방향족 폴리아미드 열가소성 탄성체의 합성과 지방족 폴리아미드의 내열성, 내충격성 향상에의 이용 : 1. Hard Segment와 지방족 폴리아미드의 상용성

안태완; 문순원; 정한모

Polymer(Korea), Vol.19, No.4, 406-414, July, 1995

Aromatic Polyamide Thermoplastic Elastomer : Synthesis and Its Use for the Improvement of Thermal Resistance and Impact Strength of Aliphatic Polyamide : 1. Miscibility of Hard Segment with Aliphatic Polyamide

안태완, 문순원, 정한모

초록

4,4'-Diphenylmethane diisocyanate와 여러 종류의 dicarboxylic acid를 촉매인 3-methyl-1-phenylphospholene oxide의 존재하에서 용액중합하여 주사슬에 방향족 고리를 갖는 여러 종류의 폴리아미드를 합성하였다. 합성한 폴리아미드의 열적성질을 조사하고, 이들의 나일론 66와의 상용거동을 조사하였다. 한 종류의 dicarboxylic acid를 사용하여 합성한 폴리아미드는 전형적인 결정성 고분자의 열적성질을 가졌으나, 여러 종류의 dicarboxylic acid를 혼합 사용하여 합성한 폴리아미드는 쉽게 결정화하지 못하였다. 합성한 폴리아미드와 나일론66의 상용거동을 binary interaction model에 의한 이론치와 비교해 본 결과 블렌딩 시, 분자간 수소결합 정도가 감소함을 알 수 있었다.

The polyamides with aromatic rings in the main chain were synthesized by the solution polymerization of 4,4'-diphenylmethane diisocyanate and dicarboxylic acid in the presence of catalyst, 3-methyl-1-phenylphospholene oxide. The thermal properties and the miscibility behaviors of these polyamides with Nylon 66 were studied. The polyamides synthesized with one kind of dicarboxylic acid had typical thermal properties of crystalline polymers, whereas those synthesized with the mixtures of dicarboxylic acids were not easily crystallized. When the miscibility behaviors of these polyamides with Nylon 66 were compared with those anticipated by binary interaction model, the reduction in intermolecular hydrogen bond between constituent polymers through blending could be estimated.

Keywords:polyamide;Nylon 66;polymer blend;binary interaction model

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[1] Otsuki T, Kakimoto M, Imai Y, J. Polym. Sci. A: Polym. Chem., 26, 2263 (1988)

[2] Otsuki T, Kakimoto M, Imai Y, Makromol. Chem. Rapid Commun., 8, 637 (1987)

[3] Otsuki T, Kakimoto M, Imai Y, Polymer, 31, 2214 (1990)

[4] McCormak WB, "Organic Synthesis," Vol. 5, John Wiley Interscience, New York (1973)

[5] Lee KB, Kim YK, Polym.(Korea), 18(4), 552 (1994)

[6] Koberstein JT, Galambos AF, Macromolecules, 25, 5618 (1992)

[7] Ellis TS, Macromolecules, 22, 742 (1989)

[8] Ellis TS, Macromolecules, 24, 3845 (1991)

[9] VanKrevelen DW, "Properties of Polymers," Elsevier, New York (1990)

[10] McLennaghan AW, Pethrick RA, Eur. Polym. J., 24, 1063 (1988)