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

The Korea Academia-Industrial cooperation Society (한국산학기술학회)
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The Effect of Water Activation on Chemical Modification of Cellulose and Characterization

Water activation에 기반한 셀룰로오스의 개질 및 특성

  • Kim, Hae-Ri (School of Energy.Materials.Chemical Engineering, Department of Applied Chemical Engineering, Korea University of Technology and Education) ;
  • Nam, Byeong-Uk (School of Energy.Materials.Chemical Engineering, Department of Applied Chemical Engineering, Korea University of Technology and Education)
  • 김해리 (한국기술교육대학교 에너지.신소재.화학공학부 응용화학공학과) ;
  • 남병욱 (한국기술교육대학교 에너지.신소재.화학공학부 응용화학공학과)
  • Received : 2012.10.23
  • Accepted : 2013.02.06
  • Published : 2013.02.28
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Abstract

Cellulose mixed esters (CME), substituted by various fatty acyl chains, are renewable bio-based polyesters. It has lots of potential due to the biodegradable property. In this study, Alpha cellulose was activated for 2h at $40^{\circ}C$ in deionized water prior to synthesis. Homogeneous esterification of CME was accomplished with water-activated alpha cellulose, various saturated fatty acids and acetic anhydride in lithium chloride/N,N-dimethylacetamide (LiCl/DMAc) medium. CME was obtained after 5 hr at $120^{\circ}C$. The filtrated products were characterized using TGA, FT-IR, 1H-NMR and FE-SEM, and the influence of water activation on the total degree of substitution was investigated.

다양한 종류의 지방산 아실 체인으로 치환된 Cellulose mixed esters(CME)는 재생 가능한 bio-based 폴리머이다. 셀룰로오스 에스터는 생분해성 고분자로써, 분해되지 않는 석유계 플라스틱을 대체할 미래 고분자 소재이다. 본 연구에서는 개질 실험에 앞서 alpha 셀룰로오스를 $40^{\circ}C$의 증류수에 2시간동안 activation하였다. Water-activated 셀룰로오스와, 다양한 불포화 지방산, 무수 아세트산을 $120^{\circ}C$의 lithium chloride/N,N-dimethylacetamide (LiCl/DMAc)용매에서 5시간동안 반응시켜 CME를 합성했다. 세척과 감압을 반복한 후, TGA, FT-IR, 1H-NMR과 FE-SEM를 통해 특성을 관찰하였고, water activation이 셀룰로오스의 수산기 치환에 미치는 영향에 대하여 조사하였다.

Keywords

References

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