Journal of the Korea Academia-Industrial cooperation Society (한국산학기술학회논문지)

The Korea Academia-Industrial cooperation Society (한국산학기술학회)
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Preparation and characterization of isosorbide based PET/polycarbonate blends

Isosorbide가 함유된 바이오 기반 PET와 polycarbonate 블렌드의 제조 및 특성 연구

  • Park, Ji-Soo (Department of Applied Chemical Engineering, School of Energy.Materials.Chemical Engineering, Korea University of Technology and Education) ;
  • Nam, Byeong-Uk (Department of Applied Chemical Engineering, School of Energy.Materials.Chemical Engineering, Korea University of Technology and Education) ;
  • Park, Jun-Seo (Department of Applied Chemical Engineering, School of Energy.Materials.Chemical Engineering, Korea University of Technology and Education)
  • 박지수 (한국기술교육대학교 에너지.신소재.화학공학부 응용화학공학과) ;
  • 남병욱 (한국기술교육대학교 에너지.신소재.화학공학부 응용화학공학과) ;
  • 박준서 (한국기술교육대학교 에너지.신소재.화학공학부 응용화학공학과)
  • Received : 2013.10.28
  • Accepted : 2014.02.05
  • Published : 2014.02.28
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Abstract

Poly(ethylene-co-isosorbide terephthalate) (PEIT) is interest in polymer which has isosorbide monomer that is renewable resources such as corn. However, there is important drawback which is low mechnical properties as increasing isosorbide contents. In this study, polycarbonate used to make up for drawback of mechanical properties of PEIT. In addition, PEIT used to improve the tensile elongation of polycarbonate because PEIT has good sheet proccessability. The effect of polycarbonate on morphology, thermal and mechanical properties were investigated using FE-SEM, DMA, TGA, UTM, and notched izod impact strength tester. As a result of this study, PEIT/PC blends were in compatible system and polycarbonate can act as an improvement of thermal stability and mechanical properties in the blends.

PEIT는 옥수수와 같은 재생 가능한 자원에서 유래한 isosorbide monomer를 이용하여 bio-contents를 함유하고 있는 PET이다. 하지만 isosorbide contents가 향상될수록 기계적물성이 감소하는 단점이 있다. 본 연구에서는 우수한 기계적 물성을 가지고 있는 polycarbonate를 이용하여 PEIT의 단점을 보완하고, 또한 PEIT를 이용하여 PC의 인장신율 향상을 통해 성형가공성을 개선하고자 하였다. 이축압출기를 통해 제조한 PEIT/PC 블렌드에서 polycarbonate가 모폴로지, 유리전이온도거동, 열적안정성 및 기계적 물성에 미치는 영향을 확인하기 위해 FE-SEM, DMA, TGA, UTM 및 Izod impact tester를 통하여 분석을 수행하였다. 이로써 우수한 기계적 물성을 가진 polycarbonate는 PEIT와 상용성이 있음을 확인하였으며, 특히 PEIT25PC75 조성에서 열적 안정성 및 기계적 특성의 향상이 뛰어난 것을 알 수 있었다.

Keywords

References

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