Humidity driver based on polyaspartic acid nanofiber membrane and preparation method thereof

A nanofiber membrane, polyaspartic acid technology, applied in the direction of fiber type, fiber processing, textile and papermaking, etc., can solve the problems of poor sensitivity, slow response and high preparation cost of the humidity driver, and achieve good humidity responsiveness and response. Fast and stable performance

Active Publication Date: 2021-12-28
JIAXING UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The humidity driver prepared by the humidity driver preparation method provided by the related technology not only relies heavily on humidity-sensitive materials, but also has extremely high requirements on the material structure design to realize the driving behavior; moreover, the humidity driver has a complicated preparation process and a high preparation cost , it is more difficult to mass-produce and popularize the technical problems, and the prepared humidity driver is likely to have poor sensitivity and slow response technical problems

Method used

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  • Humidity driver based on polyaspartic acid nanofiber membrane and preparation method thereof
  • Humidity driver based on polyaspartic acid nanofiber membrane and preparation method thereof
  • Humidity driver based on polyaspartic acid nanofiber membrane and preparation method thereof

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preparation example Construction

[0031] figure 1 It is a method flow chart of a method for preparing a humidity driver based on a polyaspartic acid nanofiber membrane shown according to an exemplary embodiment, such as figure 1 Shown, the preparation method of the humidity driver based on polyaspartic acid nanofiber membrane comprises:

[0032] Step 101: After adding a preset mass of nanoparticles or metal salts to a container containing a solvent, stir at room temperature until completely dissolved, then add polysuccinimide to the container, and continue stirring until the polysuccinimide The imine was completely dissolved and configured to obtain an electrospinning solution.

[0033] Step 102: Electrospinning the electrospinning solution to obtain a polysuccinimide nanofiber membrane.

[0034] Step 103: placing the polysuccinimide nanofiber membrane in a container containing a crosslinking agent solution for crosslinking, and then placing the crosslinked polysuccinimide nanofiber membrane in an alkaline s...

Embodiment 1

[0049] (1) Change CH 3 After adding COOAg to the container containing N,N-dimethylformamide, stir at room temperature until CH 3COOAg is completely dissolved, then adds polysuccinimide to the container, and continues to stir until the polysuccinimide is completely dissolved, and is configured to obtain an electrospinning solution. The mass of polysuccinimide in the electrospinning solution is The concentration is 30%, CH 3 The content of COOAg is 10% of the mass of polysuccinimide.

[0050] (2) Electrospinning the electrospinning solution to obtain a polysuccinimide nanofiber membrane.

[0051] (3) Put the polysuccinimide nanofiber membrane into a container filled with 0.3 mol / L ethylenediamine solution for crosslinking, and then place the crosslinked polysuccinimide nanofiber membrane in Hydrolysis is carried out in 0.11mol / L sodium hydroxide solution to obtain a polyaspartic acid nanofiber membrane in a swollen state.

[0052] (4) Rinse the polyaspartic acid nanofiber me...

Embodiment 2

[0054] (1) SiO 2 After adding the nanoparticles to the container containing N,N-dimethylformamide, stir at room temperature until SiO 2 The nanoparticles are completely dissolved, and then polysuccinimide is added to the container, and the stirring is continued until the polysuccinimide is completely dissolved, and an electrospinning solution is obtained. The polysuccinimide in the electrospinning solution is The mass concentration is 30%, CH 3 The content of COOAg is 3% of the mass of polysuccinimide.

[0055] (2) Electrospinning the electrospinning solution to obtain a polysuccinimide nanofiber membrane.

[0056] (3) Put the polysuccinimide nanofiber membrane into a container filled with 0.5 mol / L ethylenediamine solution for crosslinking, and then place the crosslinked polysuccinimide nanofiber membrane in Hydrolysis is carried out in 0.5 mol / L sodium hydroxide solution to obtain a polyaspartic acid nanofiber membrane in a swollen state.

[0057] (4) Rinse the polyaspar...

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Abstract

The invention discloses a humidity driver based on a polyaspartic acid nanofiber membrane and a preparation method thereof, and relates to the technical field of stimulus response drivers. The present invention provides a humidity driver based on polyaspartic acid nanofiber membrane and its preparation method, by using polyaspartic acid intermediate polysuccinimide as spinning high polymer, and spinning in electrospinning solution The method of adding nanoparticles or metal salts to electrospinning to prepare polysuccinimide nanofiber membranes, and then obtain polyaspartic acid nanofiber membranes in a swollen state through cross-linking and hydrolysis, and polyaspartic acid nanofiber membranes after drying The fibers in the nanofiber membrane are bonded together to form a humidity actuator based on polyaspartic acid nanofiber membrane. A humidity actuator with good humidity responsiveness can be efficiently prepared through a simple preparation process, and the prepared humidity actuator has sensitivity. High, fast response, stable performance technical effects.

Description

technical field [0001] The invention relates to the technical field of stimulus response actuators, in particular to a humidity actuator based on polyaspartic acid nanofiber membranes and a preparation method thereof. Background technique [0002] The intelligence of materials is an inevitable development trend of functional materials, and it is also one of the important directions for the development of modern high-tech new materials. Smart materials generally refer to materials that can change under the influence of external stimuli, such as light, heat, electricity, pH, humidity, etc., that is, materials that have the ability to perceive and respond to the external environment. [0003] With the development of economy and science, smart materials have shifted from simple external environment stimulus response to preparation and application. Stimulus-response intelligent drives based on various materials have been successfully prepared. Intelligent valve switches and othe...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D06M13/332D06M11/38D06M13/144D04H3/009D04H3/03D06M101/30
Inventor 张彩丹
Owner JIAXING UNIV
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