CN102643498B - 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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- CN102643498B CN102643498B CN201110172804.6A CN201110172804A CN102643498B CN 102643498 B CN102643498 B CN 102643498B CN 201110172804 A CN201110172804 A CN 201110172804A CN 102643498 B CN102643498 B CN 102643498B
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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 of the water absorbent gel containing animal and plant fiber and inorganic nano-particle.
Technical background
Water absorbent gel is a kind of Space network of polymer that can absorb himself quality 10-1000 times moisture or salts solution.Compare with traditional water-absorbing material (as sponge, cotton etc.) owing to thering is more excellent water-absorbing-retaining performance, be therefore widely used in industry-by-industry, as 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 synthetic high score subclass and contains vegetable fibre class.Synthetic high score subclass is because raw material is non-renewable, and biological degradability is poor, and therefore application is restricted.Containing vegetable fibre class, as Mierocrystalline cellulose and starch, because the basic structural unit of its molecule is glucose, in molecule, contain a large amount of hydroxyls, therefore there is good water absorbing properties.Meanwhile, because poly-polysaccharide has excellent biocompatibility, biological degradability and recyclability, 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 because its gel-strength is lower, salt tolerance is poor has limited widespread use.
Summary of the invention
The object of the present invention is to provide a kind of preparation method of the water absorbent gel containing animal and plant fiber and inorganic nano-particle, to overcome, the biological degradability that prior art exists is poor, gel-strength and the low problem of salt tolerance.
For achieving the above object, the technical solution used in the present invention is:
A preparation method who contains the water absorbent gel of animal and plant fiber and inorganic nano-particle, is characterized in that: comprise the following steps:
1) preparation of gelatin solution
The gelatin of 5-7 weight part is placed in to the deionized water of 40 ℃, after the abundant swelling of gelatin, in the water-bath of 50 ℃, heating is also swayed gently, until entirely molten, obtain gelatin solution, standby;
2) preparation of inorganic nanometer-powder dispersion liquid
The inorganic nanometer powder of 2-3 weight part is scattered in to supersound process 10min under deionized water for ultrasonic ripple, obtains inorganic nanometer-powder dispersion liquid, standby;
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, the gelatin solution and the inorganic nanometer-powder dispersion liquid that after being uniformly dispersed, add above-mentioned preparation, stir 30min, add 100 parts by weight of acrylic acid class monomers, the initiator ammonium persulfate of 2 weight parts and the linking agent N of 0.5 weight part, N-methylene-bisacrylamide, be warming up to 70 ~ 75 ℃, insulation reaction 2 ~ 2.5h, obtains the water absorbent gel containing animal and plant fiber and inorganic nano-particle.
Above-mentioned animal fibre is that gelatin is any in skin gelatin and bone gelatin(e).
Above-mentioned inorganic nanometer powder is any in polynite, silicon-dioxide, titanium dioxide, aluminum oxide, magnesium oxide and zinc oxide.
Above-mentioned vegetable fibre is that Mierocrystalline cellulose is any in Walocel MT 20.000PV, Natvosol, Vltra tears and carboxymethyl cellulose.
The basic structural unit of animal fibre is amino acid, in its molecule except containing hydroxyl, also contain other a large amount of super hydrophilic radicals, as carboxyl, amino etc., and these groups with different electrically, therefore, animal fibre has more excellent water absorbing properties compared with vegetable fibre from theory, and can stand the electrolytical impact of various differences.Meanwhile, animal fibre also has biocompatibility, biological degradability and the recyclability same good with vegetable fibre, and nontoxic.Mineral filler, because a large amount of hydroxyls is contained on its surface, is incorporated into the crosslinking reaction that can participate in polymer molecule interchain in polymeric matrix, 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 will be further described.
