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A hydrogel, superhydrophobic technology, applied in chemical recycling and other directions, to achieve the effect of wide application range, mild conditions and low cost
Active Publication Date: 2011-05-25
WUXI ZHONGKE GUANGYUAN BIOMATERIALS
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So far, a lot of work has been done to apply this superhydrophobic property of lotus leaves to microfluidics, self-assembly technology, self-cleaning windshields of cars, non-wetting textiles, antennas and windows that do not stick to snow, and antibacterial Coatings, etc., an interesting application is the use of superhydrophobic surfaces to prepare self-assembled colloids for optical applications, but there is no research on the use of superhydrophobic surfaces for the preparation of biomaterials and biocontainers
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Embodiment 1
[0017] Prepare the hydrogel as follows:
[0018] (1) Preparation of superhydrophobic surface substrate: dissolving polystyrene in tetrahydrofuran solvent to prepare a solution with a concentration of 60 mg / mL, and then taking the solution and ethanol according to a volume ratio of 2: 1.3 to obtain a mixed solution; Spread the mixed solution on a smooth glass substrate, then immerse the glass substrate in ethanol for 60 seconds, take it out and dry it in a nitrogen flow, and further, in an argon environment, use a plasma with a power of 30W to After body modification for 20 seconds, it was modified with 1H, 1H, 2H, 2H-perfluorodecyltrimethoxysilane to obtain a superhydrophobic surface substrate;
[0019] (2) Preparation of hydrogel: dissolving chitosan with a weight-average molecular weight of 200,000 in water to prepare a chitosan solution with a concentration of 10 mg / mL, while adding water-soluble drug genipin, wherein genipin The concentration is 2 mg / mL, and the chitosan ...
Embodiment 2
[0021] Prepare the hydrogel as follows:
[0022] (1) Preparation of a superhydrophobic surface substrate: dissolving polytetrafluoroethylene in an acetone solvent to prepare a solution with a concentration of 50 mg / mL, and then taking the solution and ethanol at a volume ratio of 2:1 to obtain a mixed solution; Spread the mixed solution on a smooth silicon plate, then immerse the silicon plate in ethanol for 80 seconds, take it out and dry it in a nitrogen flow, and further, in an argon environment, use a plasma with a power of 30W to After body modification for 50 seconds, it was modified with 1H, 1H, 2H, 2H-perfluorodecyltrimethoxysilane to obtain a superhydrophobic surface substrate;
[0023] (2) Preparation of hydrogel: dissolve polyisopropylacrylamide with a weight average molecular weight of 100,000 in water to prepare a polyisopropylacrylamide solution with a concentration of 30 mg / mL, and add iron oxide magnetic particles at the same time, wherein, The concentration o...
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Abstract
The invention discloses a bionic method for preparing hydrogel, and the method comprises the following steps: preparing a super-hydrophobic surface substrate, accurately dispersing a water-macromolecular solution onto the super-hydrophobic surface substrate, and standing in a certain environment to obtain the hydrogel. The hydrogel prepared by the method disclosed by the invention can be easily peeled from the super-hydrophobic surface substrate, and the super-hydrophobic surface substrate can be reused; and the method disclosed by the invention is convenient to operate, thus the cost is effectively saved. Water-soluble medicaments, cells, proteins, magnetic particles or the like can be added into the water-macromolecular solution to obtain hydrogels with different functions, thereby realizing the high-efficiency wide-range transshipment. The hydrogel can also be used as an intelligent micro-container. The method disclosed by the invention has the advantages of simplicity, effectiveness, mild conditions and wide application prospects in the aspects of controlling the release of insecticide and fertilizer, and the like in food industry, cosmetic industry and agriculture.
Description
technical field [0001] The invention relates to a biomimetic preparation method of specific performance polymers, more specifically, a method for biomimetic preparation of hydrogels. Background technique [0002] Gel is a three-dimensional polymer network structure that can absorb and retain large amounts of water or biological fluids and has excellent biocompatibility. It is widely used in the fields of biomedicine, biotechnology and biochemistry, including support and regeneration of tissue engineering Medicine, bioselectors, drugs, gene and enzyme carriers, and encapsulation of cells and microorganisms. In order to meet the needs of various special applications, various methods have been proposed to prepare characteristic gels, among which chemical cross-linking methods include free radical polymerization, high-energy radiation method, enzymatic cross-linking and chemical cross-linking of redundant functional groups, etc. ; Physical crosslinking includes ionic bond inter...
Claims
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Application Information
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