Journal of the Korean Wood Science and Technology

  • 제45권3호
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  • Pages.288-296
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  • 2017
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  • 1017-0715(pISSN)
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  • 2233-7180(eISSN)
한국목재공학회 (The Korean Society of Wood Science & Technology)
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리그노셀룰로오스 나노피브릴의 분무건조 및 건조물의 특성

Spray Drying of Lignocellulose Nanofibril (LCNF) and Characterization of Spray-dried LCNF

  • 박찬우 (강원대학교 산림바이오소재공학과) ;
  • 한송이 (강원대학교 산림바이오소재공학과) ;
  • 이승환 (강원대학교 산림바이오소재공학과)
  • Park, Chan-Woo (Department of Forest Biomaterials Engineering, Kangwon National University) ;
  • Han, Song-Yi (Department of Forest Biomaterials Engineering, Kangwon National University) ;
  • Lee, Seung-Hwan (Department of Forest Biomaterials Engineering, Kangwon National University)
  • 투고 : 2017.03.03
  • 심사 : 2017.04.18
  • 발행 : 2017.05.25
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초록

본 연구에서는 분무건조 조건 및 계면활성제 첨가에 따른 리그노셀룰로오스 나노피브릴(lignocellulose nanofibril, LCNF)의 분무건조 수율 및 건조 LCNF의 형태학적 특성, 치수분포 및 수재분산성을 조사하였다. 원료로는 약 70-300 nm 직경을 지니는 섬유상의 LCNF를 사용하였으며, 분무건조 LCNF는 rod형 파티클의 형태학적 특성을 보였다. $140^{\circ}C$ 온도조건에서의 분무건조 수율이 가장 높았으며, 분무건조 LCNF의 입자크기 또한 가장 작았다. LCNF 현탁액의 농도가 감소할수록 또한 송풍량이 증가할수록 분무건조 수율 및 입자크기가 증가하였다. 또한, 계면활성제의 첨가로 건조 수율을 향상시킬 수 있었으며, 첨가 비율이 증가할수록 평균입자크기가 감소하였다. 건조 LCNF의 입자 크기가 감소할수록, 물에서의 재분산성이 향상되었으며, 수현탁액의 여수시간이 증가하였다.

In this study, the effect of spray-drying conditions and surfactant addition on the spray-drying yield, morphological characterization, size distribution and re-dispersity in water of spray-dried lignocellulose nanofibril (LCNF) were investigated. The freeze-dried LCNF after solvent exchange had linear fiber morphology with a diameter of 70-300 nm, and the spray-dried LCNF showed rod-like particle morphology. The spray-drying yield and particle size of spary-dried LCNF at $140^{\circ}C$ was highest and smallest, respectively. As LCNF concentration and blowing rate decreased and increased, respectively, the spray-drying yield and particle size were increased. The highest spray-drying yield was found at distearyl dimethyl ammonium chloride (DDAC) addition of 10 phr at $140^{\circ}C$. As the particle size decreased and the DDAC content increased, filtration time of spray-dried LCNF in water was decreased and increased, respectively.

키워드

참고문헌

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