액정 폴리에스테르와 엔지니어링 플라스틱의 복합재료 연구(I)

방문수; 장진해; 조병욱

Polymer(Korea), Vol.18, No.6, 996-1005, November, 1994

Export Citation

액정 폴리에스테르와 엔지니어링 플라스틱의 복합재료 연구(I)

On the Composites of Engineering Plastics with Liquid Crystalline Polyesters(I)

방문수, 장진해, 조병욱

초록

열방성 액정 폴리에스테르를 합성하여 코일형 고분자와 블렌드하여 새로운 액정 고분자 복합재료를 개발하기 위한 목적으로 쉽게 특성을 알수있는 액정 고분자를 새로이 합성하고 이를 폴리에틸렌 테레프탈레이트(PET)와 용액 블렌드하여 이들의 슥성을 조사하였다. 합성된 액정 중합체의 구조는 다음과 같으며, 녹는 온도가 259.6℃인 nematic액정 고분자임을 알 수 있었다. 블렌드에서 LCP의 함량이 증가할수록 이의 domain size는 증가하였으며 50%블렌드에서는 상분리 현상을 관찰할 수 있었다. 블렌드 압출섬유내에서 LCP의 domain 크기는 약 0.03㎛ 정도 이었으며 skin-core 효과를 볼 수 있었다.

A thermotropic liquid crystalline polyester(TLCP) was synthesized for the application of in-situ composite. The TLCP was designed in a sense of easy characterization and improving compatibility with the matrix polymer. The chemical structure of the TLCP is The TLCP showed nematic behavior in melt with a m.p. 259.6℃. Domain size of the TLCP in the blend was increased with increasing TLCP content and a macrophase separation was observed in the blends containing 50% TLCP only on hot stage of a polarizing microscope. The skin-core effect was observed in the fiber extrudate and the average domain of the TLCP in the skin side was 0.03㎛ in size.

Keywords:liquid crystalline polyester;in-situ composite;phase separation;polyblend

[References]

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Baird DG, J. Rheol., 23, 505 (1979)
Blizard KG, Baird DG, SPE 45th ANTEC, Conf. Proc., Boston, 311 (1986)
Chung T, SPE 45th ANTEC Tech., Papers, 33, 1404 (1987)
Isayev A, Modic MJ, Polym. Compos., 8, 158 (1987)
Ramanathan R, Bilizard KG, Baird DG, SPE 45th ANTEC Tech., Papers, 33, 1399 (1987)
Joeseph EG, Wilkes GL, Baird DG, "Polymer Liquid Crystals," A. Blunstein ed., p. 197, Plenum Press, N.Y. (1984)
Zhuang P, Kyu T, White JL, Polym. Eng. Sci., 28, 17 (1988)
Vinogradov GV, Int. J. Polym. Mater., 9, 187 (1982)
Cogswell FN, Griffin BP, Rose JB, U.S. Patent, 4,433,083 (1994)
Cogswell FN, Griffin BP, Rose JB, U.S. Patent, 4,438,236 (1994)
Joseph EG, Wilkes GL, Baird DG, Am. Chem. Soc. Div. Polym. Chem. Polym. Prepr., 25, 94 (1984)
Kimura M, Poter RS, J. Polym. Sci. B: Polym. Phys., 22, 1697 (1984)
Siegmann A, Dagan A, Kenig S, Polymer, 26, 1325 (1985)
Kiss G, Polym. Eng. Sci., 27(6), 410 (1987)
Blizard KG, Baird DG, Polym. Eng. Sci., 27, 653 (1987)
Weise RA, Huh W, Nicolais L, Polym. Eng. Sci., 27, 684 (1987)
Acierno D, Amendola E, Carfagna C, Nicolais L, Nobile R, Mol. Cryst. Liq. Cryst., 153, 533 (1987)
Chung T, Plast. Eng., 43, 39 (1987)
James SG, Donald AM, Macdonald WA, Mol. Cryst. Liq. Cryst., 153, 491 (1987)
Kohli A, Chung N, Weise RA, Polym. Eng. Sci., 29, 573 (1989)
Nobile MR, Amendola E, Nicolais L, Acierno D, Carfagna C, Polym. Eng. Sci., 29, 244 (1989)
Ko CU, Wilkes GL, J. Polym. Sci., 37, 3063 (1989)
Crevecoeur G, Groeninckx G, Polym. Eng. Sci., 30, 532 (1990)
Farris RJ, Jo BW, U.S. Patent, 92/05670 (1993)
Jo BW, "High Perfermance Polymer," INSA-KOSEP Symposium, 28 (1991)
Jo BW, China-Korea Joint Polymer Symposium, 16 (1993)
Jo YI, M.S. Thesis, Korea University, Seoul, Korea (1991)
Higast F, Mashimo T, Takahashi I, J. Polym. Sci. A: Polym. Chem., 24, 97 (1986)

