Patent
Method for preparing cellulose solution
Zhou Zuowan,Wei Wei,Cui Yuhu,Guangjun Gou,Jiang Man,Xiaoling Xu,Fanbin Meng,Zeyong Wang +7 more
- 27 Jul 2016
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TL;DR: In this article, a room-temperature mild dissolution technical method for cellulose is presented.The method has the advantages that the technology is simple, room temperature dissolution is achieved, and the method is environmentally friendly and not sensitive to the moisture content of a system.
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Abstract: The invention discloses a method for preparing a cellulose solution.According to the basic technical principle of the method, the wetting property of a solvent on natural cellulose crystals is improved with the amphipathicity of the cellulose solvent so that dissolution of cellulose can be promoted.Based on the principle, the invention provides a room-temperature mild dissolution technical method for cellulose.The method has the advantages that the technology is simple, room-temperature dissolution is achieved, and the method is environmentally friendly and not sensitive to the moisture content of a system.The cellulose solvent is prepared from, by weight, 5-70% of organic base, 2-90% of an assistant and 1-65% of water.Cellulose and the cellulose solvent are blended to form a blend, stirring is carried out until complete dissolution, and the target cellulose solution is obtained.The cellulose solution prepared with the method is used for manufacturing regenerated cellulose membranes or regenerated cellulose fibers or cellulose-base composites.
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Citations
Patent
Cellulose solution and preparation method thereof
Fei Wang,Xiao Chen,Xu-Min Cai,Liu Xin +3 more
- 13 Jul 2018
TL;DR: In this article, a cellulose solution and a preparation method consisting of the following steps of soaking the raw material of cellulose into water at the temperature of 15 to 30 DEG C, and drying, so as to obtain the swelled cellulose; mixing the cellulose and a polarity organic solvent, and then mixing under the stirring condition, wherein the stirring speed is 200 to 400r/min, and the stirring time is 2 to 6h.
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Patent
Carbon nano tube fiber composite material, preparation method and application thereof and coaxial spinning device
Meng Fanbin,Changfei Jing,Zhou Zuowan,Tingting Yu,Wei Wei,Li Jinyang,Wang Zeyong,Jiang Man,Xu Xiaoling +8 more
- 27 Sep 2019
TL;DR: In this article, a carbon nano tube fiber composite material, a preparation method and application thereof and a coaxial spinning device, and relates to the technical field of carbon nano tubes are discussed.
Patent
Ionic liquid solvent-based cellulose relative polymerization degree measuring method
Nie Yi,Le Zhou,Kang Zhaoqing,Liu Yanrong,Fengjiao Pan,Zhang Suojiang,Zhang Xiangping +6 more
- 11 Jan 2019
TL;DR: In this paper, an ionic liquid solvent-based cellulose relative polymerization degree measuring method is proposed, which comprises the following steps: uniformly mixing ionic liquids with a relatively good cellulose dissolving effect with cyclohexanol sulfone (or dimethyl sulfoxide) to obtain a mixed reagent with a stable nature and high cellulose capacity; and dissolving ionic fluid andcellulose mixed colloid in the solvent, and measuring a specific viscosity ratio of a cellulose solution through a ukrainian viscometer, so as to
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Fast and facile dissolution of cellulose with tetrabutylphosphonium hydroxide containing 40 wt% water
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Patent
Cellulose solvent and method for preparing spinning fluid from the same
Yong Zhang,Meiling Wang,Hongjun Zang,Bowen Cheng +3 more
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TL;DR: In this article, a cellulose solvent and a process for preparing spinning fluid is described, and the solvent is prepared into homogeneous mixing liquid by the following formula under the temperature of 25-150 DEG C and the condition of stirring, the formula comprises N-methyl N-pi-allyl morpholine hydrochlorate which accounts for 1-99% of the total weigh of solvent, mixture accounts for 99-1% of total weight of solvent.
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Patent
Method for dissolving cellulose and method for preparing regenerated fiber
Qingsong Zhu,Cheng Chunzu,Sun Yushan,Xiaojun Li +3 more
- 02 May 2012
TL;DR: In this article, a method for dissolving cellulose is proposed, comprising of three steps: firstly mixing the cellulose and a solvent with the weight accounting for 30-70wt% of the total weight of the solvent, then adding the remaining solvent for dissolution at the temperature of 15 below zero to 5 DEG C.
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Patent
Process for producing cellulose shaped articles
Martin Cockcroft,Colin Marshall +1 more
- 21 Jun 2011
TL;DR: In this article, a process for producing cellulose-shaped articles is described, in which cellulose is at least partly dissolved at a temperature of about 100°C or lower in a dope comprising an ionic liquid and a cosolvent to form a cellulose solution, wherein said cosoline comprises a polar aprotic component, and cellulose shaped articles are cast from the cellulose mixture.
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Patent
Steam flash explosion method modification of wood cellulose and its dissolving technology in novel solvent
Huimin Tan,Dongxing Wang,Ziqiang Shao +2 more
- 10 Nov 2004
TL;DR: In this article, a high pressure vapor flash blast process is utilized to carry out structure modification to water or/and diluted acid immersed natural pure hardwood and soft wood cellulose at supermolecule level, and environmental-friendly, low-priced, low concentration NaOH / adjuvant new pattern dissolvent system is used to completely dissolve the modified cellulose, and a cellulose film with compact interior structure is obtained by further flowing the solution on the plate glass or film drawing, placing into diluted acid solution of a finite concentration for congelation and film forming, and
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