Method for preparing pure sodium alginate nano fiber membrane material

A technology of nanofiber membrane and sodium alginate, which is applied in fiber treatment, spinning solution preparation, alginate artificial filament, etc., can solve the problems such as no pure sodium alginate electrospinning reported in the literature, and achieve cost cheap effect

Inactive Publication Date: 2008-07-30
INST OF CHEM CHINESE ACAD OF SCI
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  • Abstract
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  • Method for preparing pure sodium alginate nano fiber membrane material
  • Method for preparing pure sodium alginate nano fiber membrane material

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Embodiment 1

[0022] Step 1: Use sodium alginate with a viscosity of 3500 centipoise as the raw material, and the modifier is glycerin, and uniformly disperse the sodium alginate in glycerin at room temperature, wherein the weight-to-volume ratio of sodium alginate to glycerin is 4g / ml %.

[0023] Step 2: Add solvent water to the above suspension, wherein the volume ratio of water to glycerin is 1, and continue to stir until it dissolves into a uniform and transparent solution.

[0024] Step 3: Inject the above-mentioned solution that has been left standing to remove air bubbles into the electrospinning container. ) and the distance between the spinneret is 12cm. Turn on the feeding device pump equipped with the sodium alginate electrospinning stock solution, the jet stream is sprayed on the collector, the electrospinning process is stable, and the collector completely immersed in the coagulation bath (the coagulation bath is a mass percent concentration of 10% CaCl 2 The mixed solution ...

Embodiment 2

[0027]Step 1: Use sodium alginate with a viscosity of 3500 centipoise as the raw material, and the modifier is glycerin, and uniformly disperse the sodium alginate in the modifier at room temperature, wherein the weight-to-volume ratio of sodium alginate to glycerol is 3g / ml%.

[0028] Step 2: Add solvent water to the above suspension, wherein the volume ratio of water to glycerin is 0.5, and continue to stir until it dissolves into a uniform and transparent solution.

[0029] The third step: inject the above-mentioned solution that has been left to remove air bubbles into the electrospinning container, the spinning temperature is room temperature, the output voltage of the high-voltage power supply is 28KV, and the feeding rate is 108μl / min. The distance between the wire heads is 12cm. Open the feeding device pump equipped with sodium alginate electrospinning stock solution, the jet stream is sprayed on the collector, the electrospinning process is stable, and the collector...

Embodiment 3

[0032] The first step: the sodium alginate with a viscosity of 5000 centipoise is a raw material, and the modifier is a mixture of glycerol and ethylene glycol (the volume ratio of glycerol and ethylene glycol is 3: 1), and the sodium alginate is mixed at room temperature Uniformly dispersed in the modifier, wherein the weight-to-volume ratio of sodium alginate to the mixed modifier is 3.0 g / ml%.

[0033] The second step: add the mixed solution of solvent water and ethanol (the volume ratio of water and ethanol is 2: 1, wherein the volume ratio of solvent (i.e. the total volume of water and ethanol) to modifying agent is 4: 3 in the suspension) , continue to stir until it dissolves into a homogeneous and transparent solution.

[0034] The third step: inject the above-mentioned solution that has been left to remove air bubbles into the electrospinning container, the spinning temperature is room temperature, the output voltage of the high-voltage power supply is 28KV, and the fe...

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Abstract

The invention belongs to the macromolecule material technology field, which relates to a preparation method of biodegradable and bio-absorbable macromolecule nanometer fiber non-woven fabric material, in particular to the preparation method of natural high polymer biological material, namely, sodium alginate electrostatic spinning solution, and the preparation method of pure sodium alginate nanometer fiber membrane material. The preparation method and the technical principle of the invention comprise the following steps: aiming at the characteristics of rigidity and stretching ability of the sodium alginate molecular chain in the aqueous solution, a solvent type strong polar modifying agent, namely, polyhydroxylated compound is induced in the aqueous solution of the sodium alginate, and through the strong polarity and the low surface tensile force, etc. of the compound, the physical property of the aqueous solution of the sodium alginate is effectively adjusted, thereby realizing that the transforming from the non-spinning of the aqueous solution of the sodium alginate to the spinning of the aqueous solution of the sodium alginate, and obtaining the even and smooth pure sodium alginate nanometer fiber membrane material.

Description

technical field [0001] The invention belongs to the technical field of polymer materials, and relates to a method for preparing a biodegradable and bioabsorbable polymer nanofiber non-woven material, in particular to a natural polymer biomaterial—preparation and preparation of a sodium alginate electrospinning stock solution. Its preparation method of pure sodium alginate nanofiber membrane material. Background technique [0002] Sodium alginate (SA) is a linear polyuronic acid extracted from natural brown algae, composed of α-L-guluronic acid (G unit) and β-D-mannuronic acid (M unit) A random copolymer composed of different GGGMMM segments linked by 1,4-glycosidic linkages. The concentration of G and M (G:M ratio) determines the characteristics of different structures and biocompatibility of SA. SA has the characteristics of polyanionic electrolytes, and its relative molecular weight is 10 6 Left and right, is a degradable biopolymer. Because of its good biocompatibilit...

Claims

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Application Information

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IPC IPC(8): C08J5/18C08L5/04D01F9/04D01D1/02D01D5/00
Inventor 贺爱华韩志超聂华荣
Owner INST OF CHEM CHINESE ACAD OF SCI
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