Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

A kind of polyacrylic rare earth fluorescent gel and preparation method thereof

A technology of polyacrylic acid and rare earth fluorescence, which is applied in the direction of chemical instruments and methods, luminescent materials, etc., can solve the problems of inability to form unstable, limit the types and applications of polyacrylic acid gels, and overly strong electrostatic interaction with mineral salts, etc. Achieve the effects of easy operation, simple preparation and great application prospects

Active Publication Date: 2021-07-06
JIANGNAN UNIV
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, only +2-valent metal ions can meet the conditions for gel formation, and common +3-valent metal ions cannot form the above-mentioned gels due to strong electrostatic interactions or instability of mineral salts.
Thus, the types and applications of polyacrylic acid gels are limited.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A kind of polyacrylic rare earth fluorescent gel and preparation method thereof
  • A kind of polyacrylic rare earth fluorescent gel and preparation method thereof
  • A kind of polyacrylic rare earth fluorescent gel and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] A kind of polyacrylic rare earth fluorescent gel, its preparation method comprises the steps:

[0032] At room temperature, configure a total of 40 mL of a mixed aqueous solution containing 0.3 mol / L polyacrylic acid (molecular weight: 250 000) and 0.1 mol / L terbium chloride. Under vigorous stirring (stirring speed is 600 rpm), 10 mL of 0.1 mol / L sodium carbonate The aqueous solution was dripped into the mixed solution at a rate of 0.1 mL / min, and a milky white gel was gradually formed. The resulting gel was repeatedly washed with deionized water to obtain a pure polyacrylic acid rare earth composite gel.

[0033] figure 1 It is the optical picture of the gel prepared in this embodiment under visible light and the optical picture under the excitation of 365nm ultraviolet light; from figure 1 It can be seen that the gel produced bright and uniform green fluorescence under UV light excitation.

[0034] Figure 4 It is the emission spectrogram of the gel prepared by th...

Embodiment 2

[0036] A kind of polyacrylic rare earth fluorescent gel, its preparation method comprises the steps:

[0037] Under room temperature conditions, configure a total of 40 mL of a mixed aqueous solution containing 0.3 mol / L polyacrylic acid (molecular weight 250 000), 0.1 mol / L europium chloride, and 10 mL of 0.1 mol / L sodium carbonate aqueous solution under vigorous stirring (stirring speed is 600 rpm) Drop it into the mixed solution at a rate of 0.1mL / min, and gradually form a milky white gel. The resulting gel was repeatedly washed with deionized water to obtain a pure polyacrylic acid rare earth composite gel.

[0038] figure 2 It is the optical picture of the gel prepared in this embodiment under visible light and the optical picture under the excitation of 365nm ultraviolet light; from figure 2 It can be seen that the gel produced bright and uniform red fluorescence under UV light excitation.

[0039] image 3 It is the optical picture of the gel prepared in this exam...

Embodiment 3

[0042] A kind of polyacrylic rare earth fluorescent gel, its preparation method comprises the steps:

[0043] Under room temperature conditions, configure a total of 40 mL of a mixed aqueous solution containing 0.5 mol / L polyacrylic acid (molecular weight 250 000), 0.1 mol / L lanthanum chloride, and 20 mL of 0.1 mol / L sodium carbonate aqueous solution under vigorous stirring (stirring speed is 600 rpm) Drop it into the mixed solution at a rate of 0.1mL / min, and gradually form a milky white gel. The resulting gel was repeatedly washed with deionized water to obtain a pure polyacrylic acid rare earth composite gel.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention belongs to the technical field of polymer materials, and in particular relates to a polyacrylic rare earth fluorescent gel and a preparation method thereof. The preparation method comprises preparing a mixed solution of polyacrylic acid and a rare earth salt, adding sodium carbonate solution dropwise into the mixed solution under stirring, gradually forming a hydrogel along with the addition of the sodium carbonate solution, and washing to obtain the product; The molecular weight of polyacrylic acid is 100,000-250,000. The polyacrylic acid gel prepared by the present invention has both the unique optical properties of rare earth ions and the plasticity of physical cross-linked gels. It is easy to prepare, easy to operate, and has universal applicability to rare earth ions. It is used in biomedicine, optical devices, anti-counterfeiting, etc. It has a great application prospect.

Description

technical field [0001] The invention belongs to the technical field of polymer materials, and in particular relates to a polyacrylic rare earth fluorescent gel and a preparation method thereof. Background technique [0002] Polyacrylic acid gel is widely used, non-toxic, environmentally friendly, cheap and easy to obtain, and plays an important role in adhesives, coatings, dressings, etc. For example, the main component of a wide variety of commercial high molecular polymer carbomers is polyacrylic acid gel. Carbopol was developed by Novo Corporation of the United States, including Carbopol series of rheology modifiers and Pemulen series of polymer emulsifiers, which are widely used in emulsions, creams, and medical drug delivery. [0003] The research results show that in the presence of polyacrylic acid with a certain molecular weight, alkaline earth metals and some transition metals can form amorphous mineral salt precipitates, and initiate self-assembly between polyacry...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): C08J3/075C08L33/02C08K3/26C09K11/02C09K11/78
CPCC08J3/075C08J2333/02C08K3/26C08K2201/011C09K11/025C09K11/7701C09K11/7729C09K11/7744
Inventor 陈明清周家华
Owner JIANGNAN UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com