CN111100553B - Slow-release/self-cleaning bifunctional alcohol-soluble protein-based hybrid microcapsule coating material and preparation method thereof - Google Patents
Slow-release/self-cleaning bifunctional alcohol-soluble protein-based hybrid microcapsule coating material and preparation method thereof Download PDFInfo
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- CN111100553B CN111100553B CN201911272721.7A CN201911272721A CN111100553B CN 111100553 B CN111100553 B CN 111100553B CN 201911272721 A CN201911272721 A CN 201911272721A CN 111100553 B CN111100553 B CN 111100553B
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D189/00—Coating compositions based on proteins; Coating compositions based on derivatives thereof
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J13/00—Colloid chemistry, e.g. the production of colloidal materials or their solutions, not otherwise provided for; Making microcapsules or microballoons
- B01J13/02—Making microcapsules or microballoons
- B01J13/06—Making microcapsules or microballoons by phase separation
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/16—Antifouling paints; Underwater paints
- C09D5/1606—Antifouling paints; Underwater paints characterised by the anti-fouling agent
- C09D5/1612—Non-macromolecular compounds
- C09D5/1618—Non-macromolecular compounds inorganic
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2237—Oxides; Hydroxides of metals of titanium
- C08K2003/2241—Titanium dioxide
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/011—Nanostructured additives
Abstract
The invention relates to a slow-release/self-cleaning bifunctional alcohol soluble protein-based hybrid microcapsule coating material and a preparation method thereof, which comprises the steps of dissolving alcohol soluble protein into an ethanol water solution, dropwise adding a mixed solution of a hydrophobic substance, a surfactant and tetrahydrofuran into the alcohol soluble protein solution, and removing an organic solvent in a system to obtain alcohol soluble protein microcapsule emulsion coated with the hydrophobic substance; then adding TiO2And dripping the mixed solution of the precursor and tetrahydrofuran into the microcapsule emulsion coated with the hydrophobic substance, and drying after reaction to obtain the prolamin-based hybrid microcapsule with slow release/self-cleaning double functions. The microcapsule coating material prepared by the invention has the characteristics of good stability, high loading rate, good slow release, excellent photocatalysis and antibacterial performance and the like, and has wide application prospect in the industries of medical drugs, food packaging, leather textile and the like.
Description
Technical Field
The invention belongs to the technical field of coating materials, and particularly relates to a slow-release/self-cleaning bifunctional alcohol-soluble protein-based hybrid microcapsule coating material and a preparation method thereof.
Background
The alcohol soluble protein has the advantages of low price, no toxicity, no pollution, controllable release of core materials and the like, contains partial sulfur-containing amino acid, enables protein molecules to have stronger disulfide bonds and hydrophobic bonds to be connected, thereby endowing the protein molecules with strong lipophilicity and solubility, can be dissolved in alcohol solution with certain concentration, has good film forming property, and can form microcapsules through self-assembly. In addition, the alcohol soluble protein also has strong oxygen resistance and adhesiveness, so that the alcohol soluble protein can be used as an adhesive and the like in the fields of chemical engineering and the like. The alcohol soluble protein is used as carrier to wrap nutrient substances, medicines, essences and the like, and can be widely applied to the industries of food, medicine, leather, textile and the like. Based on the special structure and physicochemical properties, the preparation of the prolamin particles can be carried out by various methods to embed nutrient substances, such as grease, polyphenol, probiotics, active peptide and the like (Paliwal R, Palakurthi S. Zein Controlled drug delivery and tissue engineering [ J ]. Journal of Controlled Release, 2014, 189 (2): 108-122).
In recent years, various hydrophobic functional substances have been widely used in the fields of textiles, paints, foods and the like, for example, Plant essential oils extracted from plants such as eugenol, mint and jasmine have the effects of flavoring, antibiosis, preservation, disinsection, antipyresis, cooling, antioxidation and anti-aging, and are attracting attention (Cowan, M.M. Plant products as antimicrobial agents Clinical Microbiology Reviews 1999, 12, (4): 564-. However, most hydrophobic functional substances have the characteristics of easy volatilization, poor thermal stability, extremely difficult water solubility and the like, so that the exertion of the efficacy is limited. The research finds that: the active hydrophobic component can reduce the contact with the outside through embedding treatment, thereby achieving the purposes of enhancing the solubility and the stability of the active hydrophobic component and realizing the controllable release. Among many encapsulation systems, microcapsules are one of the most important forms. Meanwhile, with the improvement of living standard of people, the attention of consumers to safe and sanitary life style is increasing, and especially new challenges are provided to living goods. Taking the clothes as an example, dirt and grease are easy to corrode the surface of the clothes, which brings inconvenience to wearing; meanwhile, a suitable environment is provided for the growth of bacteria and fungi, and the growth of microorganisms can cause the disease deterioration and even body infection, so that coating materials with the self-cleaning function are gradually concerned by people.
