Journal of Polymers and the Environment

, Volume 21, Issue 1, pp 166–171 | Cite as

Addition of Saturated Fatty Acids to Biodegradable Films: Effect on the Crystallinity and Viscoelastic Characteristics

  • Marcelo Medre Nobrega
  • Juliana Bonametti Olivato
  • Carmen Maria Olivera Müller
  • Fabio Yamashita
Original Paper


Biodegradable films were produced by extrusion from blends of starch, glycerol and poly(butylene adipate co-terephthalate), a biodegradable polyester, with the addition of 1.5 % (wt/wt) saturated fatty acids (caproic, lauric or stearic). Films containing fatty acids had higher crystallinity than control films and the longer the carbon chain of the acid was, the more crystalline the film. Fatty acids with up to 12 carbon atoms did not alter the viscoelastic characteristic of the films. Further, the incorporation of fatty acids did not decrease the hydrophilicity of the films in comparison with the control film without a fatty acid.


Fatty acids Starch Poly(butylene adipate co-terephthalate) Ecoflex Viscoelasticity Cristallinity 



The authors thank CAPES, CNPq and Araucaria Foundation for financial support and for Master’s scholarships, PNPD and Research Productivity.


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Copyright information

© Springer Science+Business Media, LLC 2012

Authors and Affiliations

  • Marcelo Medre Nobrega
    • 1
  • Juliana Bonametti Olivato
    • 1
  • Carmen Maria Olivera Müller
    • 1
  • Fabio Yamashita
    • 1
  1. 1.Department of Food Science and TechnologyUniversidade Estadual de LondrinaLondrinaBrazil

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