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Colorful encoded supermolecule hydrogel and preparation method thereof

A supramolecular hydrogel and color technology, applied in the field of colored hydrogel, can solve problems such as single color, easy migration of small molecule pigments, and unstable chroma

Active Publication Date: 2019-12-03
SUZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, in the current methods for preparing colored hydrogels, the color hydrogels with simple physical adsorption and embedding pigments have problems such as poor chroma (small molecule pigments are easy to migrate) and the like; Disadvantages of singleness and poor stability

Method used

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  • Colorful encoded supermolecule hydrogel and preparation method thereof
  • Colorful encoded supermolecule hydrogel and preparation method thereof
  • Colorful encoded supermolecule hydrogel and preparation method thereof

Examples

Experimental program
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Embodiment 1

[0053] This embodiment provides a preparation method of red supramolecular hydrogel (RPUU hydrogel), the specific steps are as follows:

[0054] (1) Weigh 4.00g (2mmol) PEG (Mn=2000g / mol) in a 100mL three-neck flask, place it in a vacuum oven at 80°C to dry overnight, and place a small amount of phosphorus pentoxide in the vacuum oven at the same time to facilitate Remove all water. After drying, take out the three-necked flask, place it in an oil bath at normal temperature, add 10 mL of DMAC dried in advance with anhydrous sodium sulfate into the three-necked flask with a measuring cylinder, and add a magnet to stir. Then add 0.1450g (0.98mmol) of dimethylolbutyric acid (DMBA), 0.02mmol of red small molecule chain extender, 2.67g (12mmol) of isophorone diisocyanate (IPDI) and 20μL of dibutyl dilaurate Tin (catalyst). Among them, the structural formula of the red small molecule chain extender is as follows:

[0055]

[0056] (2) The above mixture was heated to 70°C and t...

Embodiment 2

[0062] The present embodiment provides a kind of preparation method of yellow supramolecular hydrogel (YPUU hydrogel), and concrete steps are as follows:

[0063] (1) Weigh 4.00g (2mmol) PEG (Mn=2000g / mol) in a 100mL three-neck flask, place it in a vacuum oven at 80°C to dry overnight, and place a small amount of phosphorus pentoxide in the vacuum oven at the same time to facilitate Remove all water. After drying, take out the three-necked flask, place it in an oil bath at normal temperature, add 10 mL of DMAC dried in advance with anhydrous sodium sulfate into the three-necked flask with a measuring cylinder, and add a magnet to stir. Then add 0.1450 g (0.98 mmol) of DMBA, 0.02 mmol of yellow small molecule chain extender, 2.67 g (12 mmol) of IPDI and 20 μL of dibutyltin dilaurate (catalyst). Among them, the structural formula of the yellow small molecule chain extender is as follows:

[0064] (2) The above mixture was heated to 70°C and then heated and stirred for 4 hour...

Embodiment 3

[0069] The present embodiment provides a kind of preparation method of blue supramolecular hydrogel (BPUU hydrogel), and concrete steps are as follows:

[0070] (1) Weigh 4.00g (2mmol) PEG (Mn=2000g / mol) in a 100mL three-neck flask, place it in a vacuum oven at 80°C to dry overnight, and place a small amount of phosphorus pentoxide in the vacuum oven at the same time to facilitate Remove all water. After drying, take out the three-necked flask, place it in an oil bath at 70°C, add 10 mL of DMAC dried with anhydrous sodium sulfate into the three-necked flask with a measuring cylinder, and add a magnet to stir. Then add 0.1450 g (0.98 mmol) DMBA, 0.02 mmol blue small molecule chain extender, 12 mmol IPDI and 20 μL dibutyltin dilaurate (catalyst). Among them, the structural formula of the blue small molecule chain extender is as follows:

[0071] (2) The above mixture was heated to 70°C and then heated and stirred for 4 hours, then the reaction system was cooled to 50°C, and ...

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Abstract

The invention relates to a colorful encoded supermolecule hydrogel and a preparation method thereof. Three-primary color colorful polyurethane urea macromolecule gel factors are prepared from red, yellow and blue three-primary color (three-primary colors of a pigment) small molecule diol as a colorful chain extender. Furthermore, according to the mixing and color matching principle of the three-primary colors, by adjusting the ratio of the three-primary color colorful macromolecule gel factors, high-strength (the rupture stress is about 8MPa, and the elongation at break is as high as 750-1200%) supermolecule hydrogel which is encoded by colors of a whole color series is prepared. Properties such as physical properties, chemical components, mechanical properties and application of the obtained high-strength supermolecule hydrogel are visibly marked and recognized by using colors for a first time.

Description

technical field [0001] The invention relates to a colored hydrogel, in particular to a color-coded supramolecular hydrogel and a preparation method thereof. Background technique [0002] Hydrogel is a three-dimensional network soft substance formed by hydrophilic / amphiphilic small molecules or polymers through physical or chemical crosslinking, which can absorb a large amount of water and swell but is insoluble in water. Due to their high water content properties and biocompatibility, hydrogels are promising for a wide range of applications. Chinese patents with application numbers 201310518085.8 and 201410046298.X respectively disclose high-strength polyurethane urea supramolecular hydrogels, but most of the reported hydrogels are colorless, transparent or light-colored, and have a single color. However, hydrogels with different chemical components and physical properties have different uses and are suitable for different applications. Its similar appearance and single co...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G18/66C08G18/48C08G18/34C08G18/32
CPCC08G18/329C08G18/348C08G18/3836C08G18/4833C08G18/6692
Inventor 郭明雨陈连敏
Owner SUZHOU UNIV