The self-cleaning coating is capable of enabling dirt or dust particles on the surface of a base material to automatically fall off under the action of external force such as gravity, rainwater, wind power and the like or to be removed through photocatalytic degradation, and has the advantages of water saving, energy saving, environmental protection and the like. Of the super-hydrophilic self-cleaning coatings, most typically based on TiO2The coating material of (1). The coating material mainly depends on stronger hydrophilicity, water drops are completely spread to form a water film, and under the action of certain photocatalysis or water layers, dirt is chemically degraded to achieve the purpose of cleaning. This is mainly due to the photocatalytic effect of TiO2Can degrade organic matters and promote the dirt to be separated from the base material, thereby achieving the effect of easily washing and automatically cleaning the surface.
Disclosure of Invention
The invention aims to provide a sustained/self-release preparationThe clean double-function alcohol soluble protein-based hybrid microcapsule coating material and the preparation method thereof utilize the advantages of unique solubility, good self-assembly property, wide source, low price and the like of alcohol soluble protein and introduce nano TiO with photocatalysis self-cleaning function2And preparing the slow-release/self-cleaning bifunctional alcohol-soluble protein-based hybrid microcapsule coating material.
The technical scheme adopted by the invention is as follows:
a preparation method of a slow-release/self-cleaning bifunctional alcohol-soluble protein-based hybrid microcapsule coating material comprises the following steps:
step one, preparing a prolamin solution:
mixing 0.74-1.16 parts by mass of prolamin and 85.50-95.50 parts by mass of 75-90% ethanol aqueous solution, adding into a three-neck flask, continuously stirring by using a stirrer, adjusting the pH to 6.5-9.5, heating in a water bath to 25-60 ℃, and then keeping the temperature, stirring and reacting for 0.5-3.0 h to obtain a prolamin solution;
step two, preparing a hydrophobic substance-coated prolamin mixed solution:
respectively taking 0.11-1.63 parts by mass of hydrophobic substance, 0.20-1.54 parts by mass of surfactant and 3.50-9.00 parts by mass of tetrahydrofuran, mixing at 25-60 ℃, stirring for 0.5-3.0 hours on a stirrer to obtain a mixed solution in which the hydrophobic substance and the surfactant are dissolved, dropwise adding the mixed solution into the alcohol soluble protein solution obtained in the step one, and carrying out heat preservation reaction for 6-24 hours to obtain an alcohol soluble protein mixed solution coated with the hydrophobic substance;
step three, preparing alcohol soluble protein-based nano TiO coated with hydrophobic substance2Compounding microcapsules:
taking 3.50-9.00 parts by mass of tetrahydrofuran and 0.15-1.60 parts by mass of TiO respectively2Mixing the precursors at 25-60 ℃, stirring for 0.5-3.0 h on a stirrer to obtain a mixed solution, dropwise adding the mixed solution into the hydrophobic substance-coated prolamin mixed solution, reacting for 4.0-6.0 h under heat preservation, cooling to normal temperature at room temperature, and drying the mixed solution to obtain the hydrophobic substance-coated prolamin-based nano TiO2Composite microcapsules, i.e. slow-release/self-cleaning bifunctional alcohol-soluble eggsWhite-based hybrid microcapsules.
In the first step, the prolamin is one of zein, gliadin and potato prolamin.
In the second step, the hydrophobic substances are alkane, oil and fat.
In the second step, the surfactant is one or a mixture of anionic surfactant, cationic surfactant or nonionic surfactant.
In step three, the TiO is2The precursor is one or the mixture of two of titanium alkoxide and inorganic titanium salt.
The slow-release/self-cleaning bifunctional alcohol soluble protein-based hybrid microcapsule coating material prepared by the preparation method. The invention has the following advantages:
the invention adopts a template method to prepare the slow-release/self-cleaning bifunctional alcohol-soluble protein-based hybrid microcapsule, and has the advantages of simple experimental equipment, simple preparation method, mild reaction conditions and controllable size and morphology.
