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

Method for synthesizing superabsorbent resin with high potassium content by graft copolymerization of alkali gelatinization potato starch

A gelatinized potato and potato starch technology, which is applied in the field of simple preparation, can solve the problems of high product cost, low water absorption multiple, and low gel strength, and achieve the effects of poor repeatability, good liquid absorption capacity, and unstable water absorption

Inactive Publication Date: 2011-11-30
INNER MONGOLIA UNIVERSITY
View PDF0 Cites 0 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, compared with foreign countries, there is still a considerable gap, such as low water absorption of resins, poor salt resistance, low gel strength after water absorption, complex production processes, high product cost

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 synthesizing superabsorbent resin with high potassium content by graft copolymerization of alkali gelatinization potato starch
  • Method for synthesizing superabsorbent resin with high potassium content by graft copolymerization of alkali gelatinization potato starch
  • Method for synthesizing superabsorbent resin with high potassium content by graft copolymerization of alkali gelatinization potato starch

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Embodiment 1: take by weighing 0.27g sodium hydroxide, be dissolved in 10.0ml deionized water, prepare the sodium hydroxide solution that molar concentration of hydroxide is 0.675mol / L; Take by weighing 7.0g potassium hydroxide, dissolve in 35.0ml Prepare a potassium hydroxide solution in deionized water, and neutralize 30.0 g (28.52 ml) of acrylic acid from which the polymerization inhibitor has been removed under ice-water bath cooling and stirring conditions to obtain acrylic acid and potassium acrylic acid with a neutralization degree of acrylic acid of 30%. Salt solution: Weigh 5.0g of potato starch, mix it with 15.0ml of deionized water, stir for 0.5h, and then use 10-15 秒 / 滴 The dripping speed gelatinized potato starch milk; The alkali gelatinized potato starch prepared is mixed with acrylic acid and potassium salt solution thereof, added 14.3ml deionized water, added 75mg potassium persulfate, 7ml concentration is 2mg / ml of N, N'-methylenebisacrylamide solution, ...

Embodiment 2

[0019] Embodiment 2: experimental condition is the same as embodiment 1, and difference is to take by weighing sodium hydroxide 0.24g, be dissolved in 10.0ml deionized water, prepare the sodium hydroxide solution that molar concentration of hydroxide is 0.600mol / L, this The deionized water absorption capacity of the high potassium-containing superabsorbent resin prepared in the example is 1120 g / g.

Embodiment 3

[0020] Embodiment 3: experimental condition is the same as embodiment 1, difference is to take by weighing sodium hydroxide 0.25g, be dissolved in 10.0ml deionized water, prepare the sodium hydroxide solution that molar concentration of hydroxide is 0.625mol / L, this The deionized water absorption capacity of the high potassium-containing superabsorbent resin prepared in the example is 1200 g / g.

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 present invention discloses a novel technology for synthesizing super absorbent resin with high potassium content, which mainly comprises the following steps: preparing alkali solution at a certain concentration, dropwise adding the alkali solution to potato starch at room temperature to obtain alkali gelatinized potato starch, and heating in water bath under nitrogen atmosphere to carry out graft copolymerization reaction on alkali gelatinization potato starch as well as acrylic acid and potassium salt thereof to obtain super absorbent resin with high potassium content, wherein the obtained resin has good liquid-absorption ability, and the highest deionized water absorption amount is 1200-1500 times. In the invention, alkali solution is completely used to gelatinize potato starch milk at room temperature, and the alkali gelatinization potato starch obtained by the method is used for synthesizing the super absorbent resin with high potassium content for the first time, compared with other preparation methods of super absorbent resin, the method is simple process, low in energy consumption and easy in operation and control, thus expanding a new way for producing the super absorbent resin with high potassium content in large scale.

Description

technical field [0001] The invention relates to a preparation method of a new functional polymer material-superabsorbent resin used in the fields of agriculture, forestry, animal husbandry, horticulture, etc., especially refers to the synthesis of potato starch, acrylic acid, potassium hydroxide, and sodium hydroxide as main raw materials. The invention discloses a new and simple preparation method of a superabsorbent resin with high potassium content. Background technique [0002] Super absorbent resin was developed in the late 1960s. In 1961, the Northern Research Institute of the United States Department of Agriculture grafted starch to acrylonitrile for the first time to make a HSPAN starch-acrylonitrile graft copolymer that surpassed traditional water-absorbing materials. In 1978, Japan's Sanyo Chemical Co., Ltd. took the lead in using superabsorbent polymers for disposable diapers, which has attracted great attention from scientists all over the world. [0003] Super...

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): C08F251/00C08F220/06C08F222/38C08B31/00
Inventor 温国华目仁更王智鑫张思思申洋洋李延楠朱如月杜静静张伟林波
Owner INNER MONGOLIA UNIVERSITY