TY  - JOUR
AU  - Sknepnek, Aleksandra
AU  - Filipović, Suzana
AU  - Pavlović, Vladimir B.
AU  - Mirković, Nemanja
AU  - Miletić, Dunja
AU  - Gržetić, Jelena
AU  - Mirković, Miljana M.
PY  - 2024
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/12793
AB  - Bacterial cellulose (BC) is a highly pure polysaccharide biopolymer that can be produced by various bacterial genera. Even though BC lacks functional properties, its porosity, three-dimensional network, and high specific surface area make it a suitable carrier for functional composite materials. In the present study, BC-producing bacteria were isolated from kombucha beverage and identified using a molecular method. Two sets of the BC hydrogels were produced in static conditions after four and seven days. Afterwards, two different synthesis pathways were applied for BC functionalization. The first method implied the incorporation of previously synthesized HAp/TiO2 nanocomposite using an immersion technique, while the second method included the functionalization of BC during the synthesis of HAp/TiO2 nanocomposite in the reaction mixture. The primary goal was to find the best method to obtain the functionalized material. Physicochemical and microstructural properties were analyzed by SEM, EDS, FTIR, and XRD methods. Further properties were examined by tensile test and thermogravimetric analysis, and antimicrobial activity was assessed by a total plate count assay. The results showed that HAp/TiO2 was successfully incorporated into the produced BC hydrogels using both methods. The applied methods of incorporation influenced the differences in morphology, phase distribution, mechanical and thermal properties, and antimicrobial activity against Staphylococcus aureus (ATCC 25923), Escherichia coli (ATCC 25922), Proteus mirabilis (ATCC 12453), and Candida albicans (ATCC 10231). Composite material can be recommended for further development and application in environments that are suitable for diseases spreading.
T2  - Polymers
T1  - Effects of Synthesis Parameters on Structure and Antimicrobial Properties of Bacterial Cellulose/Hydroxyapatite/TiO2 Polymer–Ceramic Composite Material
VL  - 16
IS  - 4
SP  - 470
DO  - 10.3390/polym16040470
ER  - 

@article{
author = "Sknepnek, Aleksandra and Filipović, Suzana and Pavlović, Vladimir B. and Mirković, Nemanja and Miletić, Dunja and Gržetić, Jelena and Mirković, Miljana M.",
year = "2024",
abstract = "Bacterial cellulose (BC) is a highly pure polysaccharide biopolymer that can be produced by various bacterial genera. Even though BC lacks functional properties, its porosity, three-dimensional network, and high specific surface area make it a suitable carrier for functional composite materials. In the present study, BC-producing bacteria were isolated from kombucha beverage and identified using a molecular method. Two sets of the BC hydrogels were produced in static conditions after four and seven days. Afterwards, two different synthesis pathways were applied for BC functionalization. The first method implied the incorporation of previously synthesized HAp/TiO2 nanocomposite using an immersion technique, while the second method included the functionalization of BC during the synthesis of HAp/TiO2 nanocomposite in the reaction mixture. The primary goal was to find the best method to obtain the functionalized material. Physicochemical and microstructural properties were analyzed by SEM, EDS, FTIR, and XRD methods. Further properties were examined by tensile test and thermogravimetric analysis, and antimicrobial activity was assessed by a total plate count assay. The results showed that HAp/TiO2 was successfully incorporated into the produced BC hydrogels using both methods. The applied methods of incorporation influenced the differences in morphology, phase distribution, mechanical and thermal properties, and antimicrobial activity against Staphylococcus aureus (ATCC 25923), Escherichia coli (ATCC 25922), Proteus mirabilis (ATCC 12453), and Candida albicans (ATCC 10231). Composite material can be recommended for further development and application in environments that are suitable for diseases spreading.",
journal = "Polymers",
title = "Effects of Synthesis Parameters on Structure and Antimicrobial Properties of Bacterial Cellulose/Hydroxyapatite/TiO2 Polymer–Ceramic Composite Material",
volume = "16",
number = "4",
pages = "470",
doi = "10.3390/polym16040470"
}

Sknepnek, A., Filipović, S., Pavlović, V. B., Mirković, N., Miletić, D., Gržetić, J.,& Mirković, M. M.. (2024). Effects of Synthesis Parameters on Structure and Antimicrobial Properties of Bacterial Cellulose/Hydroxyapatite/TiO2 Polymer–Ceramic Composite Material. in Polymers, 16(4), 470.
https://doi.org/10.3390/polym16040470

Sknepnek A, Filipović S, Pavlović VB, Mirković N, Miletić D, Gržetić J, Mirković MM. Effects of Synthesis Parameters on Structure and Antimicrobial Properties of Bacterial Cellulose/Hydroxyapatite/TiO2 Polymer–Ceramic Composite Material. in Polymers. 2024;16(4):470.
doi:10.3390/polym16040470 .

