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Supermolecule material and self repairing hydrogel

A supramolecular and hydrogel technology, applied in the field of supramolecular chemistry, can solve problems such as inability to complete self-healing

Active Publication Date: 2019-06-07
佛山国防科技工业技术成果产业化应用推广中心
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For larger cracks, when the two sides of the self-healing material section do not touch, it is often necessary to manually fit the two ends of the section together, otherwise the self-healing cannot be completed

Method used

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  • Supermolecule material and self repairing hydrogel
  • Supermolecule material and self repairing hydrogel
  • Supermolecule material and self repairing hydrogel

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0090] The embodiment of the present invention provides the preparation method of formula 6 and formula 7, and the specific steps are as follows:

[0091] The preparation method of formula 6 is as follows: add p-toluenesulfonyl imidazole (8.9g, 40mmol) and β-cyclodextrin (β-CD, 35g, 30.84mmol) into 250ml of distilled water and stir to form a white suspension. After reacting for 4 hours under stirring at room temperature, 50 ml of sodium hydroxide solution with a mass fraction of 20% was added, and the stirring was continued for 30 min, and the reaction liquid changed from milky white to light yellow. Remove the insoluble matter by filtration, transfer the filtrate to a 500ml beaker, and add 1.5mol / L hydrochloric acid to adjust the pH to neutral. Place the beaker at 4°C for cooling and crystallization for 12 hours. Filter and wash the crude product with deionized water followed by acetone. Heated and recrystallized twice with deionized water, dried in vacuum for 48 hours, and...

Embodiment 2

[0094] The characterization detection carried out to formula six and formula seven of embodiment 1, the result is as follows:

[0095] Formula six:

[0096] 1 HNMR (400MHz, DMSO-d 6 ):5.60~5.89(m,14H),4.75~4.81(m,7H),4.15~4.62(m,6H),3.45~3.72(m,28H),3.15~3.47(m,14H),2.41(s ,3H),2.90-3.04(m,2H),2.69-2.79(m,1H).FT-IR(KBr,cm -1 ):3354,2929,2131,1705,1638,1414,1366,1233,1156,1028,946,859,756,706,580.ESI-MS(m / z):calculated,1171.4for C 45 h 73 o 34 N, found 1172.5 for [M+H] + .

[0097] Formula seven:

[0098] 1 HNMR (400MHz, CDCl 3 -d):4.64(2H),2.4(1H),2.0(3H),1.9(6H),1.7(6H).FT-IR(KBr,cm -1 ):3308,2907,2853,2129,1731,1453,1365,1345,1323,1269,1225,1183,1157,1103,1073,997.

Embodiment 3

[0100] The embodiment of the present invention provides the preparation method of Formula 1, and the specific steps are as follows:

[0101] Formula 1 (R 1 for ) preparation method is as follows: first by dipentaerythritol and 2-bromoisobutyryl bromide by esterification preparation dipentaerythritol base hexabromo ATRP initiator, this hexabromo initiator (0.0667g, 0.058mmol), NIPAM (4g, 35mmol), Me 6 TREN (0.080g, 0.35mmol) and 10mL solvent (V DMF :V 水 =80:20) into an anhydrous and oxygen-free bottle to fully dissolve. Vacuum-fill N 2 three times at N 2 Quickly add CuBr (0.0504g, 0.35mmol) under protection, vacuum-fill with N 2 three times. in N 2 Continue to stir the reaction for 2 h under protection, add 15 ml of THF to dilute after the reaction, and stir in air for 2 h, pass through a silica gel column to remove cuprous bromide. Spin off the excess solvent, add the product to glacial ether to precipitate, repeat 2-3 times to fully remove unpolymerized monomers. ...

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Abstract

The invention belongs to the technical field of supermolecule chemistry, and especially relates to a supermolecule material, which comprises a first construction unit, a second construction unit, anda third construction unit. The first construction unit comprises a structure represented by a formula one. The second construction unit comprises a structure represented by a formula two. The third construction unit comprises a structure represented by a formula three / four. The first construction unit, the second construction unit, and the third construction unit carry out self assembly to form the supermolecule material based on host-guest (adamantane-cyclodextrin). The invention also provides a hydrogel, which is prepared by mixing the first construction unit, the second construction unit, the third construction unit and water. The (adamantane-cyclodextrin) hosts-guests of the first construction unit, the second construction unit, and the third construction unit are dissolved and mixed to carry out self assembly, and finally the mixture is heated to a temperature of 35 to 50 DEG C to form the hydrogel. The problem that the structure of conventional hydrogel is disordered and nonadjustable is solved, and macroscopic large cracks can be self-repaired without artificial pasting.

Description

technical field [0001] The invention belongs to the technical field of supramolecular chemistry, and in particular relates to a supramolecular material and a self-repairing hydrogel. Background technique [0002] Self-healing is the most basic property of living organisms, such as skin and bone can automatically heal itself after injury. Hydrogels are usually soft and elastic, with a high water content. These properties make hydrogels very similar to biological tissue structures. Therefore, through reasonable design, hydrogel materials can also achieve self-healing functions similar to biological organisms. . Hydrogels with self-healing function can automatically repair the regional damage of materials caused by extreme external conditions (such as large deformation or external force damage), and restore the damaged gel to its shape and function, thereby prolonging the life of the gel material. Working life and service stability, optimize economic benefits, and realize the...

Claims

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Application Information

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IPC IPC(8): C08B37/16C08G83/00C08F251/00C08F220/56
Inventor 朱东雨洪展鹏薛延敏陈欣杰郭建维
Owner 佛山国防科技工业技术成果产业化应用推广中心
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