Amphipathic fluoride block copolymer and production thereof

A block copolymer and amphiphilic technology, applied in the field of amphiphilic fluorine-containing block copolymer and its preparation, can solve the problems of influence of polymer properties, difficult to remove, etc., and achieve fast reaction speed, easy purification and improvement Effect of temperature/pH responsive performance

Inactive Publication Date: 2006-08-16
SUZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Like ATRP, although the RAFT method has the characteristics of mild reaction conditions, the RAFT reagent added in the polymerization is difficult to remove in the final polymer, which has a certain impact on the performance of the polymer.

Method used

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  • Amphipathic fluoride block copolymer and production thereof
  • Amphipathic fluoride block copolymer and production thereof
  • Amphipathic fluoride block copolymer and production thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] Example 1: MePEG-b-PDMAEMA-b-POFPMA and its preparation

[0044] (1) Preparation of KH: Put the stirring rotor into a dry reaction bottle in advance, and plug it tightly with a reversible rubber stopper. Then use a needle and a latex tube to connect with a vacuum pump, and fill it with high-purity argon gas while vacuuming, and repeat the operation three times. After moving a certain amount of KH into the reaction bottle, inject 5ml of dry THF with a dry syringe, stir and wash, and suck out the THF containing mineral oil with a syringe after resting, repeat this three times, and finally dry the residual THF solution with high-purity argon. Accurately weigh the amount of KH in the reaction flask (0.2-0.3 g, about 5.0-7.5 mmol) by the subtraction method.

[0045] (2) Preparation of initiator: inject 15-30ml of THF into the reaction bottle, place the reaction bottle in a constant temperature oil bath at 20°C, and inject dimethyl sulfoxide (DMSO) with KH and other substanc...

Embodiment 2

[0047] Example 2: MePEG-b-PDMAEMA-b-POFPMA and its preparation

[0048] (1) Preparation of KH: same as Example 1.

[0049] (2) Preparation of initiator: same as Example 1.

[0050] (3) Polymerization reaction: Move the reaction bottle into a constant temperature oil bath at 40°C and add the first monomer 2-(dimethylamino)ethyl methacrylate (DMAEMA) with a dry syringe to control the reaction between the first monomer and the initiator. The molar ratio of the agent is 30:1, and the first monomer DMAEMA monomer equivalent to 30 times the amount of the initiator is injected to carry out the polymerization reaction for 1~1.5h, and the molar ratio of the second monomer and the initiator is controlled to be 6:1, Use a dry syringe to add the second monomer methacrylic acid-(2,2,3,3,4,4,5,5-octafluoro)pentyl ester (OFPMA) equivalent to 6 times the amount of the initiator, and react 1~ 1.5h, and finally terminate the reaction with dry methanol. The reacted polymer is subjected to rot...

Embodiment 3

[0051] Example three: MePEG-b-PDMAEMA-b-POFPMA and its preparation

[0052] (1) Preparation of KH: same as Example 1.

[0053] (2) Preparation of initiator: same as Example 1.

[0054] (3) Polymerization reaction: Move the reaction bottle into a constant temperature oil bath at 40°C and add the first monomer 2-(dimethylamino)ethyl methacrylate (DMAEMA) with a dry syringe to control the reaction between the first monomer and the initiator. The molar ratio of the agent is 50:1, and the first monomer DMAEMA monomer equivalent to 50 times the amount of the initiator is injected to carry out the polymerization reaction for 1~1.5h, and the molar ratio of the second monomer and the initiator is controlled to be 6:1, Then add the second monomer methacrylic acid-(2,2,3,3,4,4,5,5-octafluoro)pentyl ester (OFPMA) equivalent to 6 times the amount of initiator with a dry syringe, and react 1 ~1.5h, and finally terminate the reaction with dry methanol. The reacted polymer is subjected to ...

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Abstract

An amphiphilic fluoride segmented copolymer and its production are disclosed. The procedure is carried out by oxygen anion initiation polymerizing, reacting polymer with hydroxyl terminal group with strong lye to obtain low-polymer oxygen anion, and reacting it with methyl-acrylic acid and methyl-acrylic fluoride ester separately as initiator to obtain final product. It has fast reactive speed, higher conversion rate and purity.

Description

technical field [0001] The present invention relates to a kind of copolymer with one or more unsaturated aliphatic group compounds, each unsaturated aliphatic group has only one carbon-carbon double bond, and only one is terminal with carboxylate; specifically relates to a A block copolymer composed of (alkyl-substituted amino) methacrylate and fluorine-containing methacrylate. Background technique [0002] Stimuli-responsive amphiphilic polymers are currently one of the hotspots in the field of polymer materials. Due to their special properties, they can respond to external stimuli (light, heat, electricity, magnetism, mechanical energy and other physical stimuli and pH value, salt concentration, etc.) , chemical substances and other chemical stimuli) change its molecular structure and physical properties, and involve the exchange and transformation of matter, energy, and information between it and the environment. At the same time, due to their amp...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F297/02
Inventor 倪沛红毛江许洁
Owner SUZHOU UNIV
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