Results 161 to 170 of about 2,536 (191)

Ethanol and biogas production from birch by NMMO pretreatment

Biomass and Bioenergy, 2013
Abstract 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, Keikhosro Karimi, Mohammad J. Taherzadeh   +2 more
openaire   +1 more source

Cellulose film with air barrier and moisture-conducting character fabricated by NMMO

Journal of Materials Science, 2021
The 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, Yanan Li, Xinglin Liu, Guizhen Ke, Dengpeng Song, Shuangquan Wu, Weilin Xu, Kunkun Zhu   +7 more
openaire   +1 more source

Preparation of cellulose films from solution of bacterial cellulose in NMMO

Carbohydrate Polymers, 2012
Bacterial 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, Wang Jianqing, Jin Zhengwei   +2 more
exaly   +2 more sources

Influence of the draw ratio on the tensile and fracture behavior of NMMO regenerated silk fibers

Journal of Polymer Science Part B: Polymer Physics, 2007
AbstractThe 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, PEREZ RIGUEIRO J, GUINEA G. V, PLAZA G. R, ELICES M, MARSANO, ENRICO, CARNASCIALI, MARIA, FREDDI G.   +7 more
openaire   +1 more source

Viscosity‐molecular weight relationship for cellulose solutions in either NMMO monohydrate or cuen

Journal of Applied Polymer Science, 2010
AbstractThe 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, Knopf, Anja, Roeder, Thomas, Weber, Hedda K., Sixta, Herbert, Wolf, Bernhard, A.   +6 more
openaire   +2 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 ...
T. Rosenau, A. Hofinger, A. Potthast, P. Kosma   +3 more
openaire   +1 more source

Influence of coagulation bath on morphology of cellulose membranes prepared by NMMO method

Frontiers of Chemical Engineering in China, 2008
To control the morphology of cellulose membranes used for separation, they were prepared by the NMMO method using water, methanol, ethanol and their binary solution as coagulation baths. Morphologies of the surface and cross section of dry membranes were observed. The pore structure parameters of wet membranes were determined.
Yangcheng Lu, Yingxin Wu
openaire   +1 more source

Structural characterization of cellulose pulp in aqueous NMMO solution under the process conditions of lyocell slurry

Carbohydrate Polymers, 2019
A systematic structural characterization of dissolving grade cellulose pulp in aqueous NMMO solution is performed under the process conditions of lyocell slurry. Different types of cellulosic pulps such as hard/soft wood and acid sulfite/kraft sulphate pulps are used for the present study.
Anwar Sayyed, Dipak Vitthal Pinjari
exaly   +3 more sources

Untersuchungen am System NMMO/H2O/Cellulose

2003
Die vorliegende Arbeit befasst sich mit der Untersuchung des Zweistoffsystems N-Methylmorpholin-N-oxid (NMMO)/H2O und des Dreistoffsystems NMMO/H2O/Cellulose sowie mit der Herstellung und Charakterisierung von faserverstärkten Cellulosefolien. Das binäre System wird mittels Dynamischer Differenzkalorimetrie und Röntgenweitwinkel-Diffraktometrie ...
openaire   +2 more sources

Biogas Production from N-Methylmorpholine-N-oxide (NMMO) Pretreated Forest Residues

Applied Biochemistry and Biotechnology, 2014
Lignocellulosic biomass represents a great potential for biogas production. However, a suitable pretreatment is needed to improve their digestibility. This study investigates the effects of an organic solvent, N-Methylmorpholine-N-oxide (NMMO) at temperatures of 120 and 90 °C, NMMO concentrations of 75 and 85% and treatment times of 3 and 15 h on the ...
Solmaz, Aslanzadeh, Andreas, Berg, Mohammad J, Taherzadeh, Ilona, Sárvári Horváth   +3 more
openaire   +2 more sources