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http://dx.doi.org/10.5764/TCF.2015.27.2.126

Fabrication of Silica-Containing Breathable Waterproof Polyurethane Dispersion Film  

Shin, Hyun-Ki (Department of Textile System Engineering, Kyungpook National University)
Huh, Man-Woo (Department of Nursing, Kyungil University)
Yoon, Nam-Sik (Department of Textile System Engineering, Kyungpook National University)
Publication Information
Textile Coloration and Finishing / v.27, no.2, 2015 , pp. 126-131 More about this Journal
Abstract
Silica-polyurethane hybrid breathable films were prepared and their breathabilities were assessed. Appropriately aggregated silica was prepared through sol-gel reaction of water glass and its particle size ranged 360~500nm. The polyurethane dispersion was prepared by the reaction of isophorone diisocyanate(IPDI) as diisocyanate and polytetramethylene glycol(PTMG) and dimethylol propionic acid(DMPA) as polyol, particle size ranging 30~120nm. The reaction between isocyanate and hydroxyl group to form urethane bonding was checked by the intensity of the stretch peak of isocyanate at $2270cm^{-1}$ in the FT-IR. The silica was incorporated into polyurethane dispersion and casted into film. It was shown that the incorporated silica(1~5wt.%) increased water vapour permeability of the films by 30~100%, and decreased the hydrostatic pressure by 10~40%. From the results, it could be concluded that the appropriate hybridization of silica can increase the breathability of polyurethane dispersion film, while minimizing the loss of hydrostatic pressure.
Keywords
breathable; polyurethane; silica; hybrid membrane; water vapor premeability; hydrostatic pressure;
Citations & Related Records
Times Cited By KSCI : 3  (Citation Analysis)
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