Article
  • Polypropylene Nanocomposites with Graphene Oxide Containing Flame Retardant Moieties
  • Seung Won Lee, Huiseob Shin, Yong Hun Lee*, Jong-Chan Lee, and Jae Young Jho

  • School of Chemical and Biological Engineering, Seoul National University, Seoul 08826, Korea
    *Department of Application and Development, S-Oil TS&D center, Seoul 07795, Korea

  • 폴리프로필렌/난연제 함유 산화그래핀 복합재료
  • 이승원 · 신휘섭 · 이용훈* · 이종찬 · 조재영† 

  • 서울대학교 공과대학 화학생물공학부, *㈜에쓰-오일

Abstract

Graphene oxide (GO) was functionalized with phosphorus-containing groups to give the flame retardancy to the polypropylene (PP)/GO nanocomposites. The composites were prepared via melt mixing with maleic anhydride-grafted PP (MAPP) as a compatibilizer. Through the Fourier transform infrared (FTIR) spectroscopy, and X-ray photoelectron spectroscopy (XPS), covalently-bonded flame retardant moieties on GO were characterized. The effect of the functionalization of GO and the use of compatibilizer on the morphology, flame retardancy, and mechanical properties of the PP/GO composites were investigated. SEM observation of the composites showed that the addition of MAPP improved the exfoliation and dispersion state of the GO sheets by improving the interfacial interaction between the filler and the matrix. For PP/functionalized GO composites, the limiting oxygen index (LOI), Young’s modulus, and tensile strength were increased compared with PP/GO composites.


폴리프로필렌(polypropylene, PP)/산화그래핀(graphene oxide, GO) 복합재료의 난연성과 기계적 성질을 향상시키기 위해 GO를 인계 난연제로 개질시켰다. 복합재료는 무수말레인산이 수식된 PP(maleic anhydride-grafted PP, MAPP)를 상용화제로 사용하여 용융 혼합 방식으로 제작되었다. 푸리에 적외선 분광학(Fourier transform infrared, FTIR), 광전자분광법(X-ray photoelectron spectroscopy, XPS)을 통해 난연제와 GO 사이에 공유 결합이 형성된 것을 확인할 수 있었다. GO의 기능화와 상용화제 사용이 PP/GO 복합재료의 형태학, 난연성, 기계적 성질에 미치는 영향을 평가하였다. 주사전자현미경(SEM)을 이용한 형태학 분석 결과, MAPP를 첨가함으로써 충전제와 기지재 사이의 계면 상호작용이 증가되어 GO의 박리 및 분산성이 향상되었다. PP/기능화된 GO 복합재료의 한계산소지수, 영 탄성률, 인장 강도가 PP/GO 복합재료에 비해 증가된 결과를 나타냈다.


Keywords: polypropylene, graphene oxide, composite, flame retardant

  • 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): 725-733

    Published online Sep 25, 2020

  • 10.7317/pk.2020.44.5.725
  • Received on Jun 2, 2020
  • Revised on Jun 5, 2020
  • Accepted on Jun 5, 2020

Correspondence to

  • Jae Young Jho
  • School of Chemical and Biological Engineering, Seoul National University, Seoul 08826, Korea

  • E-mail: jyjho@snu.ac.kr