Force-induced responsive multiphase supramolecular block polymer

A technology of block polymers and molecular blocks, applied in the field of force-responsive multi-phase supramolecular block polymers, can solve problems such as difficult to meet the needs of multi-functional and intelligent materials, single properties and performance, 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

AI Technical Summary

Problems solved by technology

However, at present, ordinary polymers containing force-sensitive groups have relatively single properties and performan

Method used

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  • Force-induced responsive multiphase supramolecular block polymer
  • Force-induced responsive multiphase supramolecular block polymer
  • Force-induced responsive multiphase supramolecular block polymer

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach

[0040] According to another embodiment of the present invention, there is provided a method for realizing mechanotropic response, which is characterized in that a mechanotropic response heterogeneous supramolecular block polymer is provided, which contains at least one kind of The block polymer supramolecular monomer of section; Contain at least a kind of supramolecular effect in the described block polymer supramolecular monomer, wherein, each hard segment is mixed with each other and / or each independently forms and soft segment Incompatible hard phases to form phase-separated physical crosslinking and / or polymerization based on hard segments, the soft segments of the block polymer molecules are mixed with each other and / or each independently forms an amorphous soft segment phase; the mechanoresponsive multiphase supramolecular block polymer contains a mechanosensitive group, which is located in the supramolecular monomer of the block polymer and / or other supramolecular monome...

Embodiment 1

[1760] Example 1 Dissolve limonene oxide and catalyst in toluene under anhydrous and air-free conditions of 90°C, keep the molar ratio of limonene oxide and catalyst at 200:1, feed 10bar carbon dioxide into the reaction vessel, and after the reaction is complete, the crude The product was precipitated with methanol to obtain polylimonene carbonate segment A. Reacting equimolar equivalents of heptafluoro-2-naphthol with mercaptoacetic acid under the catalysis of DCC and DMAP to obtain fluoronaphthalene a with a mercapto group at one end. Polymer A and the resulting compound a, 3-phenyl-1-propanethiol, mercaptoethanol, and 3-mercaptopropionic acid n-butyl react under the catalysis of triethylamine to keep the polymer pendant alkenyl, compound a , 3-phenyl-1-propanethiol, and 3-mercapto propionate in a molar ratio of 10:2:2:1:5 to obtain a polymer B in which some side groups are supramolecular groups. A certain amount of 2-maleimidoacetic acid and polymer B are reacted under the...

Embodiment 2

[1763] Example 2 1-adamantane methanol and excess polypropylene glycol (average molecular weight is about 1000 Da) terminated by carboxyl groups at both ends were reacted under the catalysis of DCC and DMAP to obtain polypropylene glycol A with an adamantyl group at one end and a carboxyl group at the other end. React the obtained polymer A with equimolar equivalents and the compound a containing the mesensitizing group under the catalysis of DCC and DMAP to obtain polypropylene glycol B with an alkenyl group at one end and an adamantyl group at the other end. The obtained polymer B and polyethylene glycol (average molecular weight about 8000 Da) with a mercapto group at one end were subjected to a mercapto-ene click reaction to obtain a diblock polymer C. The mechanotropic responsive heterogeneous supramolecular block polymer of the present invention is obtained by blending the polymer C and the bifunctional cyclodextrin in equimolar equivalents.

[1764]

[1765] The micell...

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Abstract

The invention discloses a force-induced responsive multiphase supramolecular block polymer, which at least contains a block polymer supramolecular monomer with hard phases and soft phases at the sametime, wherein the block polymer supramolecular monomer contains at least one supramolecular interaction; the hard phases are mutually mixed to and/or independently form the hard phases incompatible with the soft phases; and the soft phases are mutually mixed to and/or independently form the soft phases in an amorphous state; the polymer contains a force-sensitive group which is positioned in the block polymer supramolecular monomer and/or selectively exists in other supramolecular monomers; under the action of mechanical force, the polymer realizes force-induced response. By combining the force-sensitive group, the supramolecular interaction, the hard phases and the soft phases, the polymer disclosed by the invention can have good dynamics, self-repairability, processability, super-toughness and shape memory, and can be 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 multi-phase supramolecular block 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 co...

Claims

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Application Information

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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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