Analysis of PLA composite filaments reinforced with lignin and polymerised-lignin-treated NFC

Gregor-Svetec, Diana (avtor), Leskovšek, Mirjam (avtor), Leskovar, Blaž (avtor), Stanković Elesini, Urška (avtor), Vrabič Brodnjak, Urška (avtor)

Polylactic acid (PLA) is one of the most suitable materials for 3D printing. Blending with nanoparticles improves some of its properties, broadening its application possibilities. The article presents a study of composite PLA matrix filaments with added unmodified and lignin/polymerised lignin surface-modified nanofibrillated cellulose (NFC). The influence of untreated and surfacemodified NFC on morphological, mechanical, technological, infrared spectroscopic, and dynamic mechanical properties was evaluated for different groups of samples. As determined by the stereo and scanning electron microscopy, the unmodified and surface-modified NFCs with lignin and polymerised lignin were present in the form of plate-shaped agglomerates. The addition of NFC slightly reduced the filaments’ tensile strength, stretchability, and ability to absorb energy, while in contrast, the initial modulus slightly improved. By adding NFC to the PLA matrix, the bending storage modulus (E’) decreased slightly at lower temperatures, especially in the PLA samples with 3 wt% and 5 wt% NFC. When NFC was modified with lignin and polymerised lignin, an increase in E’ was noticed, especially in the glassy state.

• Jezik: Angleški jezik
• Ključne besede: polymer composites, nanofibrillated cellulose, lignin, polymerised lignin, agglomeration
• Vrsta gradiva: Članek v reviji
• Tipologija: 1.01 - Izvirni znanstveni članek
• Organizacija: NTF - Naravoslovnotehniška fakulteta
• Status publikacije: Objavljeno
• Različica publikacije: Objavljena publikacija
• Leto izida: 2021
• Št. strani: 24 str.
• Številčenje: Vol. 13, iss. 13, art. 2174
• PID: 20.500.12556/RUL-135627
• UDK: 677
• ISSN pri članku: 2073-4360
• DOI: 10.3390/polym13132174
• COBISS.SI-ID: 69691651
• Datum objave v RUL: 22.03.2022

Gradivo je del revije

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

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.
• Začetek licenciranja: 01.07.2021

Sekundarni jezik

• Jezik: Slovenski jezik
• Ključne besede: polimerni kompoziti, nanofibrilirana celuloza, lignin, polimerizirani lignin, strnjevanje

Projekti

• Financer: EC - European Commission
• Program financ.: EU Structural Funds, Potential of biomass for development of advanced materials and bio-based products
• Naslov: Discarded potentials of biomass
• Akronim: Cel.Cycle

• Financer: ARRS - Agencija za raziskovalno dejavnost Republike Slovenije
• Številka projekta: P2-0213
• Naslov: Tekstilije in ekologija