Preparation method of agar nanofibers

A technology of nanofibers and agar, which is applied in the field of preparation of agar nanofibers. It can solve the problems of low mechanical strength of fibers, generation of cavities, and mechanical properties of agar fibers that cannot meet the requirements, and achieve small fiber diameter, smooth surface, and mechanical properties. The effect of performance improvement

Pending Publication Date: 2021-10-12
苏州合祥纺织科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In the prior art, the agar fiber is usually prepared by the wet spinning process. After the high polymer is prepared into the spinning solution, the spinning solution is directly sprayed into the coagulation bath through the spinneret to coagulate into silk. , voids are often produced during solidification, resulting in low mechanical strength of the fibers, and the mechanical properties of agar fibers prepared by wet spinning method often cannot meet the requirements

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] (1) Agar is added in DMSO, stirred at 80° C. to obtain an agar solution with a concentration of 25 wt%, and then filtered and degassed to obtain an agar spinning solution;

[0017] (2) Utilize the syringe pump to feed the spinning solution obtained in step (1) into the spinning box body through the metering pump at a speed of 8mL / h, and the spinning solution forms a thin stream when it is extruded from the spinneret, and simultaneously The compressed gas is introduced into the spinner box, the pressure of the compressed gas is 0.30MPa, and the fine spinneret flow obtained enters the spinner box, and under the joint action of the high-pressure air flow and the spinner box, the solvent is volatilized to form fibers, and the fan is used to The resulting suction action collects the fibers on the receiving plate to obtain agar nanofibers;

[0018] (3) The nanofibers obtained in the step (2) are repeatedly washed three times with ethanol / water solution, and then dried in an o...

Embodiment 2

[0022] (1) Agar is added in DMSO, stirred at 80° C. to obtain an agar solution with a concentration of 30 wt%, and then filtered and degassed to obtain an agar spinning solution;

[0023] (2) Utilize the syringe pump to feed the spinning solution obtained in step (1) into the spinning box body through the metering pump at a speed of 8mL / h, and the spinning solution forms a thin stream when it is extruded from the spinneret, and simultaneously The compressed gas is introduced into the spinner box, the pressure of the compressed gas is 0.30MPa, and the fine spinneret flow obtained enters the spinner box, and under the joint action of the high-pressure air flow and the spinner box, the solvent is volatilized to form fibers, and the fan is used to The resulting suction action collects the fibers on the receiving plate to obtain agar nanofibers;

[0024] (3) The nanofibers obtained in the step (2) are repeatedly washed three times with ethanol / water solution, and then dried in an o...

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PUM

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Abstract

The invention provides a preparation method of agar nanofibers. Fibers are prepared through a jet spinning method, the fibers obtained through the jet spinning method are relatively small in diameter, good in fiber appearance and smooth in surface, cavities cannot be generated, and the mechanical property of the fibers can meet application requirements.

Description

technical field [0001] The invention belongs to the field of nanofibers, in particular to a preparation method of agar nanofibers. Background technique [0002] Agar gum is the main economic component of marine red algae. As a kind of seaweed gel product with a wide range of applications, it is widely used in food, medicine, health care, cosmetics, printing and dyeing and other fields, and has broad application and market prospects. The species of red algae that can be applied to agar processing include more than 30 species, such as Asparagus, Asparagus, Gracilaria brittle, and Gracilaria taro root. Gracilaria and taro root Gracilaria. [0003] Jet spinning technology is a new nanofiber preparation technology that can obtain spun fibers with smaller diameters. The polymer solution is used as the object, and the high-speed airflow is used as the driving force. Under the action of airflow, a polymer jet is formed, and the jet is further drawn and thinned in the receiving dev...

Claims

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Application Information

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IPC IPC(8): D01D5/04D01D10/06D01D1/02D01F9/00
CPCD01D5/04D01D10/06D01D1/02D01F9/00
Inventor 张兴光王威徐正东景晓辉
Owner 苏州合祥纺织科技有限公司
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