, Polymer, 30, 1204 (1989)

[4] Kwak YS, Kim EY, Yoo BH, Kim HD, J. Appl. Polym. Sci., 94(4), 1743 (2004)

[5] Subramani S, Lee JM, Kim JH, Cheong IW,, Macromol. Res., 13(5), 418 (2005)

[6] Kwon JY, Kim HD, Macromol. Res., 14(3), 373 (2006)

[7] Rosthauser JW, Nachtkamp K, in Advances in Urethane Science and Technology, K. C. Frisch and D. Klempner, Eds., 10, 121 (1987)

[8] Watanabe A, Dyeing Ind., 35, 353 (1991)

[9] Corp M, U.S. Patent 4408008 (1983)

[10] Bayer AG, U.S. Patent 4543144 (1985)

[11] Jonkman MF, Bruin P, J. Biomater. Appl., 5, 3019 (1990)

[12] Yen MS, Cheng KL, J. Appl. Polym. Sci., 52(12), 1707 (1994)

[13] Kwak YS, Kim HD, Fibers and Polymers, 3, 153 (2002)

[14] Kwak YS, Kim EY, Kim HD, Lee JB, Colloid Polym. Sci., 283, 880 (2005)

[15] Lomax GR, J. Coated. Fabrics, 25, 39 (1995)

[16] Schutze DI, Thoma W, U.S. Patent 5747582 (1998)

[17] Kuriyama K, Ichihara M, Misazu I, Kashimura I, U.S. Patent 4746684 (1988)

[18] Dieterich D, U.S. Patent 4276044 (1981)

[19] Shuttle D, U.S. Patent 5840812 (1998)

[20] Hayashi S, Ishikawa N, Giordano C, J. Coated Fabrics, 23, 74 (1993)

[21] Yilgor I, Yilgor E, Polymer, 40(20), 5575 (1999)

[22] Kwak YS, Kim HD, Fibers and Polymers, 3, 153 (2002)

[23] Kim YM, Kim TK, Kim BK, Polym. Int., 23, 157 (1992)