Embodiment 1:
1) preparation of gelatin solution
The gelatin of 6 weight parts is placed in to the deionized water of 40 ℃, after the abundant swelling of gelatin, in the water-bath of 50 ℃, heating is also swayed gently, until entirely molten, obtain gelatin solution, standby;
2) preparation of inorganic nanometer-powder dispersion liquid
The polynite of 2.5 weight parts is scattered in to supersound process 10min under deionized water for ultrasonic ripple, obtains inorganic nanometer-powder dispersion liquid, standby;
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, the gelatin solution and the inorganic nanometer-powder dispersion liquid that after being uniformly dispersed, add above-mentioned preparation, stir 30min, add 100 parts by weight of acrylic acid class monomers, the initiator ammonium persulfate of 2 weight parts and the linking agent N of 0.5 weight part, N-methylene-bisacrylamide, be warming up to 70 ℃, insulation reaction 2h, obtains the water absorbent gel containing animal and plant fiber and inorganic nano-particle.
Embodiment 2:
1) preparation of gelatin solution
The gelatin of 7 weight parts is placed in to the deionized water of 40 ℃, after the abundant swelling of gelatin, in the water-bath of 50 ℃, heating is also swayed gently, until entirely molten, obtain gelatin solution, standby;
2) preparation of inorganic nanometer-powder dispersion liquid
The nano silicon of 3 weight parts is scattered in to supersound process 10min under deionized water for ultrasonic ripple, obtains inorganic nanometer-powder dispersion liquid, standby;
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, the gelatin solution and the inorganic nanometer-powder dispersion liquid that after being uniformly dispersed, add above-mentioned preparation, stir 30min, add 100 parts by weight of acrylic acid class monomers, the initiator ammonium persulfate of 2 weight parts and the linking agent N of 0.5 weight part, N-methylene-bisacrylamide, be warming up to 72 ℃, insulation reaction 2.2h, obtains the water absorbent gel containing animal and plant fiber and inorganic nano-particle.
Embodiment 3:
1) preparation of gelatin solution
The gelatin of 5 weight parts is placed in to the deionized water of 40 ℃, after the abundant swelling of gelatin, in the water-bath of 50 ℃, heating is also swayed gently, until entirely molten, obtain gelatin solution, standby;
2) preparation of inorganic nanometer-powder dispersion liquid
The nano magnesia of 3 weight parts is scattered in to supersound process 10min under deionized water for ultrasonic ripple, obtains inorganic nanometer-powder dispersion liquid, standby;
3) contain the preparation of the water absorbent gel of animal and plant fiber and inorganic nano-particle
The carboxymethyl cellulose of 14 weight parts is scattered in the there-necked flask that contains deionized water, the gelatin solution and the inorganic nanometer-powder dispersion liquid that after being uniformly dispersed, add above-mentioned preparation, stir 30min, add 100 parts by weight of acrylic acid class monomers, the initiator ammonium persulfate of 2 weight parts and the linking agent N of 0.5 weight part, N-methylene-bisacrylamide, be warming up to 73 ℃, insulation reaction 2.1h, obtains the water absorbent gel containing animal and plant fiber and inorganic nano-particle.
Embodiment 4:
1) preparation of gelatin solution
The gelatin of 6.5 weight parts is placed in to the deionized water of 40 ℃, after the abundant swelling of gelatin, in the water-bath of 50 ℃, heating is also swayed gently, until entirely molten, obtain gelatin solution, standby;
2) preparation of inorganic nanometer-powder dispersion liquid
The polynite of 3 weight parts is scattered in to supersound process 10min under deionized water for ultrasonic ripple, obtains inorganic nanometer-powder dispersion liquid, standby;
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, the gelatin solution and the inorganic nanometer-powder dispersion liquid that after being uniformly dispersed, add above-mentioned preparation, stir 30min, add 100 parts by weight of acrylic acid class monomers, the initiator ammonium persulfate of 2 weight parts and the linking agent N of 0.5 weight part, N-methylene-bisacrylamide, be warming up to 74 ℃, insulation reaction 2.3h, obtains the water absorbent gel containing animal and plant fiber and inorganic nano-particle.
