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Kemija u industriji : Časopis kemičara i kemijskih inženjera Hrvatske, Vol. 69 No. 5-6 (special issue), 2020.

Izvorni znanstveni članak

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

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

Nikolina Mrkonjić ; Fakultet kemijskog inženjerstva i tehnologije, Sveučilište u Zagrebu, Marulićev trg 19, 10 000 Zagreb
Gordana Martinko orcid id orcid.org/0000-0001-8629-158X ; Fakultet kemijskog inženjerstva i tehnologije, Sveučilište u Zagrebu, Marulićev trg 19, 10 000 Zagreb
Emi Govorčin Bajsić ; Fakultet kemijskog inženjerstva i tehnologije, Sveučilište u Zagrebu, Marulićev trg 19, 10 000 Zagreb
Igor Slivac ; Sveučilište u Zagrebu, Prehrambeno-biotehnološki fakultet, Hrvatska
Vedrana Špada orcid id orcid.org/0000-0002-2853-2661 ; Centar za istraživanje materijala Istarske županije – METRIS, Hrvatska
Tamara Holjevac Grgurić ; Sveučilište u Zagrebu, Metalurški fakultet Sisak, Hrvatska

Puni tekst: hrvatski pdf 1.596 Kb

str. 295-302

preuzimanja: 272

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Sažetak

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.

Ključne riječi

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

Hrčak ID:

238046

URI

https://hrcak.srce.hr/238046

Datum izdavanja:

19.5.2020.

Podaci na drugim jezicima: hrvatski

Posjeta: 833 *