Method for preparing fibers by thermoplastic carboxymethylcellulose derivatives through electrostatic spinning

A technology of carboxymethyl cellulose and electrospinning, which is applied to artificial filaments made of cellulose derivatives, fiber treatment, filament/thread forming, etc., to achieve the effects of simple operation, environmental friendliness, and good economic benefits

Inactive Publication Date: 2013-01-09
SOUTHWEAT UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the prior art and literature reports, there are related reports on electrospinning of natural polymers such as silk, collagen, chitosan, etc., but there are still no reports on the preparation of fibers by thermoplastic carboxymethylcellulose derivative solutions and melt electrospinning. No report

Method used

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  • Method for preparing fibers by thermoplastic carboxymethylcellulose derivatives through electrostatic spinning
  • Method for preparing fibers by thermoplastic carboxymethylcellulose derivatives through electrostatic spinning
  • Method for preparing fibers by thermoplastic carboxymethylcellulose derivatives through electrostatic spinning

Examples

Experimental program
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Effect test

Embodiment 1

[0030] A method for preparing fibers by electrostatic spinning of thermoplastic carboxymethylcellulose derivatives, comprising the following steps:

[0031] a. For thermoplastic modification of cellulose, dissolve 20 parts of sodium carboxymethyl cellulose (parts by weight, grams, the same hereinafter) in the water system, add ammonium persulfate after swelling, and add 100 parts of methyl acrylate for graft copolymerization Reaction, react at 75°C for 4 hours, precipitate and extract with 50 parts of ethanol for 8 hours, and dry to obtain thermoplastic cellulose;

[0032] b. The prepared thermoplastic cellulose is pulverized, and the powder is dissolved in tetrahydrofuran solvent to prepare a solution with a weight percentage of 3%, and then the solution is fully stirred so that it is completely dissolved, and the solution is placed in an ultrasonic wave to completely separate out the bubbles. Obtain an electrospinning solution;

[0033] c. Extract the electrospinning soluti...

Embodiment 2

[0035] A method for preparing fibers by electrostatic spinning of thermoplastic carboxymethylcellulose derivatives, comprising the following steps:

[0036] a. For thermoplastic modification of cellulose, dissolve 20 parts of sodium carboxymethyl cellulose (parts by weight, grams, the same hereinafter) in the water system, add ammonium persulfate after swelling, and add 100 parts of methyl acrylate for graft copolymerization Reaction, react at 75°C for 4 hours, precipitate and extract with 50 parts of ethanol for 8 hours, and dry to obtain thermoplastic cellulose;

[0037]b. The prepared thermoplastic cellulose is pulverized, and the powder is dissolved in tetrahydrofuran solvent to prepare a solution of 4% by weight, then the solution is fully stirred so that it is completely dissolved, and the solution is placed in an ultrasonic wave to completely separate out the bubbles. Obtain an electrospinning solution;

[0038] c. Extract the electrospinning solution prepared in step ...

Embodiment 3

[0040] A method for preparing fibers by electrostatic spinning of thermoplastic carboxymethylcellulose derivatives, comprising the following steps:

[0041] a. For thermoplastic modification of cellulose, dissolve 20 parts of sodium carboxymethyl cellulose (parts by weight, grams, the same hereinafter) in the water system, add ammonium persulfate after swelling, and add 100 parts of methyl acrylate for graft copolymerization Reaction, react at 75°C for 4 hours, precipitate and extract with 50 parts of ethanol for 8 hours, and dry to obtain thermoplastic cellulose;

[0042] b. The prepared thermoplastic cellulose is pulverized, and the powder is dissolved in tetrahydrofuran solvent to prepare a 5% solution by weight, then the solution is fully stirred so that it is completely dissolved, and the solution is placed in an ultrasonic wave to completely separate out the bubbles. Obtain an electrospinning solution;

[0043] c. Extract the electrospinning solution prepared in step b ...

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Abstract

The invention discloses a method for preparing fibers by thermoplastic carboxymethylcellulose derivatives through electrostatic spinning, which is characterized by comprising the following steps of: dissolving sodium carboxymethylcellulose into water, swelling and adding initiator ammonium persulfate to initiate the reaction for 0.1-2 hours; then adding methyl acrylate to carry out a graft copolymerization reaction; then reacting at a temperature in a range of 40-85 DEG C for 0.5-8 hours; then mixing ethanol with reacted material, standing and filtering; mixing the solid with acetone, standing and filtering; then drying the solid to prepare a thermoplastic cellulose; crushing the thermoplastic cellulose into powder and dissolving the powder into an organic solvent to prepare solution to obtain electrostatic spinning solution; carrying out an electrostatic spinning on the electrostatic spinning solution in an electrostatic spinning device; then drying to obtain the fibers. According tothe method provided by the invention, the spinnability of the cellulose material solution is effectively solved and the prepared fibers can be spun into a membrane which can be applied to wastewater treatment, membrane permeation and the like, thereby exploring a new usage of the cellulose derivative materials.

Description

technical field [0001] The invention belongs to the field of utilization of biomass resources, and relates to a method for preparing fibers by electrostatic spinning of thermoplastic carboxymethyl cellulose derivatives. It is especially suitable for the application of biomass modification technology and modified materials. Background technique [0002] Cellulose is a cheap and easy-to-obtain renewable resource, which widely exists in various living and non-living organisms in nature. It has the advantages of biodegradability, regeneration and good biocompatibility. , Textile, printing and dyeing, papermaking, petroleum, geology and other production fields have a wide range of uses. Cellulose materials can be degraded by natural microorganisms after they are discarded, and are environmentally friendly materials. Because cellulose has the advantages of wide sources and renewable, and compared with other natural polymers, cellulose has good thermal and mechanical properties, ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D01F2/28D01D5/00C08F251/02
Inventor 林晓艳陈哲罗学刚张弛
Owner SOUTHWEAT UNIV OF SCI & TECH
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