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POSS modified nanofiber membrane and preparation method and application thereof

A nanofiber membrane, nanofiber technology, applied in fiber processing, fiber chemical characteristics, rayon manufacturing, etc., can solve the problems of low reactivity, poor fiber membrane toughness, low mechanical strength, etc., to improve thermal stability and mechanical strength. the effect of strength

Active Publication Date: 2018-04-20
GUANGZHOU CHEM CO LTD CHINESE ACADEMY OF SCI +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, how to combine POSS and fiber membranes to overcome the disadvantages of poor toughness, low mechanical strength, low reactivity and relatively single function of fiber membranes is the direction of research by those skilled in the art.

Method used

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  • POSS modified nanofiber membrane and preparation method and application thereof
  • POSS modified nanofiber membrane and preparation method and application thereof
  • POSS modified nanofiber membrane and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] (1) In a 25ml serum bottle, use a graduated cylinder to measure 4ml N,N-dimethylacetamide (DMAc) and 6ml acetone (ACE) to prepare a mixed solvent, and weigh the mass ratio according to the solution mass concentration of 18wt.%. 5:1 PVDF 1.31g and PMMA 0.26g, then pour the weighed PVDF and PMMA into the mixed solvent, put it into the magnet and heat it to 50°C with a heatable magnetic stirrer to stir and dissolve, fully dissolve and cool to room temperature Stirring was continued for 18 hours to obtain a homogeneous polymer electrospinning solution.

[0034] (2) According to the total mass of PVDF and PMMA, determine the POSS functional monomer mass concentration 2wt.%, take by weighing respectively 15.7 mg of MA-POSS and OAPS with a mass ratio of 1:1, measure 10 ml of dichloromethane (DCM ) as a solvent, dissolve the weighed MA-POSS and OAPS functional monomers in DCM, put them into the magnetron and stir and dissolve at room temperature with a magnetic stirrer for 3h t...

Embodiment 2

[0037] (1) In a 25ml serum bottle, use a graduated cylinder to measure 4ml N,N-dimethylacetamide (DMAc) and 6ml acetone (ACE) to prepare a mixed solvent, and weigh the mass ratio according to the solution mass concentration of 18wt.%. 5:1 PVDF 1.31g and PMMA 0.26g, then pour the weighed PVDF and PMMA into the mixed solvent, put it into the magnet and heat it to 50°C with a heatable magnetic stirrer to stir and dissolve, fully dissolve and cool to room temperature Stirring was continued for 18 hours to obtain a homogeneous polymer electrospinning solution.

[0038] (2) According to the total mass of PVDF and PMMA, determine POSS functional monomer mass concentration 5wt.%, take by weighing respectively MA-POSS 19.62mg and OAPS 58.88mg that mass ratio is 1:3, measure the dichloromethane of 10ml ( DCM) was used as a solvent, and the weighed MA-POSS and OAPS functional monomers were dissolved in DCM, put into a magnet and stirred and dissolved at room temperature with a magnetic s...

Embodiment 3

[0041] (1) In a 25ml serum bottle, use a graduated cylinder to measure 4ml N,N-dimethylacetamide (DMAc) and 6ml acetone (ACE) to prepare a mixed solvent, and weigh the mass ratio according to the solution mass concentration of 18wt.%. 3.2:1 PVDF 1.20g and PMMA 0.37g, then pour the weighed PVDF and PMMA into the mixed solvent, put it into the magnet and heat it to 50°C with a heatable magnetic stirrer to stir and dissolve, fully dissolve and cool to room temperature Stirring was continued for 18 hours to obtain a homogeneous polymer electrospinning solution.

[0042] (2) According to the total mass of PVDF and PMMA, determine POSS functional monomer mass concentration 8wt.%, take by weighing MA-POSS 41.87mg and OAPS 83.73mg that mass ratio is 1:2 respectively, measure the dichloromethane ( DCM) was used as a solvent, and the weighed MA-POSS and OAPS functional monomers were dissolved in DCM, put into a magnet and stirred and dissolved at room temperature with a magnetic stirrer...

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Abstract

The invention belongs to the field of nanofiber membranes, and discloses a POSS modified nanofiber membrane and a preparation method and application thereof. The preparation method comprises the following steps: dissolving PVDF and PMMA into an organic solvent to obtain an electrostatic spinning solution; dissolving functional monomers of MA-POSS and OAPS into the organic solvent to obtain an electrostatic spraying solution; adding a photoinitiator in the electrostatic spinning solution, then placing the electrostatic spinning solution and the electrostatic spraying solution in an electrostatic spinning machine together, carrying out electrostatic spinning and electrostatic spraying simultaneously under the condition of ultraviolet irradiation; and after spinning is finished, drying the obtained fiber membrane to obtain the POSS modified nanofiber membrane. The nanofiber membrane is modified by the functional monomers of MA-POSS and OAPS, and the thermals stability and mechanical strength of the nanofiber membrane can be improved remarkably; and reaction activity, separation and adsorption functions and the like can be given for the spinning fiber membrane, and thus, the application field of the spinning fiber membrane is expanded.

Description

technical field [0001] The invention belongs to the field of nanofiber membrane materials, and in particular relates to a POSS modified nanofiber membrane and its preparation method and application. Background technique [0002] Electrospinning (Electrospinning) refers to the production of special fibers in which polymer solution / melt droplets overcome their own surface tension and viscoelastic force from a spherical shape to a conical shape (Taylor cone) under the action of a high-pressure electrostatic field. craft. Electrospinning is one of the most simple and effective methods for preparing polymer nanofiber membranes today. Continuous fibers can be prepared directly from polymers and composite materials, and the prepared fibers have nanometer sizes that cannot be achieved by other materials, generally in the range of tens of nanometers to Between thousands of nanometers, the nanofiber film prepared by it generally exists in the form of non-woven fabrics. The main chara...

Claims

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Application Information

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IPC IPC(8): D04H1/4382D04H1/728D01D5/00D01F1/10D01F8/10
CPCD01D5/003D01D5/0061D01D5/0092D01F1/10D01F8/10D04H1/4382D04H1/728
Inventor 许凯刘凌利高树曦桂雪峰孙龙凤
Owner GUANGZHOU CHEM CO LTD CHINESE ACADEMY OF SCI
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