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A Study on the Prepararion of Poly(vinyl alcohol) Polarizing Film

  • Textile Coloration and Finishing
  • Abbr : Text. Color. and Finish.
  • 2004, 16(4), pp.19-25
  • Publisher : The Korean Society Of Dyers And Finishers
  • Research Area : Engineering > Fiber Engineering > Dyeing Engineering

Kim, Sam Soo 1 Lyoo Won Seok 1 우화령 1

1영남대학교

Accredited

ABSTRACT

Both poly(vinyl alcohol)(PVA)-I2 and PVA-dye polarizing film were prepared using PVA with number-average degree of polymerization of 1,700, 2,300, 2,600. The optical property of used dye in this study closed to the that of iodine. The PVA-dye polarizing film was prepared through the dyeing process. In comparison of the result of the measurement of the heat and humidity resistance of two types polarizing films, it of PVA-dye polarizing film was higher than that of a conventional PVA-I2 polarizing film.The transmittance and the polarization efficiency of PVA-dye polarizing fjlm was significantly influenced by dye concentration, dipping time, salt concentration, and temperature of dye bath. The PVA-dye polarizing film exhibited a high polarization efficiency of 99.3% and a good transmittance of 42.4%.

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