A size-controllable sodium alginate/polylysine self-assembled fiber

A technology of polylysine and sodium alginate, which is applied in fiber processing, fiber chemical characteristics, filament/thread forming, etc., can solve the problems that cannot meet the requirements of industrialization, poor mechanical properties of materials, and expensive equipment and equipment, and achieve Satisfy the effects of large-scale industrial production, high production efficiency, and no environmental pollution

Active Publication Date: 2021-09-28
JIANGNAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, gel-like or massive materials containing nanofibers are generally formed by electrostatic self-assembly technology, and most of them need to add many cross-linking agents (such as calcium chloride, aluminum chloride, polyisocyanate, glutaraldehyde, etc.) Realization, poor mechanical properties
In addition, electrospinning technology has high requirements on the properties of raw materials (solubility, conductivity, mechanical properties, etc.), and the mechanical properties of the obtained materials are poor, and its production efficiency is extremely low, requiring expensive equipment, and it cannot be industrialized. requirements

Method used

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  • A size-controllable sodium alginate/polylysine self-assembled fiber
  • A size-controllable sodium alginate/polylysine self-assembled fiber
  • A size-controllable sodium alginate/polylysine self-assembled fiber

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] A method for preparing a size-controllable sodium alginate / polylysine self-assembled fiber, comprising the steps of:

[0046] (1) Prepare sodium alginate solution:

[0047] Weigh a certain amount of sodium alginate and add it into water, stir well until the sodium alginate is completely dissolved, prepare a 1wt% sodium alginate solution, perform ultrasonic treatment to remove air bubbles, and set aside;

[0048] (2) Preparation of polylysine solution: Weigh a certain amount of polylysine and add it to deionized water, stir and dissolve to prepare a 2wt% polylysine solution for later use;

[0049] (3) Mixing of sodium alginate / polylysine: add the 1wt% sodium alginate and 2wt% polylysine solution prepared above into a beaker with an inner diameter of 35.1 mm at a ratio of 3:1, and mix them within 0.5 minutes. A self-assembled polymer film is formed at the interface of the two solutions;

[0050] (4) Preparation of fibers: the above-mentioned self-assembled polymer film wa...

Embodiment 2

[0053] A kind of preparation method of sodium alginate / polylysine self-assembled fiber with controllable size, such as figure 1 shown, including the following steps:

[0054] (1) Preparation of sodium alginate solution: Weigh a certain amount of sodium alginate and add it to water, fully stir until the sodium alginate is completely dissolved, prepare a 2wt% sodium alginate solution, perform ultrasonic treatment to remove air bubbles, and set aside;

[0055] (2) Preparation of polylysine solution: Weigh a certain amount of polylysine into water, stir and dissolve to prepare 1wt% polylysine solution, and set aside;

[0056] (3) Sodium alginate / polylysine mixing: add the above-mentioned 2wt% sodium alginate and 1wt% polylysine solution into a beaker with an inner diameter of 15.6 mm at a ratio of 1:5, and within 10 seconds A self-assembled polymer film is formed at the interface of the two solutions;

[0057] (4) Preparation of fibers: the above-mentioned self-assembled polymer...

Embodiment 3

[0062] A method for preparing a size-controllable sodium alginate / polylysine self-assembled fiber, comprising the steps of:

[0063] (1) Preparation of sodium alginate solution: Weigh a certain amount of sodium alginate and add it to water, fully stir until the sodium alginate is completely dissolved, prepare a 2wt% sodium alginate solution, perform ultrasonic treatment to remove air bubbles, and set aside;

[0064] (2) Preparation of polylysine solution: Weigh a certain amount of polylysine and add it to water, stir and dissolve to prepare a 5wt% polylysine solution for subsequent use;

[0065] (3) Mixing of sodium alginate / polylysine: add the 2wt% sodium alginate and 5wt% polylysine solution prepared above into a beaker with an inner diameter of 6.2 mm at a ratio of 5:1, and dissolve the two mixtures within 0.5 minutes. A self-assembled polymer film is formed at the interface of the two solutions;

[0066] (4) Preparation of fibers: the above-mentioned self-assembled polyme...

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Abstract

The invention discloses a size-controllable sodium alginate / polylysine self-assembled fiber, which belongs to the field of natural high molecular polymer fibers. The invention uses electrostatic self-assembly to form a polymer film in the interface of sodium alginate solution and polylysine solution, and the film is continuously aggregated in the interface to form fibers under the traction of external force. The method of the invention is environmentally friendly, simple in method, low in cost, high in production efficiency, has low requirements on instruments and equipment, and is suitable for industrialized production. The diameter of sodium alginate / polylysine fiber is proportional to the contact interface area of ​​the two solutions. It has good flexibility, high filamentation rate and strong tensile resistance. It is suitable for textile industry, food, medical treatment, antibacterial materials and Environmental adsorption materials and other fields.

Description

technical field [0001] The invention relates to a size-controllable sodium alginate / polylysine self-assembled fiber, which belongs to the field of natural high molecular polymer fibers. Background technique [0002] Various silks, films, daily necessities, tires, etc. produced from synthetic polymers based on petroleum and coal products are widely used in various fields, and the gross production value exceeds 4% of the total GDP, and has become an essential material for human society. However, plastics produced from petroleum-based polymers are increasingly polluting the environment because they are not biodegradable. According to statistics, among marine litter, it takes 6 weeks for newspaper products made of plant cellulose to completely biodegrade, while it takes as long as 450 years for waste such as synthetic polymer plastics to biodegrade. In recent decades, polymeric materials of natural origin have attracted increasing attention due to their wide range of sources, g...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D01F8/18D01F8/12D01D5/42
CPCD01D5/423D01F8/12D01F8/18
Inventor 王洪新黄鑫吴世嘉马朝阳王力陈静钰
Owner JIANGNAN UNIV
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