Preparation method of monodisperse hydrophobic poly(trifluoroethyl methacrylate) colloid emulsion

A technology of polytrifluoroethyl methacrylate and trifluoroethyl methacrylate is applied in the field of preparation of hydrophobic colloidal photonic crystal emulsion, and can solve the problem of inability to build long-range ordered stacking array structure, defects, unfavorable assembly and high performance. Photonic crystal materials and other problems, to achieve the effect of simple and effective preparation method and low monodispersity index

Active Publication Date: 2018-11-16
NANUS NEW MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, traditional colloidal photonic crystal materials, such as inorganic silica microspheres, organic polystyrene and polymethyl methacrylate colloidal particles, etc., are often not conducive to the assembly of colloidal crystal materials with bright structural colors and high performance. photonic crystal material
The essence of these materials is that these materials lack sufficient hydrophobic physical properties, causing local defects to be easily generated inside the colloidal particles during the assembly process, and it is impossible to construct an array structure with long-range ordered stacking arrangement.

Method used

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  • Preparation method of monodisperse hydrophobic poly(trifluoroethyl methacrylate) colloid emulsion
  • Preparation method of monodisperse hydrophobic poly(trifluoroethyl methacrylate) colloid emulsion
  • Preparation method of monodisperse hydrophobic poly(trifluoroethyl methacrylate) colloid emulsion

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Weigh 0.027g of initiator and 100mL of deionized water in a 250mL four-necked bottle with a balance, then add 4.5g of trifluoroethyl methacrylate monomer after washing and refining with 5% potassium hydroxide aqueous solution and pass into a stable of nitrogen. Stir mechanically at 25°C at a speed of 190rmp for 20min, then heat up to 70°C to initiate polymerization. After the reaction is finished, cool to room temperature, and then filter with a 200-mesh gauze to remove a small amount of gel to obtain a monodisperse colloidal emulsion of polytrifluoroethyl methacrylate. according to figure 1 The particle size distribution diagram shows that the polytrifluoroethyl methacrylate colloid particle size is about 192nm, and the monodispersity index of the emulsion is only 3.9%, indicating that there is excellent monodispersity performance, and the polytrifluoroethyl methacrylate The static contact angle of the colloidal film is 125°, indicating that it has strong hydrophobic...

Embodiment 2

[0030] Weigh the deionized water of 0.055g initiator 100mL in the 250mL four-necked bottle with a balance, then add 5.5g of trifluoroethyl methacrylate monomer after washing and refining with 5% aqueous sodium hydroxide solution and pass into a stable Nitrogen, at 25°C mechanically stirred at 210rmp for 30min, then heated to 80°C to initiate polymerization. After the reaction is finished, cool to room temperature, and then filter with a 200-mesh gauze to remove a small amount of gel to obtain a monodisperse colloidal emulsion of polytrifluoroethyl methacrylate. figure 2 It is the SEM image of polytrifluoroethyl methacrylate, the particle size is about 214nm, and the monodispersity index of the emulsion is 4.2%. The structure of polytrifluoroethyl methacrylate colloidal microspheres arranged closely shows that it has excellent Monodisperse performance, the measured static contact angle of the colloidal film of polytrifluoroethyl methacrylate is 126°, indicating that it has str...

Embodiment 3

[0032] Weigh 0.05g of initiator and 100mL of deionized water in a 250mL four-necked bottle with a balance, then add 8.0g of trifluoroethyl methacrylate monomer after washing and refining with 10% aqueous sodium hydroxide solution and feed into a stable Nitrogen, mechanically stirred at 25°C at a speed of 230rmp for 50min, and then heated to 90°C to initiate polymerization. After the reaction is finished, cool to room temperature, and then filter with a 200-mesh gauze to remove a small amount of gel to obtain a monodisperse colloidal emulsion of polytrifluoroethyl methacrylate. image 3 It is the SEM image of polytrifluoroethyl methacrylate, the particle size is about 252nm, and the monodispersity index of the emulsion is 3.8%. The closely packed structure of polytrifluoroethyl methacrylate colloidal particles shows that it has excellent monodispersity Dispersion performance, the measured static contact angle of the colloidal film of polytrifluoroethyl methacrylate is 126°, ind...

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Abstract

The invention relates to a preparation method of a monodisperse hydrophobic poly(trifluoroethyl methacrylate) colloid emulsion. The method concretely comprises the following steps: washing a trifluoroethyl methacrylate monomer with an alkali solution, and carrying out reduced pressure distillation to obtain refined trifluoroethyl methacrylate; adding an initiator and deionized water into a reactor, and stirring the initiator and deionized water to form a homogeneous system; adding the refined trifluoroethyl methacrylate monomer into the reactor, protecting the obtained reaction system in a protection atmosphere, and uniformly stirring the reaction system by a mechanical stirring device; heating the reactor to carry out a polymerization reaction; and filtering the obtained white product bya gauze to remove gel generated by self-polymerization in order to obtain the flexible monodisperse hydrophobic poly(trifluoroethyl methacrylate) colloid emulsion. Colloid particles prepared through the method have the characteristics of variable colloid size and low monodisperse index. The method has the advantages of fast polymerization rate, strong mixing and heat transferring effect, and no pollution on the surface of the colloid particles.

Description

technical field [0001] The invention relates to a method for preparing a hydrophobic colloidal photonic crystal emulsion, in particular to a method for preparing a monodisperse hydrophobic polytrifluoroethyl methacrylate colloidal emulsion. Background technique [0002] Colloidal photonic crystals are assembled by monodisperse colloidal latex particles under certain conditions through external driving forces such as surface tension, capillary force, and electrostatic force to form materials that are tightly packed and arranged in an orderly manner. The fields of communication and optics hold great promise. However, traditional colloidal photonic crystal materials, such as inorganic silica microspheres, organic polystyrene and polymethyl methacrylate colloidal particles, etc., directly synthesized colloidal crystal materials are often not conducive to the formation of high-performance materials with bright structural colors. Photonic crystal materials. The essence of these ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F120/24C08F6/16
CPCC08F6/16C08F120/24C08L33/16
Inventor 陈苏洪日吴兴江王彩凤
Owner NANUS NEW MATERIAL
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