Styrenic Polymer 연구 2. Stryene/ Acrylomitrile/ N- Phenylemaleimide Terpolymer의 합성 및 개질 ABS의 물성

안태완; 길유성; 박이순

Polymer(Korea), Vol.17, No.4, 357-364, July, 1993

Studies on the Styrenic Polymer 2.Synthesis of Styrene/Acrylonitrile/N-Phenylmaleimide Terpolymer and Properties of Modified ABS

안태완, 길유성, 박이순

초록

ABS수지의 내열성을 증가시키기 위하여 매트릭스인 SAN고분자 주쇄에 고리 구조를 가진 N-phenylmaleimide(PMI) 단량체를 도입하였다. 즉 styrene과 acrylonitrile(AN)의 무게비를 75 : 25로 도정시키고, PMI의 양을 변화시키면서. 삼원 공중합체(PSAN)을 반 연속 유화 중합법으로 합성하였다. 합성된 PSAN은 그라프트 ABS고무(g-ABS)와 용융 블렌드하여 내열성의 향상 및 기계적 성질과의 관계를 조사하였다. 개질 ABS수지(PSAN : g-ABS=70 : 30)의 내열성. 경도 및 인장강도는 PMI의 함량이 증가할수록 증가하였으나 내충격성은 PSAN중 PMI함량이 l5wt%일 때 최대를 나타내었느며 이것을 PSAN 매트릭스와 고무 성분중 SAN 부분과의 상용성 관계를 조사하여 해석하였다.

To enhance the heat resistance of acrylonitrile-butadiene-styrene(ABS), the matrix part(SAN) was modified by introducing N-phellylmaleimide(PMI) monomer, Styrene-acrylonitrile(AN)-PMI terpolymer was synthesized by the semi-continuous emulsion polymerization method with varying PMI content while keeping styrene/AN ratio at 75/25. PSAN terpolymer was blended with g-ABS rubber part utilizing twin screw extrucler to get modified ABS. Modified ABS sample(PSAN : g-ABS= 70 : 30) showed increased thermal stability, hardness, and tensile strength with increasing amount of PMI in the PSAN terpolymer. The impact strength, however, showed maximum at PMI content of 15 wt.% in PSAN. This behavior could be explained by investigating the miscibility of PSAN and shell part of g-ABS(i. e. SAN 25)

[References]

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[1] Bucknall CB, "Toughened Plastics," p. 90, Applied Science Publishers, Ltd., London (1977)

[2] Basdekis CH, "ABS," Van Nostrand Reinold, New York (1964)

[3] Keading WW, Young LB, Prapas AG, Chemtech., 12, 556 (1982)

[4] Ger. Patent, 2,747,822 (1979)

[5] Mobitzer L, Kress HJ, Lindner C, Ott KH, Angew. Makromol. Chem., 19, 132 (1985)

[6] Bezdek M, Hrabak F, J. Polym. Sci. A: Polym. Chem., 17, 2857 (1979)

[7] El-Aasser MS, "Advances in Emulsion Polymerization and Latex Technology," 1, No. 6, 1 (1991)

[8] Fox TG, Bull. Am. Phys. Soc., 1, 123 (1956)

[9] Coleman MM, Graf JF, Painter PC, "Specific Interactions and the Miscibility of Polymer Blends," Chapter 2, Technomic Publishing Co., Lancaste (1991)

[10] Small PA, J. Appl. Chem., 3, 71 (1953)