Article
  • Preparation of Polyolefin/2D-nanosheet Nanocomposites via Reactor Mixing; Poly(ethylene-co-propylene)/rGO Composites
  • Young Kown Moon, Dong Eun Lee*,† , and Keun-Byoung Yoon

  • Department of Polymer Science & Engineering, Kungpook National University, Daegu 41566, Korea
    *School of Architecture & Civil and Architectural Engineering, Kyungpook National University, Daegu 41566, Korea

  • 반응기 혼합법에 의한 폴리올레핀/2D-나노시트 나노복합체 제조; 에틸렌-프로필렌 공중합체
  • 문영권 · 이동은*,† · 윤근병

  • 경북대학교 고분자공학과, *경북대학과 건축공학부

Abstract

Ethylene-propylene copolymer (EP)/modified reduced graphene oxide (rGO) composites were fabricated via reactor mixing method under mild conditions using Et(Ind)2ZrCl2 activated with methylauminoxane (MAO). Microstructure, mechanical and thermal properties of composites are presented. The rGO nanosheets were homogeneously dispersed in EP matrix and the interfacial adhesion with EP was excellent by the modifying the rGO. Although the thermal stability of the aforementioned composites was relatively unchanged when compared to copolymer, significant enhancements in the mechanical properties were observed (e.g., up to 40% increase in the tensile strength and 50% increase Young’s modulus for composites containing 5.0 wt% rGO). Thus, this reactor mixing provides a method for production of high performance polyolefins.


알킬개질 환원 산화 그래핀(rGO)이 분산된 에틸렌-프로필렌 공중합 복합체를 반응기 혼합법으로 제조하였다. 이 반응기 혼합법은 Et(Ind)2ZrCl2/methylauminoxane(MAO) 촉매계를 사용하여 에틸렌-프로필렌의 용액중합 후 반응기 내에 rGO를 첨가하는 방법이다. 제조된 복합체의 미세구조, 기계적 및 열적 성질을 조사하였다. 복합체 내에 rGO는 균일하게 분산되었으며, 알킬개질로 인하여 rGO와 에틸렌-프로필렌 공중합체의 표면 접착력이 증가한 것으로 판단된다. rGO 첨가에 따라 열안정성의 변화는 거의 없었으나, 기계적 물성이 크게 증가하였다(5 wt% rGO 첨가하였을 때, 인장강도와 모듈러스는 각각 40%, 50% 증가). 따라서 반응기 혼합법은 고기능 폴리올레핀의 제조에 유용할 것으로 판단된다.


Keywords: reactor mixing, reduced graphene oxide, polyolefin, ethylene-propylene copolymer

  • Polymer(Korea) 폴리머
  • Frequency : Bimonthly(odd)
    ISSN 0379-153X(Print)
    ISSN 2234-8077(Online)
    Abbr. Polym. Korea
  • 2018 Impact Factor : 0.500
  • Indexed in SCIE

This Article

  • 2020; 44(5): 652-657

    Published online Sep 25, 2020

  • 10.7317/pk.2020.44.5.652
  • Received on Apr 13, 2020
  • Revised on Jun 20, 2020
  • Accepted on Jun 20, 2020

Correspondence to

  • Dong Eun Lee* and Keun-Byoung Yoon
  • Department of Polymer Science & Engineering, Kungpook National University, Daegu 41566, Korea
    *School of Architecture & Civil and Architectural Engineering, Kyungpook National University, Daegu 41566, Korea

  • E-mail: dolee@knu.ac.kr, kbyoon@knu.ac.kr