Journal of the Korean Wood Science and Technology

The Korean Society of Wood Science & Technology (한국목재공학회)
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Effect of The Addition of Various Cellulose Nanofibers on The Properties of Sheet of Paper Mulberry Bast Fiber

각종 셀룰로오스 나노섬유의 첨가가 닥나무 인피섬유 시트의 특성에 미치는 영향

  • Han, Song-Yi (Department of Forest Biomaterials Engineering, College of Forest and Environmental Sciences, Kangwon National University) ;
  • Park, Chan-Woo (Department of Forest Biomaterials Engineering, College of Forest and Environmental Sciences, Kangwon National University) ;
  • Kim, Bo-Yeon (Department of Forest Biomaterials Engineering, College of Forest and Environmental Sciences, Kangwon National University) ;
  • Lee, Seung-Hwan (Department of Forest Biomaterials Engineering, College of Forest and Environmental Sciences, Kangwon National University)
  • 한송이 (강원대학교 산림환경과학대학 산림바이오소재공학과) ;
  • 박찬우 (강원대학교 산림환경과학대학 산림바이오소재공학과) ;
  • 김보연 (강원대학교 산림환경과학대학 산림바이오소재공학과) ;
  • 이승환 (강원대학교 산림환경과학대학 산림바이오소재공학과)
  • Received : 2015.08.05
  • Accepted : 2015.09.08
  • Published : 2015.11.25
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Abstract

Various cellulose nanofibers (CNF) with different morphology and chemical properties were prepared for the reinforcement of sheet of paper mulberry bast fiber. Lignocellulose nanofiber (LCNF), Holocellulose nanofiber (HCNF), alkali-treated HCNF (AT-HCNF), TEMPO-oxidated nanofiber (TEMPO-NF) and cellulose nanocrystal (CNF) were prepared and their addition effect on the properties of sheet of paper mulberry bast fiber were investigated. Air permeability, surface smoothness, and tensile properties were improved by increasing CNF addition. Its improvement may be due to the CNF deposited between and on paper mulberry bast fibers, which was confirmed by SEM observation.

본 연구는 셀룰로오스 나노섬유를 닥나무 인피섬유 시트의 제조시 첨가하여, 닥나무 인피섬유 시트의 특성에 미치는 영향을 조사하였다. 형태학적 및 화학적 성질이 다른 5종류의 셀룰로오스 나노섬유, 즉 리그노셀룰로오스 나노섬유 (lignocellulose nanofiber, LCNF), 홀로셀룰로오스 나노섬유(holocellulose nanofiber, HCNF), 알칼리처리 홀로셀룰로오스 나노섬유(alkali-treated HCNF, AT-HCNF), TEMPO-산화 나노섬유(TEMPO-oxidated nanofiber, TEMPO-NF), 셀룰로오스 나노크리스탈(cellulose nanocrystal, CNC)을 제조하였으며, 각 나노섬유의 종류 및 첨가량이 닥나무 인피섬유시트 제조시의 여수시간 및 시트의 투기도, 평활도, 인장강도 특성에 미치는 영향을 조사하였다. 여수시간은 모든 나노섬유에 있어서 첨가량이 증가함으로서 길어졌으며, 5%의 첨가량에서 HCNF가 가장 여수시간이 길었다. 또한, 셀룰로오스 나노섬유 첨가량이 증가할수록 시트의 평활도, 인장강도 특성이 향상되었으며, 특히 0.1%의 극히 적은양의 나노섬유 첨가로도 비인장강도 및 탄성계수가 크게 향상되는 것을 알 수 있었다. 이러한 특성 향상은 닥나무 인피섬유 간에 교차적으로 적층되어 있는 셀룰로오스 나노섬유의 충전 효과에 기인하는 것을 전자현미경 사진을 통해 확인할 수 있었다.

Keywords

References

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