Method for preparing high-saturation photon hypersphere by using membrane emulsification method
By adopting oil-in-water emulsion template and membrane emulsification method, the problems of low preparation efficiency and high production cost of photon superspheres in the prior art are solved, and efficient preparation of high saturation photon superspheres are achieved, and structural order is improved. and preparation efficiency.
Patent Information
- Application Number
- CN202411516364.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-29
- Publication Date
- 2025-02-14
AI Technical Summary
In the prior art, when preparing photon superspheres, the emulsion type and emulsification technology have problems such as low efficiency, poor mechanical stability and high production costs, which limits the application of superspheres.
Oil-in-water (O/W) emulsion template was used for evaporation self-assembly, and high-saturation photon superspheres were prepared by membrane emulsification. The method includes hydrophobic modification of SiO2 microspheres and black particles, and forming oil-in-water emulsion droplets in the SPG film emulsification device, which self-assemble and cure by heating.
It improves the structural order and preparation efficiency of the superball, reduces evaporation time, reduces production costs, and has a more environmentally friendly and energy-saving process.
Smart Images
Figure CN119425548A_ABST
Abstract
Description
Technical Field
[0001] The invention belongs to the technical field of structural color photon pigment preparation, and specifically relates to a method for preparing high-saturation photon hyperspheres by using a membrane emulsification method. Background Art
[0002] Structural color is a common color in nature. It is produced by interference, diffraction or other physical effects between light and special micro-nano structures inside materials, such as peacock feathers and butterfly wings. Compared with traditional pigment colors, structural colors have the advantages of low toxicity, environmental protection and not easy to fade. Existing synthetic structural color materials are mostly thin film materials. On the one hand, the preparation of thin film structural color materials is difficult to scale up, and the production cost is high, which limits their application in large-scale production. On the other hand, the two-dimensional planar structure limits its application scenarios and makes it difficult to meet the needs of different fields. Therefore, more and more research groups are focusing their research on spherical photonic band gap materials - photonic hyperspheres. Hyperspheres are micron-sized spheres composed of nanoparticles or nanopores. When the internal structure meets the Bragg condition, structural interference will occur, thus showing structural colors. As a new type of structural color material, hyperspheres have good dispersibility and can be made into structural color pigments. They are suitable for various printing and spraying technologies, which broadens the application scenarios of structural colors; their spherical geometric structure gives them low angle dependence and can be applied to wide-angle display scenes; in addition, the preparation method of hyperspheres is simple and fast, and large-scale production can be achieved with the help of SPG membrane emulsifiers. Therefore, photonic hyperspheres are ideal for preparing structural color pigments.
[0003] The most common method for preparing hyperspheres is to assemble colloidal particles "bottom-up" based on an emulsion template, but there are significant differences in the technical routes for different emulsion types. For traditional water-in-oil (W / O) emulsion templates, hyperspheres are often assembled by evaporation-induced crystallization. Yi et al. slowly removed water from the emulsion by heating and evaporation to shrink the droplets until a hypersphere was formed. The slow evaporation of water in the emulsion can rearrange the particles in the droplets to form a highly ordered stacking structure. Yang et al. have demonstrated that color-adjustable hyperspheres can be produced by controlling the evaporation rate, particle size, and volume fraction of the colloid particles. However, the water-in-oil (W / O) emulsion must disperse the colloidal particles into the aqueous phase, and the dispersion process is inefficient. The colloid particles are attracted to each other by weak van der Waals forces, and the mechanical stability is low. At the same time, the evaporation of water takes at least 12 hours. In addition, vortex stirring or microfluidics was often used for emulsification in the past. The former is more efficient, but the accuracy of controlling the size of emulsion droplets is poor; the latter can accurately control the size and distribution of emulsion droplets, but the efficiency is extremely low, the equipment cost is high, and the chip channels are prone to clogging and wear, making it difficult to scale up industrially. The shortcomings of the above emulsion system and emulsification technology limit the application of superspheres. Summary of the invention
[0004] In view of the above defects or improvement needs of the prior art, the present invention aims to prepare superspheres by evaporation self-assembly using an oil-in-water (O / W) emulsion template to improve the structural orderliness and preparation efficiency of the superspheres.
