Amphiphilic fluorinated acrylate penta-block copolymer and preparation method thereof

A technology of acrylate and methacrylate, which is applied in the field of amphiphilic fluorine-containing acrylate pentablock copolymer and its preparation, can solve the problems of difficult separation process, low synthesis efficiency, and many separation steps, and achieve product yield high yield, increased yield, and mild reaction conditions

Inactive Publication Date: 2013-03-13
NORTHWESTERN POLYTECHNICAL UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the use of metal complexes as catalysts in the ATRP reaction, the separation process of the product is more difficult, especially for the step-by-step synthesis of multi-block copolymers with more than three blocks, the separation steps will be more, the synthesis efficiency is low, and the cost higher

Method used

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  • Amphiphilic fluorinated acrylate penta-block copolymer and preparation method thereof
  • Amphiphilic fluorinated acrylate penta-block copolymer and preparation method thereof
  • Amphiphilic fluorinated acrylate penta-block copolymer and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] 1) Under the protection of nitrogen atmosphere (purity is more than 99.99% by mass ratio), 1 part of polyethylene glycol (molecular weight is 4000), 4 parts of 2-bromopropionyl bromide, 4 parts of three Ethylamine was reacted with 0.25 parts of 4-dimethylaminopyridine in an ice-water bath. After the addition is complete, react at 30°C for 24 hours, filter after the reaction, then evaporate half of the solvent, precipitate with n-hexane, dissolve the precipitate with methylene chloride, and then precipitate with n-hexane, repeat precipitation-dissolution-precipitation 3 times, The product is dried in a vacuum drying oven to constant weight to obtain an active bromine-terminated macromolecular initiator of polyethylene glycol.

[0027] 2) Under the protection of nitrogen (purity exceeds 99.99% by mass ratio) atmosphere (the reaction system must be strictly deoxygenated), in molar parts, 1 part of active bromine-terminated polyethylene glycol is used as the initiator, 1.5 ...

Embodiment 2

[0030] 1) Except that polyethylene glycol (molecular weight is 2000) is one part, the others are the same as step 1 in Example 1);

[0031] 2) Except for 150 parts of methacrylate, 150 parts of fluorine-containing acrylate, and a reaction temperature of 80°C, the same as step 2 in Example 1);

[0032] An amphiphilic fluorine-containing acrylate pentablock copolymer was prepared.

Embodiment 3

[0034] 1) Except for 3 parts of 2-bromopropionyl bromide and 3 parts of triethylamine, the others are the same as step 1 in Example 1);

[0035] 2) Except for 200 parts of fluorine-containing acrylate and a reaction time of 10 hours, the others are the same as step 2 in Example 1);

[0036] An amphiphilic fluorine-containing acrylate pentablock copolymer was prepared.

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Abstract

The invention relates to an amphiphilic fluorinated acrylate penta-block copolymer and a preparation method thereof. The technical characteristics are that a name is amphiphilic fluorinated acrylate penta-block copolymer, namely poly-fluorinated acrylate-b-polymethacrylate-b-polyethylene glycol-b-polymethacrylate-b-poly-fluorinated acrylate. A synthetic method uses a bromine-terminated polyethylene glycol as a macro-molecule initiator and uses a one-pan way to gradually charge, that is performs an atom transfer radical polymerization reaction of the macro-molecule initiator with methacrylate, and after the reaction ends, directly adds the fluorinated acrylate to obtain the amphiphilic fluorinated acrylate penta-block copolymer through the atom transfer radical polymerization reaction. The copolymer and the preparation method have advantages of mild reaction condition, simple operation, reduced steps, high product yield, reduced cost, clear product structure and narrow molecular weight distribution, can save time and raw materials, and has potential application in fields of LCD, aerospace coating, photoconductive material, nano-carbon material, pharmaceutical carriers, etc.

Description

technical field [0001] The invention belongs to the field of polymer synthesis, and in particular relates to an amphiphilic fluorine-containing acrylate pentablock copolymer and a preparation method thereof. Background technique [0002] Fluoropolymers are a class of functional polymers with excellent dielectric properties, high hydrophobicity, high thermo-oxygen stability, excellent optical properties and chemical stability. However, fluorine materials are expensive and have poor processability. Polyethylene glycol and methacrylate are relatively cheap, among which polyethylene glycol has good biocompatibility and hydrophilicity, and methacrylate and fluorine-containing acrylate have good hydrophobicity. Designing an effective synthesis method to synthesize a copolymer containing these monomers, and adjusting its structural parameters to meet the requirements of different functions, formability and price has become an effective way to solve the current problems of fluoropo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F293/00C08F220/14C08F220/18C08F220/22C08F220/24
Inventor 马晓燕栗志广强秀余杰张杰
Owner NORTHWESTERN POLYTECHNICAL UNIV
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