The invention takes natural alcohol soluble protein with wide sources as raw materials, the prepared alcohol soluble protein-based hybrid microcapsule has better structural stability, controllable slow release performance, photocatalytic performance and the like, and the alcohol soluble protein-based hybrid microcapsule is applied to base materials such as leather, fabric and the like, can endow the base materials with slow release performance and self-cleaning performance at the same time, and improves the added value of products.
Drawings
FIG. 1 is the SEM photo of pure alcolsoluble protein microcapsule prepared in example.
FIG. 2 shows the hydrophobic substance-coated prolamin-based TiO prepared in the example2Scanning electron micrographs of hybrid microcapsules.
Detailed Description
The present invention will be described in detail with reference to specific embodiments.
The invention utilizes the advantages of unique dissolubility, good self-assembly, wide source, low price and the like of the alcohol soluble protein, coats hydrophobic substances with the effects of fragrance blending, antibiosis, corrosion prevention, insect killing, heat clearing and the like by taking the alcohol soluble protein as a base material, and introduces the hydrophobic substances with the photocatalysis self-cleaning functionOf nano TiO2And preparing the slow-release/self-cleaning bifunctional alcohol-soluble protein-based hybrid microcapsule coating material.
The invention relates to a preparation method of a slow-release/self-cleaning bifunctional alcohol-soluble protein-based hybrid microcapsule coating material, which comprises the following steps:
the method comprises the following steps: mixing 0.74-1.16 parts by mass of prolamin and 85.50-95.50 parts by mass of 75-90% ethanol aqueous solution, adding into a three-neck flask, continuously stirring by using a stirrer, adjusting the pH to 6.5-9.5, heating in a water bath to 25-60 ℃, and then keeping the temperature, stirring and reacting for 0.5-3.0 h to obtain a prolamin solution;
step two: respectively taking 0.11-1.63 parts by mass of hydrophobic substance, 0.20-1.54 parts by mass of surfactant and 3.50-9.00 parts by mass of tetrahydrofuran, mixing at 25-60 ℃, stirring for 0.5-3.0 hours on a stirrer to obtain a mixed solution in which the hydrophobic substance and the surfactant are dissolved, dropwise adding the mixed solution into the alcohol soluble protein solution obtained in the step one, and carrying out heat preservation reaction for 6-24 hours to obtain an alcohol soluble protein mixed solution coated with the hydrophobic substance;
step three: respectively taking 3.50-9.00 parts by mass of tetrahydrofuran and 0.15-1.60 parts by mass of TiO2 precursor, mixing at 25-60 ℃, stirring for 0.5-3.0 h on a stirrer to obtain a mixed solution, dropwise adding the mixed solution into the hydrophobic substance-coated prolamin mixed solution, carrying out heat preservation reaction for 4.0-6.0 h, cooling to normal temperature at room temperature, drying the mixed solution to obtain the hydrophobic substance-coated prolamin-based nano TiO2And (4) compounding the microcapsules.
In the first step, the alcohol soluble protein is one or a mixture of more of zein, gliadin, potato prolamin, modified alcohol soluble protein and other series of proteins with alcohol soluble property;
the types of the hydrophobic substances in the second step comprise alkane, oil, fat, most substances containing grease and the like.
The type of the surfactant in the second step comprises one or more of an anionic surfactant, a cationic surfactant and a nonionic surfactant.
TiO in step III2Precursor bodyIs one or more of titanium alkoxide and inorganic titanium salt.
Example 1
The method comprises the following steps: mixing 0.74 parts by mass of zein and 85.50 parts by mass of 75-90% ethanol aqueous solution, adding into a three-neck flask, continuously stirring with a stirrer, adjusting the pH to 7.0, heating in water bath to 50 ℃, and then keeping the temperature, stirring and reacting for 0.5 h to obtain an prolamin solution;
step two: respectively taking 0.56 part by mass of vanillin, 0.63 part by mass of surfactant F127 and 3.50 parts by mass of tetrahydrofuran, mixing at 40 ℃, stirring for 0.5 h on a stirrer to obtain a mixed solution in which a hydrophobic substance and the surfactant are dissolved, dropwise adding the mixed solution into the alcohol soluble protein solution obtained in the step one, and carrying out heat preservation reaction for 12 h to obtain an alcohol soluble protein mixed solution coated with the hydrophobic substance;
step three: respectively taking 3.50 parts by mass of tetrahydrofuran and 0.36 part by mass of butyl titanate to mix at 40 ℃, stirring for 0.5 h on a stirrer to obtain a mixed solution, dropwise adding the mixed solution into the hydrophobic substance-coated alcohol soluble protein mixed solution, carrying out heat preservation reaction for 5.0 h, cooling to normal temperature at room temperature, and drying the mixed solution to obtain the hydrophobic substance-coated alcohol soluble protein-based nano TiO nano composite2And (4) compounding the microcapsules.