[0005] To achieve the above object, according to one aspect of the present invention, a method for preparing a high-saturation photon hypersphere by using a membrane emulsification method is provided, the method comprising the following steps:
[0006] S100: Monodisperse SiO2 microspheres were prepared by the Stober method and their surfaces were hydrophobically modified;
[0007] S200: hydrophobic modification of black particles;
[0008] S300: The modified SiO2 microspheres and black particles are mixed with a photocurable resin, a crosslinking agent, a photoinitiator, and ethyl acetate, and then ultrasonically dispersed until uniform, as a dispersed phase; a surfactant, water, and ethyl acetate are mixed and stirred until completely miscible, as a continuous phase;
[0009] S400: The dispersed phase is transferred to the SPG membrane emulsification device, and the nitrogen pressure is adjusted to allow the dispersed phase to pass through the SPG membrane pores to form water-in-oil emulsion droplets on the side of the continuously stirred continuous phase;
[0010] S500: After the emulsification is completed, the emulsion is heated to enable the SiO2 microspheres and the black particles to self-assemble and solidify to obtain the photon supersphere.
[0011] Furthermore, the hydrophobic modification of SiO2 microspheres specifically includes: modifying the hydroxyl groups on the surface of SiO2 microspheres using a silane coupling agent with an acrylate group.
[0012] Furthermore, the black particles include but are not limited to carbon black nanoparticles, natural or artificial melanin particles, and the hydrophobic modification of the black particles specifically includes: using Fenton's reagent to modify the surface of the black particles with hydroxyl groups, and then using a silane coupling agent with an acrylate group to further hydrophobically modify them.
[0013] Furthermore, the photocurable resin is an acrylate resin; the crosslinking agent includes but is not limited to trimethylolpropane triacrylate, trimethylolpropane trimethacrylate or ethylene glycol dimethacrylate; and the photoinitiator is 2-hydroxy-2-methylpropiophenone.
[0014] Furthermore, in the dispersed phase, the volume ratio of photocurable resin to ethyl acetate is 0.2-2, the added amount of modified SiO2 microspheres is 10%-90% of the volume of the photocurable resin, the added amount of modified black particles is 0.1%-0.5% of the mass of the modified SiO2 microspheres, the added amount of the crosslinker is 0.1% voL-1% voL of the photocurable resin, and the added amount of the photoinitiator is 1% voL-5% voL of the photocurable resin.
[0015] Furthermore, the surfactant includes Tween 20, Tween 40, Tween 60, Tween 80 or other Tween emulsifiers, polyoxyethylene oleate, polyoxyethylene sorbitol beeswax derivatives, tetraethylene glycol monolaurate, polyoxyethylene lauryl ether, F-108; the water is single-distilled water, double-distilled water, deionized water, purified water, high-purity water or ultrapure water.
[0016] Furthermore, in the continuous phase, the mass concentration of the surfactant after being dissolved in water is 1-10 g / L, and the amount of ethyl acetate added is 8% voL-14% voL of the continuous phase.
[0017] Furthermore, the nitrogen pressure is adjusted in the range of 0.001MPa to 0.005MPa in S400.
[0018] Furthermore, the heating temperature in S500 is 40° C. to 80° C., and the heating time is 0.5 hrs to 6 hrs.
[0019] Furthermore, in the oil-in-water emulsion droplets, the dispersed phase accounts for 1% vol. to 40% vol. of the continuous phase.
[0020] Compared with the prior art, the present invention can achieve the following beneficial effects:
[0021] The present invention uses ethyl acetate, a volatile organic oil phase, as a dispersed phase solvent, and uses an oil-in-water (O / W) emulsion template to perform evaporation self-assembly to prepare a supersphere. This method only requires a simple hydrophobic modification of the surface of the SiO2 microspheres to be achieved, and the emulsification process can be efficiently and accurately controlled by means of a membrane emulsification device. The presence of ethyl acetate in the oil phase significantly reduces the evaporation time compared to the traditional water-in-oil (W / O) emulsion assembly, and retains the isotropic assembly process, effectively improving the structural orderliness and preparation efficiency of the supersphere, and the process is more environmentally friendly and energy-saving. BRIEF DESCRIPTION OF THE DRAWINGS
[0022] Figure 1 This is a technical roadmap for preparing high-saturation photon hyperspheres using a membrane emulsification method in an embodiment of the present invention.
