Results 151 to 160 of about 3,236 (207)

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
Jun Peng, Ya’nan Li, Xinglin Liu, G. Ke, Dengpeng Song, Shuangquan Wu, Weilin Xu, Kunkun Zhu   +7 more
semanticscholar   +2 more sources

Degradation and regeneration of feather keratin in NMMO solution

Environmental Science and Pollution Research, 2017
Chicken feather, a potential source of keratin, is often disposed as waste material. Although some methods, i.e., hydrolysis, reduction, and oxidation, have been developed to isolate keratin for composites, it has been limited due to the rising environmental concerns.
Bomou Ma, Qisong Sun, Jing Yang, Jakpa Wizi, Xiuliang Hou, Yiqi Yang   +5 more
semanticscholar   +3 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 ...
T. Rosenau, A. French
semanticscholar   +2 more sources

Dope dyeing of lyocell fiber with NMMO-based carbon black dispersion.

Carbohydrate Polymers, 2017
NMMO-based carbon black (CB) dispersion was prepared and its properties as well as its compatibility with lyocell spinning solution were further investigated. Modified lignosulfonate (SP) was verified to be the preeminent dispersant for the preparation of NMMO-based CB dispersion with mass ratio of SP to CB 20% and water to NMMO 13%.
Liping Zhang, Weize Sun, Dan Xu, Min Li, C. Agbo, Shaohai Fu   +5 more
semanticscholar   +3 more sources

Oxidation and structural changes in NMMO-regenerated cellulose films

Cellulose, 2016
Carbonyl and carboxyl groups introduced by oxidative processes during production and purification of celluloses determine intra- and intermolecular interactions and thus application-related bulk and surface properties of cellulosic materials. We report a comprehensive approach to the quantification of carboxyl and carbonyl groups in cellulose films ...
Ralf Zimmermann, Yvonne Müller, U. Freudenberg, D. Jehnichen, A. Potthast, T. Rosenau, C. Werner   +6 more
semanticscholar   +2 more sources

3D bioprinting of cellulose with controlled porous structures from NMMO

Materials Letters, 2018
Abstract In the present work, dissolved cellulose has been 3D bioprinted to produce complex structures with ordered interconnected pores. The process consists of the dissolution of dissolving pulps in N-methylmorpholine-N-oxide (NMMO), multilayered dispensing, water removal of NMMO and freeze-drying. 3D bioprinting of cellulose/NMMO solution at 70 °C
Lei Li, Yufang Zhu, Junhe Yang
semanticscholar   +2 more sources

Antibacterial cellulose solution-blown nonwovens modified with salicylic acid microcapsules using NMMO as solvent.

Carbohydrate Polymers
Solution blowing process was used to prepare cellulose nonwovens, by using N-methyl morpholine-N-oxide (NMMO) as solvent, and salicylic acid (SA) microcapsules as antibacterial additives. The structure and properties of cellulose nonwovens modified with different SA microcapsules contents were compared and evaluated.
Huihui Zhang, Zhaobin Chen, Gesheng Yang, Xiang Yao, Yaopeng Zhang, H. Shao   +5 more
semanticscholar   +3 more sources

Cellulose acetate fibers with improved mechanical strength prepared with aqueous NMMO as solvent

Cellulose, 2018
Cellulose diacetate (CA) was successfully dissolved in N-methylmorpholine N-oxide aqueous solution (NMMO·H2O). The CA degraded little during the dissolving process and the homogenous CA/NMMO·H2O solutions were obtained even when the concentration was up to 18%.
W. Yuan, Kaijian Wu, N. Liu, Yumei Zhang, Huaping Wang   +4 more
semanticscholar   +2 more sources

Enhancing barrier and mechanical properties of paper through NMMO/cellulose solution coating

Cellulose
Xinyun Du, Leilei Hou, Yun Cheng, Linghua Chen, Xuemei Chen, Lihuan Mo, Gang Yu, Hongkai Li, Xue Zhang, Hongjie Zhang   +9 more
semanticscholar   +2 more sources

Characterization of BAMO/NMMO Copolymers

Propellants, Explosives, Pyrotechnics, 1994
AbstractThe compositions and microstructures, thermolyses, and sensitivities of 3,3‐bis(azidomethyl)oxetane (BAMO) copolymers with 3‐nitratomethyl‐3‐methyloxetane (NMMO) were characterized. The molar ratios of monomers fed in the copolymerizations were: BAMO/NMMO = 8/2, 7/3, and 6/4. The observed compositions were 81/19, 68/32, and 60/40, respectively.
Eishu Kimura, Yoshio Oyumi, Hidetoshi Kawasaki, Yuko Maeda, Toshiyuki Anan   +4 more
openaire   +1 more source