CN101186676A - Method for preparing water-loss reducer from xanthan gum radiation grafting PAA - Google Patents
Method for preparing water-loss reducer from xanthan gum radiation grafting PAA Download PDFInfo
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- CN101186676A CN101186676A CNA2007100190631A CN200710019063A CN101186676A CN 101186676 A CN101186676 A CN 101186676A CN A2007100190631 A CNA2007100190631 A CN A2007100190631A CN 200710019063 A CN200710019063 A CN 200710019063A CN 101186676 A CN101186676 A CN 101186676A
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- xanthan gum
- water
- loss reducer
- methanol solution
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Abstract
The invention relates to a method for radiating and grafting xanthan gum with PAA to prepare water-loss reducer, which comprises first, activating xanthan gum in deionized water, adding NaOH solid, uniformly mixing to obtain mixture, controlling the density of xanthan gum in the mixture at 10g/L and the density of NaOH at 1g/L, adding acroleic acid into the mixture, adding methanol solution, reacting at constant temperature of 35-45DEG C, to obtain the water-loss reducer of 6.0kGy total radiation dose. The invention uses xanthan gum to prepare water-loss reducer, and uses the synthesis method of 60Coy radiation polymerization with high effect, energy-saving, clean, safe and cheap properties to graft xanthan gum with acroleic acid to prepare water-loss reducer. The synthesized water-loss reducer has better property and better water-absorbing quality in various medium solutions, while the product grafting radio is 130.8% and grafting efficiency is 82.4%.
Description
Technical field
The present invention relates to a kind of preparation method of water-holding agent, be specifically related to a kind of method of preparing water-loss reducer from xanthan gum radiation grafting PAA.
Background technology
Xanthan gum is a kind ofly to be made up of D-glucose, D-seminose, D-glucuronic acid, pyruvic acid, has the biological polyoses that essential industry is worth, it has high viscosity, excellent properties such as high acid-and base-resisting, salt characteristic, high heat-resistant stability, suspension and thixotropy.The secondary development of xanthan gum has higher economic benefit, but its performance is proposed requirements at the higher level, and chemical modification is the effective ways that are used for obtaining more new features, and wherein graft copolymerization occupies critical role in this regard.
Summary of the invention
The object of the present invention is to provide a kind of method that can improve soil physico-chemical property, promote the preparing water-loss reducer from xanthan gum radiation grafting PAA that farm crop grow up, prevent erosion.
For achieving the above object, the technical solution used in the present invention is: at first, at 80-85 ℃ with xanthan gum activation treatment in deionized water, and be that 1: 10 mass ratio adds the NaOH solid by xanthan gum: NaOH, evenly stir and obtain mixing solutions, concentration of xanthan gum is 10g/L in the control mixing solutions, concentration sodium hydroxide 1g/L; Graft copolymerization elementary reaction: methyl alcohol and water are mixed and made into methanol solution by 7: 3 volume ratio, in mixing solutions, be that 8: 1 mass ratio adds vinylformic acid by vinylformic acid and xanthan gum, be 1: 10 volume ratio adding methanol solution then by methanol solution and xanthan gum solution, make the water-holding agent that total radiation dose is 6.0kGy 35-45 ℃ of isothermal reaction.
The present invention adopts xanthan gum to prepare water-holding agent, and considers
60The polymerization of Co gamma-radiation is a kind of efficient, energy-conservation, cleaning, safety, synthetic method cheaply, this synthetic method is applied in the xanthan gum graft acrylic acid prepares water-holding agent, and the water-holding agent excellent property of synthetic water-holding agent, water-absorbent has performance preferably in the solution of various media, the percentage of grafting of product is 130.8%, and grafting efficiency is 82.4%, at deionized water, 0.9%NaCl, 0.9%BaCl
2, 0.9%FeCl
3, 0.9%Na
2SO
4, swelling ratio is respectively 815g/g, 354g/g, 26g/g, 21g/g, 11g/g, 330g/g, 33g/g in 0.9% urea, artificial urine.
Embodiment
Embodiment 1: at first, 82 ℃ with xanthan gum activation treatment in deionized water, and be that 1: 10 mass ratio adds the NaOH solid by xanthan gum: NaOH, evenly stir and obtain mixing solutions, concentration of xanthan gum is 10g/L in the control mixing solutions, concentration sodium hydroxide 1g/L; Graft copolymerization elementary reaction: methyl alcohol and water are mixed and made into methanol solution by 7: 3 volume ratio, in mixing solutions, be that 8: 1 mass ratio adds vinylformic acid by vinylformic acid and xanthan gum, be 1: 10 volume ratio adding methanol solution then by methanol solution and xanthan gum solution, make the water-holding agent that total radiation dose is 6.0kGy 45 ℃ of isothermal reactions.
