Journal of the Korean Applied Science and Technology (한국응용과학기술학회지)

The Korean Society of Applied Science and Technology (한국응용과학기술학회)
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Development of Conductive Polycaprolactone (PCL)-resin based on Reduced Graphene Oxide(rGO)/Polypyrrole (Ppy) composite for 3D-printing application

3D 프린팅 응용을 위한 환원그래핀/폴리피롤 복합체 기반의 전도성 폴리카프로락톤 레진의 개발

  • Jeong, Hyeon Taek (Division of Energy and Environmental Engineering, Daejin University) ;
  • Jung, Hwa Yong (Division of Energy and Environmental Engineering, Daejin University) ;
  • Cho, Young Kwang (Division of Energy and Environmental Engineering, Daejin University) ;
  • Kim, Chang Hyeon (Division of Energy and Environmental Engineering, Daejin University) ;
  • Kim, Yong Ryeol (Division of Energy and Environmental Engineering, Daejin University)
  • 정현택 (대진대학교 에너지환경공학부) ;
  • 정화용 (대진대학교 에너지환경공학부) ;
  • 조영광 (대진대학교 에너지환경공학부) ;
  • 김창현 (대진대학교 에너지환경공학부) ;
  • 김용렬 (대진대학교 에너지환경공학부)
  • Received : 2018.08.16
  • Accepted : 2018.09.21
  • Published : 2018.09.30
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Abstract

3D Printing technology is developing in various prototypes for medical treatment, food, fashion as well as machinery and equipment parts production. 3D printing technology is also able to fully be utilized to other industries in terms of developing its technology which has been reported in many field of areas. 3D printing technology is expected to be used in various applications related to $4^{th}$ industrial revolution such as finished products and parts even it is still carried out in the prototype model. In this study, we have investigated and developed conductive resin for 3d printing application based on reduced graphene oxide(rGO)/Polypyrrole(Ppy) composite and polycaprolactone(PCL) as a biodegradable polymer. The electrical properties and surface morphology of the conductive PCL resin based on therGO/Ppy composite were analyzed by 4point-probe and scanning electron microscope(SEM). The conductive PCL resin based on rGO/Ppy composite is expected to be applicable not only 3D printing, but also electronic materials in other industrial fields.

3D프린팅 기술은 산업적 응용을 넘어서 기계 설비 및 각종 장비의 부품생산뿐만 아니라 의료, 식품, 패션에 이르기까지 많은 시제품들의 개발 및 연구가 진행되고 있다. 3D 프린팅 기반 기술의 적용사례를 볼 때 정밀도와 제작 속도 측면에서도 다른 산업에 충분이 활용될 수 있는 기술의 개발이 보고되고 있으나, 아직까지는 시제품 위주로 이용되고 있으며, 향후 3D 프린팅 기술은 4차산업혁명과 관련하여 광범위한 분야에서 응용될 수 있는 완성품이나 부품제작에 이용될 것으로 예상된다. 본 연구에서는 탄소나노 재료중 대표적으로 많이 이용되는 환원그래핀 [rGO(reduced graphene oxide)]과 전도성 고분자중 생체 친화적인 특성을 갖는 폴리피롤[Ppy(Polypyrrole)]의 복합체를 생분해성 고분자인 폴리카프로락톤 [PCL(polycaprolactone)]과 혼합하여 3D 프린팅용 전도성 레진을 개발하고자 하였다. 결과로, 폴리피롤과 환원그래핀 각각 5 wt%, 0.75 wt% 에서 최적의 전기적 특성을 나타내었으며, 환원그래핀의 농도에 따른 표면분석에서도 이와 부합하는 결과를 확인 할 수 있었다. 본 연구를 통하여 제조된 전도성 레진은 3D 프린팅 뿐만 아니라, 다른 산업분야의 전자재료에도 적용이 가능할 것으로 사료된다.

Keywords

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