히드록시프로필 키틴의 합성과 액정형성

김선정; 이영무

Journal of the Korean Industrial and Engineering Chemistry, Vol.3, No.3, 516-521, September, 1992

Export Citation

히드록시프로필 키틴의 합성과 액정형성

Synthesis of Hydroxypropyl Chitin and Its Liquid Crystalline Character

김선정, 이영무

초록

키틴에 산화프로필렌을 반응시켜 키틴의 수산기에 히드록시프로필기가 치환된 히드록시프로필 키틴(HPCH)을 합성하였다. 여러가지 유기 용매중에서 키틴과 그 유도체의 용해성 시험에서 HPCH가 키틴보다 용해성이 향상되었으며 포름산에서 가장 좋은 용해성을 나타내었다. 포름산을 용매로 HPCH용액을 제조하여 농도를 변화시키면서 편광현미경으로 관찰한 결과 30 wt% 이상의 농도에서 지문형태의 복굴절 현상이 나타났으며, 열분석기(DSC)의 분석에서 열적 특성피크는 관찰되지 않아서 HPCH는 콜레스테릭 구조를 갖는 유방성 액정을 확인할 수 있었다.

Hydroxypropyl chitin (HPCH) was prepared by reacting chitin with propylene oxide. HPCH showed the improved solubility in several organic solvents compared with chitin. It showed the remarkable solubility in formic acid. Form the results of polarized microscopic observatoin of HPCH solution in formic acid, finger-print pattern was observed in concentrations over 30 wt% solution. Since no typical thermogram was observed in DSC scan, the HPCH showed a lyotropic cholestric liquid crystallinity.

[References]

Kaifu K, Nishi N, Komai T, Somorin O, Polym. J., 13, 241 (1981)
Nishi N, Noguchi J, Tokura S, Shiota H, Polym. J., 11, 27 (1979)
Tokura S, Noguchi J, Polym. J., 11, 391 (1979)
Tokura S, Yoshida J, Nishi N, Hiraoki T, Polym. J., 14, 527 (1982)
Saint-Germain J, Vincendon M, Makromol. Chem., 183, 593 (1982)
Pawlowski WP, Sankar SS, Gilbert RD, J. Polym. Sci. A: Polym. Chem., 25, 335 (1987)
Pawlowski WP, Gilbert RD, J. Polym. Sci. B: Polym. Phys., 26, 1101 (1988)
Chanzy H, Peguy A, J. Polym. Sci. B: Polym. Phys., 18, 1137 (1980)
Patel DL, Gilbert RD, J. Polym. Sci. B: Polym. Phys., 19, 1149 (1981)
Tseng SL, Valente A, Gray DG, Macromolecules, 14, 71 (1989)
Fortin S, Charlet G, Macromolecules, 22, 2286 (1989)
Aharomi SM, Mol. Cryst. Liq. Cryst., 56, 237 (1980)
Takahashi A, Sugahara Y, Horikawa Y, Sen-I Gakkaishi, 43, 362 (1987)
Hirano S, Yagi Y, Carbohydr. Res., 92, 319 (1981)
Tokura S, Nishi N, Noguchi J, Polym. J., 11, 781 (1979)
U.S. Patent, 3,278,520 (1966)
U.S. Patent, 3,278,521 (1966)
Meeten GH, Navard P, J. Polym. Sci. B: Polym. Phys., 26, 4113 (1988)
Tokura S, Nishi N, Nishimura SI, Ikeuchi Y, Polym. J., 15, 553 (1983)
Todura S, Yoshida J, Nishi N, Hiraoki T, Polym. J., 14, 527 (1982)
Kurita K, Sannan T, Iwakura Y, Makromol. Chem., 178, 3197 (1977)
Robitaile L, Turcotte N, Fortin S, Charlet G, Macromolecules, 24, 2413 (1991)
Song CQ, Litt MH, Maras-Zloczower I, J. Appl. Polym. Sci., 42, 2517 (1991)

[Referenced By]

[1] Kaifu K, Nishi N, Komai T, Somorin O, Polym. J., 13, 241 (1981)

[2] Nishi N, Noguchi J, Tokura S, Shiota H, Polym. J., 11, 27 (1979)

[3] Tokura S, Noguchi J, Polym. J., 11, 391 (1979)

[4] Tokura S, Yoshida J, Nishi N, Hiraoki T, Polym. J., 14, 527 (1982)

[5] Saint-Germain J, Vincendon M, Makromol. Chem., 183, 593 (1982)

[6] Pawlowski WP, Sankar SS, Gilbert RD, J. Polym. Sci. A: Polym. Chem., 25, 335 (1987)

[7] Pawlowski WP, Gilbert RD, J. Polym. Sci. B: Polym. Phys., 26, 1101 (1988)

[8] Chanzy H, Peguy A, J. Polym. Sci. B: Polym. Phys., 18, 1137 (1980)

[9] Patel DL, Gilbert RD, J. Polym. Sci. B: Polym. Phys., 19, 1149 (1981)

[10] Tseng SL, Valente A, Gray DG, Macromolecules, 14, 71 (1989)

[11] Fortin S, Charlet G, Macromolecules, 22, 2286 (1989)

[12] Aharomi SM, Mol. Cryst. Liq. Cryst., 56, 237 (1980)

[13] Takahashi A, Sugahara Y, Horikawa Y, Sen-I Gakkaishi, 43, 362 (1987)

[14] Hirano S, Yagi Y, Carbohydr. Res., 92, 319 (1981)

[15] Tokura S, Nishi N, Noguchi J, Polym. J., 11, 781 (1979)

[16] U.S. Patent, 3,278,520 (1966)

[17] U.S. Patent, 3,278,521 (1966)

[18] Meeten GH, Navard P, J. Polym. Sci. B: Polym. Phys., 26, 4113 (1988)

[19] Tokura S, Nishi N, Nishimura SI, Ikeuchi Y, Polym. J., 15, 553 (1983)

[20] Todura S, Yoshida J, Nishi N, Hiraoki T, Polym. J., 14, 527 (1982)

[21] Kurita K, Sannan T, Iwakura Y, Makromol. Chem., 178, 3197 (1977)

[22] Robitaile L, Turcotte N, Fortin S, Charlet G, Macromolecules, 24, 2413 (1991)

[23] Song CQ, Litt MH, Maras-Zloczower I, J. Appl. Polym. Sci., 42, 2517 (1991)