Article
  • Toughness Enhancement of Poly(vinyl Chloride) by the Addition of Graphene Oxide-g-Poly(ε-caprolactone)
  • Pilrok Oh, Yong Hwan Seo, and Young Ho Kim

  • Department of Organic Materials and Fiber Engineering, Soongsil University, Dongjak-gu, Seoul 06978, Korea

  • 산화 그래핀-g-폴리(ε-카프로락톤) 첨가에 의한 폴리염화비닐의 인성 향상
  • 오필록 · 서용환 · 김영호

  • 숭실대학교 유기신소재·파이버공학과

Abstract

Graphene oxide-g-poly(ε-caprolactone) (GO-g-PCL) with various graft yields was synthesized by grafting PCL diol on acyl derivative of GO and used as a filler to enhance the toughness of poly(vinyl chloride) (PVC). PVC/GO-g-PCL composite films were prepared by mixing GO-g-PCL of different graft yields with PVC at a constant content or by mixing GO-g-PCL of a constant graft yield with PVC at different contents. Then changes in physical properties including toughness of the composite films and the interactions between PVC and GO-g-PCL were analyzed. GO-g-PCL was more effective in enhancing toughness of PVC than GO, and the toughness improved more as increasing the graft yield of GO-g-PCL. When GO-g(6.4%)-PCL was used, the toughness improvement effect was greatest when the content was 0.3 wt%, and when it was 0.5 wt% or more, the toughness of the composite decreased. GO-g-PCL improves the toughness of PVC by loosening the PVC molecular chain, but when the content exceeds a certain level, the toughness decreases because they aggregate together. Even when GO-g-PCL and bis(2-ethylhexyl) phthalate plasticizer were used together, the effect of improving PVC toughness by the addition of GO-g-PCL was maintained.


염화아실 유도체화한 산화그래핀(GO)에 폴리(ε-카프로락톤)(PCL) 디올을 그래프팅시켜 여러 가지 그래프트율을 갖는 GO-g-PCL을 합성하고, 이를 폴리염화비닐(PVC)의 인성을 향상시키는 필러로 사용하였다. 그래프트율이 다른 GO-g-PCL을 일정 함량으로 PVC와 혼합하거나 그래프트율이 일정한 GO-g-PCL을 서로 다른 함량으로 PVC와 혼합하여 PVC/GO-g-PCL 복합체 필름들을 제조하고, 이들의 인성을 포함한 물성 변화와 PVC와 GO-g-PCL 사이의 상호작용을 분석하였다. GO보다 GO-g-PCL을 사용하거나 GO-g-PCL의 그래프트율이 클수록 PVC의 인성 향상에 효과적이었다. GO-g(6.4%)-PCL을 사용하는 경우, 함량이 0.3 wt%일 때 인성 향상 효과가 가장 컸으며 0.5 wt% 이상으로 되면 복합체의 인성이 오히려 저하되었다. GO-g-PCL은 PVC 분자사슬을 느슨하게 하여 PVC의 인성을 향상시키지만 어느 함량 이상으로 되면 이들이 서로 응집되기 때문에 인성이 감소한다. GO-g-PCL과 비스(2-에틸헥실)프탈레이트 가소제를 함께 사용하더라도 GO-g-PCL의 첨가에 의한 PVC 인성 향상 효과는 유지되었다.


Keywords: poly(vinyl chloride), graphene oxide, poly(ε-caprolactone) grafting, composite, toughness

  • 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

  • 2021; 45(1): 39-49

    Published online Jan 25, 2021

  • 10.7317/pk.2021.45.1.39
  • Received on Jul 7, 2020
  • Revised on Aug 31, 2020
  • Accepted on Sep 4, 2020

Correspondence to

  • Young Ho Kim
  • Department of Organic Materials and Fiber Engineering, Soongsil University, Dongjak-gu, Seoul 06978, Korea

  • E-mail: ssyhkim@ssu.ac.kr