CN102643498A - Preparation method of water-absorbing gel containing animal and plant fibers and inorganic nanoparticles - Google Patents
Preparation method of water-absorbing gel containing animal and plant fibers and inorganic nanoparticles Download PDFInfo
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Abstract
The invention relates to a preparation method of a water-absorbing gel containing animal and plant fibers and inorganic nanoparticles. The water-absorbing gel in the prior art has the disadvantages of poor biological degradability, low gel strength and low salt tolerance. The preparation method disclosed by the invention comprises the following process steps: placing 5-7 parts by weight of gelatin into deionized water at the temperature of 40 DEG C, heating in a water bath at the temperature of 50 DEG C after full swelling of the gelatin, lightly shaking till complete dissolution, further dispersing 2-3 parts by weight of inorganic nano-powder into the deionized water, performing ultrasonic treatment for 10 minutes under ultrasonic waves, then uniformly dispersing 10-14 parts by weight of cellulose, then adding the prepared gelatin solution and inorganic nano-powder dispersion liquid, stirring for 30 minutes, adding 100 parts by weight of acrylic monomers, 2 parts by weight of initiator ammonium persulfate and 0.5 part by weight of cross-linking agent N, N-methylene-bis-acrylamide, increasing the temperature to 70-75 DEG C, and performing heat insulation reaction for 2-2.5 hours for preparation. A product obtained by the preparation method disclosed by the invention has the advantages of excellent biological degradability, gel strength and water absorption.
Description
Technical field
The invention belongs to the preparing technical field of water absorbent gel, be specifically related to a kind of preparation method who contains the water absorbent gel of animal and plant fiber and inorganic nano-particle.
Technical background
Water absorbent gel is a kind of three-dimensional polymer network that can absorb himself quality 10-1000 times moisture or salts solution.Compare owing to have excellent water-absorbing water retention property more with traditional water-absorbing material (like sponge, cotton etc.), therefore be widely used in industry-by-industry, like sanitary product, gardening, agricultural, medicament slow release etc.[Shuibo?Hua,?Aiqin?Wang.?Synthesis,?characterization?and?swelling?behaviors?of?sodium?alginate-g-poly(acrylic?acid)/sodium?humate?superabsorbent.?Carbohydrate?Polymers?75?(2009)?79-84]。
Existing water absorbent gel is mainly the synthetic macromolecule class and contains the vegetable fibre class.The synthetic macromolecule class is because raw material is non-renewable, and biological degradability is poor, therefore uses to be restricted.Contain vegetable fibre class such as Mierocrystalline cellulose and starch,, contain a large amount of hydroxyls in the molecule, therefore have good water absorbing properties because the basic structural unit of its molecule is a glucose.Simultaneously, have excellent biocompatibility, biological degradability and recyclability owing to gather polysaccharide, and nontoxic, therefore in the preparation of water absorbent gel, enjoy favor in recent years.[Chunyu Chang; Bo Duan; Jie Cai. Superabsorbent hydrogels based on cellulose for smart swelling and controllable delivery. European Polymer Journal 46 (2010) 92-100], but limited widespread use because lower, the salt tolerance of its gel-strength is relatively poor.
Summary of the invention
The object of the present invention is to provide a kind of preparation method who contains the water absorbent gel of animal and plant fiber and inorganic nano-particle, the biological degradability that prior art exists is poor to overcome, gel-strength and the low problem of salt tolerance.
