DOI QR코드

DOI QR Code

Effect of Enzymatic Hydrolysis of Cellulose Nanofibers on the Properties of Poly (Vinyl Alcohol) Nanocomposite

  • 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) ;
  • Lee, Seung-Hwan (Department of Forest Biomaterials Engineering, College of Forest and Environmental Sciences, Kangwon National University)
  • 투고 : 2017.05.10
  • 심사 : 2017.05.17
  • 발행 : 2017.05.31

초록

Enzymatic treatment was conducted to hydrolyze pure cellulose nanofiber (PCNF), holocellulose nanofiber (HCNF), and lignocellulose nanofiber (LCNF) for 6, 24 and 72 hours and thus-obtained nanofibers (1, 3, 5, 10 wt%) were used to reinforce polyvinyl alcohol (PVA). Glucose production yield was increased by enzymatic hydrolysis. Tensile strength and elastic modulus of all PVA nanocomposite reinforced three nanofibers were improved by increasing enzymatic hydrolysis time of nanofibers and these values were higher in order of nanocomposite reinforced with PCNF>HCNF>LCNF. Furthermore, tensile properties of nanocomposite with PCNF were increased by nanofiber content. Thermal stability of PVA was improved by adding nanofibers and by increasing nanofiber content.

키워드

참고문헌

  1. Abdul Khalil HPS, Bhat AH, Yusra AFI. 2012. Green composites from sustainable cellulose nanofibrils: A review. Carbohydr Polym 87: 963-979. https://doi.org/10.1016/j.carbpol.2011.08.078
  2. Abe K, Yano H. 2010. Comparison of the characteristics of cellulose microfibril aggregates isolated from fiber and parenchyma cells of Moso bamboo (Phyllostachys pubescens). Cellulose 17: 271-277. https://doi.org/10.1007/s10570-009-9382-1
  3. Chakraborty A, Sain M, Kortschot M. 2005. Cellulose microfibrils: A novel method of preparation using high shear refining and cryocrushing. Holzforschung 59: 102-107.
  4. Chakraborty A, Sain M, Kortschot M. 2006. Reinforcing potential of wood pulp-derived microfibres in a PVA matrix. Holzforschung 60: 53-58.
  5. Chen W, Yu H, Liu Y, Chen P, Zhang M, Hai Y. 2011. Individualization of cellulose nanofibers from wood using high-intensity ultrasonication combined with chemical pretreatments. Carbohydr Polym 83: 1804-1811. https://doi.org/10.1016/j.carbpol.2010.10.040
  6. Chen Y, Liu C, Chang PR, Cao X, Anderson DP. 2009. Bionanocomposites based on pea starch and cellulose nanowhiskers hydrolyzed from pea hull fibre: Effect of hydrolysis time. Carbohydr Polym 76: 607-615. https://doi.org/10.1016/j.carbpol.2008.11.030
  7. Cheng Q, Wang S, Rials TG. 2009. Poly (vinyl alcohol) nanocomposites reinforced with cellulose fibrils isolated by high intensity ultrasonication. Composites Part A: Applied Science and Manufacturing 40: 218-224. https://doi.org/10.1016/j.compositesa.2008.11.009
  8. Henriksson M, Henriksson G, Berglund LA, Lindstrom T. 2007. An environmentally friendly method for enzyme-assisted preparation of microfibrillated cellulose (MFC) nanofibers. European Polymer Journal 43: 3434-3441. https://doi.org/10.1016/j.eurpolymj.2007.05.038
  9. Iwamoto S, Kai W, Isogai T, Saito T, Isogai A, Iwata T. 2010. Comparison study of TEMPO-analogous compounds on oxidation efficiency of wood cellulose for preparation of cellulose nanofibrils. Polymer Degradation and Stability 95: 1394-1398. https://doi.org/10.1016/j.polymdegradstab.2010.01.017
  10. Jang JH, Hayashi N, Togawa E, Kubo S, Lee SH, Kim NH. 2014b. Nanoscopic morphology change of microfibrillated cellulose by endoglucanase. Proceedings of the 8th International Conference on Green Composite, pp 183-184.
  11. Jang JH, Lee SH, Endo T, Kim NH. 2015. Dimension change in microfibrillated cellulose from different cellulose sources by wet disk milling and its effect on the properties of PVA nanocomposite. Wood Science and Technology 49: 495-506. https://doi.org/10.1007/s00226-015-0703-2
  12. Jang JH, Lee SH, Hayashi N, Togawa E, Kubo S, Kim NH. 2014a. Effect of enzymatic hydrolysis on morphology of microfibrillated cellulose. Proceedings of the Korean society of wood science and technology annual meeting 2014: 62-63.
  13. Kim BY, Han SY, Park CW, Chae HM, Lee SH. 2017. Preparation and Properties of Cellulose Nanofiber Films with Various Chemical Compositions Impregnated by Ultraviolet-Curable Resin. BioResources 12: 1767-1778.
  14. Lu J, Wang T, Drzal LT. 2008. Preparation and properties of microfibrillated cellulose polyvinyl alcohol composite materials. Composites Part A: Applied Science and Manufacturing 39: 738-746. https://doi.org/10.1016/j.compositesa.2008.02.003
  15. Mohanty AK, Misra M, Drazal LT. 2002. Sustainable Bio-Composites from Renewable Resources: Opportunities and Challenges in the Green Materials World. Journal of Polymers and the Environment 10: 19-26. https://doi.org/10.1023/A:1021013921916
  16. Pandey JK, Chu WS, Kim CS, Lee CS, Ahn SH. 2009. Bio-nano reinforcement of environmentally degradable polymer matrix by cellulose whiskers from grass. Composites Part B: Engineering 40: 676-680. https://doi.org/10.1016/j.compositesb.2009.04.013
  17. Pandey JK, Kumar AP, Misra M, Mohanty AK, Drzal LT, Singh RP. 2005. Recent advances in biodegradable nanocomposites. J Nanosci Nanotechnol 5: 497-526. https://doi.org/10.1166/jnn.2005.111
  18. Teixeira RS, da Silva AS, Jang JH, Kim HW, Ishikawa K, Endo T, Lee SH, Bon EP. 2015. Combining biomass wet disk milling and endoglucanase/${\beta}$-glucosidase hydrolysis for the production of cellulose nanocrystals. Carbohydr Polym 128: 75-81. https://doi.org/10.1016/j.carbpol.2015.03.087
  19. Zhao HP, Feng XQ, Gao H. 2007. Ultrasonic technique for extracting nanofibers from nature materials. Appl Phys Lett 90: 073112. https://doi.org/10.1063/1.2450666