Carbon fibers prepared from ionic liquid-derived cellulose precursors

Spörl, Johanna M.; Ota, Antje; Son, Sunghee; Massonne, Klemens; Hermanutz, Frank; Buchmeiser, Michael R.

doi:10.1016/j.mtcomm.2016.02.002

Cited by 40 publications

(25 citation statements)

References 45 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Chemically, ionic liquids are made of an organic cation and smaller, organic or inorganic anion [5], and the most interesting are the properties of room temperature ionic liquids (RTILs) [9]. The ability to dissolve cellulose in ionic liquids allows for a relatively simple processing of this polymer to obtain fibers [10][11][12][13][14][15][16], nanofibers [17][18][19] cellulose particles [20], cellulose gels and aerogels [21][22][23][24], flocs [25] and membranes.…”

Section: Introductionmentioning

confidence: 99%

Properties and Structure of Cellulosic Membranes Obtained from Solutions in Ionic Liquids Coagulated in Primary Alcohols

Fryczkowska

Kowalska

Biniaś

et al. 2018

Autex Research Journal

View full text Add to dashboard Cite

This paper presents the results of studies on the preparation of cellulosic membranes, from a solution in 1-ethyl-3- methylimidazolium acetate (EMIMAc), using the phase inversion method. Initially, the membranes were obtained by coagulation of the polymer film in water and primary alcohols (methanol, ethanol, 1-propanol, 1-butanol, 1-pentanol), 1-hexanol, 1-octanol) resulting in membranes with significantly differing morphologies. Subsequently, composite membranes were produced, with the support layer being a membrane with the largest pores, and the skin layer a membrane with smaller pores. The resulting membranes were tested for physicochemical and transport properties. The morphology of the membrane surfaces and their cross-sections were investigated by using a scanning electron microscope (SEM). The structure of the membranes, on the other hand, was investigated by FTIR spectroscopy and WAXS structural analysis.

show abstract

Section: Introductionmentioning

confidence: 99%

Properties and Structure of Cellulosic Membranes Obtained from Solutions in Ionic Liquids Coagulated in Primary Alcohols

Fryczkowska

Kowalska

Biniaś

et al. 2018

Autex Research Journal

View full text Add to dashboard Cite

show abstract

“…This is why the use of carbon composites is still restricted to high‐end applications, whether in aerospace or in the automotive sector. In search of alternative sources, which are preferably biobased, renewable, and not associated with the volatile market prices for crude oil, both cellulose and lignin have (again) moved into the center of interest. Particularly lignin appears to bear high potential for the production of CFs for the following reasons: first, lignins are highly abundant, 100% biobased, and renewable.…”

Section: Introductionmentioning

confidence: 99%

Carbon Fibers Prepared from Melt Spun Peracylated Softwood Lignin: an Integrated Approach

Steudle

Frank

Ota

et al. 2017

Macro Materials & Eng

Self Cite

View full text Add to dashboard Cite

Different softwood lignin O‐acyl derivatives, i.e., methacrylated, hexanoylated, benzoylated, methoxybenzoylated, and cinnamoylated lignin are synthesized and subjected to melt spinning. In the presence of spinning aids such as vanillin and ethylene glycol dimethacrylate, multifilament melt spinning is accomplished with spinning speeds up to 500 m min−1, which allowed for realizing uniform precursor fibers 17 μm in diameter. Out of all acyl‐derivatives of softwood lignin investigated, cinnamoylated softwood lignin (CL) turned out to be superior in terms of processability. CL‐derived precursor fibers are oxidatively thermostabilized and then carbonized applying carbonization temperatures up to 2200 °C. Carbon fiber structure formation is followed in detail by wide‐angle X‐ray scattering and Raman spectroscopy. An orientation ≤53% and a d 002 spacing of 0.353 nm is achieved. According to small angle X‐ray scattering, carbon fibers have a porosity of ≈38%. CL‐derived carbon fibers are also characterized in terms of mechanical properties. Tensile strengths up to 0.93 GPa (average 0.75 GPa) are obtained and follow Weibull statistics. Elastic moduli are ≤66.5 GPa (average 41.1 GPa).

show abstract

“…Spörl et al. successfully increased the carbon yield up to 35–38 wt% by using cellulosic derivate (cellulose tosylate/phosphate) precursor fibers spun with IL‐technology . Alternatively, other strategies have been developed to achieve higher carbonization yields of 25–38 wt% such as low heating rates during pyrolysis up to 400 °C, oxidative pretreatment, and application of carbonization aids, including catalysts for dehydration, for example, ammonium phosphates and sulfates .…”

Section: Cellulose Fiber Spinning Using Il‐technologymentioning

confidence: 99%

“…Alternatively, other strategies have been developed to achieve higher carbonization yields of 25–38 wt% such as low heating rates during pyrolysis up to 400 °C, oxidative pretreatment, and application of carbonization aids, including catalysts for dehydration, for example, ammonium phosphates and sulfates . Nonetheless, all these can so far not compete with the above‐outlined IL‐technology, whether in space‐time yields or CF properties.…”

Section: Cellulose Fiber Spinning Using Il‐technologymentioning

confidence: 99%

Processing of Cellulose Using Ionic Liquids

Hermanutz

Vocht

Panzier

et al. 2018

Macro Materials & Eng

Self Cite

View full text Add to dashboard Cite

The processing of cellulose dissolved in ionic liquids (ILs) enables the development of new materials. Besides the established production of cellulosic fiber products, interesting technical applications are developed like super micro filament fibers, cellulose/chitin blend fibers, precursors for carbon fibers, and all‐cellulose composites. This review provides a detailed summary of these new developments and describes how ILs are selected for the processing of cellulose with a particular emphasis on industrial realization. State‐of‐the‐art spinning processes are reviewed and it is illustrated how uniquely selected ILs can be used not only for established fiber spinning but for the development of new cellulose‐based materials.

show abstract

Carbon fibers prepared from ionic liquid-derived cellulose precursors

Cited by 40 publications

References 45 publications

Properties and Structure of Cellulosic Membranes Obtained from Solutions in Ionic Liquids Coagulated in Primary Alcohols

Properties and Structure of Cellulosic Membranes Obtained from Solutions in Ionic Liquids Coagulated in Primary Alcohols

Carbon Fibers Prepared from Melt Spun Peracylated Softwood Lignin: an Integrated Approach

Processing of Cellulose Using Ionic Liquids

Contact Info

Product

Resources

About