Influence of the acid type in the production of chitosan films reinforced with bacterial nanocellulose

J. Velásquez-Cock, E. Ramírez, S. Betancourt, J. L. Putaux, M. Osorio, C. Castro, P. Gañán, R. Zuluaga

    Research output: Contribution to journalArticlepeer-review

    44 Scopus citations

    Abstract

    Chitosan films reinforced with bacterial cellulose (BC) nanoribbons were studied to understand the influence of acid (acetic and lactic acids) on the reinforcing effect. For both acids, the maximum concentration of the reinforcing constituent was 5. wt% with respect to the dry weight of chitosan. The infrared spectra, mechanical properties, morphology and antimicrobial activity of the films were analyzed. The results showed a difference between the acids in their behavior and effect on the reinforcement, with a tensile strength of 12.3. MPa for the acetic acid films and 3.3. MPa for the lactic acid films. Additionally, the bacterial inhibition tests were shown to be positive for the lactic acid films and negative for the acetic acid films. Therefore, exchanging the acid used in these films may be desirable for certain applications.

    Original languageEnglish
    Pages (from-to)208-213
    Number of pages6
    JournalInternational Journal of Biological Macromolecules
    Volume69
    DOIs
    StatePublished - Aug 2014

    Keywords

    • Acetic acid
    • Antimicrobial films
    • Bacterial cellulose nanoribbons
    • Chitosan
    • Lactic acid

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