CN1266178C - Method for preparing super high water uptake resin of copolymerization of acrylic ester grafted from sodium alginate - Google Patents
Method for preparing super high water uptake resin of copolymerization of acrylic ester grafted from sodium alginate Download PDFInfo
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- CN1266178C CN1266178C CN 200410013085 CN200410013085A CN1266178C CN 1266178 C CN1266178 C CN 1266178C CN 200410013085 CN200410013085 CN 200410013085 CN 200410013085 A CN200410013085 A CN 200410013085A CN 1266178 C CN1266178 C CN 1266178C
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- sodium alginate
- aqueous solution
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- resin
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Abstract
The present invention relates to a method for preparing super strong water absorbing resin by the copolymerization of sodium alginate and hydroxyl acrylate. The method comprises the steps of mixing aqueous solution of sodium alginate and aqueous solution of acrylate according to a certain proportion, then quantitatively adding a dispersing agent, fully and uniformly mixing the materials, dripping a certain number of initiating agent and cross-linking agent under intense stirring, reacting for several hours at proper temperature and obtaining the granular resin through precipitation and washing. The method is easy to realize, and the obtained resin has the advantages of good biological compatibility, strong water absorbability, favorable water preserving capability and favorable salt tolerance.
Description
Technical field
The present invention relates to a kind of is raw material with sodium alginate and acrylic amine ester, and graft copolymerization prepares the method for water-absorbing resin.
Background technology
Super absorbent resin is a kind of new functional macromolecule material, because of it has the water-absorbent of superelevation and good water retention property, has purposes widely aspect industry, agricultural and the health care, has exploitation and is worth.It and other macromolecular material blend matrix material that also producibility can be good.
The method of synthesizing high-hydroscopicity resin has solution polymerization process, emulsion polymerization and inverse suspension polymerization method etc. at present.Exist shortcomings such as difficult lost, easy implode of reaction heat and discharging difficulty for solution polymerization process; Letex polymerization then needs through series of processes such as breakdown of emulsion, washings, and the aftertreatment trouble neither the ideal polymerization process.Anti-phase outstanding polymerization has remedied the defective of emulsion polymerization and solution polymerization process, compare with other synthetic method have that reaction heat is got rid of easily, polymerization process is stable, can directly obtain granulated product, need not disintegrating process, advantage such as product is easily dry, The comprehensive performance is good.
Lalgine and derivative thereof are wetting ability colloidal state saccharan, are the linear macromolecular compounds of being made up of β-(1,4) D-mannuronic acid and α-(1,4) L-guluronic acid, contain carboxyl and hydroxyl freely in its molecule.Because Lalgine is a kind of biomacromolecule compound, has good biocompatibility.
Summary of the invention
The purpose of this invention is to provide a kind of is raw material with sodium alginate and acrylate, and graft copolymerization prepares the method for water-absorbing resin.Lalgine and derivative thereof are wetting ability colloidal state saccharan, are the linear macromolecular compounds of being made up of β-(1,4) D-mannuronic acid and α-(1,4) L-guluronic acid, contain carboxyl and hydroxyl freely in its molecule.Because Lalgine is a kind of biomacromolecule compound, has good biocompatibility.
A kind of method for preparing absorbent resin is characterized in that: with the copolymerization of sodium alginate grafted propylene acid amide ester, the general formula of used acrylic amine ester cpds is: RCH=CHCOO (CH
2)
nNH
2, wherein R is alkyl or H, and n is 1 to 20 integer, and used linking agent general formula is: OHC (CH
2)
nCHO, wherein n is 2 to 15 integer.
The feature of the method for the super absorbent resin of the present invention's preparation is that used raw material is sodium alginate and acrylate.Wherein, the general formula of acrylic compound is:
RCH=CHCOO (CH
2)
nNH
2, wherein R is alkyl or H, n is 1 to 20 integer.
The mass ratio of sodium alginate and acrylic amine ester generally between 0.1～10, is preferably between 2～6.
Graft polymerization reaction of the present invention can carry out in the system that inert solvent and water are formed, and inert solvent can be an aliphatic hydrocarbon, as hexane, heptane, hexanaphthene, or gasoline, kerosene, the volume ratio of inert solvent and water is generally between 0.5～10.
Graft polymerization reaction temperature of the present invention can be between 0 ℃～80 ℃, and preferable polymerization temperature is between 20 ℃～60 ℃.
The general formula of employed linking agent is in the graft polymerization reaction of the present invention:
OHC (CH
2)
nCHO, wherein n is 2 to 15 integer.
Method of the present invention can be at the water-absorbing resin that is easy to preparation high-hydroscopicity under the temperature of Industry Control.The absorbent resin particle diameter of gained is between 10～100 μ m; Have very high water-absorbent, reach more than the 1000g/g, inhale 0.9% sodium chloride solution multiplying power 130g/g; Rate of water absorption is fast, and room temperature can reach 60% of maximum water absorbent rate in following 5 minutes.
Embodiment
The present invention is described in detail below in conjunction with embodiment.
Embodiment 1
In 2 liters reactor, add 2% sodium alginate aqueous solution 300mL successively, 5% Hydroxyethyl acrylate aqueous solution 60mL, hexanaphthene 300mL, brute force stirs, elevated temperature to 50 ℃ gradually, the ethylene glycol solution 10mL of Dropwise 5 % and 1% ammonium persulfate solution 10mL.After dropwising, continue reaction 2 hours, with polymer precipitation, wash the final vacuum drying with a large amount of methyl alcohol.The polymkeric substance that the obtains particulate state that is creamy white, median size 70 μ m, water absorbent rate 1100g/g inhales 0.9% sodium chloride aqueous solution multiplying power 100g/g.
