Department of Polymer Science & Engineering, Kyungpook
National University, Daegu 41566, Korea
*School of Architecture & Civil
and Architectural Engineering, Kyungpook National University, Daegu 41566,
Korea
경북대학교 고분자공학과, *경북대학과 건축공학부
Polyethylene/modified 2D-nanosheets
composites were fabricated via the masterbatch technique which was synthesized
by reactor mixing under mild conditions using (n-BuCp)2ZrCl2/methylaluminoxane
(MAO) catalyst. The 2D-nanosheets were modified with octadecylamine (ODA) for
enhancement of dispersion and interaction with the polymer matrix.
Microstructure, thermal and mechanical properties of composites were examined.
The modified 2D-nanosheets were homogeneously dispersed across the composites
and showed good interfacial adhesion between the modified 2D-nanosheets and
polyethylene matrix. The thermal stabilities and mechanical properties of
composites were significantly enhanced (e.g., up to 15% increase in tensile
strength and 100% increase in Young’s modulus for composites containing 5 wt%
2D-nanosheets). Thus, the masterbatch technique was able to produce
high-performance polyolefins.
옥타데실아민(octadecylamine,
ODA)으로 개질한 MoS2와 환원 그래핀옥사이드(rGO)가 분산된 폴리에틸렌 복합체를 마스터배치로 제조하였다. 마스트배치는 (n-BuCp)2ZrCl2/methylaluminoxane(MAO) 촉매계를
사용하여 에틸렌 중합 후 반응기 내에 개질한 2D-나노시트를 첨가하여 혼합하는 방법으로 제조하였다. 복합체의 열적, 기계적 성질 및 미세구조를 조사하였다. 폴리에틸렌 매트릭스에 2D-나노시트는 균일하게 분산되었으며, ODA 개질로 매트릭스와 2D-나노시트 계면의 접착력이 증가한 것으로
판단된다. 2D-나노시트 첨가에 따라 열적성질은 크게 변하지 않았지만,
열안정성 및 기계적 물성은 크게 증가하였다(5 wt% 첨가하였을 때 인장강도와
모듈러스는 각각 15% 및 100% 증가). 따라서 마스터배치를 사용한 나노복합체 제조는 고성능 폴리올레핀 제조에 유용할 것으로 판단된다
Keywords: reactor mixing, 2D-nanosheets, MoS2, rGO, masterbatch
2020; 44(6): 848-853
Published online Nov 25, 2020
Department of Polymer Science & Engineering, Kyungpook National University, Daegu 41566, Korea
*School of Architecture & Civil and Architectural Engineering, Kyungpook National University, Daegu 41566, Korea