Polymer(Korea) (폴리머)

The Polymer Society of Korea (한국고분자학회)
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Preparation and Physical Properties of Polypropylene/Cellulose Composites

폴리프로필렌/셀룰로오스 복합재의 제조 및 물성

  • Jang, Song Yi (Department of Chemical Engineering, Chungbuk National University) ;
  • Kim, Dae Su (Department of Chemical Engineering, Chungbuk National University)
  • 장송이 (충북대학교 공과대학 화학공학과) ;
  • 김대수 (충북대학교 공과대학 화학공학과)
  • Received : 2014.06.24
  • Accepted : 2014.08.06
  • Published : 2015.01.25
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Abstract

Cellulose has attracted much attention as potential reinforcements in green composites. In this study, polypropylene (PP)/cellulose composites were prepared by melt-blending followed by compression molding. To improve interfacial bonding between PP and cellulose, maleic anhydride-grafted polypropylene (MAPP) was used. Mechanical properties of the PP/cellulose composites were investigated by UTM and izod impact tester. Thermal properties of the PP/cellulose composites were investigated by TGA and DSC. SEM images for the fracture surfaces of the composites showed that the MAPP was effective in improving PP/cellulose interfacial bonding. Tensile strength and modulus of the composite were maxima when MAPP content, based on cellulose content, was 3 wt%. With increasing cellulose content, the impact strength of the composites decreased but the tensile strength and modulus increased.

셀룰로오스는 그린 복합재의 보강재로서 많은 관심을 받고 있다. 본 연구에서는 용융혼합 및 압축성형에 의해 폴리프로필렌/셀룰로오스 복합재를 제조하였다. 폴리프로필렌과 셀룰로오스의 계면결합을 향상시키기 위해 말레산 무수물로 개질된 폴리프로필렌(MAPP)을 사용하였다. 폴리프로필렌/셀룰로오스 복합재의 기계적 특성을 알아보기 위해 만능재료시험기와 아이조드 충격시험기를 사용하였고 열적 특성을 조사하기 위해 TGA와 DSC를 사용하였다. 전자현미경(SEM)을 이용한 복합재의 파단면 관찰 결과 MAPP가 폴리프로필렌/셀룰로오스 계면결합 향상에 효과적인 것으로 나타났다. 셀룰로오스 함량 대비 MAPP의 함량이 3 wt%일 때 복합재의 인장강도와 인장탄성률이 최고치를 나타냈다. 셀룰로오스의 함량이 증가할수록 복합재의 충격강도는 감소하는 반면 인장강도와 인장탄성률은 증가하였다.

Keywords

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