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Recent advances in nanocellulose scaffold membranes: Sources, processing and functionalization. [PDF]

Mater Today Bio
Chen H, Huang Y, Wang F, Fu Z, Li A, Abdelsadig M, Brassil M, Xia Y, Zhou B, Du G, Fan M.   +10 more
europepmc   +1 more source

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Ozonation of wastewater containing N-methylmorpholine-N-oxide

Water Research, 1996
Abstract Ozonation of synthetic wastewater containing N-methylmorpholine-N-oxide (NMMO) was investigated in batch experiments at different pH-values. Increasing pH caused higher initial elimination rates of NMMO as well as higher formation rates of nitrate.
Elmar Heinzle
exaly   +2 more sources

Interactions between cellulose and N-methylmorpholine-N-oxide

Carbohydrate Polymers, 2007
Abstract Cellulose II structure was obtained when cellulose precipitated from NMMO/H 2 O/cellulose solution by adding excess water. The regenerated cellulose was three times more reactive than that of untreated cellulose in hydrolysis reactions. X-ray diffraction (XRD), 13 C Solid-State Nuclear Magnetic Resonance (NMR) and Fourier Transform Infrared
Ja Hun Kwak, Johnathan Holladay
exaly   +3 more sources

Enhanced enzymatic hydrolysis of sugarcane bagasse by N-methylmorpholine-N-oxide pretreatment

Bioresource Technology, 2009
The cellulose dissolution solvent used in Lyocell process for cellulose fiber preparation, N-methylmorpholine-N-oxide (NMMO) monohydrate, was demonstrated to be an effective agent for sugarcane bagasse pretreatment. Bagasse of 20wt% was readily dissolved in NMMO monohydrate at 130 degrees C within 1h.
Cheng-Kang Lee, Chia-Hung Kuo
exaly   +4 more sources

On the conformation of the cellulose solvent N-methylmorpholine-N-oxide (NMMO) in solution

Polymer, 2003
Abstract The N-oxide group of the cellulose solvent N-methylmorpholine-N-oxide showed a strong preference for the axial position compared with N-methyl as determined by NMR experiments and computational studies. In solvents with negligible solvent–solute interaction, about 95% of the NMMO molecules obtained a typical chair conformation with an axial ...
Paul Kosma, Antje Potthast, T Rosenau
exaly   +2 more sources

Phase diagram of a cellulose solvent: N-methylmorpholine–N-oxide–water mixtures

Polymer, 2003
Abstract The phase diagram of the N -methylmorpholine– N -oxide–H 2 O mixtures from 0 to 100% has been determined. Three crystalline hydrates have been identified, the already known monohydrate, a dihydrate and a hydrate composed of 8 water molecules per NMMO.
Patrick Navard
exaly   +3 more sources

A self-stiffness finishing for cotton fabric with N-methylmorpholine-N-oxide

Cellulose, 2015
In this study, the surface layer of cotton fabric was swelled with N-methylmorpholine-N-oxide with 18 % water content, washed and dried to improve its stiffness property. Finally, the finished fabric had no auxiliaries and self-stiffened. The results showed that the bending rigidity increased from 0.75 × 105 to 1.57 × 105 mN cm, the acute elastic ...
Fengxiu Zhang, Zhang Fengxiu, Fang Xu
exaly   +2 more sources

Thermal hazards evaluation of the synthesis of N-methylmorpholine-N-oxide

Journal of Thermal Analysis and Calorimetry, 2021
This study focused on the assessment of thermal safety associated with the synthesis of N-methylmorpholine-N-oxide (NMMO), a reaction known to be hazardous. First, a reaction calorimeter (SIMULAR) was used to investigate the exothermic behavior of the reaction in the semi-batch operation.
Jiancun Gao, Chenguang Shi, Sisi Liu, Shengnan Wang, Wei Wang   +4 more
openaire   +1 more source

Biodegradation of N-Methylmorpholine-N-oxide

Biodegradation, 1998
N-Methylmorpholine-N-oxide (NMMO) is capable of dissolving cellulose without any further addition of chemicals. The solution can be used to produce cellulosic staple fibres by pressing it through spinning jets into an aqueous spinning bath. Because of results from conventional biodegradation tests using non-adapted activated sludge, the solvent is ...
G, Meister, M, Wechsler
openaire   +2 more sources

N-Methylmorpholine-N-oxide (NMMO): hazards in practice and pitfalls in theory

Cellulose, 2021
The hazards of handling N-methylmorpholine-N-oxide (NMMO) cannot be described often enough, although it is a rather common (co-)solvent for cellulose. Inaccuracies in the literature regarding the chemistry of NMMO, such as its role in solvent systems and in redox systems involving transition metal ions, increase the risk of dangerous failure of the ...
Thomas Rosenau, Alfred D. French
openaire   +1 more source