TY - JOUR
T1 - Core-Shell Magnetoactive PHB/Gelatin/Magnetite Composite Electrospun Scaffolds for Biomedical Applications
AU - Pryadko, Artyom S.
AU - Botvin, Vladimir V.
AU - Mukhortova, Yulia R.
AU - Pariy, Igor
AU - Wagner, Dmitriy V.
AU - Laktionov, Pavel P.
AU - Chernonosova, Vera S.
AU - Chelobanov, Boris P.
AU - Chernozem, Roman V.
AU - Surmeneva, Maria A.
AU - Kholkin, Andrei L.
AU - Surmenev, Roman A.
N1 - Funding Information:
Funding: The financial support from the Ministry of Science and Higher Education of the Russian Federation is acknowledged (grant agreement #075-15-2021-588 from 1.06.2021). The research was carried out at Tomsk Polytechnic University within the framework of Tomsk Polytechnic University development program (infrastructural support). Part of this work was developed within the scope of the project CICECO-Aveiro Institute of Materials, UIDB/50011/2020 & UIDP/50011/2020, financed by national funds through the Portuguese Foundation for Science and Technology/MCTE. SEM study was funded by the Russian State-funded budget project of ICBFM SB RAS number 121031300042-1.
Publisher Copyright:
© 2022 by the authors. Licensee MDPI, Basel, Switzerland.
PY - 2022/2
Y1 - 2022/2
N2 - Novel hybrid magnetoactive composite scaffolds based on poly(3-hydroxybutyrate) (PHB), gelatin, and magnetite (Fe3O4) were fabricated by electrospinning. The morphology, struc-ture, phase composition, and magnetic properties of composite scaffolds were studied. Fabrication procedures of PHB/gelatin and PHB/gelatin/Fe3O4 scaffolds resulted in the formation of both core-shell and ribbon-shaped structure of the fibers. In case of hybrid PHB/gelatin/Fe3O4 scaffolds sub-micron-sized Fe3O4 particles were observed in the surface layers of the fibers. The X-ray photoelec-tron spectroscopy results allowed the presence of gelatin on the fiber surface (N/C ratio–0.11) to be revealed. Incubation of the composite scaffolds in saline for 3 h decreased the amount of gelatin on the surface by more than ~75%. The differential scanning calorimetry results obtained for pure PHB scaffolds revealed a characteristic melting peak at 177.5 °C. The presence of gelatin in PHB/gelatin and PHB/gelatin/Fe3O4 scaffolds resulted in the decrease in melting temperature to 168–169 °C in comparison with pure PHB scaffolds due to the core-shell structure of the fibers. Hybrid scaffolds also demonstrated a decrease in crystallinity from 52.3% (PHB) to 16.9% (PHB/gelatin) and 9.2% (PHB/gelatin/Fe3O4). All the prepared scaffolds were non-toxic and saturation magnetization of the composite scaffolds with magnetite was 3.27 ± 0.22 emu/g, which makes them prospective candi-dates for usage in biomedical applications.
AB - Novel hybrid magnetoactive composite scaffolds based on poly(3-hydroxybutyrate) (PHB), gelatin, and magnetite (Fe3O4) were fabricated by electrospinning. The morphology, struc-ture, phase composition, and magnetic properties of composite scaffolds were studied. Fabrication procedures of PHB/gelatin and PHB/gelatin/Fe3O4 scaffolds resulted in the formation of both core-shell and ribbon-shaped structure of the fibers. In case of hybrid PHB/gelatin/Fe3O4 scaffolds sub-micron-sized Fe3O4 particles were observed in the surface layers of the fibers. The X-ray photoelec-tron spectroscopy results allowed the presence of gelatin on the fiber surface (N/C ratio–0.11) to be revealed. Incubation of the composite scaffolds in saline for 3 h decreased the amount of gelatin on the surface by more than ~75%. The differential scanning calorimetry results obtained for pure PHB scaffolds revealed a characteristic melting peak at 177.5 °C. The presence of gelatin in PHB/gelatin and PHB/gelatin/Fe3O4 scaffolds resulted in the decrease in melting temperature to 168–169 °C in comparison with pure PHB scaffolds due to the core-shell structure of the fibers. Hybrid scaffolds also demonstrated a decrease in crystallinity from 52.3% (PHB) to 16.9% (PHB/gelatin) and 9.2% (PHB/gelatin/Fe3O4). All the prepared scaffolds were non-toxic and saturation magnetization of the composite scaffolds with magnetite was 3.27 ± 0.22 emu/g, which makes them prospective candi-dates for usage in biomedical applications.
KW - Composite
KW - Core-shell structure
KW - Magnetite
KW - Magnetoactive scaffold
KW - Poly-3-hydroxybutyrate
UR - http://www.scopus.com/inward/record.url?scp=85123458116&partnerID=8YFLogxK
UR - https://www.mendeley.com/catalogue/58ba65c2-6046-3a5a-b8a2-708a80b77415/
U2 - 10.3390/polym14030529
DO - 10.3390/polym14030529
M3 - Article
C2 - 35160518
AN - SCOPUS:85123458116
VL - 14
JO - Polymers
JF - Polymers
SN - 2073-4360
IS - 3
M1 - 529
ER -