For achieving the above object, the technical scheme that the present invention adopts is:
A kind of preparation method who contains the water absorbent gel of animal and plant fiber and inorganic nano-particle is characterized in that: may further comprise the steps:
1) preparation of gelatin solution
The gelatin of 5-7 weight part is placed 40 ℃ deionized water, treat the abundant swelling of gelatin after, heating and swaying gently in 50 ℃ water-bath is dissolved until complete, gelatin solution, subsequent use;
2) preparation of inorganic nanometer-powder dispersion liquid
The inorganic nanometer powder of 2-3 weight part is scattered in supersound process 10min under the deionized water for ultrasonic ripple, gets the inorganic nanometer-powder dispersion liquid, subsequent use;
3) contain the preparation of the water absorbent gel of animal and plant fiber and inorganic nano-particle
The Mierocrystalline cellulose of 10-14 weight part is scattered in the there-necked flask that contains deionized water; Add the gelatin solution and the inorganic nanometer-powder dispersion liquid of above-mentioned preparation after being uniformly dispersed, stir 30min, add the initiator ammonium persulfate and the 0.5 parts by weight of cross-linking agent N of 100 parts by weight of acrylic acid class monomers, 2 weight parts; The N-methylene-bisacrylamide; Be warming up to 70 ~ 75 ℃, insulation reaction 2 ~ 2.5h promptly gets the water absorbent gel that contains animal and plant fiber and inorganic nano-particle.
Above-mentioned animal fibre is that gelatin is any in skin gelatin and the bone gelatin(e).
Above-mentioned inorganic nanometer powder is any in polynite, silicon-dioxide, titanium oxide, aluminum oxide, Natural manganese dioxide and the zinc oxide.
Above-mentioned vegetable fibre is that Mierocrystalline cellulose is any in Walocel MT 20.000PV, Natvosol, Vltra tears and the CMC 99.5.
The basic structural unit of animal fibre is an amino acid; Except containing hydroxyl, also contain other a large amount of ultra hydrophilic radicals, in its molecule like carboxyl, amino etc.; And these groups have different electrically; Therefore, animal fibre has excellent water-absorbing performance more than vegetable fibre theoretically, and can stand the electrolytical influence of various differences.Simultaneously, animal fibre also has and same good biocompatibility, biological degradability and the recyclability of vegetable fibre, and nontoxic.Mineral filler is incorporated into the crosslinking reaction that can participate in the polymer molecule interchain in the polymeric matrix because a large amount of hydroxyls is contained on its surface, therefore not only can improve the intensity of polymkeric substance, can also increase the water absorbing properties of polymkeric substance.
Embodiment
Below in conjunction with embodiment the present invention is further specified.
Embodiment 1:
1) preparation of gelatin solution
The gelatin of 6 weight parts is placed 40 ℃ deionized water, treat the abundant swelling of gelatin after, heating and swaying gently in 50 ℃ water-bath is dissolved until complete, gelatin solution, subsequent use;
2) preparation of inorganic nanometer-powder dispersion liquid
The polynite of 2.5 weight parts is scattered in supersound process 10min under the deionized water for ultrasonic ripple, gets the inorganic nanometer-powder dispersion liquid, subsequent use;
3) contain the preparation of the water absorbent gel of animal and plant fiber and inorganic nano-particle
The Walocel MT 20.000PV of 12.5 weight parts is scattered in the there-necked flask that contains deionized water; Add the gelatin solution and the inorganic nanometer-powder dispersion liquid of above-mentioned preparation after being uniformly dispersed, stir 30min, add the initiator ammonium persulfate and the 0.5 parts by weight of cross-linking agent N of 100 parts by weight of acrylic acid class monomers, 2 weight parts; The N-methylene-bisacrylamide; Be warming up to 70 ℃, insulation reaction 2h promptly gets the water absorbent gel that contains animal and plant fiber and inorganic nano-particle.