Example 2
The method comprises the following steps: mixing 0.85 mass part of zein and 88.0 mass part of 80% ethanol aqueous solution, adding into a three-neck flask, continuously stirring with a stirrer, adjusting pH to 7.5, heating in water bath to 50 ℃, and then preserving heat, stirring and reacting for 0.5 h to obtain an prolamin solution;
step two: respectively taking 0.63 part by mass of vanillin, 0.68 part by mass of surfactant F127 and 4.50 parts by mass of tetrahydrofuran, mixing at 40 ℃, stirring for 0.5 h on a stirrer to obtain a mixed solution in which a hydrophobic substance and the surfactant are dissolved, dropwise adding the mixed solution into the alcohol soluble protein solution obtained in the step one, and carrying out heat preservation reaction for 12 h to obtain an alcohol soluble protein mixed solution coated with the hydrophobic substance;
step three: 4.50 parts by mass of tetrahydrofuran and 0.45 part by mass of tetrahydrofuran were taken out, respectivelyMixing the butyl titanate at 40 ℃, stirring the mixture for 0.5 h on a stirrer to obtain a mixed solution, dripping the mixed solution into the hydrophobic substance-coated alcohol soluble protein mixed solution, carrying out heat preservation reaction for 5.0 h, cooling the mixed solution to normal temperature at room temperature, and drying the mixed solution to obtain the hydrophobic substance-coated alcohol soluble protein-based nano TiO2And (4) compounding the microcapsules.
Example 3
The method comprises the following steps: mixing 0.96 parts by mass of zein and 90.50 parts by mass of 80% ethanol aqueous solution, adding into a three-neck flask, continuously stirring with a stirrer, adjusting the pH to 8.0, heating in water bath to 50 ℃, and then preserving heat, stirring and reacting for 0.5 h to obtain an prolamin solution;
step two: respectively taking 0.74 mass part of folium artemisiae argyi essence, 0.73 mass part of surfactant F127 and 5.50 mass parts of tetrahydrofuran, mixing at 40 ℃, stirring for 0.5 hour on a stirrer to obtain a mixed solution in which a hydrophobic substance and the surfactant are dissolved, dropwise adding the mixed solution into the alcohol soluble protein solution obtained in the step one, and carrying out heat preservation reaction for 12 hours to obtain an alcohol soluble protein mixed solution coated with the hydrophobic substance;
step three: respectively taking 5.50 parts by mass of tetrahydrofuran and 0.54 part by mass of butyl titanate to mix at 40 ℃, stirring for 0.5 h on a stirrer to obtain a mixed solution, dropwise adding the mixed solution into the hydrophobic substance-coated alcohol soluble protein mixed solution, carrying out heat preservation reaction for 5.0 h, cooling to normal temperature at room temperature, and drying the mixed solution to obtain the hydrophobic substance-coated alcohol soluble protein-based nano TiO nano composite2And (4) compounding the microcapsules.
Example 4
The method comprises the following steps: mixing 1.07 parts by mass of gliadin and 93.0 parts by mass of 80% ethanol water solution, adding into a three-neck flask, continuously stirring by using a stirrer, adjusting the pH to 8.5, heating in water bath to 50 ℃, and then preserving heat, stirring and reacting for 0.5 h to obtain a gliadin solution;
step two: respectively taking 0.82 part by mass of vanillin, 0.78 part by mass of surfactant F127 and 6.50 parts by mass of tetrahydrofuran, mixing at 40 ℃, stirring for 0.5 h on a stirrer to obtain a mixed solution in which a hydrophobic substance and the surfactant are dissolved, dropwise adding the mixed solution into the alcohol soluble protein solution obtained in the step one, and carrying out heat preservation reaction for 12 h to obtain an alcohol soluble protein mixed solution coated with the hydrophobic substance;
step three: respectively taking 6.50 parts by mass of tetrahydrofuran and 0.78 part by mass of butyl titanate to mix at 40 ℃, stirring for 0.5 h on a stirrer to obtain a mixed solution, dropwise adding the mixed solution into the hydrophobic substance-coated alcohol soluble protein mixed solution, carrying out heat preservation reaction for 5.0 h, cooling to normal temperature at room temperature, and drying the mixed solution to obtain the hydrophobic substance-coated alcohol soluble protein-based nano TiO nano composite2And (4) compounding the microcapsules.
