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Column [5] aromatic hydrocarbon self-assembled elastomer material and preparation method thereof

An elastomer material and self-assembly technology, applied in the field of polymer materials, can solve the problems of difficult recycling, difficult degradation and limited application, and achieve the effect of easy operation, easy explanation and good repeatability

Active Publication Date: 2019-01-08
NANJING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the irreversibility of covalent bonds, traditional polymer materials also have some disadvantages, such as difficult to degrade, difficult to recycle, difficult to adapt to external environmental stimuli, and limited applications in drug encapsulation and controlled release, etc.

Method used

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  • Column [5] aromatic hydrocarbon self-assembled elastomer material and preparation method thereof
  • Column [5] aromatic hydrocarbon self-assembled elastomer material and preparation method thereof
  • Column [5] aromatic hydrocarbon self-assembled elastomer material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0036] Such as figure 1 Shown, a kind of preparation method of room temperature self-healing composite material comprises the following steps:

[0037] Weigh 90 mg (0.20 mmol) of trimethylolpropane tripropylene glycol ether (amino-terminated) and 83 mg (0.6 mmol) of potassium carbonate in a three-neck round bottom flask, then add 30 mL of acetonitrile, stir at room temperature for 30 min, and then add 100 g (5 mmol) of potassium iodide ), 500mg (0.6mmol) of bromopillar[5]arene, and reflux at 80°C for 24h. After the reaction, distilled water was added to the phase reaction system, and then extracted with dichloromethane (extracted three times), and the organic phase was taken; the crude product was obtained by rotary evaporation, and then impurity was removed by dialysis with chloroform solvent, and the target product was obtained by rotary evaporation, 1H NMR , 300MHz, CDCl 3 ,Such as Figure 4 shown.

Embodiment 1

[0038] Embodiment 1 prepares elastomeric composite material by self-assembly

[0039] Such as figure 1 Shown, a kind of preparation method of room temperature self-healing composite material comprises the following steps:

[0040] Step 1: Under a nitrogen atmosphere, stir and dissolve 1.54g of diisocyanate-terminated polypropylene glycol in 20mL of chloroform solvent;

[0041] Step 2: Dissolve 0.167g of 1-(3-aminopropyl)imidazole in 10mL of chloroform solvent, then add dropwise to the solution in step 1, and stir for 2 hours;

[0042] Step 3: Add 0.6 g of three-headed column[5]arene-capped propylene glycol to the solution in step 2, and continue stirring for 60 min to carry out self-assembly;

[0043] Step 4: Transfer the product obtained in Step 3 into a polytetrafluoroethylene mold, and dry it in a blast drying oven at 50° C. to obtain an elastomer composite material.

Embodiment 2

[0044] Embodiment 2 prepares elastomeric composite material by self-assembly

[0045] Such as figure 1 Shown, a kind of preparation method of room temperature self-healing composite material comprises the following steps:

[0046] Step 1: Under a nitrogen atmosphere, stir and dissolve 1.54g of diisocyanate-terminated polypropylene glycol in 20mL of chloroform solvent;

[0047] Step 2: Dissolve 0.167g of 1-(3-aminopropyl)imidazole in 10mL of chloroform solvent, then add dropwise to the solution in step 1, and stir for 2 hours;

[0048] Step 3: Add 1.2 g of three-headed column[5]arene-capped propylene glycol to the solution in step 2, and continue stirring for 30 minutes to carry out self-assembly;

[0049] Step 4: Transfer the product obtained in Step 3 into a polytetrafluoroethylene mold, and dry it in a blast drying oven at 50° C. to obtain an elastomer composite material.

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PUM

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Abstract

The invention discloses a column [5] aromatic hydrocarbon self-assembled elastomer material and a preparation method thereof, and belongs to the field of high polymer materials. The material is polymerized and obtained by adding a trichloromethane solvent into 1-(3-amino propyl) imidazole and diisocyanate-terminated polypropylene glycol and tri-column [5] aromatic hydrocarbon-terminated propyleneglycol at a certain temperature. The preparation method of the material mainly comprises the following steps: dissolving diisocyanate-terminated polypropylene glycol into the trichloromethane solvent,dissolving the 1-(3-amino propyl) imidazole into the trichloromethane solvent, dropwise adding the mixed solution of 1-(3-amino propyl) imidazole and the trichloromethane solvent into the mixed solution of diisocyanate-terminated polypropylene glycol and the trichloromethane solvent, carrying out a backflow stirring reaction, adding the tri-column [5] aromatic hydrocarbon-terminated propylene glycol, enabling the components to react continuously, pouring the product into a polytetrafluoroethylene grinding tool after the reaction is completed, blowing air for drying at 50 DEG C to obtain a polymer composite material with certain mechanical strength and toughness. Compared with the prior art, the material is simple in preparation process, high in preparation efficiency and applicable to industrial large-scale production.

Description

technical field [0001] The invention belongs to the field of polymer materials, and in particular relates to an elastomer composite material formed by self-assembly of pillar [5] arene host and guest and a preparation method thereof. Background technique [0002] Traditional polymer materials are formed by covalently connecting small molecular monomers. Through ingenious design, we can endow them with good optical, electrical and mechanical properties to meet the needs of social development for materials. However, due to the irreversibility of covalent bonds, traditional polymer materials also have some disadvantages, such as difficult to degrade, difficult to recycle, difficult to adapt to external environmental stimuli, and limited applications in drug encapsulation and controlled release. However, non-covalent bonds such as multiple hydrogen bonds, π-π stacking, metal coordination bonds, hydrophilic-hydrophobic interactions, host-guest recognition, etc., are dynamic bonds...

Claims

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Application Information

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IPC IPC(8): C08G18/66C08G18/48C08G18/32C08G18/28
CPCC08G18/2865C08G18/3215C08G18/4825C08G18/6674
Inventor 傅佳骏陈未叶盛
Owner NANJING UNIV OF SCI & TECH
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