Embodiment 2:
1) preparation of gelatin solution
The gelatin of 7 weight parts is placed 40 ℃ deionized water, treat the abundant swelling of gelatin after, heating and swaying gently in 50 ℃ water-bath is dissolved until complete, gelatin solution, subsequent use;
2) preparation of inorganic nanometer-powder dispersion liquid
The nano silicon of 3 weight parts is scattered in supersound process 10min under the deionized water for ultrasonic ripple, gets the inorganic nanometer-powder dispersion liquid, subsequent use;
3) contain the preparation of the water absorbent gel of animal and plant fiber and inorganic nano-particle
The Vltra tears of 10 weight parts is scattered in the there-necked flask that contains deionized water; Add the gelatin solution and the inorganic nanometer-powder dispersion liquid of above-mentioned preparation after being uniformly dispersed, stir 30min, add the initiator ammonium persulfate and the 0.5 parts by weight of cross-linking agent N of 100 parts by weight of acrylic acid class monomers, 2 weight parts; The N-methylene-bisacrylamide; Be warming up to 72 ℃, insulation reaction 2.2h promptly gets the water absorbent gel that contains animal and plant fiber and inorganic nano-particle.
Embodiment 3:
1) preparation of gelatin solution
The gelatin of 5 weight parts is placed 40 ℃ deionized water, treat the abundant swelling of gelatin after, heating and swaying gently in 50 ℃ water-bath is dissolved until complete, gelatin solution, subsequent use;
2) preparation of inorganic nanometer-powder dispersion liquid
The nano magnesia of 3 weight parts is scattered in supersound process 10min under the deionized water for ultrasonic ripple, gets the inorganic nanometer-powder dispersion liquid, subsequent use;
3) contain the preparation of the water absorbent gel of animal and plant fiber and inorganic nano-particle
The CMC 99.5 of 14 weight parts is scattered in the there-necked flask that contains deionized water; Add the gelatin solution and the inorganic nanometer-powder dispersion liquid of above-mentioned preparation after being uniformly dispersed, stir 30min, add the initiator ammonium persulfate and the 0.5 parts by weight of cross-linking agent N of 100 parts by weight of acrylic acid class monomers, 2 weight parts; The N-methylene-bisacrylamide; Be warming up to 73 ℃, insulation reaction 2.1h promptly gets the water absorbent gel that contains animal and plant fiber and inorganic nano-particle.
Embodiment 4:
1) preparation of gelatin solution
The gelatin of 6.5 weight parts is placed 40 ℃ deionized water, treat the abundant swelling of gelatin after, heating and swaying gently in 50 ℃ water-bath is dissolved until complete, gelatin solution, subsequent use;
2) preparation of inorganic nanometer-powder dispersion liquid
The polynite of 3 weight parts is scattered in supersound process 10min under the deionized water for ultrasonic ripple, gets the inorganic nanometer-powder dispersion liquid, subsequent use;
3) contain the preparation of the water absorbent gel of animal and plant fiber and inorganic nano-particle
The Natvosol of 13 weight parts is scattered in the there-necked flask that contains deionized water; Add the gelatin solution and the inorganic nanometer-powder dispersion liquid of above-mentioned preparation after being uniformly dispersed, stir 30min, add the initiator ammonium persulfate and the 0.5 parts by weight of cross-linking agent N of 100 parts by weight of acrylic acid class monomers, 2 weight parts; The N-methylene-bisacrylamide; Be warming up to 74 ℃, insulation reaction 2.3h promptly gets the water absorbent gel that contains animal and plant fiber and inorganic nano-particle.
Embodiment 5:
1) preparation of gelatin solution
The gelatin of 5.3 weight parts is placed 40 ℃ deionized water, treat the abundant swelling of gelatin after, heating and swaying gently in 50 ℃ water-bath is dissolved until complete, gelatin solution, subsequent use;
2) preparation of inorganic nanometer-powder dispersion liquid
The nano titanium oxide of 2.8 weight parts is scattered in supersound process 10min under the deionized water for ultrasonic ripple, gets the inorganic nanometer-powder dispersion liquid, subsequent use;
3) contain the preparation of the water absorbent gel of animal and plant fiber and inorganic nano-particle
The hydroxypropylcellulose of 12.8 weight parts is scattered in the there-necked flask that contains deionized water; Add the gelatin solution and the inorganic nanometer-powder dispersion liquid of above-mentioned preparation after being uniformly dispersed, stir 30min, add the initiator ammonium persulfate and the 0.5 parts by weight of cross-linking agent N of 100 parts by weight of acrylic acid class monomers, 2 weight parts; The N-methylene-bisacrylamide; Be warming up to 75 ℃, insulation reaction 2.5h promptly gets the water absorbent gel that contains animal and plant fiber and inorganic nano-particle.
