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

A kind of superabsorbent resin containing zinc element and preparation method thereof

A technology of superabsorbent resin and elements, applied in chemical instruments and methods, organic fertilizers, applications, etc., can solve the problems of difficult plant absorption, reduce root absorption of zinc, plant zinc deficiency, etc., and achieve easy control of reaction and biodegradability Strong, high water absorption effect

Active Publication Date: 2018-10-19
ANHUI AGRICULTURAL UNIVERSITY
View PDF14 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In sandy land, barren mountains or soils with heavy rain erosion, zinc salts are less and easily lost; in alkaline soils, zinc salts are often transformed into insoluble states, which are not easily absorbed by plants; in addition, the soil is too wet and the ventilation is not good , will also reduce the ability of roots to absorb zinc, these conditions can cause zinc deficiency symptoms in plants

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] (1) 470.4mg of zinc sulfate heptahydrate (ZnSO 4 ·7H 2 O) Dissolve in 95g of water, add 5g of waxy cornstarch, gelatinize at 80°C for 0.5 to 1h, and wait for the temperature to drop to room temperature to prepare 5% waxy cornstarch paste. In addition, any concentration of waxy corn starch paste between 1% and 15% can be used.

[0027] (2) Weigh 20 g of acrylic acid, add 35 g of 30% sodium hydroxide under ice bath to neutralize the acrylic acid.

[0028] (3) Mix the waxy cornstarch paste obtained in step (1) with the neutralized acrylic acid obtained in step (2), and add 2.5mL of horseradish peroxidase, 2.5mL of hydrogen peroxide, and 0.010g of N , N'-methylenebisacrylamide, under the protection of nitrogen, react at a constant temperature of 30°C for 5h.

[0029] (4) The product obtained in step (3) is taken out, dried and pulverized to obtain a superabsorbent resin grafted with waxy cornstarch acrylic acid.

[0030] In the obtained superabsorbent resin containing z...

Embodiment 2

[0035] (1) Dissolve 632.6mg of chelated zinc, for example, sodium zinc edetate in 95g of water, add 5g of potato starch, gelatinize at 95°C for 0.5 to 1h, and wait until the temperature drops to room temperature to obtain 5% of potato starch paste. In addition, any concentration of potato starch paste between 1% and 15% can be used.

[0036] (2) Weigh 20 g of acrylic acid, add 35 g of 30% sodium hydroxide under ice bath to neutralize the acrylic acid.

[0037] (3) Mix the potato starch paste obtained in step (1) with the neutralized acrylic acid obtained in step (2), and add 3.5 mL of horseradish peroxidase, 3.5 mL of hydrogen peroxide, and 0.010 g of N in turn under stirring. N'-methylenebisacrylamide was reacted at 25°C for 9 hours under the protection of nitrogen.

[0038] (4) The product obtained in step (3) is taken out, dried and pulverized to obtain a superabsorbent resin grafted with potato starch acrylic acid.

[0039] In the obtained super absorbent resin containing...

Embodiment 3

[0044] (1) Dissolve 131.9 mg of zinc chloride in 95 g of water, add 5 g of lotus root starch paste, gelatinize at 90 ° C for 0.5 to 1 h, and wait until the temperature drops to room temperature to prepare 5% lotus root starch paste. In addition, any concentration of lotus root starch paste between 1% and 15% can be used.

[0045] (2) Weigh 20 g of acrylic acid, add 30 g of 30% sodium hydroxide under ice bath to neutralize the acrylic acid.

[0046] (3) Mix the lotus root starch paste obtained in step (1) with the neutralized acrylic acid obtained in step (2), and add 4 mL of horseradish peroxidase, 4 mL of hydrogen peroxide, and 0.010 g of N,N' – Methylenebisacrylamide, under the protection of nitrogen, react at a constant temperature of 35° C. for 3 hours.

[0047] (4) The product obtained in step (3) is taken out, dried and pulverized to obtain a superabsorbent resin grafted with lotus root starch and acrylic acid.

[0048] In the obtained super absorbent resin containing ...

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

PropertyMeasurementUnit
water absorptionaaaaaaaaaa
water absorptionaaaaaaaaaa
water absorptionaaaaaaaaaa
Login to View More

Abstract

The invention discloses a high water-absorbing resin containing a zinc element and a preparation method thereof. The method comprises the following steps that 1, a starch paste containing the zinc element is prepared; 2, acrylic acid is neutralized with strong base; 3, under catalytic initiation of a biological enzyme, starch and acrylic acid are subjected to grafted copolymerization; 4, the grafted copolymerization product obtained in the third step is dried and smashed, and the high water-absorbing resin is obtained. According to the high water-absorbing resin containing the zinc element and the preparation method thereof, the biological enzyme serves as a catalytic initiator to prepare starch grafted copolymerization acrylic acid high water-absorbing resin, and the preparation technology has the advantages of being mild in reaction condition, manageable in reaction process, green, environmentally friendly, free of pollution and the like. The prepared water-absorbing resin has the advantages of being high in starch grafting ratio, high in water absorption, good in biodegradability and the like; due to the fact that the high water-absorbing resin contains the trace element zinc, the problem of little leaves of plants planted in sand or a barren mountain area or soil washed heavily by rainwater can be well solved.

Description

technical field [0001] The invention relates to the field of biological enzyme catalysis and functional polymer materials, in particular to a zinc-containing superabsorbent resin and a preparation method thereof. More specifically, it relates to a zinc-containing superabsorbent resin prepared by using a biological enzyme as a catalytic initiator and a preparation method thereof. Background technique [0002] Superabsorbent resin is a kind of functional polymer with strong hydrophilic functional groups such as carboxyl group and hydroxyl group, and has a spatial network structure. Through hydration, it can quickly absorb water dozens or even thousands of times its own weight, and it can also absorb liquids such as saline, blood, and urine dozens to a hundred times. As a new type of functional polymer material, superabsorbent resin has the characteristics of large water absorption and strong water retention. It is completely different from traditional water-absorbing material...

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): C08F251/00C08F220/06C08F222/38C08F2/44C08F4/28C08F4/30C08F4/32C08K3/30C08K3/16C09K17/40C09K17/32C09K101/00
CPCC08F2/44C08F4/28C08F4/30C08F4/32C08F251/00C08K3/16C08K3/30C08K5/00C08K2003/168C08K2003/3045C09K17/32C09K17/40C09K2101/00C08F220/06C08F222/385
Inventor 孙培培方从兵曹海生章林忠孙俊杨军孙迎瓶
Owner ANHUI AGRICULTURAL UNIVERSITY
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