Development of New Cellulosic Fibers and Composites Using Ionic Liquid Technology

Hermanutz, Frank; Vocht, Marc P.; Buchmeiser, Michael R.

doi:10.1007/978-3-030-35245-5_10

Cited by 7 publications

(14 citation statements)

References 161 publications

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“…properties such as high tenacity (up to 50 cN/tex) at high modulus values (2000-2500 cN/tex). 6,8 Herein, our latest research findings in the wet and dry-wet spinning of chitin/cellulose composite fibers are presented. Multifilament cellulose/chitin fibers were continuously spun both via wet and dry-wet spinning and showed excellent water retention capacities and filament tenacities allowing the preparation of non-woven, knitted fabrics and yarns.…”

Section: Cellulosic Fibers Spun By This Technique Revealed Excellent mentioning

confidence: 99%

“…This has a strong influence on the mechanical properties as a higher orientation of the crystallites is achieved. Cellulosic fibers spun by this technique revealed excellent mechanical properties such as high tenacity (up to 50 cN/tex) at high modulus values (2000‐2500 cN/tex) 6,8 . Herein, our latest research findings in the wet and dry‐wet spinning of chitin/cellulose composite fibers are presented.…”

Section: Introductionmentioning

confidence: 97%

“…By contrast, the ionic liquid (IL) based direct dissolution approach provides a novel technology to manufacture cellulose-based fibers with superior properties. 6 ILs were applied as direct cellulose solvent without using any auxiliaries for the first time in 2002 by Swatloski et al 7 In view of the low volatility and low toxicity of the ILs used, the IL-technology is a promising, environmentally friendly alternative to both the viscose and lyocell process. 8 Moreover, ILs can also dissolve other biopolymers, such as chitin, 9 lignin, 10 and keratin.…”

Section: Introductionmentioning

confidence: 99%

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Chitin/cellulose blend fibers prepared by wet and dry‐wet spinning

Ota

Beyer

Hageroth

et al. 2020

Polymers for Advanced Techs

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We describe the wet and dry-wet spinning of multifilament cellulosic composite fibers, namely chitin/cellulose fibers. The direct solution process for the two biopolymers based on an ionic liquid as solvent represents an environmentally friendly and alternative technology to the industrially applied viscose and lyocell process. Both cellulose and chitin possess good solubility in 1-ethyl-3-methylimidazolium propionate ([C 2 C 1 Im][OPr]) and were spun into multifilament composite fibers. Moreover, for the first time, pure chitin multifilament fibers were obtained by dry-wet spinning. The effect of chitin addition on the filament properties was investigated and evaluated by microscopic, spectroscopic, and mechanical analyses.

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Section: Cellulosic Fibers Spun By This Technique Revealed Excellent mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 97%

Section: Introductionmentioning

confidence: 99%

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Chitin/cellulose blend fibers prepared by wet and dry‐wet spinning

Ota

Beyer

Hageroth

et al. 2020

Polymers for Advanced Techs

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“…Due to the disadvantages of the established processes, recent efforts focused on new technologies for MMCF production (Hermanutz et al 2020). Within this context, the use of N,N-dimethylacetamide (DMAc) in combination with LiCl as a possible solvent medium was considered, as it allows for high cellulose concentrations of up to 16 wt.% and recovery of the solvent (Sayyed et al 2019).…”

Section: Introductionmentioning

confidence: 99%

“…process speed and use of multihole spinnerets. Among many approaches, ionic liquid (IL) technology is amongst the most promising (El Seoud et al 2020;Hermanutz et al 2020;Isik et al 2014;Sayyed et al 2019;Sun et al 2011;Wang et al 2012;Zhang et al 2017a). Like NMMO and DMAc/ LiCl, ILs are direct solvents for cellulose.…”

Section: Introductionmentioning

confidence: 99%

High-performance cellulosic filament fibers prepared via dry-jet wet spinning from ionic liquids

et al. 2021

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We report on a new process for the spinning of high-performance cellulosic fibers. For the first time, cellulose has been dissolved in the ionic liquid (IL) 1-ethyl-3-methylimidazolium octanoate ([C2C1im][Oc]) via a thin film evaporator in a continuous process. Compared to other ILs, [C2C1im][Oc] shows no signs of hydrolysis with water. For dope preparation the degree of polymerization of the pulp was adjusted by electron beam irradiation and determined by viscosimetry. In addition, the quality of the pulp was evaluated by means of alkali resistance. Endless filament fibers have been spun using dry-jet wet spinning and an extruder instead of a spinning pump, which significantly increases productivity. By this approach, more than 1000 m of continuous multifilament fibers have been spun. The novel approach allows for preparing cellulose fibers with high Young's modulus (33 GPa) and unprecedented high tensile strengths up to 45 cN/tex. The high performance of the obtained fibers provides a promising outlook for their application as replacement material for rayon-based tire cord fibers.

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Ring‐Opening Metathesis Polymerization‐Derived Poly(dicyclopentadiene)/Fiber Composites Using Latent Pre‐Catalysts

Kordes,

Mourgas,

Steinmann

et al. 2024

Macro Materials & Eng

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The preparation of basalt and S‐glass fiber‐reinforced poly(dicyclopentadiene) via ring‐opening metathesis polymerization using a thermally latent pre‐catalyst, that is, Mo(N‐3,5‐Me2‐C6H3)(= CH‐(2‐MeO‐C6H4))(IMes)(OTf)2 (1, IMes = 1,3‐dimesitylimidazol‐2‐ylidene; OTf = SO3CF3) is reported. Complementarily, the non‐latent first‐generation Grubbs initiator RuCl2(PPh3)2(CHPh) (2) is used. 2 can be rendered latent by the addition of ppm amounts of triphenylphosphine (PPh3). Both 1 and 2/PPh3 allow the realization of thermally latent single‐component systems with sufficient pot life that do not require pre‐mixing of the individual components shortly before use. The prepared fiber matrix composites are characterized in terms of mechanical, thermal, and chemical stability.

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Development of New Cellulosic Fibers and Composites Using Ionic Liquid Technology

Cited by 7 publications

References 161 publications

Chitin/cellulose blend fibers prepared by wet and dry‐wet spinning

Chitin/cellulose blend fibers prepared by wet and dry‐wet spinning

High-performance cellulosic filament fibers prepared via dry-jet wet spinning from ionic liquids

Ring‐Opening Metathesis Polymerization‐Derived Poly(dicyclopentadiene)/Fiber Composites Using Latent Pre‐Catalysts

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