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Super absorbent resin containing boron and preparing method thereof

A technology of superabsorbent resin and elements, applied in chemical instruments and methods, organic fertilizers, applications, etc., can solve problems such as boron deficiency, and achieve the effects of strong biodegradability, high water absorption, and mild reaction conditions

Active Publication Date: 2016-07-06
ANHUI AGRICULTURAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, the soil is too dry, saline-alkali or too acidic, and too much chemical nitrogen fertilizer can also cause boron deficiency.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] (1) Dissolve 410 mg of borax in 95 g of water, add 5 g of waxy corn starch, gelatinize at 80°C for 0.5 to 1 hour, and wait until the temperature drops to room temperature to prepare 5% waxy corn starch paste. (2) Weigh 20 g of acrylic acid, add 35 g of 30% sodium hydroxide under ice bath to neutralize the acrylic acid. In addition, any concentration of waxy cornstarch paste between 1% and 15% can be used.

[0030] (3) Mix the waxy cornstarch paste obtained in step (1) with the neutralized acrylic acid obtained in step (2), and add 2.5mL horseradish peroxidase, 2.5mL hydrogen peroxide, 0.010gN, N'-methylenebisacrylamide was reacted at 30°C for 5 hours at a constant temperature under the protection of nitrogen.

[0031] (4) The product obtained in step (3) is taken out, dried and pulverized to obtain a superabsorbent resin grafted with waxy cornstarch acrylic acid.

[0032] In the prepared superabsorbent resin containing boron, the content of boron element is 0.15%.

...

Embodiment 2

[0037](1) Dissolve 293mg of sodium octaborate tetrahydrate 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 prepare 5% potato starch paste. In addition, any concentration of potato starch paste between 1% and 15% can be used.

[0038] (2) Weigh 20 g of acrylic acid, add 35 g of 30% sodium hydroxide under ice bath to neutralize the acrylic acid.

[0039] (3) Mix the potato starch paste obtained in step (1) with the neutralized acrylic acid obtained in step (2), and add 3.5mL horseradish peroxidase, 3.5mL hydrogen peroxide, 0.010gN,N '-Methylenebisacrylamide, under the protection of nitrogen, react at a constant temperature of 25°C for 9h.

[0040] (4) The product obtained in step (3) is taken out, dried and pulverized to obtain a superabsorbent resin grafted with potato starch acrylic acid.

[0041] In the prepared super absorbent resin containing boron, the content of boron element is 0.20...

Embodiment 3

[0046] (1) Dissolve 177mg of boric acid in 95g of water, add 5g of lotus root starch, gelatinize at 90°C for 0.5 to 1h, 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.

[0047] (2) Weigh 20 g of acrylic acid, add 30 g of 30% sodium hydroxide under ice bath to neutralize the acrylic acid.

[0048] (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 was reacted at a constant temperature of 35°C for 3h under the protection of nitrogen.

[0049] (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.

[0050] In the obtained super absorbent resin containing boron, the content of...

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Abstract

The invention discloses super absorbent resin containing boron and a preparing method thereof.The method comprises the steps that 1, starch paste containing boron is prepared; 2, acrylic acid is neutralized with strong base; 3, graft copolymerization between starch and acrylic acid is conducted under the catalysis and induction of bio-enzyme; 4, graft copolymerization products obtained in the step 3 are dried and smashed, so that the super absorbent resin containing boron is obtained.The starch graft copolymerization acrylic acid super absorbent resin is prepared with bio-enzyme as a catalyst and initiator, and the preparing process has the advantages that reaction conditions are mild, and the reaction process is easy to control and environment-friendly.The prepared super absorbent resin has the advantages of being high in starch grafting rate, water absorption rate, biodegradability and the like.Furthermore, due to the fact that the super absorbent resin contains boron, the problem that plants grown in mountain land, river shoal sandy land or gravel land soil where boron and salt is lost easily can not fruit 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 superabsorbent resin containing boron and a preparation method thereof. More specifically, it relates to a boron-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 materi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F251/00C08F220/06C09K17/18C08B30/12
CPCC08B30/12C08F251/00C09K17/18C08F220/06
Inventor 郝福玲方从兵曹海生章林忠孙俊杨军孙迎瓶
Owner ANHUI AGRICULTURAL UNIVERSITY
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