Assembly of red blood cell-like colloid particles and spherical colloid particles as well as preparation method and application of assembly

A technology of colloidal particles and red blood cells, applied in coatings, reflective/signal paints, multi-color effect paints, etc. The problem of uneven concentration of emptying reagents, etc., achieves the effect of good application value, high repeatability and convenient operation.

Active Publication Date: 2018-04-24
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the non-spherical particles prepared by Cheng Zhifeng et al. have multiple grooves (1 to 4), which provide multiple sites for assembly. Due to the influence of steric hindrance, it is impossible to assemble multiple particles at the same time; For each particle, the different assembly sites lead to a variety of inconsistent assembly forms; especially the technology did not recognize the matching between the inner diameter (600nm) of the prepared groove and the inner diameter (1100nm) of the spherical particle, and the spherical particle cannot be embedded The inside of the groove; this technology also does not recognize the mode of action of the evacuation reagent. PEO is directly added dropwise on the glass slide, resulting in uneven concentration of the evacuation reagent. This technology hardly obtains a stable assembly of non-spherical particles and spherical particles.

Method used

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  • Assembly of red blood cell-like colloid particles and spherical colloid particles as well as preparation method and application of assembly
  • Assembly of red blood cell-like colloid particles and spherical colloid particles as well as preparation method and application of assembly
  • Assembly of red blood cell-like colloid particles and spherical colloid particles as well as preparation method and application of assembly

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0051] A kind of spherical polystyrene (PS) particle, its preparation process is as follows:

[0052] In terms of parts by mass, 100 parts of styrene (St), 2 parts of ammonium persulfate (APS), 10 parts of sodium dodecyl sulfate (SDS), and 100 parts of deionized water were added to a 250mL four-neck flask, and 300r Stir at 1 / min to form a homogeneous solution, pass nitrogen gas for 30 minutes to remove oxygen in the system, raise the temperature to 60°C to initiate the polymerization reaction, and react at constant temperature for 4 hours. After the reaction, the product was centrifuged and washed repeatedly with absolute ethanol to remove unreacted monomers and stabilizers, and then freeze-dried for 12 hours to obtain spherical PS particles.

[0053] Using a scanning electron microscope model FE-SEM, ZEISS ULTRA 55 to magnify the prepared spherical particles 10000 times to characterize, figure 1 It is a scanning electron microscope picture of the observed spherical PS partic...

Embodiment 2

[0066] A kind of spherical polymethacrylic acid particle, its preparation process is as follows:

[0067] In parts by mass, 200 parts of methacrylic acid (MAA), 10 parts of potassium persulfate, 50 parts of polyvinylpyrrolidone (PVP), 500 parts of absolute ethanol and 100 parts of deionized water were added to a 250 mL four-necked flask, Stir at 100r / min to form a homogeneous solution, pass nitrogen gas for 60min to remove oxygen in the system, raise the temperature to 80°C to initiate the polymerization reaction, and react at constant temperature for 8h. After the reaction, the product was centrifuged and washed repeatedly with absolute ethanol and deionized water to remove unreacted monomers and stabilizers, and then freeze-dried for 24 hours to obtain spherical methacrylic acid particles.

[0068] The obtained Key particles are spherical methacrylic acid particles with a smooth surface, good monodispersity, relatively uniform size, and a particle diameter of 900 nm.

[006...

Embodiment 3

[0078] A kind of spherical polyacrylic acid (AA) particle, its preparation process is as follows:,

[0079] In parts by mass, 150 parts of acrylic acid (AA), 6 parts of azobisisobutyronitrile (AIBN), 30 parts of polyvinylpyrrolidone (PVP), 300 parts of absolute ethanol and 200 parts of deionized water were added to 250 mL of four In the flask, stir at 200r / min to form a homogeneous solution, pass nitrogen gas for 45min to remove the oxygen in the system, raise the temperature to 70°C to initiate the polymerization reaction, and react at constant temperature for 6h. After the reaction, the product was centrifuged and washed repeatedly with absolute ethanol and deionized water to remove unreacted monomers and stabilizers, and then freeze-dried for 18 hours to obtain spherical polyacrylic acid particles.

[0080] The obtained Key particles are spherical PS particles, the spherical PS particles have a smooth surface, good monodispersity, and the diameter of the spherical particles...

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Abstract

The invention discloses an assembly of red blood cell-like colloid particles and spherical colloid particles as well as a preparation method and application of the assembly. The assembly is formed byembedding the spherical colloid particles in grooves of the red blood cell-like particles and assembling the spherical colloid particles and the red blood cell-like particles together; the particle size of the spherical colloid particles is 500 to 1300 nm; the particle size of the red blood cell-like particles is 1 to 5 mu m, the grooves are semispherical, and the diameter of the grooves is 600 to1500 nm; the particle size of the spherical colloid particles is 80 to 100 percent of the diameter of the grooves of the red blood cell-like particles. According to the assembly disclosed by the invention, high-compatibility self-assembly of the red blood cell-like particles and the spherical colloid particles is successfully realized, an assembly effect is increased to a large extent, and an excellent photonic crystal iridescence effect is expressed when the assembly is applied to a photonic crystal waterborne coating material; after the size and the structure of the assembly are regulated and controlled, more gorgeous color can also be obtained, and the assembly have great potential application value in waterborne coating materials.

Description

technical field [0001] The invention relates to the technical field of self-assembly of polymer latex particles, in particular to the self-assembly of non-spherical polymer latex particles and spherical polymer latex particles, in particular to red blood cell-like colloidal particles and spherical colloidal particle assemblies and their preparation methods and applications . Background technique [0002] High-performance structural materials are an important material basis for supporting the fields of aerospace, transportation, optoelectronic information, energy and power, and major national infrastructure projects. It is currently one of the most competitive fields of high-tech new materials in the world. Polymer colloid particles, as basic functional particles, are widely used in the construction of new structural materials. Traditional polymer colloid particles refer to polymer aggregates with diameters between nanometers and micrometers and spherical shapes. Compared w...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D133/04C09D5/29C09D5/33C09D7/65C08G18/63C08F112/08C08F120/06C08F212/08C08F220/06C08F220/14C08F2/10C08F2/26C08F291/12C08F257/02C08F212/36
Inventor 张心亚宋刘俊杜小林
Owner SOUTH CHINA UNIV OF TECH
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