Structural, morphological and micromechanical characterization of gelatin-bacterial cellulose natural composites

Franck Quero, Abigail Coveney, Anna E. Lewandowska, Paulo Díaz Calderón, Robert M. Richardson, Koon Yang Lee, Stephen J. Eichhorn, M. Ashraf Alam, Javier Enrione

Research output: Contribution to conferencePaperpeer-review

Abstract

The effect of adding bacterial cellulose (BC) to gelatin was investigated. Structural and morphological information from the resulting composite materials was obtained from powder X-ray diffraction, scanning electron microscopy and 2D Raman imaging, revealing an in-homogeneous dispersion of BC within the gelatin matrix. The optical properties of the composite materials were investigated by UV-visible spectrophotometry. The results showed that by adding 10 wt.% BC to gelatin, visible transparency was reduced by ~35 % and UV opacity was increased by ~40 %, compared to gelatin. For the first time, the molecular interaction between gelatin and BC was investigated by Raman spectroscopy showing that it is a relevant tool to quantify the micromechanical interfacial interaction between gelatin and BC.

Original languageEnglish
StatePublished - 2015
Event20th International Conference on Composite Materials, ICCM 2015 - Copenhagen, Denmark
Duration: 19 Jul 201524 Jul 2015

Conference

Conference20th International Conference on Composite Materials, ICCM 2015
CountryDenmark
CityCopenhagen
Period19/07/1524/07/15

Bibliographical note

Funding Information:
F.Q. and J.E. would like to thank FONDECYT (Chile) under the grants N° 3140036 and N° 1140132 respectively and A.C. the EPSRC (UK) under the grant N° EP/G036780/1 for financial support.

Publisher Copyright:
© 2015 International Committee on Composite Materials. All rights reserved.

Keywords

  • Bacterial cellulose
  • Composites
  • Gelatin
  • Interfaces

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