[0023] Figure 2This is a comparison chart of SiO2 microspheres and carbon black before and after hydrophobic modification in Example 1 of the present invention, wherein a is the SEM image of the SiO2 microspheres after modification; b is the dispersion of SiO2 microspheres in ethyl acetate before and after modification from left to right; c is the dispersion of carbon black in water and oil phases before and after modification.
[0024] Figure 3 The morphology of the photonic hypersphere prepared in Example 2 of the present invention, wherein a is a blue hypersphere photographed with an optical microscope after magnification 40 times; b is an image taken normally after the blue hypersphere dispersion is smeared on black cardboard and naturally dried; c is a SEM image of the entire blue hypersphere; d is the microscopic morphology displayed after enlarging the selected area of c.
[0025] Figure 4 This is a comparison diagram of photon hyperspheres with different carbon black concentrations prepared in Example 3 of the present invention, wherein a, b, d, and e are images of hyperspheres with carbon black concentrations from low to high taken under a dark field of an optical microscope; c is a reflection spectrum diagram characterized by a microspectrometer; and f is a photograph of hyperspheres dispersed in an ethanol solvent.
[0026] Figure 5 3. The figure is a comparison diagram of the photonic hypersphere assembled from SiO2 microspheres of different particle sizes in Example 4 of the present invention, wherein a, b, and c are images of the hypersphere assembled from SiO2 microspheres with particle sizes of 200nm, 240nm, and 280nm, respectively, taken under the dark field of an optical microscope; d is a photograph of the three hyperspheres dispersed in an ethanol solvent; e is a photograph of the ethanol dispersions of the three hyperspheres in d being smeared on black cardboard respectively and taken after natural air drying; and f is a reflectance spectrum characterized by a micro-spectrometer for the sample in Figure e. DETAILED DESCRIPTION
[0027] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.
[0028] like Figure 1 As shown, the present invention provides a method for preparing a high-saturation photon hypersphere by using a membrane emulsification method, the method comprising the following steps:
[0029] 1. A series of monodisperse SiO2 microspheres with different particle sizes were prepared by the Stober method and then hydrophobically modified. Specifically, the hydroxyl groups on the surface of the SiO2 microspheres were modified by using a silane coupling agent KH570 with an acrylate group.
[0030] Second, the surface of the black particles is modified with hydroxyl groups using Fenton's reagent, and then further hydrophobically modified using a silane coupling agent KH570 with an acrylate group. The black particles here can be carbon black nanoparticles or natural or artificial melanin particles, such as polydopamine.
[0031] 3. The modified SiO2 microspheres and black particles are mixed with photocurable resin, crosslinking agent, photoinitiator and ethyl acetate, and then dispersed by ultrasonic until uniform, as the dispersed phase; the surfactant, water and ethyl acetate are mixed and stirred until completely miscible, as the continuous phase.
[0032] Among them, the photocurable resin is an acrylate resin, such as methyl acrylate, ethyl acrylate, butyl acrylate, methyl methacrylate, 2-isooctyl acrylate, 2-isooctyl methacrylate, polyethylene glycol phenyl ether acrylate, etc.; the cross-linking agent includes but is not limited to trimethylolpropane triacrylate, trimethylolpropane trimethacrylate or ethylene glycol dimethacrylate; the photoinitiator is 2-hydroxy-2-methylpropiophenone.
[0033] In this step, the volume ratio of the photocurable resin to ethyl acetate is 0.2-2, the added amount of the modified SiO2 microspheres is 10%-90% of the volume of the photocurable resin, the added amount of the modified black particles is 0.1%-0.5% of the mass of the modified SiO2 microspheres, the added amount of the crosslinking agent is 0.1% voL-1% voL of the photocurable resin, and the added amount of the photoinitiator is 1% voL-5% voL of the photocurable resin.
[0034] 4. Mix the surfactant, water and ethyl acetate and stir at a stirring rate of 200-1000 rpm until they are completely miscible, which serves as the continuous phase.
[0035] Among them, the surfactants include Tween 20, Tween 40, Tween 60, Tween 80 or other Tween emulsifiers, polyoxyethylene oleate, polyoxyethylene sorbitol beeswax derivatives, tetraethylene glycol monolaurate, polyoxyethylene lauryl ether, At least one of F-108 (PEO-PPO-PEO); the water is single-distilled water, double-distilled water, deionized water, purified water, high-purity water or ultrapure water.