The present invention utilizes two kinds of fiber production water absorbent gels of plant-animal simultaneously, makes it have excellent biological compatibility, and gelatin and ether of cellulose be cheap commercially available prod, and cost is lower.The existence of inorganic nano-particle can improve the intensity of water absorbent gel, and gel has the excellent water-absorbing performance, and product can be widely used in industry-by-industry.Biocompatibility is good to prepare the excellent gel of biological degradability, gel-strength and water absorbing properties with the animal fibre that contains more suction groups and the inorganic nano-particle that can improve polymer gel intensity through introducing in the present invention.The water absorbent gel of the present invention's preparation is inhaled zero(ppm) water can reach 479g/g, and gel-strength reaches 216g/cm2.The results of property of dissimilar water absorbent gels is seen table 1.
Claims (4)
1. preparation method who contains the water absorbent gel of animal and plant fiber and inorganic nano-particle is characterized in that: may further comprise the steps:
1) preparation of gelatin solution
The gelatin of 5-7 weight part is placed 40 ℃ deionized water, treat the abundant swelling of gelatin after, heating and swaying gently in 50 ℃ water-bath is dissolved until complete, gelatin solution, subsequent use;
2) preparation of inorganic nanometer-powder dispersion liquid
The inorganic nanometer powder of 2-3 weight part is scattered in supersound process 10min under the deionized water for ultrasonic ripple, gets the inorganic nanometer-powder dispersion liquid, subsequent use;
3) contain the preparation of the water absorbent gel of animal and plant fiber and inorganic nano-particle
The Mierocrystalline cellulose of 10-14 weight part is scattered in the there-necked flask that contains deionized water; Add the gelatin solution and the inorganic nanometer-powder dispersion liquid of above-mentioned preparation after being uniformly dispersed, stir 30min, add the initiator ammonium persulfate and the 0.5 parts by weight of cross-linking agent N of 100 parts by weight of acrylic acid class monomers, 2 weight parts; The N-methylene-bisacrylamide; Be warming up to 70 ~ 75 ℃, insulation reaction 2-2.5h promptly gets the water absorbent gel that contains animal and plant fiber and inorganic nano-particle.
2. a kind of preparation method who contains the water absorbent gel of animal and plant fiber and inorganic nano-particle according to claim 1 is characterized in that: described animal fibre is that gelatin is any in skin gelatin and the bone gelatin(e).
3. a kind of preparation method who contains the water absorbent gel of animal and plant fiber and inorganic nano-particle according to claim 1 and 2 is characterized in that: said inorganic nanometer powder is any in polynite, silicon-dioxide, titanium oxide, aluminum oxide, Natural manganese dioxide and the zinc oxide.
4. a kind of preparation method who contains the water absorbent gel of animal and plant fiber and inorganic nano-particle according to claim 3 is characterized in that: said vegetable fibre is that Mierocrystalline cellulose is any in Walocel MT 20.000PV, Natvosol, Vltra tears and the CMC 99.5.
