Cellulose

, Volume 14, Issue 6, pp 585–592

Cellulose microfibrils from banana farming residues: isolation and characterization

  • Robin Zuluaga
  • Jean-Luc Putaux
  • Adriana Restrepo
  • Iñaki Mondragon
  • Piedad Gañán
Article

DOI: 10.1007/s10570-007-9118-z

Cite this article as:
Zuluaga, R., Putaux, JL., Restrepo, A. et al. Cellulose (2007) 14: 585. doi:10.1007/s10570-007-9118-z

Abstract

Cellulose microfibrils have been prepared from banana rachis using a combination of chemical and mechanical treatments. The morphology and structure of the samples were characterized using transmission electron microscopy, atomic force microscopy, and X-ray diffraction. Fourier-transformed infrared spectroscopy (FTIR) was used to characterize the chemical modifications of the samples after each treatment. Suspensions of bundled or individualized 5-nm-wide microfibrils were obtained after homogenization (PH) whereas an organosolv (PO) treatment resulted in shorter aggregates of parallel cellulose microcrystallites. The sharper rings in the X-ray diffraction pattern of the PO-treated sample suggest a higher crystallinity due to a more efficient removal of hemicelluloses and dissolution of amorphous zones by the acid treatment. Both microfibrils and microcrystals prepared by both methods can be used as reinforcing filler in nanocomposite materials.

Keywords

Banana rachisCellulose microfibrilsChemical treatmentsCristallinityHomogenization

Abbreviations

TEM

Transmission electron microscopy

SEM

Scanning electron microscopy

AFM

Atomic force microscopy

PH

Peroxide/homogenization

PO

Peroxide/organosolv

FTIR

Fourier transform infrared spectroscopy

Copyright information

© Springer Science+Business Media, Inc. 2007

Authors and Affiliations

  • Robin Zuluaga
    • 1
    • 2
  • Jean-Luc Putaux
    • 3
  • Adriana Restrepo
    • 1
  • Iñaki Mondragon
    • 4
  • Piedad Gañán
    • 1
  1. 1.New Materials Research GroupUniversidad Pontificia BolivarianaMedellínColombia
  2. 2.Agro-industrial Engineering ProgrammeUniversidad Pontificia BolivarianaMedellínColombia
  3. 3.Centre de Recherches sur les Macromolécules Végétales (CERMAV-CNRS)Université Joseph Fourier and member of the Institut de Chimie Moléculaire de GrenobleGrenoble cedex 9France
  4. 4.“Materials+Technologies” Group, Chemical and Environmental Engineering Department, Polytechnic SchoolUniversidad del País Vasco/Euskal Herriko UnibertsitateaDonostia-San SebastiánSpain