화학공학소재연구정보센터
홈 로그인 로그아웃 연락처 사이트맵
Polymer(Korea), Vol.31, No.4, 283-288, July, 2007
Export Citation
ABS-g-MAH를 포함한 Poly(acrylonitrile-butadiene-styrene)과 Polycarbonate 고분자 블렌드의 유변학적, 기계적, 형태학적 물성
Rheological, Mechanical and Morphological Properties of Poly(acrylonitrile-butadiene-styrene)/Polycarbonate Blends with ABS-g-MAH
송기헌, 홍존희, 승유택, 김연희, 한미선, 윤호규1, 김우년†
  • 고려대학교 화공생명공학과
  • 1고려대학교 신소재공학부
Ki Heon Song, John Hee Hong, Yu Taek Sung, Youn Hee Kim, Mi Sun Han, Ho Gyu Yoon1, and Woo Nyon Kim†
  • Department of Chemical and Biological Engineering, Korea University, Anam-dong, Seongbuk-ku, Seoul 136-701, Korea
  • 1Department of Materials Science, Korea University, Anam-dong, Seongbuk-ku, Seoul 136-701, Korea
E-mail:
초록
Poly(acrylonitrile-butadiene-styrene)(ABS)/polycarbonate(PC)(70/30, wt%) 블렌드에 상용화제를 첨가하여 이축 압출기로 시편을 제조하였다. 사용된 상용화제는 ABS에 maleic anhydride(MAH)와 dicumyl peroxide(DCP)를 첨가하여 반응압출을 통하여 그래프트시킨 ABS-g-MAH이었다. ABS/PC(70/30) 블렌드에 상용화제를 5 phr 첨가한 경우 인장강도는 큰 증가는 관찰되지 않았으나, 약 52.25 MPa에서 55.03 MPa로 약간 증가하였다. ABS/PC(70/30) 블렌드의 유변학적 물성을 측정한 결과 상용화제 첨가 시 낮은 진동수 영역에서 탄성률의 증가가 관찰되었으며, 이와 같은 탄성률 증가는 손실탄성률보다 저장탄성률에서 더 잘 나타났다. 또한 ABS/ PC(70/30) 블렌드에 ABS-g-MAH를 1∼10 phr 첨가 시 분산상인 PC의 크기는 약 1.2에서 1.5 m로 큰 변화가 없음을 알 수 있었다. 이상의 연구 결과로서 저장탄성률 증가 및 복소점도 상승 그리고 인장강도의 증가로부터 ABS-g-MAH의 양이 5 phr일 때 ABS/PC(70/30) 블렌드에서 효과적인 상용화제로 작용함을 알 수 있었다.
Polymer blends containing poly(acrylonitrile-butadiene-styrene)(ABS) and polycarbonate (PC)(70/30, wt%) with compatibilizer were prepared using twin screw extruder. Compatibilizers were prepared by reactive extrusion with the ABS, maleic anhydride(MAH) and dicumyl peroxide(DCP) using twin screw extruder. In the ABS/PC (70/30) blends, tensile strength did not change significantly, but increased from 52.25 to 55.03 MPa when the ABS-g-MAH was added in the amount of 5 phr. From the results of rheological properties, storage modulus of the ABS/PC/ABS-g-MAH blends at low frequencies showed lager value than that of the ABS/PC(70/30) blend. From the results of the morphological properties of the ABS/PC(70/30) blend, it was observed that the drop size of the PC ranged from 1.2 to 1.5 μm and did not change significantly with the addition of the ABS-g-MAH(1~10 phr). From the results of the storage modulus, complex viscosity, and tensile strength of the ABS/PC (70/30) blends, it is found that the ABS-g-MAH is an effective compatibilizer in the ABS/PC (70/30) blends when the ABS-g-MAH is added in the amount of 5 phr.
Keywords:ABS/PC blend;ABS-g-MAH;reactive extrusion;morphology;rheology
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