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Livistona chinensis cellulose dissolving method

A technology of palmetto cellulose and palmetto cellulose, which is applied in the field of dissolving palmetto cellulose, can solve the problems of not being able to meet the demand for fiber products and small fiber output

Inactive Publication Date: 2015-11-04
WUYI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] China has independently developed bamboo fiber and hemp fiber, but the output of these two fibers is small, which is far from meeting the demand for fiber products

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] (1) Dissolution pretreatment

[0017] Prepare an NMMO solution with a moisture content of 13.3%, add the dried palmflower cellulose at 5% of the NMMO solution, and stir evenly.

[0018] (2) dissolve

[0019] The uniformly stirred solution in step (1) was continuously stirred at 90°C for 4 hours, cooled to 80°C, and stirred for 3 hours to obtain a brown translucent cellulose solution. The cellulose solution obtained in this example can be used to prepare regenerated palmflower cellulose films and regenerated palmflower cellulose fibers.

Embodiment 2

[0021] (1) Dissolution pretreatment

[0022] After drying the palmetto cellulose to constant weight, mix it with DMAC solution at a solid-to-liquid ratio of 1:10 (g / ml), add 0.2% potassium permanganate, activate it in an oil bath at 120°C for 2 hours, and evaporate DMAc Drain and dry; configure a LiCl / DMAc solution with a LiCl mass fraction of 7%, add activated palm cellulose at 3% of the solution and stir evenly.

[0023] (2) dissolve

[0024] The solution in step (1) was stirred and reacted at 120° C. for 2 h, cooled to room temperature, and stirred for 3 h to obtain a brown translucent palmflower cellulose solution. The cellulose solution obtained in this example can be used to prepare regenerated palmflower cellulose films and regenerated palmflower cellulose fibers.

Embodiment 3

[0026] (1) Dissolution pretreatment

[0027] Configure a zinc chloride aqueous solution with a mass fraction of 65%, heat it at 85°C until the zinc chloride is completely dissolved, and add 5% of the dried palmetto cellulose to the configured ZnCl 2 solution and stir well.

[0028] (2) dissolve

[0029] Stir the solution prepared in step (1) at 85°C for 5 minutes, then cool the solution to 60°C, and keep stirring for 2 hours until the cellulose is completely dissolved to obtain a transparent palmflower cellulose solution. The cellulose solution obtained in this example can be used to prepare regenerated palmflower cellulose films and regenerated palmflower cellulose fibers.

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PUM

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Abstract

The invention relates to a Livistona chinensis cellulose dissolving method. The method comprises two steps of pretreatment and dissolution. A cellulose solvent used in the invention is direct dissolving Livistona chinensis cellulose; no derivatization will happen; and excellent properties of Livistona chinensis cellulose can be maintained. Meanwhile, the cellulose dissolving system used in the invention is stable, a solvent is easy to recover, and the dissolving mode has strong operationality.

Description

technical field [0001] The invention relates to the dissolution of palmflower cellulose and belongs to the field of cellulose dissolution. Background technique [0002] Due to the increase in population and the sharp rise in people's demand for textiles, the reduction of cotton arable land and the depletion of oil resources, people urgently need to find new fiber raw materials. As the most widely distributed, richest and most valuable natural renewable resource in nature, cellulose can be widely used in papermaking and textiles, and its functional products are also widely used in energy, materials, chemical and other fields, so looking for New cellulose sources have become the focus of research and development at home and abroad. [0003] China has independently developed bamboo fiber and hemp fiber, but the output of these two fibers is small, which is far from meeting the demand for fiber products. Work to develop new cellulose fibers needs to continue. Through experime...

Claims

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Application Information

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IPC IPC(8): C08J3/02C08J3/09C08L1/02
Inventor 贾永堂于晖董凤春孙婷婷曾显华
Owner WUYI UNIV
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