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Chemistry in Industry : Journal of Chemists and Chemical Engineers of Croatia, Vol. 69 No. 5-6 (special issue), 2020.

Original scientific paper

https://doi.org/10.15255/KUI.2019.064

Preparation and Characterization of Biocomposite Based on Polylactide (PLA) and Bacterial Nanocellulose (BNC)

Nikolina Mrkonjić ; Faculty of Chemical Engineering and Technology University of Zagreb, Marulićev trg 19 10 000 Zagreb, Croatia
Gordana Martinko orcid id orcid.org/0000-0001-8629-158X ; Faculty of Chemical Engineering and Technology, University of Zagreb, Marulićev trg 19, 10 000 Zagreb, Croatia
Emi Govorčin Bajsić ; Faculty of Chemical Engineering and Technology, University of Zagreb, Marulićev trg 19, 10 000 Zagreb, Croatia
Igor Slivac ; University of Zagreb, Faculty of Food Technology and Biotechnology, Croatia
Vedrana Špada orcid id orcid.org/0000-0002-2853-2661 ; Materials’ Research Centre of the Istra County – METRIS,Croatia
Tamara Holjevac Grgurić ; University of Zagreb, Faculty of Metallurgy, Sisak, Croatia

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Abstract

Polylactic acid (PLA) and bacterial nanocellulose (BNC) are promising materials in medicine due to their biodegradability, biocompatibility, and non-toxicity. The aim of this work was to prepare and characterize the PLA/BNC biocomposite. Morphology, chemical composition, thermal properties, thermal stability, hydrophobicity and cell seeding, and growth of the PLA/BNC biocomposite were characterized by means of scanning electron microscopy (SEM), Fourier transform infrared spectra (FTIR), differential scanning calorimetry (DSC), thermogravimetric analysis (TGA), contact angle, and MTT method. DSC showed that the glass transition temperature (Tg) of PLA decreased with the addition of BNC due to higher mobility of amorphous PLA phase. The degree of crystallinity increased due to nucleation effect of cellulose. With the addition of BNC, the thermal stability of biocomposite decreased. The PLA/BNC biocomposite exhibited a porous, fibrous structure. The cell seeding test showed the PLA/BNC biocomposite to be suitable for growth of human cells, and therefore, potentially applicable in regenerative medicine and tissue engineering.


This work is licensed under a Creative Commons Attribution 4.0 International License.

Keywords

polylactic acid; bacterial nanocellulose; biocomposites; biomedicine; tissue engineering

Hrčak ID:

238046

URI

https://hrcak.srce.hr/238046

Publication date:

19.5.2020.

Article data in other languages: croatian

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