Article
  • Mechanical Properties of Natural Material Reinforced Polypropylene Bio-Composites: The Effects of Chemical Modification of Lignin
  • Yeo JS, Lee SW, Hwang SH
  • 천연재료에 의해 보강된 폴리프로필렌 바이오 복합재의 기계적 물성: 리그닌 개질효과
  • 여준석, 이상원, 황석호
Abstract
The surface modified lignin (MAPP-Lignin) was prepared by using polypropylene-graft-maleic anhydride (MAPP) and used to fabricate a polypropylene bio-composite as a second reinforcing filler with microfibriled cellulose (MFC). The surface modification of the lignin was confirmed by FTIR and SEM/EDX measurements. The pristine lignin was also used in the MFC/Lignin/PP bio-composites as control samples. The thermal and mechanical properties of MFC/Lignin/PP bio-composites depended on the mixture ratio of MFC and lignin (pristine lignin or MAPP-Lignin) in the MFC/Lignin/PP bio-composites. It was found that MAPP-Lignin was more efficient to improve tensile strength and tensile modulus in the MFC/Lignin/PP bio-composites than those of pristine lignin.

친수성 리그닌 표면을 polypropylene-graft-maleic anhydride(MAPP)로 개질하여 미세섬유상 셀룰로오스와 함께 폴리프로필렌 바이오 복합재의 혼합 보강재로 사용하였다. FTIR과 SEM/EDX를 이용하여 개질 전 리그닌 표면에 MAPP의 화학결합을 통한 리그닌 표면개질을 확인하였다. 리그닌 표면개질 효과를 비교하기 위하여 개질 전 리그닌을 이용한 3성분(미세섬유상 셀룰로오스/리그닌/폴리프로필렌) 바이오 복합재를 대조군으로 함께 비교하였다. 리그닌과 미세섬유상 셀룰로오스의 혼합비율에 따라 폴리프로필렌 바이오 복합재의 열적 특성과 기계적 특성이 의존하였으며, MAPP로 개질된 리그닌(MAPP-Lignin)에 의한 3성분 바이오 복합재의 인장강도와 인장탄성률은 개질전 리그닌을 사용하였을 때보다 증가하였다.

Keywords: lignin; surface modification; microfibriled cellulose; polypropylene-graft-maleic anhydride; bio-composites; mechanical properties

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  • Polymer(Korea) 폴리머
  • Frequency : Bimonthly(odd)
    ISSN 0379-153X(Print)
    ISSN 2234-8077(Online)
    Abbr. Polym. Korea
  • 2022 Impact Factor : 0.4
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This Article

  • 2015; 39(6): 981-985

    Published online Nov 25, 2015

  • 10.7317/pk.2015.39.6.981
  • Received on Aug 5, 2015
  • Accepted on Sep 17, 2015