KI를 사용하여 제조한 Poly(vinyl alcohol)-I<sub>2</sub> 착제 필름의 편광특성 및 열저항에 관한 연구

오세용; 신동윤

Journal of the Korean Industrial and Engineering Chemistry, Vol.10, No.4, 603-607, June, 1999

KI를 사용하여 제조한 Poly(vinyl alcohol)-I₂ 착제 필름의 편광특성 및 열저항에 관한 연구

A Study on the Heat Resistance and Polarization Characteristics of Poly(vinyl alcohol)-I₂ Complex Films Prepared with a Potassium iodide

오세용, 신동윤

초록

Potassium iodide(KI)를 함유하는 poly(vinyl alcohol)(PVA) 필름의 산화공정에 의해 제조된 PVA-iodine 착제물(PVA_KI계)의 편광특성을 조사하였다. PVA-KI계 편광필름의 UV-visible 스펙트럼은 220 nm, 290-360 nm와 650 nm에서 I^-, I₃^-와 I₅^- 발색단에 해당하는 흡수밴드를 각각 나타냈다. PVA-KI계 필름의 편광효율과 투과도는 산화시간, 연신비율, KI 농도 등에 크게 의존하였다. 제조된 편광필름은 99.5%와 45%의 높은 편광효율 및 투과도를 나타냈다. 특히 산화공정에 의해 제조된 편광필름의 열저항은 기존의 PVA-I₂계 편광필름에 비하여 뛰어났다. 이러한 결과는 PVA 편광필름의 산화공정의 차이에 기인된다고 생각된다.

The polarization characteristics of poly(vinyl alcohol)-iodine complex, (PVA-KI system) prepared by the oxidation process of PVA film containing a potassium iodide (KI) were investigated. The UV-visible spectrum of the PVA-KI system polarizing film showed avsorption bands corresponding to I^-, I₃^- and I₅^- chromophoric species at 220 nm, 290-360 nm, respectively. The polarization efficiency and transmittance of PVA-KI system film were significantly influenced by oxidation time, stretching ratio and concentration of KI. The prepared polarizing film exhibited a high polarization efficiency(99.5%) and transmittance(45%). Especially, the heat resistance of the polarizing film was higher than that of a commercial PVA-I₂ polarizing film. It may be argued that the result should come from a difference in oxidation process of PVA polarizing film.

Keywords:PVA-KI system;Polarizing film;Polarization efficiency;Transmittance;Heat resistance

[References]

Zwick MM, J. Appl. Polym. Sci., 9, 2393 (1965)
Zwick MM, J. Polym. Sci. A: Polym. Chem., 4, 1642 (1966)
Yokota T, Kimura Y, Macromol. Chem., 185, 749 (1984)
Takamiya H, Tanahashi Y, Matsuyama T, Tanigami T, Yamaura K, Matsuzawa S, J. Appl. Polym. Sci., 50, 1807 (1993)
Oishi Y, Yamamoto H, Miyasaka K, Polym. J., 19, 1261 (1987)
Land EH, J. Opt. Soc. Am., 41(12), 957 (1951)
Miyasaka K, Adv. Polym. Sci., 108, 91 (1992)
Thulstrup EW, Spectroscopy with Polarized Light, Applied Science Publishers, London (1988)
Mizoguchi R, Kobayashi K, Shimomura T, Kobayashi S, Display, 201 (1983)
Bastiaansen C, Schmidt HW, Nishino T, Smith P, Polymer, 34(18), 3951 (1993)
Oh SY, Shin DY, 화학공학의 이론과 응용, 4(2), 3965 (1998)
Standards of electronic Industries Association of Japan; LD-201 (1983)
Driscoll WG, Vaughan W, "Handbook of Optics," Chap. 10, McGraw-Hill, New York (1978)
Shirakawa H, Louis EJ, McDiarmid AG, Chiang CK, Heeger AJ, J. Chem. Soc.-Chem. Commun., 578 (1977)

[Referenced By]

[1] Zwick MM, J. Appl. Polym. Sci., 9, 2393 (1965)

[2] Zwick MM, J. Polym. Sci. A: Polym. Chem., 4, 1642 (1966)

[3] Yokota T, Kimura Y, Macromol. Chem., 185, 749 (1984)

[4] Takamiya H, Tanahashi Y, Matsuyama T, Tanigami T, Yamaura K, Matsuzawa S, J. Appl. Polym. Sci., 50, 1807 (1993)

[5] Oishi Y, Yamamoto H, Miyasaka K, Polym. J., 19, 1261 (1987)

[6] Land EH, J. Opt. Soc. Am., 41(12), 957 (1951)

[7] Miyasaka K, Adv. Polym. Sci., 108, 91 (1992)

[8] Thulstrup EW, Spectroscopy with Polarized Light, Applied Science Publishers, London (1988)

[9] Mizoguchi R, Kobayashi K, Shimomura T, Kobayashi S, Display, 201 (1983)

[10] Bastiaansen C, Schmidt HW, Nishino T, Smith P, Polymer, 34(18), 3951 (1993)

[11] Oh SY, Shin DY, 화학공학의 이론과 응용, 4(2), 3965 (1998)

[12] Standards of electronic Industries Association of Japan; LD-201 (1983)

[13] Driscoll WG, Vaughan W, "Handbook of Optics," Chap. 10, McGraw-Hill, New York (1978)

[14] Shirakawa H, Louis EJ, McDiarmid AG, Chiang CK, Heeger AJ, J. Chem. Soc.-Chem. Commun., 578 (1977)