Sknepnek, Aleksandra, Filipović, Suzana, Pavlović, Vladimir B., Mirković, Nemanja, Miletić, Dunja, Gržetić, Jelena, Mirković, Miljana M., "Effects of Synthesis Parameters on Structure and Antimicrobial Properties of Bacterial Cellulose/Hydroxyapatite/TiO2 Polymer–Ceramic Composite Material" in Polymers, 16, no. 4 (2024):470,
https://doi.org/10.3390/polym16040470 . .

TY  - CONF
AU  - Mirković, Miljana
AU  - Sknepnek, Aleksandra
AU  - Miletić, Dunja
AU  - Pavlović, Vladimir
AU  - Đukić, Dunja
AU  - Šuljagić, Marija
AU  - Anđelković, Ljubica
PY  - 2023
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/11744
AB  - Hydroxyapatite Ca10(PO4)6(OH)2 - HAp presents natural construction material for bones and teeth and therefore is considered biocompatible, and has various applications in fields such as biomedicine, drug delivery, and as a biomarker. Considering nanoceramics' high specific surface area and antimicrobial activity, they can be used as potential antimicrobial materials. Bacterial cellulose (BC) is a biopolymer that stands out in its biodegradability, biocompatibility, and high water retention capacity, but also lacks functional properties. The main goal of this study is to create a newly designed composite material with the functionalization of cellulose by hydroxyapatite with antimicrobial properties. Hydroxyapatite material was incorporated in wet cellulose during the precipitation synthesis reaction. Obtained BC-HAp material was structurally and phase investigated by the XRD method. The morphology of obtained material was done by SEM, and appropriate functional groups were determined by the FTIR method. According to antimicrobial results investigated composite is shown proper antimicrobial activity.
PB  - Novi Sad : Faculty of Technology, University of Novi Sad
C3  - CYSC-2023 : 15th EcerS Conference for Young Scientists in Ceramics, programme and book of abstracts; Oct 11-14, Novi Sad
T1  - Synthesis and characterization of cellulosehydroxyapatite composite material with proper antimicrobial properties
SP  - 70
EP  - 70
UR  - https://hdl.handle.net/21.15107/rcub_vinar_11744
ER  - 

@conference{
author = "Mirković, Miljana and Sknepnek, Aleksandra and Miletić, Dunja and Pavlović, Vladimir and Đukić, Dunja and Šuljagić, Marija and Anđelković, Ljubica",
year = "2023",
abstract = "Hydroxyapatite Ca10(PO4)6(OH)2 - HAp presents natural construction material for bones and teeth and therefore is considered biocompatible, and has various applications in fields such as biomedicine, drug delivery, and as a biomarker. Considering nanoceramics' high specific surface area and antimicrobial activity, they can be used as potential antimicrobial materials. Bacterial cellulose (BC) is a biopolymer that stands out in its biodegradability, biocompatibility, and high water retention capacity, but also lacks functional properties. The main goal of this study is to create a newly designed composite material with the functionalization of cellulose by hydroxyapatite with antimicrobial properties. Hydroxyapatite material was incorporated in wet cellulose during the precipitation synthesis reaction. Obtained BC-HAp material was structurally and phase investigated by the XRD method. The morphology of obtained material was done by SEM, and appropriate functional groups were determined by the FTIR method. According to antimicrobial results investigated composite is shown proper antimicrobial activity.",
publisher = "Novi Sad : Faculty of Technology, University of Novi Sad",
journal = "CYSC-2023 : 15th EcerS Conference for Young Scientists in Ceramics, programme and book of abstracts; Oct 11-14, Novi Sad",
title = "Synthesis and characterization of cellulosehydroxyapatite composite material with proper antimicrobial properties",
pages = "70-70",
url = "https://hdl.handle.net/21.15107/rcub_vinar_11744"
}

Mirković, M., Sknepnek, A., Miletić, D., Pavlović, V., Đukić, D., Šuljagić, M.,& Anđelković, L.. (2023). Synthesis and characterization of cellulosehydroxyapatite composite material with proper antimicrobial properties. in CYSC-2023 : 15th EcerS Conference for Young Scientists in Ceramics, programme and book of abstracts; Oct 11-14, Novi Sad
Novi Sad : Faculty of Technology, University of Novi Sad., 70-70.
https://hdl.handle.net/21.15107/rcub_vinar_11744

Mirković M, Sknepnek A, Miletić D, Pavlović V, Đukić D, Šuljagić M, Anđelković L. Synthesis and characterization of cellulosehydroxyapatite composite material with proper antimicrobial properties. in CYSC-2023 : 15th EcerS Conference for Young Scientists in Ceramics, programme and book of abstracts; Oct 11-14, Novi Sad. 2023;:70-70.
https://hdl.handle.net/21.15107/rcub_vinar_11744 .

