| Title: | Statistical modeling and optimization of the drawing process of bioderived polylactide/poly(dodecylene furanoate) wet-spun fibers |
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| Authors: | ID Rigotti, Daniele (Author)
ID Fredi, Giulia (Author)
ID Perin, Davide (Author)
ID Bikiaris, Dimitrios (Author)
ID Pegoretti, Alessandro (Author)
ID Dorigato, Andrea (Author) |
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| Files: |  polymers-14-00396.pdf (1,23 MB)
MD5: B30F9E9261B6ED84D7438E6DFD2D52D2
 https://www.mdpi.com/2073-4360/14/3/396
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| Language: | English |
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| Work type: | Article |
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| Typology: | 1.01 - Original Scientific Article |
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| Organization: | FS - Faculty of Mechanical Engineering
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| Abstract: | 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. |
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| Keywords: | fibers, poly(lactic acid), furanoate polyesters, drawing, response surface methodology, genetic algorithms |
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| Publication status: | Published |
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| Publication version: | Version of Record |
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| Submitted for review: | 30.11.2021 |
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| Article acceptance date: | 17.01.2022 |
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| Publication date: | 20.01.2022 |
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| Publisher: | MDPI AG |
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| Year of publishing: | 2022 |
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| Number of pages: | 13 str. |
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| Numbering: | Vol. 14, iss. 3 (396) |
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| PID: | 20.500.12556/DKUM-92247  |
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| UDC: | 543.2:004.8 |
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| ISSN on article: | 2073-4360 |
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| COBISS.SI-ID: | 107003907 |
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| DOI: | 10.3390/polym14030396 |
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| Copyright: | © 2022 by the authors |
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| Publication date in DKUM: | 24.03.2025 |
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| Views: | 190 |
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| Downloads: | 9 |
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| Metadata: |    |
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| Categories: | Misc.
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