Article
  • Study on Effect of Master Batch on the Physical Properties of PP/MWCNT Nanocomposites
  • Juyong Park, Dong Hak Kim, and Younggon Son*,†

  • Dept. of Chemical Engineering, Soonchunhyang University, 22, Soonchunhyang-ro, Asan, Chungnam 31538, Korea
    *Division of Advanced Materials Science and Engineering, College of Engineering, Kongju National University, Cheonan, Chungnam 331717, Korea

  • PP/MWCNT 나노복합재료의 물성에 미치는 마스터 배치의 영향에 관한 연구
  • 박주용 · 김동학 · 손영곤*,†

  • 순천향대학교 나노화학공학과, *공주대학교 신소재공학부

Abstract

Effect of masterbatch (MB) on the properties of polypropylene/multi-walled carbon nanotube (PP/MWCNT) nanocomposites was studied. Nanocomposites with same compositions but different fabrication protocols were compared. In one-step mixing protocol, PP and MWCNT were compounded at once. In two-step mixing protocol, MB was first prepared from PP and high concentration of MWCNT and followed by subsequent dilution process with additional PP and MB. It was found that two-step protocol using MB enhanced the dispersion of MWCNTs and consequently mechanical and electrical properties were improved. When the MB was fabricated by PP, MWCNT and polypropylene-g-maleic anhydride (PP-g-MA), the properties of resulting nanocomposites were higher than those without PP-g-MA. This is attributed to increased affinity between matrix polymer and MWCNT due to the increased polarity of matrix polymer by incorporation of PP-g-MA. When PP of lower viscosity was used for the MB, the dispersion of MWCNT was much enhanced and the mechanical and electrical properties were also increased.


Polypropylene/multi-walled carbon nanotube(PP/MWCNT) 나노복합재료를 제조할 때 마스터 배치(MB)의 사용 효과에 대하여 고찰하였다. PP와 MWCNT를 한 번에 압출하여 제조한 나노복합재료와 PP에 고농도의 MWCNT를 혼합하여 MB를 제조한 후 여기에 PP를 혼합하는 두 단계의 압출을 통하여 제조한 나노복합재료를 비교하였다. 두 단계로 압출하는 것이 한 단계의 압출보다 MWCNT의 분산이 우수하고 높은 기계적 강도 및 전기적 특성을 보임을 알 수 있었다. 또한 MB 제조 시 MWCNT와 동일한 양의 PP-g-MA(maleic anhydride grafted PP)를 첨가하여 만든 MB를 사용하면 더욱 우수한 물성을 가진 나노복합재료를 얻을 수 있었다. 이는 극성이 낮은 PP에 극성이 높은 PP-g-MA를 혼합함으로써 MWCNT와의 친화성을 높이기 때문인 것으로 분석되었다. MB 제조 시 사용되는 PP의 점도가 낮을수록 균일한 MWCNT의 분산을 얻을 수 있었고 기계적 물성 및 전기 전도도가 증가하였다.


Keywords: polypropylene, carbon nanotube, master batch, viscosity effect, polypropylene-g-maleic anhydride

  • Polymer(Korea) 폴리머
  • Frequency : Bimonthly(odd)
    ISSN 0379-153X(Print)
    ISSN 2234-8077(Online)
    Abbr. Polym. Korea
  • 2022 Impact Factor : 0.4
  • Indexed in SCIE

This Article

  • 2019; 43(5): 680-686

    Published online Sep 25, 2019

  • 10.7317/pk.2019.43.5.680
  • Received on Apr 5, 2019
  • Revised on Jul 23, 2019
  • Accepted on Jul 23, 2019

Correspondence to

  • Younggon Son
  • Division of Advanced Materials Science and Engineering, College of Engineering, Kongju National University, Cheonan, Chungnam 331717, Korea

  • E-mail: sonyg@kongju.ac.kr