Mirković, Miljana, Sknepnek, Aleksandra, Miletić, Dunja, Pavlović, Vladimir, Đukić, Dunja, Šuljagić, Marija, Anđelković, Ljubica, "Synthesis and characterization of cellulosehydroxyapatite composite material with proper antimicrobial properties" in CYSC-2023 : 15th EcerS Conference for Young Scientists in Ceramics, programme and book of abstracts; Oct 11-14, Novi Sad (2023):70-70,
https://hdl.handle.net/21.15107/rcub_vinar_11744 .

TY  - JOUR
AU  - Janićijević, Aleksandra
AU  - Filipović, Suzana
AU  - Sknepnek, Aleksandra
AU  - Vlahović, Branislav
AU  - Đorđević, Nenad
AU  - Kovacević, Danijela
AU  - Mirković, Miljana
AU  - Petronijević, Ivan
AU  - Zivković, Predrag
AU  - Rogan, Jelena
AU  - Pavlović, Vladimir B.
PY  - 2023
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/11872
AB  - In the search for environmentally friendly materials with a wide range of properties, polymer composites have emerged as a promising alternative due to their multifunctional properties. This study focuses on the synthesis of composite materials consisting of four components: bacterial nanocellulose (BNC) modified with magnetic Fe3O4 , and a mixture of BaTiO3 (BT) and polyvinylidene fluoride (PVDF). The BT powder was mechanically activated prior to mixing with PVDF. The influence of BT mechanical activation and BNC with magnetic particles on the PVDF matrix was investigated. The obtained composite films’ structural characteristics, morphology, and dielectric properties are presented. This research provides insights into the relationship between mechanical activation of the filler and structural and dielectric properties in the PVDF/BT/BNC/Fe3O4 system, creating the way for the development of materials with a wide range of diverse properties that support the concept of green technologies.
T2  - Polymers
T1  - Dielectric and Structural Properties of the Hybrid Material Polyvinylidene Fluoride-Bacterial Nanocellulose-Based Composite
VL  - 15
IS  - 20
SP  - 4080
DO  - 10.3390/polym15204080
ER  - 

@article{
author = "Janićijević, Aleksandra and Filipović, Suzana and Sknepnek, Aleksandra and Vlahović, Branislav and Đorđević, Nenad and Kovacević, Danijela and Mirković, Miljana and Petronijević, Ivan and Zivković, Predrag and Rogan, Jelena and Pavlović, Vladimir B.",
year = "2023",
abstract = "In the search for environmentally friendly materials with a wide range of properties, polymer composites have emerged as a promising alternative due to their multifunctional properties. This study focuses on the synthesis of composite materials consisting of four components: bacterial nanocellulose (BNC) modified with magnetic Fe3O4 , and a mixture of BaTiO3 (BT) and polyvinylidene fluoride (PVDF). The BT powder was mechanically activated prior to mixing with PVDF. The influence of BT mechanical activation and BNC with magnetic particles on the PVDF matrix was investigated. The obtained composite films’ structural characteristics, morphology, and dielectric properties are presented. This research provides insights into the relationship between mechanical activation of the filler and structural and dielectric properties in the PVDF/BT/BNC/Fe3O4 system, creating the way for the development of materials with a wide range of diverse properties that support the concept of green technologies.",
journal = "Polymers",
title = "Dielectric and Structural Properties of the Hybrid Material Polyvinylidene Fluoride-Bacterial Nanocellulose-Based Composite",
volume = "15",
number = "20",
pages = "4080",
doi = "10.3390/polym15204080"
}

Janićijević, A., Filipović, S., Sknepnek, A., Vlahović, B., Đorđević, N., Kovacević, D., Mirković, M., Petronijević, I., Zivković, P., Rogan, J.,& Pavlović, V. B.. (2023). Dielectric and Structural Properties of the Hybrid Material Polyvinylidene Fluoride-Bacterial Nanocellulose-Based Composite. in Polymers, 15(20), 4080.
https://doi.org/10.3390/polym15204080

Janićijević A, Filipović S, Sknepnek A, Vlahović B, Đorđević N, Kovacević D, Mirković M, Petronijević I, Zivković P, Rogan J, Pavlović VB. Dielectric and Structural Properties of the Hybrid Material Polyvinylidene Fluoride-Bacterial Nanocellulose-Based Composite. in Polymers. 2023;15(20):4080.
doi:10.3390/polym15204080 .

Janićijević, Aleksandra, Filipović, Suzana, Sknepnek, Aleksandra, Vlahović, Branislav, Đorđević, Nenad, Kovacević, Danijela, Mirković, Miljana, Petronijević, Ivan, Zivković, Predrag, Rogan, Jelena, Pavlović, Vladimir B., "Dielectric and Structural Properties of the Hybrid Material Polyvinylidene Fluoride-Bacterial Nanocellulose-Based Composite" in Polymers, 15, no. 20 (2023):4080,
https://doi.org/10.3390/polym15204080 . .