Daniele Rigotti (Avtor), Giulia Fredi (Avtor), Davide Perin (Avtor), Dimitrios N. Bikiaris (Avtor), Alessandro Pegoretti (Avtor), Andrea Dorigato (Avtor)

Povzetek

Drawing is a well-established method to improve the mechanical properties of wet-spun fibers, as it orients the polymer chains, increases the chain density, and homogenizes the microstructure. This work aims to investigate how drawing variables, such as the draw ratio, drawing speed, and temperature affect the elastic modulus (E) and the strain at break (εB) of biobased wet-spun fibers constituted by neat polylactic acid (PLA) and a PLA/poly(dodecamethylene 2,5-furandicarboxylate) (PDoF) (80/20 wt/wt) blend. Drawing experiments were conducted with a design of experiment (DOE) approach following a 24 full factorial design. The results of the quasi-static tensile tests on the drawn fibers, analyzed by the analysis of variance (ANOVA) and modeled through the response surface methodology (RSM), highlight that the presence of PDoF significantly lowers E, which instead is maximized if the temperature and draw ratio are both low. On the other hand, εB is enhanced when the drawing is performed at a high temperature. Finally, a genetic algorithm was implemented to find the optimal combination of drawing parameters that maximize both E and εB. The resulting Pareto curve highlights that the temperature influences the mechanical results only for neat PLA fibers, as the stiffness increases by drawing at lower temperatures, while optimal Pareto points for PLA/PDoF fibers are mainly determined by the draw ratio and the draw rate.

Ključne besede

vlakna;furanoatni poliestri;risanje;metoda odzivnih površin;genetski algoritmi;fibers;poly(lactic acid);furanoate polyesters;drawing;response surface methodology;genetic algorithms;

Podatki

Jezik: Angleški jezik
Leto izida:
Tipologija: 1.01 - Izvirni znanstveni članek
Organizacija: UM FS - Fakulteta za strojništvo
Založnik: MDPI AG
UDK: 543.2:004.8
COBISS: 107003907 Povezava se bo odprla v novem oknu
ISSN: 2073-4360
Št. ogledov: 0
Št. prenosov: 2
Ocena: 0 (0 glasov)
Metapodatki: JSON JSON-RDF JSON-LD TURTLE N-TRIPLES XML RDFA MICRODATA DC-XML DC-RDF RDF

Ostali podatki

Sekundarni jezik: Slovenski jezik
Sekundarne ključne besede: vlakna;furanoatni poliestri;risanje;metoda odzivnih površin;genetski algoritmi;
Vrsta dela (COBISS): Članek v reviji
Strani: 13 str.
Letnik: ǂVol. ǂ14
Zvezek: ǂiss. ǂ3 (396)
Čas izdaje: Jan. 2022
DOI: 10.3390/polym14030396
ID: 26101867