Polyelectrolyte hydrogel based on unzipping effect as well as preparation method and application of polyelectrolyte hydrogel
A polyelectrolyte and hydrogel technology, applied in chemical instruments and methods, water pollutants, other chemical processes, etc., can solve the problems of complex synthesis, high cost, and insignificant improvement in efficiency, and achieve simplified synthesis steps and excellent swelling. performance, the effect of improving adsorption and capture efficiency
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[0027] A preparation method of polyelectrolyte hydrogel based on "unzipping" effect, comprising the following steps:
[0028] Step 101: In parts by mass, disperse 2-8 parts of polycationic component chitosan in 100-200 parts of deionized water, and stir for 40min-60min at 20°C-25°C to obtain chitosan dispersion liquid; wherein the viscosity of the polycationic component chitosan is 200-400mPa.s;
[0029] Step 102: In parts by mass, dissolve 2-8 parts of the polyanion component in 100-200 parts of deionized water, and stir for 40min-60min at 20°C-25°C to obtain a polyanion component solution; The polyanion component is sodium polyacrylate with a molecular weight of 2,000, sodium hyaluronate with a molecular weight of 1,900,000 or sodium alginate with a molecular weight of 110,000;
[0030] Step 103: After mixing the polycationic component chitosan dispersion obtained in step 101 and the polyanionic component solution obtained in step 102 uniformly, add 0.1-0.5 parts by mass of...
Embodiment 1
[0037] Step 1. Preparation of polyelectrolyte hydrogel with "unzipping" effect:
[0038] Step 101: In parts by mass, disperse 2 parts of chitosan, a polycationic component with a viscosity of 200 mPa.s, in 100 parts of deionized water, and stir for 40 minutes at 20°C to obtain a chitosan dispersion;
[0039] Step 102, in parts by mass, dissolve 2 parts of polyanion component sodium alginate in 100 parts of deionized water, and stir for 40 minutes at 20°C to obtain a sodium alginate solution;
[0040]Step 103: After mixing the polycationic component chitosan dispersion liquid obtained in step 101 and the sodium alginate solution obtained in step 102 evenly, add 0.1 part of glutaraldehyde in parts by mass, at a temperature of 20 °C Under stirring for 10min, a slurry mixture was obtained;
[0041] In step 104, the slurry mixture obtained in step 103 was allowed to stand for 10 minutes under vacuum conditions, and then poured into a mold, and the mold was exposed to an acetic aci...
Embodiment 2
[0046] Step 1. Preparation of polyelectrolyte hydrogel with "unzipping" effect:
[0047] Step 101: In parts by mass, disperse 8 parts of chitosan, a polycationic component with a viscosity of 300 mPa.s, in 200 parts of deionized water, and stir for 60 min at 25°C to obtain a chitosan dispersion;
[0048] Step 102, in parts by mass, dissolve 8 parts of polyanion component sodium hyaluronate in 200 parts of deionized water, and stir for 60 minutes at 25°C to obtain a sodium hyaluronate solution;
[0049] Step 103: After mixing the polycationic component chitosan dispersion obtained in step 101 and the sodium hyaluronate solution obtained in step 102 evenly, add 0.5 parts of glyoxal in parts by mass, at a temperature of 25°C. Stir under the conditions for 20min to obtain a slurry mixture;
[0050] In step 104, the slurry mixture obtained in step 103 was allowed to stand for 20 minutes under vacuum conditions, and then poured into a mold, and the mold was exposed to a formic acid...
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