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Naslov:Kraft lignin/tannin as a potential accelerator of antioxidant and antibacterial properties in an active thermoplastic polyester-based multifunctional material
Avtorji:ID Pušnik Črešnar, Klementina (Avtor)
ID Zamboulis, Alexandra (Avtor)
ID Bikiaris, Dimitrios (Avtor)
ID Aulova, Alexandra (Avtor)
ID Fras Zemljič, Lidija (Avtor)
Datoteke:.pdf Kraft_Lignin_Tannin_as_a_Potentia-Cresnar-2022.pdf (3,87 MB)
MD5: C2A94CE5A61CFA85C422135DBB2E0A39
 
URL https://www.mdpi.com/2073-4360/14/8/1532
 
Jezik:Angleški jezik
Vrsta gradiva:Znanstveno delo
Tipologija:1.01 - Izvirni znanstveni članek
Organizacija:FS - Fakulteta za strojništvo
Opis:This research focuses on key priorities in the field of sustainable plastic composites that will lead to a reduction in CO2 pollution and support the EU’s goal of becoming carbon neutral by 2050. The main challenge is to develop high-performance polyphenol-reinforced thermoplastic composites, where the use of natural fillers replaces the usual chemical additives with non-toxic ones, not only to improve the final performance but also to increase the desired multifunctionalities (structural, antioxidant, and antibacterial). Therefore, poly (lactic acid) (PLA) composites based on Kraft lignin (KL) and tannin (TANN) were investigated. Two series of PLA composites, PLA-KL and PLA-TANN, which contained natural fillers (0.5%, 1.0%, and 2.5% (w/w)) were prepared by hot melt extrusion. The effects of KL and TANN on the PLA matrices were investigated, especially the surface physicochemical properties, mechanical properties, and antioxidant/antimicrobial activity. The surface physicochemical properties were evaluated by measuring the contact angle (CA), roughness, zeta potential, and nanoindentation. The results of the water contact angle showed that neither KL nor TANN caused a significant change in the wettability, but only a slight increase in the hydrophilicity of the PLA composites. The filler loading, the size of the particles with their available functional groups on the surfaces of the PLA composites, and the interaction between the filler and the PLA polymer depend on the roughness and zeta potential behavior of the PLA-KL and PLA-TANN composites and ultimately improve the surface mechanical properties. The antioxidant properties of the PLA-KL and PLA-TANN composites were determined using the DPPH (2,2′-diphenyl-1-picrylhydrazyl) test. The results show an efficient antioxidant behavior of all PLA-KL and PLA-TANN composites, which increases with the filler content. Finally, the KL- and PLA-based TANN have shown resistance to the Gram-negative bacteria, E. coli, but without a correlation trend between polyphenol filler content and structure.
Ključne besede:poly (lactic acid), Kraft lignin, tannin, multifunctionality of PLA composites, surface mechanical properties, antioxidant/antibacterial activity
Status publikacije:Objavljeno
Verzija publikacije:Objavljena publikacija
Datum objave:01.04.2022
Založnik:MDPI
Leto izida:2022
Št. strani:18 str.
Številčenje:Letn. 14, Št. 8, št. članka 1532
PID:20.500.12556/DKUM-85902 Novo okno
UDK:677.017:539.2
COBISS.SI-ID:104505603 Novo okno
DOI:10.3390/polym14081532 Novo okno
ISSN pri članku:2073-4360
Datum objave v DKUM:18.09.2023
Število ogledov:451
Število prenosov:17
Metapodatki:XML RDF-CHPDL DC-XML DC-RDF
Področja:Ostalo
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Skupna ocena:(0 glasov)
Vaša ocena:Ocenjevanje je dovoljeno samo prijavljenim uporabnikom.
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Gradivo je del revije

Naslov:Polymers
Skrajšan naslov:Polymers
Založnik:Molecular Diversity Preservation International
ISSN:2073-4360
COBISS.SI-ID:517951257 Novo okno

Gradivo je financirano iz projekta

Financer:Drugi - Drug financer ali več financerjev
Številka projekta:OP20.04343

Financer:ARRS - Agencija za raziskovalno dejavnost Republike Slovenije
Številka projekta:P2-0118
Naslov:Tekstilna kemija in napredni tekstilni materiali

Financer:ARRS - Agencija za raziskovalno dejavnost Republike Slovenije
Številka projekta:P2-0264
Naslov:Trajnostni Polimerni materiali in Tehnologije

Financer:ARRS - Agencija za raziskovalno dejavnost Republike Slovenije
Številka projekta:J2-9443
Naslov:Reološko obnašanje in mehanske lastnosti pri procesiranju polimernih sistemov z visoko koncentracijo trdnih delcev

Financer:Drugi - Drug financer ali več financerjev
Številka projekta:2020-00792

Licence

Licenca:CC BY 4.0, Creative Commons Priznanje avtorstva 4.0 Mednarodna
Povezava:http://creativecommons.org/licenses/by/4.0/deed.sl
Opis:To je standardna licenca Creative Commons, ki daje uporabnikom največ možnosti za nadaljnjo uporabo dela, pri čemer morajo navesti avtorja.

Sekundarni jezik

Jezik:Slovenski jezik
Ključne besede:večnamenskost PLA kompozitov, tanin, površinske mehanske lastnosti, antioksidativno/antibakterijsko delovanje


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