Unlock instant, AI-driven research and patent intelligence for your innovation.

Preparation method of sodium alginate/polyvinyl alcohol@polyacrylamide core-shell structure gel sphere and application of preparation method

A polyacrylamide and polyvinyl alcohol technology, applied in chemical instruments and methods, other chemical processes, adsorption water/sewage treatment, etc., can solve the problems of low mechanical strength and small adsorption capacity, and achieve easy separation and recovery, easy Preserve and solve the effect of difficult solid-liquid separation

Active Publication Date: 2018-06-22
WUHAN UNIV
View PDF3 Cites 6 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the single sodium alginate adsorbent has disadvantages such as low mechanical strength and small adsorption capacity.

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
  • Preparation method of sodium alginate/polyvinyl alcohol@polyacrylamide core-shell structure gel sphere and application of preparation method
  • Preparation method of sodium alginate/polyvinyl alcohol@polyacrylamide core-shell structure gel sphere and application of preparation method
  • Preparation method of sodium alginate/polyvinyl alcohol@polyacrylamide core-shell structure gel sphere and application of preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] At room temperature, add 2g of sodium alginate to 100ml of polyvinyl alcohol solution with a mass fraction of 1%, and magnetically stir for 24 hours to obtain a mixed solution A; under stirring conditions, add the mixed solution A dropwise to a 400ml mass fraction by injection In 5% calcium chloride solution, form gel ball, after continuing to harden for 24h, wash off the calcium ion remaining on the surface of composite gel ball with distilled water; Gained composite gel ball is added into 200ml mass fraction and be 1% anionic polymer In the acrylamide solution, after magnetic stirring for 12 hours, the mixture B was obtained; the whole mixture B was transferred to 200ml of glutaraldehyde solution with a mass fraction of 2%, to obtain the mixture C; in a constant temperature water bath at 50°C, mechanically stirred for 1 hour; Heat and filter to obtain the gel ball product, rinse repeatedly with 250ml distilled water and 50ml ethanol several times; dry the obtained gel ...

Embodiment 2

[0041] According to the method of Example 1, the mass fraction of the polyacrylamide solution was adjusted to 0.5%, and the obtained product was represented by SA / PVA@PAM(0.5).

Embodiment 3

[0043] According to the method of Example 1, the mass fraction of the polyacrylamide solution was adjusted to 1.5%, and the obtained product was represented by SA / PVA@PAM (1.5).

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 provides a preparation method of a sodium alginate / polyvinyl alcohol@polyacrylamide core-shell structure gel sphere. The preparation method comprises the following steps: adding a mixture solution of sodium alginate and polyvinyl alcohol into a calcium chloride solution to form a compound gel sphere; adding the compound gel sphere into a polyacrylamide solution, stirring, integrallytransferring the mixture to a glutaraldehyde solution, carrying out a reaction to obtain the sodium alginate / polyvinyl alcohol@polyacrylamide core-shell structure gel sphere. The polyacrylamide is wrapped around the surface of the sodium alginate / polyvinyl alcohol gel sphere, the polyacrylamide contains a large quantity of amino groups and oxygroups, so that the functionalization of the sodium alginate / polyvinyl alcohol gel sphere is realized, the adsorptive property of pollutants is improved, meanwhile, due to the intermolecular and intra-crosslinking of glutaraldehyde, the hydrophilcity of the core-shell structure gel sphere is reduced, the stability is improved, and the recycling is promoted.

Description

technical field [0001] The invention belongs to the technical field of preparation of polymer compounds and environmental protection engineering, and specifically relates to a preparation method and application of sodium alginate / polyvinyl alcohol@polyacrylamide core-shell structure gel balls. Background technique [0002] With the rapid development of my country's metallurgy, electroplating, pesticide and textile industries, a large amount of heavy metal wastewater has been discharged into water bodies, and water environmental pollution has become an urgent problem for environmental workers. Heavy metals have the characteristics of bioaccumulation and biomagnification. They can be enriched in the human body through food chains and other channels, causing damage to human metabolism and nerves. [0003] Adsorption method has many advantages such as wide source of raw materials, convenient operation, simple treatment process, etc. It is one of the important development directi...

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
IPC IPC(8): B01J20/26B01J20/28C02F1/28C02F101/20
Inventor 王弘宇张伟周金平
Owner WUHAN UNIV