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Supramolecular polymer based on lipoic acid compound and preparation method thereof

A technology of supramolecular polymers and lipoic acid, which is applied in the field of supramolecular polymers and its preparation, can solve the problems of rare monomers or low-molecular polymers of supramolecular polymers, etc.

Active Publication Date: 2018-09-04
EAST CHINA UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The disadvantage of the prior art is that monomers or low molecular polymers for the preparation of supramolecular polymers are rare (need self-made)

Method used

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  • Supramolecular polymer based on lipoic acid compound and preparation method thereof
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  • Supramolecular polymer based on lipoic acid compound and preparation method thereof

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preparation example Construction

[0031] The method for preparing supramolecular polymer of the present invention provided by the present invention, its main steps are: under solvent-free condition, lipoic acid or / and its derivative are placed in the reaction vessel with stirring device, stirred and heated ( The temperature of the oil bath is 70°C-200°C), after the lipoic acid or / and its derivatives are melted, add the cross-linking agent to the reaction vessel according to the molar ratio mentioned above, after the completion, continue to stir for 5-8 minutes , and then add the iron source into the reaction vessel according to the molar ratio mentioned above. After the completion, stir for another 3 minutes to 5 minutes, stop heating, and obtain the target product after cooling.

[0032] The present invention has following characteristics:

[0033] 1. The raw materials used in the present invention are beneficial to the human body, biocompatible, widely sourced, cheap and easy to obtain, and have industrial f...

Embodiment 1

[0040] 10g of lipoic acid powder is placed in a reactor with a stirring device, the oil bath is heated to the lipoic acid powder melting, and stirring is started. Then add 6 g (60 wt%) of 1,3-bis(1-methylvinyl)benzene (DIB) into the reactor, and continue heating and stirring for 5 minutes. Add 0.1 g of ferric chloride in acetone solution to the reactor, continue heating and stirring for 3 minutes, stop heating, and cool to room temperature to obtain supramolecular polymer-1.

Embodiment 2～8

[0042] Except for changing the types of monomers and cross-linking agents, and the molar ratio of monomers, cross-linking agents and iron sources, the rest of the steps and conditions were the same as in Example 1 to obtain different supramolecular polymers, see Table 1 for details.

[0043] Table 1

[0044]

[0045] The appearance of the supramolecular polymer provided by the present invention (taking supramolecular polymer-1 as an example) see figure 1 .; The provided supramolecular polymer rheological performance curve (taking supramolecular polymer-2 as an example) see figure 2 .; and the structural characterization of supramolecular polymers provided (taking supramolecular polymer-3 as an example) see image 3 ..

[0046] Testing of self-healing (cohesive) properties, tensile properties and thermal response properties of supramolecular polymers

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Abstract

The invention relates to a supramolecular polymer based on lipoic acid or / and derivatives thereof and a preparation method thereof. The supramolecular polymer is mainly obtained by hot melting and mixing of the lipoic acid or / and derivatives thereof, a crosslinking agent and an iron source. The molar ratio of the lipoic acid or / and the derivatives thereof to the crosslinking agent to the iron source is 2:(0.1-1.5):(0.01-1); the lipoic acid or / and the derivatives thereof are selected from one of or a mixture of two or more compounds shown in formula I; and the crosslinking agent is a hydrocarbon compound containing carbon-carbon unsaturated bonds, and the iron source consists of an iron salt and an organic solvent capable of dissolving the iron salt. The supramolecular polymer provided bythe invention has the stretchability of more than 150 times and can repair itself at room temperature in an ultra-fast manner. In formula I (as described in the specification), R1 is hydrogen or C1-C4linear or branched alkyl, R2 is hydrogen or carboxyl, and n is an integer of 1-5.

Description

technical field [0001] The invention relates to a supramolecular polymer and a preparation method thereof, in particular to a supramolecular polymer based on lipoic acid or / and its derivatives and a preparation method thereof. Background technique [0002] Supramolecular polymers refer to polymers that are self-assembled by small molecular monomers or low molecular polymers through non-covalent interactions. Factors such as pH, temperature, and light will cause the dissociation and reorganization of the non-covalent bonds of supramolecular polymers, which are reversible. Therefore, supramolecular polymers are smart materials that can be used as self-repairing and self-healing. In recent years, it has become one of the research hotspots at home and abroad. [0003] Supramolecular polymers are used in a wide range of fields, such as modified smart materials, electronic devices, and biomaterials. In recent years, its application research in the field of biology and biomedicin...

Claims

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Application Information

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IPC IPC(8): C08G83/00
CPCC08G83/008
Inventor 曲大辉施晨宇郑秀丽张琦赵蔡鑫饶斯佳田禾
Owner EAST CHINA UNIV OF SCI & TECH
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