Length-controllable liquid crystal segmented copolymer micelle and preparation method thereof

A block copolymer and block polymer technology are applied in the field of liquid crystal block copolymer micelles and their preparation, which can solve the problems of large batch size difference, high preparation cost, difficult micelle size and the like, and achieve production Low cost, simple steps, and low polydispersity coefficient

Active Publication Date: 2021-01-01
扬州迈尔斯新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003]However, the current self-assembly method of crystalline block copolymer solution is difficult to directly control the size of micelles. The shape and size of micelles are effectively controlled, but the method has a long cycle, many steps, large size differences between batches, and high preparation costs

Method used

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  • Length-controllable liquid crystal segmented copolymer micelle and preparation method thereof
  • Length-controllable liquid crystal segmented copolymer micelle and preparation method thereof
  • Length-controllable liquid crystal segmented copolymer micelle and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] A preparation method of diblock polymer nano micelles, comprising: weighing block copolymer P2VP according to the above ratio 68 -b-PFMA 41 1.00mg, 0.09mg of phenylselenium bromide and 0.009mg of 4-dimethylaminopyridine were dispersed in 10ml of isopropanol to form a solution, and then the solution was heated to 80°C and kept at constant temperature for 30min, then cooled down to room temperature, that is Obtain; After measuring, the polymer nanomicelle average length is a columnar micelle of 337nm, and the dispersion coefficient is 1.000 (such as figure 1 shown in a).

Embodiment 2

[0028] A preparation method of diblock polymer nano micelles, comprising: weighing block copolymer P2VP according to the above ratio 400 -b-PFMA 42 Disperse 1.0mg, 0.005mg of phenylselenium bromide and 0.0006mg of 4-dimethylaminopyridine into 10ml of methanol to form a solution, then heat the solution to 80°C for 30min at a constant temperature, and then cool down to room temperature to obtain the product; After measuring, described polymer nanomicelle average length is the columnar micelle of 1600nm, dispersion coefficient is 1.003 (as figure 2 shown in a).

Embodiment 3

[0030] A preparation method of diblock polymer nano micelles, comprising: weighing block copolymer P2VP according to the above ratio 262 -b-PFMA 53 0.5mg, 0.0004mg of phenylselenium bromide and 0.0001mg of 4-dimethylaminopyridine were dispersed in 10ml of isopropanol to form a solution, and then the solution was heated to 80°C and kept at constant temperature for 30min, then cooled down to room temperature, that is Obtain; After measuring, the polymer nanomicelle average length is the columnar micelle of 4576nm, and dispersion coefficient is 1.006 (as image 3 shown in a).

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Abstract

The invention provides a two-block polymer nano-micelle, a two-block polymer in the micelle is poly (2-vinylpyridine-b-poly2-(-perfluorooctyl) ethyl methacrylate (namely P2VP-b-PFMA), and the micelleis prepared by dispersing a block copolymer P2VP-b-PFMA, phenyl selenium bromide and 4-dimethylaminopyridine in isopropanol, heating, cooling and preparing. After 4-dimethylaminopyridine is added as acocatalyst in the preparation of the diblock polymer nano-micelle, the size of the formed micelle can be accurately controlled, the particle size distribution of the micelle is more centralized, theexperiment period is short, the steps are simple, the repeatability is good, the production cost is lower, and the industrial production is facilitated.

Description

technical field [0001] The invention relates to the technical field of surface-modified functional micro-nano structures, in particular to a length-controllable liquid crystal block copolymer micelle and a preparation method thereof. Background technique [0002] The precise synthesis of multi-level fine structures ubiquitous in biological systems has captured the imagination of materials scientists striving to mimic the complexity, homogeneity, and versatility of naturally occurring systems. In recent years, the prior art has discovered some methods to prepare nanomaterials with fine structure, for example, solid-state aggregation of giant amphiphilic molecules to form ordered morphology; controlled crystallization of nanoparticles to generate superlattice, crystal block copolymerization The epitaxial growth of objects to produce exotic nanostructures; the directional assembly of sheet-like colloidal nanoparticles to construct multidimensional hierarchical structures; the f...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J3/09C08L53/00C08K5/48C08K5/3432
CPCC08J3/095C08J2353/00C08K5/48C08K5/3432
Inventor 李霄羽金碧鑫江卫杰
Owner 扬州迈尔斯新材料科技有限公司
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