[0036] In this step, the mass concentration of the surfactant after being dissolved in water is 1-10 g / L, and the amount of ethyl acetate added is 8% voL-14% voL of the continuous phase.
[0037] 5. Take 1% voL to 40% voL of the dispersed phase of the continuous phase, transfer the dispersed phase to the liquid storage tank on the SPG membrane emulsification device, adjust the nitrogen pressure range to 0.001MPa to 0.005MPa, allow the dispersed phase to pass through the SPG membrane pores with a pore size of 20μm, and form water-in-oil O / W emulsion droplets on the side of the continuously stirred continuous phase.
[0038] 6. After emulsification, the emulsion is heated in an oil bath at 40°C to 80°C for 0.5 hrs to 6 hrs, and the modified SiO2 microspheres and black particles are induced to self-assemble by evaporation of the oil phase solvent ethyl acetate, and then cured by ultraviolet light to prepare a structurally stable high-saturation photon supersphere.
[0039] Example 1
[0040] In this embodiment, a series of SiO2 microspheres with different particle sizes are prepared, and the SiO2 microspheres and carbon black are hydrophobically modified for use.
[0041] The specific steps are as follows:
[0042] 1. The Stober method was used to prepare SiO2 microspheres with an average particle size of 200nm to 300nm.
[0043] 2. Use silane coupling agent KH570 with acrylate group to modify the hydroxyl groups on the surface of SiO2 microspheres.
[0044] 3. The surface of carbon black was modified with hydroxyl groups using Fenton reagent, and then further hydrophobicized using silane coupling agent KH570 with acrylate groups.
[0045] To verify the success of the hydrophobic modification of SiO2 microspheres and carbon black, we compared the dispersion of SiO2 nanospheres and carbon black in solvents before and after modification. First, SiO2 microspheres before and after modification were added to ethyl acetate solvent, ultrasonically treated, and left to stand for a period of time to compare the dispersion effects of the two. Figure 2 -b, the unmodified SiO2 microspheres still precipitate at the bottom of the glass bottle even after ultrasonic treatment, while the SiO2 microspheres modified with KH570 are well dispersed in the oil phase, with no precipitation at the bottom of the bottle, and no particles hanging on the wall when the glass bottle is shaken; thus, it is believed that the modification of the SiO2 microspheres is successful. For carbon black particles, we added deionized water and ethyl acetate to three centrifuge tubes. The two were difficult to mix and separated into layers. The density of ethyl acetate (ρ = 0.902 g / cm 3 ) is smaller than water and is in the upper layer. Unmodified carbon black, hydroxyl-modified carbon black and hydrophobically modified carbon black are added to three centrifuge tubes respectively. After shaking, stand and separate to obtain Figure 2 -c show the results. By comparison, the effect of hydrophobic modification is very good, and it is determined that the modification strategy is feasible.
[0046] Example 2
[0047] Select SiO2 microspheres with an average particle size of 200 nm from the modified SiO2 microspheres obtained in Example 1, and volatilize and self-assemble with modified carbon black to prepare high-saturation photon superspheres. The specific steps are as follows:
[0048] 1. In a mixed solution of butyl acrylate and ethyl acetate in a volume ratio of 1:1, add 10% by volume of butyl acrylate modified SiO2 microspheres, 0.1% by volume of butyl acrylate trimethylolpropane trimethacrylate, 5% by volume of butyl acrylate 2-hydroxy 2-methylpropiophenone, and 0.1% by volume of modified carbon black of the modified SiO2 microspheres, and disperse them uniformly by ultrasonication as the dispersed phase.
[0049] 2. Add surfactant Tween 60 into deionized water to obtain a solution with a mass concentration of 3 g / L, and add 10% vol. ethyl acetate, and stir at a stirring rate of 500-1000 rpm until they are completely miscible, as the continuous phase.
[0050] 3. Take 2% voL of the dispersed phase of the continuous phase and transfer the dispersed phase to the liquid storage tank on the SPG membrane emulsification device. Adjust the nitrogen pressure range to 0.001 MPa, so that the dispersed phase passes through the SPG membrane pores with a pore size of 20 μm, and forms water-in-oil O / W emulsion droplets on the side of the continuously stirred continuous phase.