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103013138A (en) * | 2012-12-11 | 2013-04-03 | 四川大学 | Gelatin-based nano-composite material and preparation method thereof |
| CN105153459A (en) * | 2015-10-19 | 2015-12-16 | 高大元 | Preparation method of micro conductive hydrogel |
| CN106179243A (en) * | 2016-07-28 | 2016-12-07 | 东北林业大学 | A kind of preparation method of new dye adsorbent |
| CN106267307A (en) * | 2016-08-31 | 2017-01-04 | 西藏宇妥文化发展有限公司 | A kind of compositions with water sorption and preparation method thereof and purposes |
| CN107915849A (en) * | 2017-11-08 | 2018-04-17 | 青岛农业大学 | A kind of Nanometer composite hydrogel and its preparation method and application |
| CN108675871A (en) * | 2018-07-11 | 2018-10-19 | 佛山皖阳生物科技有限公司 | A kind of preparation method of carboxymethyl cellulose slow-release fertilizer coating materials |
| CN110078945A (en) * | 2019-05-28 | 2019-08-02 | 陕西科技大学 | A kind of preparation method of gelatin-based high intensity hydrogel |
| CN111032208A (en) * | 2017-08-18 | 2020-04-17 | 新加坡国立大学 | Hygroscopic hydrogels |
| CN115028948A (en) * | 2022-06-29 | 2022-09-09 | 陕西科技大学 | Photochromic biomass-based nano composite hydrogel and preparation method thereof |
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| CN1613894A (en) * | 2004-09-10 | 2005-05-11 | 何寒 | Preparaing method and process for multifunctional high-absorption gel by manual industrial production |
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Patent Citations (2)
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| CN1613894A (en) * | 2004-09-10 | 2005-05-11 | 何寒 | Preparaing method and process for multifunctional high-absorption gel by manual industrial production |
| WO2010057823A1 (en) * | 2008-11-21 | 2010-05-27 | Basf Se | Mixture of surface postcrosslinked superabsorbers with different surface postcrosslinking |
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103013138B (en) * | 2012-12-11 | 2014-10-15 | 四川大学 | Gelatin-based nano-composite material and preparation method thereof |
| CN103013138A (en) * | 2012-12-11 | 2013-04-03 | 四川大学 | Gelatin-based nano-composite material and preparation method thereof |
| CN105153459A (en) * | 2015-10-19 | 2015-12-16 | 高大元 | Preparation method of micro conductive hydrogel |
| CN106179243B (en) * | 2016-07-28 | 2019-02-05 | 东北林业大学 | A kind of preparation method of dye sorbent |
| CN106179243A (en) * | 2016-07-28 | 2016-12-07 | 东北林业大学 | A kind of preparation method of new dye adsorbent |
| CN106267307A (en) * | 2016-08-31 | 2017-01-04 | 西藏宇妥文化发展有限公司 | A kind of compositions with water sorption and preparation method thereof and purposes |
| CN111032208A (en) * | 2017-08-18 | 2020-04-17 | 新加坡国立大学 | Hygroscopic hydrogels |
| CN107915849A (en) * | 2017-11-08 | 2018-04-17 | 青岛农业大学 | A kind of Nanometer composite hydrogel and its preparation method and application |
| CN107915849B (en) * | 2017-11-08 | 2020-06-19 | 青岛农业大学 | Nano composite hydrogel and preparation method and application thereof |
| CN108675871A (en) * | 2018-07-11 | 2018-10-19 | 佛山皖阳生物科技有限公司 | A kind of preparation method of carboxymethyl cellulose slow-release fertilizer coating materials |
| CN110078945A (en) * | 2019-05-28 | 2019-08-02 | 陕西科技大学 | A kind of preparation method of gelatin-based high intensity hydrogel |
| CN110078945B (en) * | 2019-05-28 | 2021-07-30 | 陕西科技大学 | Preparation method of gelatin-based high-strength hydrogel |
| CN115028948A (en) * | 2022-06-29 | 2022-09-09 | 陕西科技大学 | Photochromic biomass-based nano composite hydrogel and preparation method thereof |
| CN115028948B (en) * | 2022-06-29 | 2023-06-09 | 陕西科技大学 | Photochromic biomass-based nano composite hydrogel and preparation method thereof |
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Effective date of registration: 20191209 Address after: 102200 torch Street 30, Changping District science and Technology Park, Beijing Patentee after: Tianxinfu (Beijing) Medical Equipment Co., Ltd. Address before: 710021 Shaanxi city of Xi'an province Weiyang University City Patentee before: Shaanxi University of Science and Technology |