Embodiment 2: at first, 80 ℃ with xanthan gum activation treatment in deionized water, and be that 1: 10 mass ratio adds the NaOH solid by xanthan gum: NaOH, evenly stir and obtain mixing solutions, concentration of xanthan gum is 10g/L in the control mixing solutions, concentration sodium hydroxide 1g/L; Graft copolymerization elementary reaction: methyl alcohol and water are mixed and made into methanol solution by 7: 3 volume ratio, in mixing solutions, be that 8: 1 mass ratio adds vinylformic acid by vinylformic acid and xanthan gum, be 1: 10 volume ratio adding methanol solution then by methanol solution and xanthan gum solution, make the water-holding agent that total radiation dose is 6.0kGy 38 ℃ of isothermal reactions.
Embodiment 3: at first, 85 ℃ with xanthan gum activation treatment in deionized water, and be that 1: 10 mass ratio adds the NaOH solid by xanthan gum: NaOH, evenly stir and obtain mixing solutions, concentration of xanthan gum is 10g/L in the control mixing solutions, concentration sodium hydroxide 1g/L; Graft copolymerization elementary reaction: methyl alcohol and water are mixed and made into methanol solution by 7: 3 volume ratio, in mixing solutions, be that 8: 1 mass ratio adds vinylformic acid by vinylformic acid and xanthan gum, be 1: 10 volume ratio adding methanol solution then by methanol solution and xanthan gum solution, make the water-holding agent that total radiation dose is 6.0kGy 35 ℃ of isothermal reactions.
Embodiment 4: at first, 83 ℃ with xanthan gum activation treatment in deionized water, and be that 1: 10 mass ratio adds the NaOH solid by xanthan gum: NaOH, evenly stir and obtain mixing solutions, concentration of xanthan gum is 10g/L in the control mixing solutions, concentration sodium hydroxide 1g/L; Graft copolymerization elementary reaction: methyl alcohol and water are mixed and made into methanol solution by 7: 3 volume ratio, in mixing solutions, be that 8: 1 mass ratio adds vinylformic acid by vinylformic acid and xanthan gum, be 1: 10 volume ratio adding methanol solution then by methanol solution and xanthan gum solution, make the water-holding agent that total radiation dose is 6.0kGy 42 ℃ of isothermal reactions.
Claims (1)
1. the method for preparing water-loss reducer from xanthan gum radiation grafting PAA is characterized in that:
1) at first, 80-85 ℃ with xanthan gum activation treatment in deionized water, and be that 1: 10 mass ratio adds the NaOH solid by xanthan gum: NaOH, evenly stir and obtain mixing solutions, concentration of xanthan gum is 10g/L in the control mixing solutions, concentration sodium hydroxide 1g/L;
2) graft copolymerization elementary reaction: methyl alcohol and water are mixed and made into methanol solution by 7: 3 volume ratio, in mixing solutions, be that 8: 1 mass ratio adds vinylformic acid by vinylformic acid and xanthan gum, be 1: 10 volume ratio adding methanol solution then by methanol solution and xanthan gum solution, make the water-holding agent that total radiation dose is 6.0kGy 35-45 ℃ of isothermal reaction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007100190631A CN101186676A (en) | 2007-11-13 | 2007-11-13 | Method for preparing water-loss reducer from xanthan gum radiation grafting PAA |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007100190631A CN101186676A (en) | 2007-11-13 | 2007-11-13 | Method for preparing water-loss reducer from xanthan gum radiation grafting PAA |
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| Publication Number | Publication Date |
|---|---|
| CN101186676A true CN101186676A (en) | 2008-05-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2007100190631A Pending CN101186676A (en) | 2007-11-13 | 2007-11-13 | Method for preparing water-loss reducer from xanthan gum radiation grafting PAA |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101704927B (en) * | 2009-10-16 | 2011-05-18 | 陕西科技大学 | Preparation method of sepiolite/xanthan gum compound flocculant |
| CN103289017A (en) * | 2013-06-26 | 2013-09-11 | 西北师范大学 | Preparation method of multifunctional clay-based sand solidification agent |
| CN117487096A (en) * | 2023-12-29 | 2024-02-02 | 四川省农业科学院生物技术核技术研究所 | Method for preparing water-retaining agent |
-
2007
- 2007-11-13 CN CNA2007100190631A patent/CN101186676A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101704927B (en) * | 2009-10-16 | 2011-05-18 | 陕西科技大学 | Preparation method of sepiolite/xanthan gum compound flocculant |
| CN103289017A (en) * | 2013-06-26 | 2013-09-11 | 西北师范大学 | Preparation method of multifunctional clay-based sand solidification agent |
| CN103289017B (en) * | 2013-06-26 | 2016-04-13 | 西北师范大学 | A kind of preparation method of multi-functional clay-based sand-fixation agent |
| CN117487096A (en) * | 2023-12-29 | 2024-02-02 | 四川省农业科学院生物技术核技术研究所 | Method for preparing water-retaining agent |
| CN117487096B (en) * | 2023-12-29 | 2024-03-29 | 四川省农业科学院生物技术核技术研究所 | Method for preparing water-retaining agent |
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Open date: 20080528 |