Optimization of Dry-Jet Wet Spinning of Regenerated Cellulose Fibers Using [mTBDH][OAc] as a Solvent

Wenwen Fang; E Yee Lim; Kaarlo Nieminen; Herbert Sixta

doi:10.1021/acsomega.3c05133

Optimization of Dry-Jet Wet Spinning of Regenerated Cellulose Fibers Using [mTBDH][OAc] as a Solvent

Wenwen Fang^*, E Yee Lim, Kaarlo Nieminen, Herbert Sixta^*

^*Corresponding author for this work

Research output: Contribution to journal › Article › Scientific › peer-review

4 Citations (Scopus)

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Abstract

Superbase-based ionic liquids (ILs) have demonstrated excellent dissolution capability for cellulose, and employing the dry-jet wet spinning process, high-tenacity regenerated textile fibers have been made. Among a range of superbase-based ILs, [mTBDH][OAc] exhibited not only good spinnability but also exceptional recyclability, making it highly suitable for a closed-loop production of regenerated cellulose fibers. To further optimize the spinning process, we investigated the influence of the cellulosic raw materials and the IL with residual water on spinnability and fiber properties. In addition, single-filament spinning and multifilament spinning using spinnerets with different hole densities were investigated to reveal the upscaling challenges of the dry-jet wet spinning process. The air gap conditions, for example, temperature and moisture concentration were simulated using COMSOL multiphysics. The results indicate that the presence of a small amount of water (3 wt%) in the IL has a positive effect on spinnability, while the mechanical properties of the fibers remain unchanged.

Original language	English
Pages (from-to)	34103–34110
Journal	ACS Omega
Volume	8
Issue number	37
DOIs	https://doi.org/10.1021/acsomega.3c05133
Publication status	Published - 19 Sept 2023
MoE publication type	A1 Journal article-refereed

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CHEM_Fang_et_al_Optimization_of_Dry-Jet_2023_ACS_OmegaFinal published version, 4.69 MBLicence: CC BY

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title = "Optimization of Dry-Jet Wet Spinning of Regenerated Cellulose Fibers Using [mTBDH][OAc] as a Solvent",

abstract = "Superbase-based ionic liquids (ILs) have demonstrated excellent dissolution capability for cellulose, and employing the dry-jet wet spinning process, high-tenacity regenerated textile fibers have been made. Among a range of superbase-based ILs, [mTBDH][OAc] exhibited not only good spinnability but also exceptional recyclability, making it highly suitable for a closed-loop production of regenerated cellulose fibers. To further optimize the spinning process, we investigated the influence of the cellulosic raw materials and the IL with residual water on spinnability and fiber properties. In addition, single-filament spinning and multifilament spinning using spinnerets with different hole densities were investigated to reveal the upscaling challenges of the dry-jet wet spinning process. The air gap conditions, for example, temperature and moisture concentration were simulated using COMSOL multiphysics. The results indicate that the presence of a small amount of water (3 wt%) in the IL has a positive effect on spinnability, while the mechanical properties of the fibers remain unchanged.",

author = "Wenwen Fang and Lim, {E Yee} and Kaarlo Nieminen and Herbert Sixta",

note = "This project is funded by Academy of Finland Project WTF-Click-Nano 13311267. We express our gratitude for the provision of facilities and technical support by Aalto University at OtaNano–Nanomicroscopy Center (Aalto-NMC). In addition, we extend our thanks to Leena Pitk{\"a}nen and Quang L{\^e} Huy for their assistance with pulp analysis, as well as to Petri Uusi-Kyyny for discussions regarding the vapor–liquid equilibrium in the [mTBDH][OAc] and water system.",

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AU - Fang, Wenwen

AU - Lim, E Yee

AU - Nieminen, Kaarlo

AU - Sixta, Herbert

N1 - This project is funded by Academy of Finland Project WTF-Click-Nano 13311267. We express our gratitude for the provision of facilities and technical support by Aalto University at OtaNano–Nanomicroscopy Center (Aalto-NMC). In addition, we extend our thanks to Leena Pitkänen and Quang Lê Huy for their assistance with pulp analysis, as well as to Petri Uusi-Kyyny for discussions regarding the vapor–liquid equilibrium in the [mTBDH][OAc] and water system.

PY - 2023/9/19

Y1 - 2023/9/19

N2 - Superbase-based ionic liquids (ILs) have demonstrated excellent dissolution capability for cellulose, and employing the dry-jet wet spinning process, high-tenacity regenerated textile fibers have been made. Among a range of superbase-based ILs, [mTBDH][OAc] exhibited not only good spinnability but also exceptional recyclability, making it highly suitable for a closed-loop production of regenerated cellulose fibers. To further optimize the spinning process, we investigated the influence of the cellulosic raw materials and the IL with residual water on spinnability and fiber properties. In addition, single-filament spinning and multifilament spinning using spinnerets with different hole densities were investigated to reveal the upscaling challenges of the dry-jet wet spinning process. The air gap conditions, for example, temperature and moisture concentration were simulated using COMSOL multiphysics. The results indicate that the presence of a small amount of water (3 wt%) in the IL has a positive effect on spinnability, while the mechanical properties of the fibers remain unchanged.

AB - Superbase-based ionic liquids (ILs) have demonstrated excellent dissolution capability for cellulose, and employing the dry-jet wet spinning process, high-tenacity regenerated textile fibers have been made. Among a range of superbase-based ILs, [mTBDH][OAc] exhibited not only good spinnability but also exceptional recyclability, making it highly suitable for a closed-loop production of regenerated cellulose fibers. To further optimize the spinning process, we investigated the influence of the cellulosic raw materials and the IL with residual water on spinnability and fiber properties. In addition, single-filament spinning and multifilament spinning using spinnerets with different hole densities were investigated to reveal the upscaling challenges of the dry-jet wet spinning process. The air gap conditions, for example, temperature and moisture concentration were simulated using COMSOL multiphysics. The results indicate that the presence of a small amount of water (3 wt%) in the IL has a positive effect on spinnability, while the mechanical properties of the fibers remain unchanged.

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Optimization of Dry-Jet Wet Spinning of Regenerated Cellulose Fibers Using [mTBDH][OAc] as a Solvent

Abstract

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Nano: Water-free, Low-Cost Click Modification and Oxidative Regeneration of (Nano)Celluloses

OtaNano

OtaNano - Nanomicroscopy Center

Aalto University Reports Findings in Chemicals and Chemistry (Optimization of Dry-Jet Wet Spinning of Regenerated Cellulose Fibers Using [mTBDH][OAc] as a Solvent)

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Optimization of Dry-Jet Wet Spinning of Regenerated Cellulose Fibers Using [mTBDH][OAc] as a Solvent

Abstract

UN SDGs

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Other files and links

Fingerprint

Projects

Nano: Water-free, Low-Cost Click Modification and Oxidative Regeneration of (Nano)Celluloses

Equipment

OtaNano

OtaNano - Nanomicroscopy Center

Press/Media

Aalto University Reports Findings in Chemicals and Chemistry (Optimization of Dry-Jet Wet Spinning of Regenerated Cellulose Fibers Using [mTBDH][OAc] as a Solvent)

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