화학공학소재연구정보센터
홈 로그인 로그아웃 연락처 사이트맵
Polymer(Korea), Vol.16, No.4, 488-495, July, 1992
Export Citation
클로로프렌과 에틸메타크릴레이트 공중합체의 합성과 상용화 효과
Synthesis and Its Compatibilizing Effect of Poly(chloroprene-co-ethylmethacrylate)
박춘건, 하창식, 이진국, 조원제
초록
클로로프렌(CP)과 에틸메타크릴레이트(EMA) 공중합체(Poly(CP-co-EMA))를 라디칼 용액중합으로 합성하였다. 본 연구에서 제조된 공중합체는 무정형이었고, 유리전이온도는 -34.5℃이었다. 공중합체의 단량체 상대반응성비는 rl(CP)은 2.11이었고, r2(EMA)는 0.27이었다. 폴리클로로프렌(CR)과 폴리에틸메타크릴레이트(PEMA)를 각각 THF에 녹여 블렌드를 얻었고, 이들 블렌드의 상용성을 유리전이온도와 모폴로지로서 조사하였다. 또한, 무게비 50/50 조성의 CR과 PEMA블렌드에 Poly(CP-co-EMA)와 클로로프렌에 EMA론 그라프트시킨 공중합체 (Poly(CR-g-EMA))를 각각 10∼50phr 첨가했을 때의 상용성을 조사하였다. CR/PEMA블렌드는 서로 상용성이 없었지만, 첨가된 Poly(CP-co-EMA) 혹은 Poly(CR-g-EMA)의 존재하에서는 상용성 향상효과가 현저하게 나타났으며, Poly(CP-co-EMA)이 Poly(CR-g-EMA)에 비해 양호한 효과를 나타내었다.
A copolymer of chloroprene(CP) and ethylmethacrylate(EMA) (poly(CP-co-EMA)) was prepared by radical solution copolymerization. The copolymer was amorphous and had glass transition temperature of about -34.5℃. The monomer reactivity ratios were given as rl(CP)=2.11 and r2(EMA)=0.27 in the copolymerization of CP and EMA, respectively. Miscibility of blends of polychloroprene(CR) and polyethylmethacrylate (PEMA), prepared by casting from tetrahydrofuran(THF), were investigated by their glass transition temperature behavior and morphologies. Compatabilization effect of poly(CP-co-EMA) was also studied for the CR/PEMA blend of 50/50wt.% composition. For comparision, the graft copolymer of EMA onto CR (poly(CR-g-EMA)) was also prepared. The blends of CR and PEMA were incompatible. The addition of Poly(CP-co-EMA) or poly(CR-g-EMA) enhanced miscibility between CR and PEMA. The compatibilizing effect of Poly(CP-co-EMA) was more prominent in the blends consisting of each homopolymer than poly(CR-g-EMA).
  1. Graff RS, "Neoprene and Hypalon," in M.Morton, Rubber Technology 3rd. edn., Chap. 12, Van Nostrand, New York (1989)
  2. Stewart CA, Takechita T, Coleman M, "2-chloro-butadiene," in H.F. Mark and C.G. Overberger, "Encyclopedia of Polymer Science and Technology," John Wiley & Sons, New York, 2nd ed., vol. 4, 522 (1985)
  3. Okada T, Otsuru M, J. Appl. Polym. Sci., 23, 2215 (1979) 
  4. Brame EG, Khan AA, Rubber Chem. Technol., 50, 272 (1976)
  5. Khan AA, Brame EG, J. Polym. Sci. B: Polym. Phys., 14, 165 (1976)
  6. Okada T, Izuhara M, Hashimoto T, Polym. J., 7(1), 1 (1975) 
  7. Gaylprdard NG, Patnaik BK, J. Polym. Sci. A: Polym. Chem., 13, 837 (1975)
  8. Choi SK, Ha CS, Cho WJ, Polym.(Korea), 15(5), 539 (1991)
  9. Ebdon JR, Polymer, 15, 782 (1974) 
  10. Masaki A, Yasui M, Yamashita I, J. Macromol. Sci.-Chem., A6(7), 1285 (1972)
  11. Iwakura Y, Kurosaki T, Nakabyashi N, Markromol. Chem., 44, 570 (1961) 
  12. Srinivasan KSV, Radhakrishnan N, Pillai HK, J. Appl. Polym. Sci., 37, 1551 (1989) 
  13. Itoyama K, Dohi M, Ichikawa K, J. Adhes. Soc. Jpn., 20(6), 268 (1984)
  14. Paul DR, Newman S, "Polymer Blends," Vol. I and II, Academic Press, New York (1978)
  15. Paul DR, Locke CE, Vinson CE, Polym. Eng. Sci., 13, 202 (1973) 
  16. Locke CE, Paul DR, J. Appl. Polym. Sci., 17, 2597 (1973) 
  17. Paul DR, Locke CE, Vinson CE, Polym. Eng. Sci., 12, 157 (1972) 
  18. Choi CH, Park CK, Ha CS, Kim BK, Cho WJ, Polym.(Korea), 16(3), 344 (1992)