[0051] 4. After emulsification, the emulsion was heated in an oil bath at 70°C for 3 h. The modified SiO2 microspheres and black particles were induced to self-assemble by evaporation of the oil phase solvent ethyl acetate, and then cured by ultraviolet light to prepare a structurally stable high-saturation photon supersphere.
[0052] The morphology of the superspheres self-assembled by SiO2 microspheres with an average particle size of 200 nm and carbon black volatilization is shown in Figure 3 As shown. The blue hypersphere image taken from an optical microscope after 40 times magnification ( Figure 3 As can be seen in a), the supersphere appears bright blue. SEM was used to further characterize its surface morphology ( Figure 3 c, d), the SiO2 microspheres on the surface of the hypersphere are arranged regularly, forming a symmetry plane similar to FCC.
[0053] Example 3
[0054] In order to explore the effect of carbon black addition on the color of the photon hypersphere of this system, four groups of photon hyperspheres with different carbon black concentrations were prepared using the modified SiO2 microspheres and carbon black obtained in Example 1.
[0055] First, in a mixed solution of butyl acrylate and ethyl acetate in a volume ratio of 1:1, 10% by volume of butyl acrylate modified SiO2 microspheres, 0.1% by volume of butyl acrylate trimethylolpropane trimethacrylate, and 5% by volume of butyl acrylate 2-hydroxy 2-methylpropiophenone were added. Then, the above solution was divided into four parts, and 0%, 0.1%, 0.3%, and 0.5% by mass of the modified SiO2 microspheres were added to each solution, respectively, and ultrasonic dispersion was performed until uniform, to obtain four dispersed phases with different carbon black concentrations. Other conditions were the same as in Example 2, and finally four groups of photon hyperspheres with different carbon black concentrations were obtained.
[0056] like Figure 4 As shown in the optical microscope image ( Figure 4 It can be seen from a, b, d, and e) that the supersphere containing a small amount of carbon black is relatively pure and shows a bright, highly saturated blue color; as the concentration of carbon black increases, the phase separation trend of carbon black in the supersphere increases. When the concentration of carbon black is too high, carbon black aggregates can be clearly seen and the color is relatively dull. Since carbon black phase separation will destroy the quasi-ordered stacking structure of SiO2 microspheres, the saturation of the structural color will decrease. Therefore, in this system, the amount of carbon black added should not be too high. The reflectance spectrum characterized by the microspectrometer ( Figure 4 c) reveals that as the concentration of carbon black increases, the overall reflectivity of the hypersphere gradually decreases, confirming the absorption effect of carbon black. Figure 4 As shown in figure f, the hyperspheres are dispersed in an ethanol solvent. Due to the change in the refractive index of the medium, the color undergoes a red shift. From left to right, as the concentration of carbon black increases, the color saturation of the dispersed system gradually increases.
[0057] Example 4
[0058] The modified SiO2 microspheres with average particle sizes of 200 nm, 240 nm, and 280 nm were selected from the modified SiO2 microspheres obtained in Example 1, and the modified carbon black was volatilized and self-assembled to prepare high-saturation photon superspheres. The specific steps were the same as in Example 2, and finally photon superspheres assembled from SiO2 microspheres with particle sizes of 200 nm, 240 nm, and 280 nm were obtained.
[0059] Comparison of photon superspheres assembled from SiO2 microspheres with different particle sizes Figure 5As shown. Under an optical microscope, as the size of SiO2 particles increases, the color of the hypersphere gradually redshifts, showing bright blue, yellow-green, and pink, respectively, which is consistent with the law described by the Bragg diffraction formula. We found that when the hypersphere is dispersed in an ethanol solvent, the color will undergo a certain degree of redshift. In particular, the hypersphere composed of 240nm SiO2 microspheres changes from yellow-green to orange-red. Using a microspectrometer to characterize the reflectance spectra of the three hyperspheres in the air medium, it is confirmed that the main peak wavelength of the yellow-green hypersphere is at 560nm; the main peak wavelength of the pink hypersphere is at 650nm. In theory, this wavelength of light should appear red in our eyes, but it also has a strong signal secondary peak at 385nm (purple) (the secondary peaks of blue and green hyperspheres should be in the ultraviolet region), and the two colors of light are combined to form pink. Past studies have shown that the appearance of secondary peaks is caused by different diffraction orders in Bragg conditions.
