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A kind of carboxymethyl chitosan/cellulose composite material and preparation method thereof

A technology of carboxymethyl chitosan and composite materials, which is applied in the direction of cellulose/protein conjugated artificial filament, fiber chemical characteristics, textiles and papermaking, etc., and can solve the problem of long swelling time of chitosan and complicated steps in the dissolution process, etc. problems, to achieve the effect of good performance index of blend rubber, moderate elongation at break and high production efficiency

Active Publication Date: 2017-03-15
潍坊欣龙生物材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method uses chitosan for a long time to swell, and the steps of the dissolution process are complicated

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] A preparation method of carboxymethyl chitosan / cellulose composite material, comprising the following steps:

[0042] a, Preparation of carboxymethyl chitosan / cellulose blended dissolving gel

[0043] Add 1g of carboxymethyl chitosan and 199g of cellulose into a reaction kettle containing 300g of 1-butyl-3-methylimidazolium chloride salt, and at 80°C and -0.01Mpa vacuum conditions, the stirring speed is 30r / min, stirring and dissolving for 4h, the carboxymethyl chitosan / cellulose dissolving glue with a total solid content of 40% was obtained, and the prepared carboxymethyl chitosan / cellulose dissolving glue had excellent performance indicators;

[0044] b. Spinning blended fibers

[0045] Carboxymethyl chitosan / cellulose fiber is prepared by using the dry-wet processing technology of the dissolving gel through a spinning device;

[0046] c. Preparation of blended film

[0047] The carboxymethyl chitosan / cellulose film is prepared by adopting the dry-wet processing t...

Embodiment 2

[0051] a, Preparation of carboxymethyl chitosan / cellulose blended dissolving gel

[0052] Add 10g of carboxymethyl chitosan and 90g of cellulose into a reaction kettle containing 400g of 1-ethyl-3-methylimidazole acetate, and at 100°C and -0.05Mpa vacuum conditions, the stirring speed is 80r / min, stirring and dissolving for 2h, to obtain the carboxymethyl chitosan / cellulose dissolving glue with a total solid content of 20%, the prepared carboxymethyl chitosan / cellulose dissolving glue is excellent in every performance index;

[0053] b. Spinning blended fibers

[0054] Carboxymethyl chitosan / cellulose fiber is prepared by using the dry-wet processing technology of the dissolving gel through a spinning device;

[0055] c. Preparation of blended film

[0056] The carboxymethyl chitosan / cellulose film is prepared by adopting the dry-wet processing technology of the dissolving gel and passing through the film-forming device.

[0057] Measure the carboxymethyl chitosan / cellulose ...

Embodiment 3

[0060] a, Preparation of carboxymethyl chitosan / cellulose blended dissolving gel

[0061] Add 50g of carboxymethyl chitosan and 50g of cellulose into a reaction kettle filled with 900g of 1-allyl-3-methylimidazolium bromide, at 140°C and -0.10Mpa vacuum conditions, the stirring speed is 120r / min, stirring and dissolving for 0.5h, obtaining the carboxymethyl chitosan / cellulose dissolving glue with a total solid content of 10%, the prepared carboxymethyl chitosan / cellulose dissolving glue is excellent in every performance index;

[0062] b. Spinning blended fibers

[0063] Carboxymethyl chitosan / cellulose fiber is prepared by using the dry-wet processing technology of the dissolving gel through a spinning device;

[0064] c. Preparation of blended film

[0065] The carboxymethyl chitosan / cellulose film is prepared by adopting the dry-wet processing technology of the dissolving gel and passing through the film-forming device.

[0066] Measure the carboxymethyl chitosan / cellul...

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Abstract

The invention discloses a method for preparing a carboxymethyl chitosan / cellulose composite material. The method comprises the following steps: preparing carboxymethyl chitosan / cellulose blend dissolved glue and spinning blend fibers or preparing a blend film, wherein in the step of preparing the carboxymethyl chitosan / cellulose blend dissolved glue, carboxymethyl chitosan and cellulose are added into a reaction kettle filled with ionic liquid in a mass ratio of 1 to (1-29), and are stirred and dissolved for a period of time under a heating vacuum condition to obtain the carboxymethyl chitosan / cellulose blend dissolved glue of which the total solid content is 3-20 percent. The prepared carboxymethyl chitosan / cellulose fiber or film has high tensile strength and good antibacterial performance.

Description

technical field [0001] The invention relates to the field of functional cellulose fibers, in particular to a carboxymethyl chitosan / cellulose composite material using ionic liquid as a solvent and a preparation method thereof. Background technique [0002] Cellulose fiber has the advantages of excellent hygroscopicity, air permeability, antistatic property, dyeability and soft and comfortable hand feeling, and is widely used. In order to meet special needs, the cellulose fibers are modified to have certain functionalities. [0003] Chitin widely exists in the shells of shrimps, crabs, and insects, as well as the cell walls of fungi and algae, and is a renewable natural resource. Chitosan is obtained through deacetylation of chitin, and chitosan has one more active -NH than chitin 2 Base, with excellent biodegradability, biocompatibility, broad-spectrum antibacterial properties. Chitosan and its derivatives are widely used in food, biomedicine, cosmetics and other fields. ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D01F8/02D01F8/18C08L1/02C08L5/08
Inventor 马君志于万永吴亚红徐海鹏王桂森于圣君申孝忠刘长军
Owner 潍坊欣龙生物材料有限公司