Force-induced responsive supramolecular polymer

A technology of supramolecular polymers and supramolecules, applied in the field of force-responsive supramolecular polymers, can solve problems such as difficult to meet the needs of multifunctional and intelligent materials, single properties and performances, etc.

Pending Publication Date: 2020-07-07
厦门天策材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, at present, ordinary polymers containing force-sensitive groups have relatively single properties and performances, and it is difficult to meet the needs of various high-tech materials for multifunctional and intelligent materials.

Method used

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  • Force-induced responsive supramolecular polymer
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  • Force-induced responsive supramolecular polymer

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[1663] In the preparation process of the mechanoresponsive supramolecular polymer composition, there is no special limitation on the amount of each component raw material of the mechanoresponsive supramolecular polymer. performance adjustments.

[1664] In an embodiment of the present invention, the form of the mechanoresponsive supramolecular polymer can be solution, paste, glue, common solid, elastomer, gel (including hydrogel, organogel, oligomer swelling gels, plasticizer-swelled gels, ionic liquid-swelled gels), foams, etc. Among them, the content of soluble small molecular weight components contained in ordinary solids and foam materials is generally not higher than 10wt%, while the content of small molecular weight components contained in gels is generally not lower than 50wt%. Ordinary solids have relatively fixed shape and volume, better mechanical strength, and are not bound by organic swelling agents or water. Elastomers have the general properties of ordinary sol...

Embodiment 1

[1677] Example 1 2 molar equivalents of carboxy-terminated polybutadiene (average molecular weight is 1.5kDa) and 1 molar equivalent of diol supramolecule a containing force-sensitive groups in dicycloethylcarbodiimide (DCC) and 4- Under the catalysis of dimethylaminopyridine (DMAP), the polybutadiene whose skeleton contains a force-sensitive group and whose two ends are terminated with carboxyl groups is obtained. 1 molar equivalent of polybutadiene obtained and 2 molar equivalents of ligand compound b are reacted under the catalysis of DCC and DMAP to obtain a polybutadiene supramolecular unit whose skeleton contains a force-sensitive group and both ends are terminated by ligand groups. Body A. Ligand compound b and excess polybutadiene (average molecular weight is 2kDa) terminated by carboxyl groups at both ends are reacted under the catalysis of DCC and DMAP to obtain polybutadiene with ligand group at one end and carboxyl group at the other end . The polybutadiene obtai...

Embodiment 2

[1680] Example 2 A hexafunctional initiator was obtained by reacting 1 molar equivalent of compound a containing a mesensitizing group with excess 2-bromoisobutyryl bromide under the catalysis of triethylamine. Reaction of equimolar equivalents of acryloyl chloride and pyridazine-3-methanol under the catalysis of triethylamine to obtain ligand group-containing acrylate monomer b. With 1 molar equivalent of the obtained hexafunctional initiator as the initiator, cuprous bromide and PMDETA are used as the initiator to initiate the polymerization of 600 molar equivalents of ethyl acrylate, and continue to initiate 150 molar equivalents of dimethylaminoacrylate after the reaction is complete. Polymerization of the mixture of ethyl ester and 150 molar equivalents of monomer b to obtain a six-armed polyacrylate copolymer polymer supramolecular monomer with part of side groups being ligand groups.

[1681]

[1682] Blend the obtained supramolecular monomer with a certain amount of...

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Abstract

The invention discloses a force-induced responsive supramolecular polymer. The force-induced responsive supramolecular polymer comprises a force-sensitive group and at least one metal-ligand interaction, wherein at least part of the metal-ligand interaction forms phase separation and/or crystallization; and the metal-ligand interaction is a necessary condition for forming the supramolecular polymer. By combining the force-sensitive group and the force-sensitive group, the force-induced responsive supramolecular polymer disclosed by the invention has good dynamics, self-repairability and toughness, and is widely applied to the aspects of detection, sensing, warning materials and the like.

Description

technical field [0001] The invention relates to an intelligent material, in particular to a force-responsive supramolecular polymer. Background technique [0002] During the use of polymer materials, the probability of being subjected to mechanical force is extremely high. However, mechanical forces often have destructive effects on polymer materials, such as fatigue, fracture, wear and so on. If the action of mechanical force can be converted into a beneficial action, the application range of the material will be greatly improved, and even the lifespan will be greatly extended. Introducing force-sensitive groups that can directly and / or indirectly produce specific chemical and / or physical responses under mechanical force into the polymer structure can obtain beneficial signal output or generate new substances and new structures, etc., It plays a very important role in improving the function of polymer materials. However, at present, ordinary polymers containing force-sen...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G83/00
CPCC08G83/008
Inventor 不公告发明人
Owner 厦门天策材料科技有限公司
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