Embodiment 5:
1) preparation of gelatin solution
The gelatin of 5.3 weight parts is placed in to the deionized water of 40 ℃, after the abundant swelling of gelatin, in the water-bath of 50 ℃, heating is also swayed gently, until entirely molten, obtain gelatin solution, standby;
2) preparation of inorganic nanometer-powder dispersion liquid
The nano titanium oxide of 2.8 weight parts is scattered in to supersound process 10min under deionized water for ultrasonic ripple, obtains inorganic nanometer-powder dispersion liquid, standby;
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, the gelatin solution and the inorganic nanometer-powder dispersion liquid that after being uniformly dispersed, add above-mentioned preparation, stir 30min, add 100 parts by weight of acrylic acid class monomers, the initiator ammonium persulfate of 2 weight parts and the linking agent N of 0.5 weight part, N-methylene-bisacrylamide, be warming up to 75 ℃, insulation reaction 2.5h, obtains the water absorbent gel containing animal and plant fiber and inorganic nano-particle.
The present invention utilizes two kinds of fibers of animals and plants to prepare water absorbent gel simultaneously, makes it have good biocompatibility, and gelatin and ether of cellulose be more 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 excellent water absorbing properties, and product can be widely used in industry-by-industry.The present invention prepares the gel of biological degradability, gel-strength and water absorbing properties excellence by the inorganic nano-particle of introducing the good and animal fibre that contains more water suction groups of biocompatibility and can improve polymer gel intensity.Water absorbent gel prepared by the present invention is inhaled distilled water can reach 479g/g, and gel-strength reaches 216g/cm2.The results of property of dissimilar water absorbent gel is in Table 1.
Claims (4)
1. contain a preparation method for the water absorbent gel of animal and plant fiber and inorganic nano-particle, it is characterized in that: comprise the following steps:
1) preparation of gelatin solution
The gelatin of 5-7 weight part is placed in to the deionized water of 40 ℃, after the abundant swelling of gelatin, in the water-bath of 50 ℃, heating is also swayed gently, until entirely molten, obtain gelatin solution, standby;
2) preparation of inorganic nanometer-powder dispersion liquid
The inorganic nanometer powder of 2-3 weight part is scattered in to supersound process 10min under deionized water for ultrasonic ripple, obtains inorganic nanometer-powder dispersion liquid, standby;
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, the gelatin solution and the inorganic nanometer-powder dispersion liquid that after being uniformly dispersed, add above-mentioned preparation, stir 30min, add 100 parts by weight of acrylic acid class monomers, the initiator ammonium persulfate of 2 weight parts and the linking agent N of 0.5 weight part, N '-methylene-bisacrylamide, be warming up to 70 ~ 75 ℃, insulation reaction 2-2.5h, obtains the water absorbent gel containing animal and plant fiber and inorganic nano-particle.
2. the preparation method of a kind of water absorbent gel containing 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 bone gelatin(e).
3. the preparation method of a kind of water absorbent gel containing animal and plant fiber and inorganic nano-particle according to claim 1 and 2, is characterized in that: described inorganic nanometer powder is any in polynite, silicon-dioxide, titanium dioxide, aluminum oxide, magnesium oxide and zinc oxide.
4. the preparation method of a kind of water absorbent gel containing animal and plant fiber and inorganic nano-particle according to claim 3, is characterized in that: described vegetable fibre is that Mierocrystalline cellulose is any in Walocel MT 20.000PV, Natvosol, Vltra tears and carboxymethyl cellulose.
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| CN103013138B (en) * | 2012-12-11 | 2014-10-15 | 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 |
| 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 |
| 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 |
| CN110078945B (en) * | 2019-05-28 | 2021-07-30 | 陕西科技大学 | Preparation method of gelatin-based high-strength hydrogel |
| 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 |
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