Wood Science and Technology

, Volume 46, Issue 1–3, pp 193–205 | Cite as

Nanofibers from bagasse and rice straw: process optimization and properties

  • Mohammad L. Hassan
  • Aji P. Mathew
  • Enas A. Hassan
  • Nahla A. El-Wakil
  • Kristiina OksmanEmail author


Nanofibers (NF) were isolated from bleached bagasse and rice straw pulps. The pulps were refined using high-shear ultrafine grinder and then homogenized using high-pressure homogenizer. The efficiency of the used isolation processes was studied by optical microscopy (OM), transmission electron microscopy (TEM), atomic force microscopy (AFM), and testing the tensile properties (wet and dry) of nanopaper sheets made from the nanofibers. In addition, opacity and porosity of nanopaper sheets made after different processing steps were investigated. The microscopy studies showed that the processes used resulted in nanofibers with diameters ranging from 3.5 to 60 nm. The results indicated that main isolation of nanofibers took place during refining using the ultrafine grinding process, while high-pressure homogenization resulted in smaller and more homogeneous size of nanofibers. Nanopaper sheets made from bagasse showed better wet and dry tensile strength properties than those made of rice straw.


Atomic Force Microscopy Bagasse Rice Straw Paper Sheet Cellulose Whisker 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.



The authors would like to thank SIDA for the financial support of the collaboration between Luleå University of Technology, Sweden and National Research Center, Dokki, Cairo, Egypt.


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Copyright information

© Springer-Verlag 2010

Authors and Affiliations

  • Mohammad L. Hassan
    • 1
    • 2
  • Aji P. Mathew
    • 3
  • Enas A. Hassan
    • 1
  • Nahla A. El-Wakil
    • 1
  • Kristiina Oksman
    • 3
    Email author
  1. 1.Cellulose and Paper DepartmentNational Research Center, DokkiCairoEgypt
  2. 2.Center of Excellence for Advanced Sciences, Advanced Materials and Nanotechnology GroupNational Research Center, DokkiCairoEgypt
  3. 3.Division of Manufacturing and Design of Wood and BionanocompositesLuleå University of TechnologyLuleåSweden

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