Preparation method of bacterial cellulose solution

A technology of bacterial cellulose and solution, which is applied in the field of bacterial cellulose solution, can solve the problems of toxicity and high price of LICl/DMAC system, and achieve the effects of less energy consumption, simple preparation process and high safety

Inactive Publication Date: 2010-02-03
DONGHUA UNIV
View PDF0 Cites 7 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But these kinds of dissolution systems have certain disadvantages. For example, [BMIM]Cl has certain toxici

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0018] Example 1

[0019] Measure 64mL (0.8mol) of N-methylimidazole and 98mL (1.2mol) of allyl chloride and mix them in a 250mL round-bottomed flask so that the molar ratio of N-methylimidazole to allyl chloride is 1:1.5. Under the action of magnetic stirring, heated in a water bath at 60°C and refluxed. After 10 hours, a brown liquid was obtained with a higher viscosity. Add 50 mL of ether to extract the excess allyl chloride, and then remove the excess ether with a rotary evaporator. A brown transparent liquid chloro 1-allyl-3-methylimidazole ([AMIM]Cl) was obtained at room temperature.

[0020] Weigh 0.8 g freeze-dried bacterial cellulose into 40 g ionic liquid [AMIM]Cl according to a mass ratio of 2:100, heat it in a water bath at 90°C, and stir it magnetically until it is completely dissolved.

Example Embodiment

[0021] Example 2

[0022] The preparation of [AMIM]Cl ionic liquid is as described above.

[0023] Weigh 1.6 g of freeze-dried bacterial cellulose according to a mass ratio of 4:100 and put it into 40 g of ionic liquid [AMIM]Cl, heat it in a water bath at 90°C, and stir it magnetically until it is completely dissolved.

Example Embodiment

[0024] Example 3

[0025] The preparation of [AMIM]Cl ionic liquid is as described above.

[0026] According to the mass ratio of 5:100, weigh 2g of freeze-dried bacterial cellulose and put it into 40g of ionic liquid [AMIM]Cl, heat it in a water bath at 90°C, and stir magnetically until it is completely dissolved.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

PropertyMeasurementUnit
Boiling pointaaaaaaaaaa
Login to view more

Abstract

The invention relates to a preparation method of a bacterial cellulose solution, which comprises the following steps: (1) mixing N-methylimidazole with allyl chloride, and treating the mixture by rotary evaporation to obtain <AMIM>Cl; or mixing N-methylimidazole with 1-chlorobutane, and treating the mixture by rotary evaporation to obtain <BMIM>Cl; and (2) mixing the bacterial cellulose with the ionic liquid, and heating and stirring the mixture at 30-100 DEG C in a water bath. The invention has simple preparation processes, has no need of pretreatment of the cellulose materials, such as derivation, activation and the like, has less energy consumption and is suitable for industrial production.

Description

technical field [0001] The invention belongs to the technical field of bacterial cellulose solution, in particular to a preparation method of bacterial cellulose solution. Background technique [0002] Bacterial cellulose (Bacterial Cellulose, BC) is extracellular cellulose produced by microorganisms, also known as microbial cellulose (Microbial Cellulose), is another kind of natural inert material synthesized by bacteria besides plant cellulose. Bacterial cellulose has the same chemical structure as plant cellulose, and both can be called β-1,4-glucan. However, compared with plant cellulose, bacterial cellulose has many incomparably superior characteristics, such as : (1) Ultra-fine fiber. Microfibers form a unique bundle of fibers with a width of about 100nm and a thickness of 3-8nm. They are nano-polar fibers and are the thinnest natural fibers at present, and their size is only 1 / 10 of that of artificial synthetic fibers; (2) The speed and yield of bacteria synthesizin...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): C08J3/09C08J3/11
Inventor 洪枫李朋
Owner DONGHUA UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap