Method for preparing super absorbent resin with cross-linked structure by using potato starch as raw material

A technology of potato starch and superabsorbent resin, which is applied in the field of superabsorbent resin, can solve the problems of small variety and quantity, poor salt resistance, low gel strength, etc., to improve the state after water absorption, enhance the adsorption capacity, and absorb liquid The effect of good ability

Inactive Publication Date: 2010-02-03
CHIFENG TIANZE BIO TECH
View PDF0 Cites 39 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although my country has achieved certain results in the research of superabsorbent resins, there are still many problems, such as low water absorption of resins, poor salt resistance, low gel strength after water absorption, complex production processes, and high product

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
  • Method for preparing super absorbent resin with cross-linked structure by using potato starch as raw material
  • Method for preparing super absorbent resin with cross-linked structure by using potato starch as raw material
  • Method for preparing super absorbent resin with cross-linked structure by using potato starch as raw material

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0027] Example 1: Weigh 7.5g of sodium hydroxide, measure 22.5ml of deionized water, prepare a sodium hydroxide solution with a concentration of 25%, and neutralize 30.0g (28.6ml) under ice-water bath cooling and stirring. Remove the acrylic acid of the polymerization inhibitor. Weigh 5.0g potato starch, measure 25.0ml deionized water, mix evenly under stirring, gelatinize under heating (65℃), then cool to room temperature, add 80mg potassium persulfate and 2mgN,N'-methylene dipropylene The amide, the prepared acrylic acid and its sodium salt solution, and the gelatinized potato starch are stirred for 0.5 h under the protection of nitrogen to make them evenly mixed. Heat under stirring and control the heating speed to slowly increase the temperature of the water bath to make the reaction proceed fully. Stop stirring when the temperature reaches 80°C. After that, the temperature is gradually increased. When the water boils, continue to heat and keep it in a boiling water bath f...

Example Embodiment

[0028] Example 2: Weigh 10.0g of sodium hydroxide, measure 30.0ml of deionized water, prepare a sodium hydroxide solution with a concentration of 25%, and neutralize 30.0g (28.6ml) with cooling and stirring in an ice water bath Remove the acrylic acid of the polymerization inhibitor. Weigh 5.0g potato starch, measure 25.0ml deionized water, mix evenly under stirring, gelatinize under heating (65℃), then cool to room temperature, add 80mg potassium persulfate and 2mgN,N'-methylene dipropylene The amide, the prepared acrylic acid and its sodium salt solution, and the gelatinized potato starch are stirred for 0.5 h under the protection of nitrogen to make them evenly mixed. Heat under stirring and control the heating speed to slowly increase the temperature of the water bath to make the reaction proceed fully. Stop stirring when the temperature reaches 80°C. After that, the temperature is gradually increased. When the water boils, continue to heat and keep it in a boiling water b...

Example Embodiment

[0029] Example 3: Weigh 7.5g of sodium hydroxide, measure 22.5ml of deionized water, prepare a sodium hydroxide solution with a concentration of 25%, and neutralize 30.0g (28.6ml) with cooling and stirring in an ice-water bath Remove the acrylic acid of the polymerization inhibitor. Weigh 5.0g potato starch, measure 25.0ml deionized water, mix evenly under stirring, gelatinize under heating (65℃), then cool to room temperature, add 95mg potassium persulfate and 5mgN,N'-methylene dipropylene The amide, the prepared acrylic acid and its sodium salt solution, and the gelatinized potato starch are stirred for 0.5 h under the protection of nitrogen to make them evenly mixed. Heat under stirring and control the heating speed to slowly increase the temperature of the water bath to make the reaction proceed fully. Stop stirring when the temperature reaches 80°C. After that, the temperature is gradually increased. When the water boils, continue to heat and keep it in a boiling water ba...

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 discloses a method for preparing super absorbent resin with a cross-linked structure by using potato starch as the raw material, which comprises the following main processes: carrying out neutralization reaction between a sodium hydroxide solution and acrylic acid from which polymerization inhibitor is removed under the cooling of ice-water bath; mixing potato starch with de-ionizedwater and pasting the mixture; mixing the neutralized acrylic acid and the sodium salt solution thereof with the pasted potato starch; adding an evocating agent persulfate and a cross-linking agent N,N'- methylene-bisacrylamide; uniformly stirring the mixture under the protection of nitrogen; heating the mixture by water bath to rise the temperature so as to ensure that the potato starch and the acrylic acid and the sodium salt thereof generate graft copolymerization reaction under the protection of nitrogen; keeping the temperature of the reaction; and baking and crashing to obtain the superabsorbent resin with a cross-linked structure. Compared with similar products, the water absorption of the super absorbent resin is greatly enhanced and the super absorbent resin can absorb a certainamount of heavy metal ion. The super absorbent resin has great effect on the water conservation, the desert control, the environmental improvement and the like of soil in dry regions.

Description

technical field [0001] The present invention relates to the preparation method of superabsorbent resin used in agriculture, forestry, animal husbandry, gardening and daily necessities, in particular refers to the preparation of potato starch, acrylic acid, persulfate, N, N'-methylenebisacrylamide, hydrogen The invention discloses a method for preparing a superabsorbent resin with a cross-linked structure with sodium as the main raw material. Background technique [0002] The excellent water absorption and water retention properties of superabsorbent resin make it widely used in many fields. Disposable paper diapers and other sanitary products are the earliest application fields for superabsorbent resins, and they are still the largest consumer market for superabsorbent resins. Adding superabsorbent resin to the soil can change the aggregate structure of the soil, increase the water permeability and air permeability of the soil, and store the added water. It has attractive e...

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): C08F251/00C08K5/20
Inventor 温国华目仁更靳敏付渊杜青慧张伟
Owner CHIFENG TIANZE BIO TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap