Journal of Nanoparticle Research

, Volume 12, Issue 3, pp 841–851 | Cite as

Computer-assisted quantification of the multi-scale structure of films made of nanofibrillated cellulose

Research Paper

Abstract

Films made of nanofibrillated cellulose (NFC) are most interesting for use in packaging applications. However, in order to understand the film-forming capabilities of NFC and their properties, new advanced methods for characterizing the different scales of the structures are necessary. In this study, we perform a comprehensive characterisation of NFC-films, based on desktop scanner analysis, scanning electron microscopy in backscatter electron imaging mode (SEM-BEI), laser profilometry (LP) and field-emission scanning electron microscopy in secondary electron imaging mode (FE-SEM-SEI). Objective quantification is performed for assessing the (i) film thicknesses, (ii) fibril diameters and (iii) fibril orientations, based on computer-assisted electron microscopy. The most frequent fibril diameter is 20–30 nm in diameter. A method for acquiring FE-SEM images of NFC surfaces without a conductive metallic layer is introduced. Having appropriate characterisation tools, the structural and mechanical properties of the films upon moisture were quantified.

Keywords

Microfibrillated cellulose MFC Surface analysis High-resolution electron microscopy Image analysis Modelling and simulation 

References

  1. Abe K, Iwamoto S, Yano H (2007) Obtaining cellulose nanofibers with a uniform width of 15 nm from wood. Biomacromolecules 8:3276–3278CrossRefPubMedGoogle Scholar
  2. Abramoff MD, Magelhaes PJ, Ram SJ (2004) Image processing with ImageJ. Biophotonics int 11(7):36–42Google Scholar
  3. Ahola S, Salmi J, Johansson L-S, Laine J, Österberg M (2008) Model films from native cellulose nanofibrils, preparation, swelling, and surface interactions. Biomacromolecules 9:1273–1282CrossRefPubMedGoogle Scholar
  4. Andresen M, Johansson L-S, Tanem BS, Stenius P (2006) Properties and characterization of hydrophobized microfibrilated cellulose. Cellulose 13:665–667CrossRefGoogle Scholar
  5. Antoine C (2007) Wire marking and its effect upon print-through perception of newsprints. Appita J 60(3):196–203MathSciNetGoogle Scholar
  6. Bockus S (2006) A study of the microstructure and mechanical properties of continuously cast iron products. Metalurgija 45(4):287–290Google Scholar
  7. Chinga G, Solheim O, Mörseburg K (2007a) Cross-sectional dimensions of fiber and pore networks based on Euclidean distance maps. Nordic Pulp Paper Res J 22(4):500–507CrossRefGoogle Scholar
  8. Chinga G, Johnsen PO, Dougherty R, Lunden-Berli E, Walter J (2007b) Quantification of the 3D microstructure of SC surfaces. J Microscopy 227(3):254–265CrossRefMathSciNetGoogle Scholar
  9. Eriksen Ø, Syverud K, Gregersen Ø (2008) The use of microfibrillated cellulose produced from kraft pulp as a strength enhancer in TMP paper. Nord Pulp Paper Res J 23(3):299–304CrossRefGoogle Scholar
  10. Fukuzumi H, Saito T, Iwata T, Kumamoto Y, Isogai A (2009) Transparent and high gas barrier films of cellulose nanofibers prepared by TEMPO-mediated oxidation. Biomacromolecules 10:162–165CrossRefPubMedGoogle Scholar
  11. Gonzalez R, Woods RE (1993) Digital image processing. Addison–Wesley, USAGoogle Scholar
  12. Henriksson M, Berglund LA, Isaksson P, Lindström T, Nishino T (2008) Cellulose nanopaper structures of high toughness. Biomacromolecules 9:1579–1585CrossRefPubMedGoogle Scholar
  13. I’Anson S (1995) Identification of periodic marks in paper and board by image analysis using two-dimensional fast Fourier transforms. Tappi J 78(3):113–119Google Scholar
  14. Iwamoto S, Abe K, Yano H (2008) The effect of hemicelluloses on wood pulp nanofibrillation and nanofiber network characteristics. Biomacromolecules 9:1022–1026CrossRefPubMedGoogle Scholar
  15. Meredith R (1956) The mechanical properties of textile fibres. North-Holland, AmsterdamGoogle Scholar
  16. Mörseburg K, Chinga-Carrasco G (2009) Assessing the combined benefits of clay and nanofibrillated cellulose in layered TMP-based sheets. Cellulose. doi:10.1007/s10570-009-9290-4
  17. Pääkkö M, Ankefors M, Kosonen H, Nykänen A, Ahola S, Österberg M, Ruokolainen J, Laine J, Larsson PT, Ikkala O, Lindström T (2007) Enzymatic hydrolysis combined with mechanical shearing and high-pressure homogenization for nanoscale cellulose fibrils and strong gels. Biomacromolecules 8:1934–1941CrossRefPubMedGoogle Scholar
  18. Rasband WS (1997) ImageJ, U. S. National Institutes of Health, Bethesda, Maryland, USA. http://rsb.info.nih.gov/ij/
  19. Saito T, Nishiyama Y, Putaux JL, Vignon M, Isogai A (2006) Homogeneous suspensions of individualized microfibrils from TEMPO-catalyzed oxidation of native cellulose. Biomacromolecules 7(6):1687–1691CrossRefPubMedGoogle Scholar
  20. Syverud K, Stenius P (2009) Strength and barrier properties of MFC films. Cellulose 16(1):75–85CrossRefGoogle Scholar
  21. Turbak AF, Snyder FW, Sandberg KR (1983) Microfibrillated cellulose, a new cellulose product: properties, uses, and commercial potential. J Appl Polym Sci Appl Polym Symp 37:815–827Google Scholar
  22. Wågberg L, Decher G, Norgren M, Lindström T, Ankefors M, Axnäs K (2008) The build-up of polyelectrolyte multilayers of microfibrillated cellulose and cationic polyelectrolytes. Langmuir 24:784–795CrossRefPubMedGoogle Scholar
  23. Yano H, Nakahara S (2004) Bio-composites produced from plant microfiber bundles with a nanometer unit web-like network. J Mater Sci 39:1635–1638CrossRefADSGoogle Scholar

Copyright information

© Springer Science+Business Media B.V. 2009

Authors and Affiliations

  1. 1.Paper and Fibre Research Institute (PFI AS)TrondheimNorway

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