Embodiment 2
According to the polymerization process of embodiment 1, except the consumption of hexanaphthene is 350mL, the water-absorbing resin water absorbent rate 1150g/g that obtains inhales 0.9% sodium chloride aqueous solution multiplying power 110g/g.
Embodiment 3
According to the polymerization process of embodiment 1, the ammonium persulfate solution dripping quantity except 1% is 15mL, and the water-absorbing resin water absorbent rate 950g/g that obtains inhales 0.9% sodium chloride aqueous solution multiplying power 80g/g.
Embodiment 4
According to the polymerization process of embodiment 1, the add-on of the Hydroxyethyl acrylate aqueous solution except 5% is 40mL, and the water-absorbing resin water absorbent rate 900g/g that obtains inhales 0.9% sodium chloride aqueous solution multiplying power 70g/g.
Embodiment 5
In 2 liters reactor, add 2% sodium alginate aqueous solution 300mL successively, 5% acrylic amine ethyl ester aqueous solution 60mL, hexanaphthene 300mL, add a small amount of span60, brute force stirs, elevated temperature to 50 ℃ gradually, the glutaraldehyde water solution 10mL of Dropwise 5 % and 1% potassium persulfate solution 10mL.After dropwising, continue reaction 2 hours, with polymer precipitation, wash the final vacuum drying with a large amount of methyl alcohol.The polymkeric substance that the obtains particulate state that is creamy white, median size 50 μ m, water absorbent rate 950g/g inhales 0.9% sodium chloride aqueous solution multiplying power 110g/g.
Embodiment 6
According to the polymerization process of embodiment 5, except the consumption of hexanaphthene is 250mL, the water-absorbing resin water absorbent rate 850g/g that obtains inhales 0.9% sodium chloride aqueous solution multiplying power 70g/g.
Embodiment 7
According to the polymerization process of embodiment 5, the potassium persulfate solution dripping quantity except 1% is 15mL, and the water-absorbing resin water absorbent rate 900g/g that obtains inhales 0.9% sodium chloride aqueous solution multiplying power 75g/g.
Embodiment 8
According to the polymerization process of embodiment 5, the add-on of the acrylic amine ethyl ester aqueous solution except 5% is 40mL, and the water-absorbing resin water absorbent rate 900g/g that obtains inhales 0.9% sodium chloride aqueous solution multiplying power 70g/g.
Embodiment 9
In 2 liters reactor, add 2% sodium alginate aqueous solution 300mL successively, 5% acrylic amine ethyl ester aqueous solution 60mL, hexanaphthene 300mL, add a small amount of polyvinyl alcohol, brute force stirs, gradually elevated temperature to 50 ℃, the glutaraldehyde water solution 5mL of Dropwise 5 %, 1% potassium persulfate solution 10mL and 2% calcium chloride solution 10mL after dropwising, continue reaction 2 hours, with polymer precipitation, wash the final vacuum drying with a large amount of methyl alcohol.The polymkeric substance that the obtains particulate state that is creamy white, water absorbent rate 900g/g inhales 0.9% sodium chloride aqueous solution multiplying power 100g/g.
Claims (1)
1, a kind of method for preparing absorbent resin is characterized in that: with the copolymerization of sodium alginate grafted propylene acid amide ester, the general formula of used acrylic amine ester cpds is: RCH=CHCOO (CH
2)
nNH
2, wherein R is alkyl or H, and n is 1 to 20 integer, and used linking agent general formula is: OHC (CH
2)
nCHO, wherein n is 2 to 15 integer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410013085 CN1266178C (en) | 2004-04-21 | 2004-04-21 | Method for preparing super high water uptake resin of copolymerization of acrylic ester grafted from sodium alginate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410013085 CN1266178C (en) | 2004-04-21 | 2004-04-21 | Method for preparing super high water uptake resin of copolymerization of acrylic ester grafted from sodium alginate |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1563128A CN1563128A (en) | 2005-01-12 |
| CN1266178C true CN1266178C (en) | 2006-07-26 |
Family
ID=34478182
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|---|---|---|---|
| CN 200410013085 Expired - Fee Related CN1266178C (en) | 2004-04-21 | 2004-04-21 | Method for preparing super high water uptake resin of copolymerization of acrylic ester grafted from sodium alginate |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103059224A (en) * | 2012-11-23 | 2013-04-24 | 高凡 | Starch/acrylic acid composite super-absorbent resin |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106832088B (en) * | 2017-02-15 | 2018-02-16 | 广东海赛新材料有限公司 | A kind of nucleocapsid water lock material and its preparation method and application |
| CN106986968B (en) * | 2017-05-04 | 2019-09-06 | 山东科技大学 | A kind of spray dust-arrest agent and method preparing macromolecule product based on graft copolymerization |
| CN108031458A (en) * | 2017-12-26 | 2018-05-15 | 安徽省东乾食品有限公司 | A kind of fruits and vegetables sorbent preparation method based on water-absorbing resin |
| CN110746230A (en) * | 2019-04-26 | 2020-02-04 | 青岛艾尔乐新材料有限公司 | Environment-friendly soil conditioner |
| CN110497635A (en) * | 2019-08-21 | 2019-11-26 | 无锡腾华电缆材料科技有限公司 | Sea water resistance waterstop production technology |
| CN112274571A (en) * | 2020-12-02 | 2021-01-29 | 西安医学院 | Antibacterial hydrogel suitable for diabetic foot ulcer and preparation method thereof |
-
2004
- 2004-04-21 CN CN 200410013085 patent/CN1266178C/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103059224A (en) * | 2012-11-23 | 2013-04-24 | 高凡 | Starch/acrylic acid composite super-absorbent resin |
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| CN1563128A (en) | 2005-01-12 |
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