[Referenced By]

[1] Jackson WJ, Kuhfuss HF, J. Polym. Sci. A: Polym. Chem., 14, 2043 (1976)

[2] Baird DG, J. Rheol., 23, 505 (1979)

[3] Blizard KG, Baird DG, SPE 45th ANTEC, Conf. Proc., Boston, 311 (1986)

[4] Chung T, SPE 45th ANTEC Tech., Papers, 33, 1404 (1987)

[5] Isayev A, Modic MJ, Polym. Compos., 8, 158 (1987)

[6] Ramanathan R, Bilizard KG, Baird DG, SPE 45th ANTEC Tech., Papers, 33, 1399 (1987)

[7] Joeseph EG, Wilkes GL, Baird DG, "Polymer Liquid Crystals," A. Blunstein ed., p. 197, Plenum Press, N.Y. (1984)

[8] Zhuang P, Kyu T, White JL, Polym. Eng. Sci., 28, 17 (1988)

[9] Vinogradov GV, Int. J. Polym. Mater., 9, 187 (1982)

[10] Cogswell FN, Griffin BP, Rose JB, U.S. Patent, 4,433,083 (1994)

[11] Cogswell FN, Griffin BP, Rose JB, U.S. Patent, 4,438,236 (1994)

[12] Joseph EG, Wilkes GL, Baird DG, Am. Chem. Soc. Div. Polym. Chem. Polym. Prepr., 25, 94 (1984)

[13] Kimura M, Poter RS, J. Polym. Sci. B: Polym. Phys., 22, 1697 (1984)

[14] Siegmann A, Dagan A, Kenig S, Polymer, 26, 1325 (1985)

[15] Kiss G, Polym. Eng. Sci., 27(6), 410 (1987)

[16] Blizard KG, Baird DG, Polym. Eng. Sci., 27, 653 (1987)

[17] Weise RA, Huh W, Nicolais L, Polym. Eng. Sci., 27, 684 (1987)

[18] Acierno D, Amendola E, Carfagna C, Nicolais L, Nobile R, Mol. Cryst. Liq. Cryst., 153, 533 (1987)

[19] Chung T, Plast. Eng., 43, 39 (1987)

[20] James SG, Donald AM, Macdonald WA, Mol. Cryst. Liq. Cryst., 153, 491 (1987)

[21] Kohli A, Chung N, Weise RA, Polym. Eng. Sci., 29, 573 (1989)

[22] Nobile MR, Amendola E, Nicolais L, Acierno D, Carfagna C, Polym. Eng. Sci., 29, 244 (1989)

[23] Ko CU, Wilkes GL, J. Polym. Sci., 37, 3063 (1989)

[24] Crevecoeur G, Groeninckx G, Polym. Eng. Sci., 30, 532 (1990)

[25] Farris RJ, Jo BW, U.S. Patent, 92/05670 (1993)

[26] Jo BW, "High Perfermance Polymer," INSA-KOSEP Symposium, 28 (1991)

[27] Jo BW, China-Korea Joint Polymer Symposium, 16 (1993)

[28] Jo YI, M.S. Thesis, Korea University, Seoul, Korea (1991)

[29] Higast F, Mashimo T, Takahashi I, J. Polym. Sci. A: Polym. Chem., 24, 97 (1986)