Polyethylene glycol (PEG)-b-polystyrene (PSt)-b-perfluorohexylethyl acrylate (PFHEA) and preparation method thereof

The technology of fluorohexyl ethyl acrylate and polyethylene glycol is applied in the field of amphiphilic triblock copolymer and its synthesis, and can solve the problems of wide molecular weight distribution, no clear molecular structure and composition, low yield and the like, Achieve the effect of narrow molecular weight distribution, low interfacial energy and surface energy, and mild reaction conditions

Inactive Publication Date: 2011-09-28
SHANDONG JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These three methods have their own disadvantages: for example, the method of attaching fluorine-containing groups to the main chain of other polymers and the method of attaching other groups to the main chain of fluoropolymers usually need to be completed under high temperature or catalysis reaction and low yield; and the polymer obtained by copolymerizing fluorine-containing monomers with one or more than one vinyl monomers is a random copolymer without a clear molecular structure and composition, and the molecular weight distribution is comparatively low. Wide (>1.5)

Method used

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  • Polyethylene glycol (PEG)-b-polystyrene (PSt)-b-perfluorohexylethyl acrylate (PFHEA) and preparation method thereof
  • Polyethylene glycol (PEG)-b-polystyrene (PSt)-b-perfluorohexylethyl acrylate (PFHEA) and preparation method thereof
  • Polyethylene glycol (PEG)-b-polystyrene (PSt)-b-perfluorohexylethyl acrylate (PFHEA) and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] 1) Under the protection of nitrogen (purity exceeds 99.99% by mass ratio) atmosphere, 1 part of polyethylene glycol monomethyl ether (number average molecular weight is 750), 1.5 parts of 2-bromoiso Butyryl bromide was reacted with 2 parts of triethylamine under ice-water bath. After the feeding is complete, continue to react at room temperature for 24 hours, filter after the reaction, add dichloromethane to the filtrate, wash with saturated sodium bicarbonate solution, deionized water, hydrochloric acid with a concentration of 0.1mol / L and deionized water successively, and repeat the washing 3 times, liquid separation, the organic layer was dried with anhydrous magnesium sulfate, and then filtered, and the filtrate was distilled off under reduced pressure to remove the dichloromethane solvent to obtain a light yellow active bromine-terminated polyethylene glycol macromolecular initiator;

[0030] 2) Under the protection of nitrogen (purity exceeds 99.99% by mass ratio)...

Embodiment 2

[0034] 1) Except that polyethylene glycol monomethyl ether (the number average molecular weight is 2000) is 1 part, other are the same as step 1 in the embodiment 1);

[0035] 2) Except that the styrene monomer is 300 parts and the reaction temperature is 100° C., the others are the same as step 2 in Example 1);

[0036] 3) Except that the reaction temperature is 80°C and the reaction time is 8h, other steps 3) are the same as in Example 1;

[0037] A fluorine-containing tri-block copolymer of polyethylene glycol-b-polystyrene-b-polyperfluorohexyl ethyl acrylate was obtained.

Embodiment 3

[0039] 1) Except that 2-bromoisobutyryl bromide is 3 parts and triethylamine is 4.5 parts, other are the same as step 1 in Example 1);

[0040] 2) except that styrene monomer is 300 parts, reaction temperature 90 ℃, other are the same as step 2 in embodiment 1);

[0041] 3) Except that the reaction temperature is 80°C and the reaction time is 8h, other steps 3) are the same as in Example 1;

[0042] A fluorine-containing tri-block copolymer of polyethylene glycol-b-polystyrene-b-polyperfluorohexyl ethyl acrylate was obtained.

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Abstract

The invention discloses PEG-b-PSt-b-PFHEA. The PEG-b-PSt-b-PFHEA is prepared by treating bromine-terminated PEG as a macroinitiator, obtaining a PEG-b-PSt diblock copolymer through an atom transfer radical polymerization reaction, and treating the diblock copolymer as the macroinitiator to initiate PFHEA monomer polymerization. The preparation method has the advantages of mild reaction conditions, economy, simple operation and high product yield. The product of the present invention has a clearer structure and a narrower molecular weight distribution than products prepared by common radical polymerization reactions, and has a microphase separation structure, and low interfacial energy and surface energy which allow protein adsorption to be inhibited.

Description

technical field [0001] The invention relates to a fluorine-containing amphiphilic tri-block copolymer and its synthesis, in particular to a polyethylene glycol-b-polystyrene-b-polyperfluorohexyl ethyl acrylate and a preparation method thereof . Background technique [0002] The research on environment-friendly biomimetic antifouling coatings has aroused people's widespread attention. Polyethylene glycol-b-polystyrene-b-polyperfluorohexyl ethyl acrylate is a new type of fluorine-containing amphiphilic triblock copolymer with microphase separation structure, which has not been reported so far; The diol block has low interfacial energy, the polyperfluorohexylethyl acrylate block has very low surface energy, and the polystyrene block can provide sufficient adhesion, so it is expected to be used in antifouling coatings, surface The active agent field is widely used. Polyethylene glycol has good biocompatibility and hydrophilicity, and it can form a stable hydration layer on th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F293/00
Inventor 唐新德庞来学韩念凤
Owner SHANDONG JIAOTONG UNIV
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