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Method for preparing shape-adjustable polyion liquid-based anisotropic composite particles based on seed polymerization method

A technology of polyionic liquid and ionic liquid, applied in the field of preparation of polyionic liquid-based anisotropic composite particles, can solve problems such as convenient regulation, limitation of particle application range, inability to realize particle morphology, etc. effect of regulation

Active Publication Date: 2021-05-28
LIAONING UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the current method of synthesizing composite particles containing polyionic liquids cannot achieve convenient control of particle morphology, which will limit the application range of particles.
[0004] However, the above methods for preparing polyionic liquid-based composite particles still have certain defects, for example, none of them can achieve convenient control of particle morphology, which leads to a serious limitation of the potential application range of particles.

Method used

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  • Method for preparing shape-adjustable polyion liquid-based anisotropic composite particles based on seed polymerization method
  • Method for preparing shape-adjustable polyion liquid-based anisotropic composite particles based on seed polymerization method
  • Method for preparing shape-adjustable polyion liquid-based anisotropic composite particles based on seed polymerization method

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] The preparation of embodiment 1 ionic liquid monomer

[0027] The synthetic reaction formula of ionic liquid monomer is as follows:

[0028]

[0029] Preparation method: uniformly mix 2.0 g of [MTMA]Cl aqueous solution with a concentration of 75% and 2.3 g of Li[TFSA], stir at room temperature for 12 hours, anion exchange reaction occurs, and the obtained reaction solution is divided into upper and lower layers, and the lower layer of ionic liquid is removed Add a small amount of deionized water to it and continue to stir and wash it. After repeated five times, put it in a vacuum drying oven and dry it at 50 °C for 24 hours to obtain a colorless and viscous ionic liquid monomer ([MTMA][TFSA]).

[0030] Such as figure 1 as shown, figure 1 Middle 2 is the infrared absorption spectrum of the ionic liquid monomer ([MTMA][TFSA]). It can be seen from the infrared absorption spectrum of the synthesized ionic liquid monomer that the 1728cm -1 is the stretching vibration ...

Embodiment 2

[0031] The preparation of embodiment 2 PMMA polymer seed ball

[0032] Methods as below:

[0033] Purification of MMA: Methyl methacrylate (MMA) monomer is slowly passed through Al 2 o 3 The filter column, and the colorless and transparent MMA monomer obtained by filtering off the polymerization inhibitor at the outlet of the filter column lower end is collected with a brown sample bottle for use.

[0034] Weigh 0.1g of PVP, disperse it in 60mL of deionized water, add 5.0g of purified MMA monomer to it, after ultrasonic emulsification is complete, transfer the system to an oil bath and start to heat up. During the heating process, a total of 10 mL of KPS aqueous solution (1 wt%) was added twice at 50° C. and 85° C. respectively, and finally stabilized at 100° C. for 2 hours to complete the polymerization process. After the reaction, centrifuge to take the lower layer product, add 20mL water to it and ultrasonically disperse evenly, then centrifuge, pour out the upper layer so...

Embodiment 3

[0037] The preparation of embodiment 3 PMMA polymer seed balls

[0038] Methods as below:

[0039] Purification of MMA: Methyl methacrylate (MMA) monomer is slowly passed through Al 2 o 3 The filter column, and the colorless and transparent MMA monomer obtained by filtering off the polymerization inhibitor at the outlet of the filter column lower end is collected with a brown sample bottle for use.

[0040] Take by weighing 0.3g PVP respectively, then join respectively in the reaction solvent that the total amount that methanol and deionized water form is 60mL, wherein the volume ratio of methanol and deionized water is respectively 1:1 (methanol / deionized water 30.0mL / 30.0mL), 5:3 (methanol / deionized water 37.5mL / 22.5mL) and 7:3 (methanol / deionized water 42.0mL / 18.0mL), ultrasonically disperse it completely. 3.0 g of purified MMA monomer and 30.0 mg of AIBN were added thereto. The whole system was subjected to three cycles of vacuum pumping and nitrogen blowing, and reac...

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Abstract

The invention discloses a method for preparing shape-adjustable polyion liquid-based anisotropic composite particles based on a seed polymerization method. The method comprises the following steps: preparing PMMA polymer seed balls in a reaction solvent through a polymerization method in the presence of an initiator and an emulsifier by taking purified MMA as a polymerization monomer; and dropwise adding an ionic liquid monomer into a PMMA polymer seed ball dispersion liquid, dropwise adding an initiator potassium persulfate aqueous solution after the ionic liquid monomer is fully swelled into the seed balls, uniformly stirring, heating to 70 DEG C, and reacting for 24 hours; According to the method, the morphology of the PMMA-PIL anisotropic composite particles is conveniently regulated and controlled through the simple and convenient method, and the prepared particles with different morphologies can be applied differently according to conditions. The PIL is a functional polymer and can be simply modified through methods such as anion exchange, so that the PIL also has a very positive effect on expanding the application range of the particles.

Description

technical field [0001] The invention relates to a method for preparing polyionic liquid-based anisotropic composite particles with adjustable morphology, in particular to a new method for regulating the morphology of polymer composite particles. Background technique [0002] Anisotropic composite particles refer to particles with multiple different properties. They are special functional particles. They have great application prospects in many aspects such as particle emulsifiers, biological carriers, interface catalysis, self-assembly systems and electronic displays. , which has aroused great research interest. With the continuous advancement of scientific research technology, researchers have developed many methods for preparing anisotropic composite particles. However, among many preparation methods, the seed polymerization method is undoubtedly the most basic method for the synthesis of anisotropic composite particles due to its advantages of simple operation, controlla...

Claims

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Application Information

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IPC IPC(8): C08F265/06C08F220/34
CPCC08F265/06C08F220/34
Inventor 孟庆博李媛媛宋溪明曹德洲于戏波
Owner LIAONING UNIVERSITY
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