Results 111 to 120 of about 535 (148)
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N-Methylmorpholine-N-oxide (NMMO): hazards in practice and pitfalls in theory
Cellulose, 2021The 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
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Preparation of the Reed Cellulose Membrane by Using NMMO Method
Advanced Materials Research, 2012The reed cellulose was extracted from the wild reed in the hot 12% sodium hydroxide (NaOH) aqueous solution. Then, the cellulose membrane was successfully prepared by using the reed cellulose as the raw materials dissolved in the solvent of N-methylmorpholine-N-oxide (NMMO).
Mei Ling Pan +3 more
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Phase diagram of the ternary system NMMO/water/cellulose
Cellulose, 2009The phase diagram of the system N-methylmorpholine-N-oxide(NMMO)/H2O/cellulose has been measured at 80 °C by establishing a solubility map (observation of the mixtures under the microscope), by the analysis of coexisting phases and determining the critical point.
John Eckelt +5 more
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Structure formation of regenerated cellulose materials from NMMO-solutions
Progress in Polymer Science, 2001Cellulose as the most abundant regrowing organic material exhibits outstanding properties and useful applications, but also a tremendous challenge with regard to an economical and environmentally friendly chemical processing. In recent years the N-methylmorpholine-N-oxide (NMMO)-technology turned out to be a simple physical alternative to the yet ...
H.-P Fink, P Weigel, H.J Purz, J Ganster
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Insensitive munitions and combustion characteristics of BAMO/NMMO propellants
Journal of Energetic Materials, 1996Abstract Burning characteristics and sensitivities to the ballistic shock were investigated for BAMO/NMMO composite propellants oxidized with HMX, AP, and AN. Tests of card gap, fragment impact (FI), electrostatic discharge (ESD), and bullet impact were conducted to evaluate their sensitivities.
Eishu Kimura, Yoshio Oyumi
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Ethanol and biogas production from birch by NMMO pretreatment
Biomass and Bioenergy, 2013Abstract Birch wood was pretreated with N-methylmorpholine-N-oxide (NMMO or NMO) followed by enzymatic hydrolysis and fermentation to ethanol or digestion to biogas. The pretreatments were carried out with NMMO ( w NMMO = 85%) at 130 °C for 3 h, and the effects of drying after the pretreatment were investigated.
Amir Goshadrou +2 more
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Cellulose film with air barrier and moisture-conducting character fabricated by NMMO
Journal of Materials Science, 2021The use of natural polymer to prepare degradable films is a sustainable production concept that can improve resource utilization and reduce the environmental pollution caused by traditional packaging waste or another field. Here, a regenerated cellulose film was prepared through the N-methylmorpholine-N-oxide (NMMO) cellulose system. The most important
Junwu Peng +7 more
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Influence of the draw ratio on the tensile and fracture behavior of NMMO regenerated silk fibers
Journal of Polymer Science Part B: Polymer Physics, 2007AbstractThe tensile properties and fracture surfaces of N‐methylmorpholine‐N‐oxide (NMMO) regenerated silk fibroin fibers produced with a range of draw ratios has been characterized and related to their microstructure with data obtained from Raman spectroscopy and birefringence measurements.
CORSINI P +7 more
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Preparation of cellulose films from solution of bacterial cellulose in NMMO
Carbohydrate Polymers, 2012Bacterial cellulose (BC) was dissolved in N-methylmorpholine N-oxide (NMMO) to prepare regenerated BC films (RBC) with phase inversion. The solubility of BC, supermolecule on structure, morphology, thermal and physical properties of the films were investigated by Fourier transform infrared spectroscopy (FT-IR), solid-state cross polarization/magic ...
Gao Shanshan +2 more
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Viscosity‐molecular weight relationship for cellulose solutions in either NMMO monohydrate or cuen
Journal of Applied Polymer Science, 2010AbstractThe intrinsic viscosities, [η], of nine cellulose samples, with molar masses from 50 × 103 to 1 390 × 103 were determined in the solvents NMMO*H2O (N‐methyl morpholin N‐oxide hydrate) at 80°C and in cuen (copper II‐ethlenediamine) at 25°C. The evaluation of these results with respect to the Kuhn–Mark–Houwink relations shows that the data for ...
Eckelt, John +6 more
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