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Electrostatic spinning method for preparing luminous nano composite fiber film containing rare earth polyacid and application of electrostatic spinning method

A nano-composite fiber, rare earth polyacid technology, applied in fiber processing, fluorescence/phosphorescence, material excitation analysis, etc., to achieve wide application prospects, strong operability, and the effect of reducing fluorescence quenching

Active Publication Date: 2013-08-28
BEIJING UNIV OF CHEM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It has been reported to use electrospinning technology to blend water-soluble polymers with some water-soluble inorganic materials. So far, there has been no report on the preparation of nanocomposite fiber membranes by blending water-insoluble polymers and water-soluble polyacids.

Method used

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  • Electrostatic spinning method for preparing luminous nano composite fiber film containing rare earth polyacid and application of electrostatic spinning method
  • Electrostatic spinning method for preparing luminous nano composite fiber film containing rare earth polyacid and application of electrostatic spinning method
  • Electrostatic spinning method for preparing luminous nano composite fiber film containing rare earth polyacid and application of electrostatic spinning method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] 1. Weigh 23g of dimethylformamide in a 250ml Erlenmeyer flask, then weigh 2g of polyacrylonitrile with a molecular weight of 15,000 and slowly add it under stirring conditions, place the Erlenmeyer flask in an oil bath stirring device, 60 Stir at ℃ for 12h until the polyacrylonitrile is completely dissolved;

[0027] 2. Weigh 100mg of Na 9 wxya 10 o 36 32H 2 O powder, it was added in the polyacrylonitrile solution prepared in step 1, magnetically stirred at room temperature for 6h, until Na 9 wxya 10 o 36 32H 2 The O powder was completely dissolved, and the solution was light yellow, clear and transparent, and EuW was obtained. 10 / Polyacrylonitrile spinning solution;

[0028] 3. Put the spinning solution obtained in step 2 into the glass spinneret of the electrospinning equipment for successive spinning. The inner diameter of the glass spinneret head is 0.6mm, with the aluminum sleeve as the anode and the aluminum foil as the cathode as the receiving plate To ...

Embodiment 2

[0030] The nanocomposite fiber membrane is prepared in the same manner as in Example 1, except that Na 9 wxya 10 o 36 32H 2 O powder is 200mg, the distance from the needle to the receiving plate is 15cm, and the spinning voltage is 17kv. A nanocomposite fiber membrane with a mass ratio of rare earth polyacid to polyacrylonitrile of 0.1 was obtained, and the average diameter of the composite fiber was 198 nm.

Embodiment 3

[0032] The nanocomposite fiber membrane is prepared in the same manner as in Example 1, except that Na 9 wxya 10 o 36 32H 2O powder is 300mg, the distance from the needle to the receiving plate is 20cm, and the spinning voltage is 20kv. A nanocomposite fiber membrane with a mass ratio of rare earth polyacid to polyacrylonitrile of 0.15 was obtained, and the average diameter of the composite fiber was 167 nm.

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Abstract

The invention discloses a luminous nano composite fiber film containing rare earth polyacid and a method for preparing the luminous nano composite fiber film, and belongs to the field of inorganic-organic composite materials. The method includes the steps that a polyacrylonitrile solution is prepared, the rare earth polyacid is added to the solution, and the rare earth polyacid / polyacrylonitrile luminous nano composite fiber film is prepared by means of the electrostatic spinning technology. The method achieves the fact that rare earth polyacid functional molecules and water-insoluble polymer polyacrylonitrile form the nano composite fiber film by means of electrostatic spinning for the first time, and expands the application field of the rare earth polyacid and polymer materials. The thickness of the prepared fiber film is controllable in a micron grade, meanwhile the space confinement function in filaments of nano composite fibers is used, and solidification of rare earth polyacid luminescent molecules is achieved. The luminescence intensity of the fiber film can be controlled according to changes of spinning time, and the fiber film is strong in operability. The fiber film can serve as a pH sensitive gas sensing material, and is applied in novel photoelectric equipment.

Description

technical field [0001] The invention belongs to the technical field of inorganic-organic composite materials, and in particular relates to an electrospinning method to prepare a luminous nanocomposite fiber film containing rare earth polyacids and its application in pH-sensitive gas-sensitive materials. Background technique [0002] Polyacid compounds are a class of multimetal oxides containing V, Mo, W and other metals. Isopolyanions formed by the condensation of the same oxoacid ions are called isopolyacids. The condensation of different types of oxyacid anions is called heteropolyanion, and the acid is called heteropolyacid. At present, it is known that the atoms of nearly 70 kinds of elements can be used as heteroatoms in heteropolyacids, including all the first series transition elements, almost all the second and third series transition elements, plus B, Al, Ga, Si , Ge, Sn, P, As, Sb, Bi, Se, Te, I, etc. And each heteroatom can often exist in heteropolyanions in di...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D04H1/4382D04H1/728D01D5/00G01N21/64
Inventor 宋宇飞王晓婷陈伟
Owner BEIJING UNIV OF CHEM TECH
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