[0060] The above-mentioned embodiments only express the implementation methods of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the patent of the present invention. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be based on the attached claims.
Claims
1. A method for preparing a high-saturation photon hypersphere by membrane emulsification, characterized in that: The method comprises the following steps: S100: Monodisperse SiO2 microspheres were prepared by the Stober method and their surfaces were hydrophobically modified; S200: hydrophobic modification of black particles; S300: The modified SiO2 microspheres and black particles are mixed with a photocurable resin, a crosslinking agent, a photoinitiator, and ethyl acetate, and then ultrasonically dispersed until uniform, as a dispersed phase; a surfactant, water, and ethyl acetate are mixed and stirred until completely miscible, as a continuous phase; S400: The dispersed phase is transferred to the SPG membrane emulsification device, and the nitrogen pressure is adjusted to allow the dispersed phase to pass through the SPG membrane pores to form water-in-oil emulsion droplets on the side of the continuously stirred continuous phase; S500: After the emulsification is completed, the emulsion is heated to enable the SiO2 microspheres and the black particles to self-assemble and solidify to obtain the photon supersphere.
2. The method for preparing a high-saturation photon hypersphere by membrane emulsification method according to claim 1, characterized in that: The hydrophobic modification of SiO2 microspheres specifically includes: modifying the hydroxyl groups on the surface of SiO2 microspheres using a silane coupling agent with an acrylate group.
3. The method for preparing high-saturation photon hyperspheres by membrane emulsification method according to claim 1, characterized in that: The black particles include but are not limited to carbon black nanoparticles, natural or artificial melanin particles, and the hydrophobic modification of the black particles specifically includes: using Fenton's reagent to modify the surface of the black particles with hydroxyl groups, and then using a silane coupling agent with an acrylate group to further hydrophobically modify them.
4. The method for preparing high-saturation photon hyperspheres by membrane emulsification method according to claim 1, characterized in that: The photocurable resin is an acrylate resin; the crosslinking agent includes but is not limited to trimethylolpropane triacrylate, trimethylolpropane trimethacrylate or ethylene glycol dimethacrylate; and the photoinitiator is 2-hydroxy-2-methylpropiophenone.
5. The method for preparing high-saturation photon hyperspheres by membrane emulsification method according to claim 1, characterized in that: In the dispersed phase, the volume ratio of the photocurable resin to ethyl acetate is 0.2-2, the added amount of the modified SiO2 microspheres is 10%-90% of the volume of the photocurable resin, the added amount of the modified black particles is 0.1%-0.5% of the mass of the modified SiO2 microspheres, the added amount of the crosslinking agent is 0.1% voL-1% voL of the photocurable resin, and the added amount of the photoinitiator is 1% voL-5% voL of the photocurable resin.
6. The method for preparing high-saturation photon hyperspheres by membrane emulsification method according to claim 1, characterized in that: The surfactant includes Tween 20, Tween 40, Tween 60, Tween 80 or other Tween emulsifiers, polyoxyethylene oleate, polyoxyethylene sorbitol beeswax derivatives, tetraethylene glycol monolaurate, polyoxyethylene lauryl ether, F-108; the water is single-distilled water, double-distilled water, deionized water, purified water, high-purity water or ultrapure water.
7. The method for preparing high-saturation photon hyperspheres by membrane emulsification method according to claim 1, characterized in that: In the continuous phase, the mass concentration of the surfactant after being dissolved in water is 1-10 g / L, and the added amount of ethyl acetate is 8% voL-14% voL of the continuous phase.
8. The method for preparing high-saturation photon hyperspheres by membrane emulsification method according to claim 1, characterized in that: The nitrogen pressure is adjusted in the range of 0.001MPa to 0.005MPa in S400.
9. The method for preparing high-saturation photon hyperspheres by membrane emulsification method according to claim 1, characterized in that: The heating temperature in S500 is 40° C. to 80° C., and the heating time is 0.5 hrs to 6 hrs.
10. The method for preparing high-saturation photon hyperspheres by membrane emulsification method according to claim 1, characterized in that: In the oil-in-water emulsion droplets, the dispersed phase accounts for 1% vol. to 40% vol. of the continuous phase.