Example 5
The method comprises the following steps: mixing 1.16 parts by mass of potato prolamin and 95.50 parts by mass of 80% ethanol aqueous solution, adding into a three-neck flask, continuously stirring by using a stirrer, adjusting the pH to 9.0, heating in water bath to 50 ℃, and then preserving heat, stirring and reacting for 0.5 h to obtain a prolamin solution;
step two: respectively taking 0.93 parts by mass of folium artemisiae argyi essence, 0.83 parts by mass of surfactant F127 and 7.50 parts by mass of tetrahydrofuran, mixing at 40 ℃, stirring for 0.5 hour on a stirrer to obtain a mixed solution in which a hydrophobic substance and the surfactant are dissolved, dropwise adding the mixed solution into the alcohol soluble protein solution obtained in the step one, and carrying out heat preservation reaction for 12 hours to obtain an alcohol soluble protein mixed solution coated with the hydrophobic substance;
step three: respectively taking 7.50 parts by mass of tetrahydrofuran and 0.82 part by mass of butyl titanate to mix at 40 ℃, stirring for 0.5 h on a stirrer to obtain a mixed solution, dropwise adding the mixed solution into the hydrophobic substance-coated alcohol soluble protein mixed solution, carrying out heat preservation reaction for 5.0 h, cooling to normal temperature at room temperature, and drying the mixed solution to obtain the hydrophobic substance-coated alcohol soluble protein-based nano TiO nano composite2And (4) compounding the microcapsules.
FIG. 1 is a scanning electron micrograph of pure alcogest protein microcapsules prepared in example 1. By scanning the microcapsules with an electron microscope, spherical or irregular smooth surface microcapsules with a particle size of about 3-6 μm were observed.
FIG. 2 shows the hydrophobic substance-coated prolamin protein obtained in example 1Radical TiO2Scanning electron micrographs of hybrid microcapsules. By observation, spherical microcapsules with regular shapes and the particle size distribution of 5-8 mu m can be seen, and the microcapsules have rough surface shapes. The hydrophobic substance is coated in the microcapsule, so that the microcapsule structure is more uniform and regular; TiO22Adsorbed on the surface of the alcohol soluble protein by various forces such as hydrogen bond combination, electrostatic attraction and the like. The results demonstrate that this approach works.
The invention is not limited to the examples given, and any equivalent alterations to the technical solution of the invention which are made by those skilled in the art after reading the description of the invention are all covered by the claims of the invention.
Claims (5)
1. A preparation method of a slow-release/self-cleaning bifunctional alcohol-soluble protein-based hybrid microcapsule coating material is characterized by comprising the following steps:
the method comprises the following steps:
step one, preparing a prolamin solution:
mixing 0.74-1.16 parts by mass of prolamin and 85.50-95.50 parts by mass of 75-90% ethanol aqueous solution, adding into a three-neck flask, continuously stirring by using a stirrer, adjusting the pH to 6.5-9.5, heating in a water bath to 25-60 ℃, and then keeping the temperature, stirring and reacting for 0.5-3.0 h to obtain a prolamin solution;
step two, preparing a hydrophobic substance-coated prolamin mixed solution:
respectively taking 0.11-1.63 parts by mass of hydrophobic substance, 0.20-1.54 parts by mass of surfactant and 3.50-9.00 parts by mass of tetrahydrofuran, mixing at 25-60 ℃, stirring for 0.5-3.0 hours on a stirrer to obtain a mixed solution in which the hydrophobic substance and the surfactant are dissolved, dropwise adding the mixed solution into the alcohol soluble protein solution obtained in the step one, and carrying out heat preservation reaction for 6-24 hours to obtain an alcohol soluble protein mixed solution coated with the hydrophobic substance;
step three, preparing alcohol soluble protein-based nano TiO coated with hydrophobic substance2Compounding microcapsules:
taking 3.50-9.00 parts by mass of tetrahydrofuran and 0.15-1.60 parts by mass of TiO respectively2The precursor is fed at 25-60 deg.CMixing, stirring for 0.5-3.0 h on a stirrer to obtain a mixed solution, dripping the mixed solution into the hydrophobic substance-coated alcohol soluble protein mixed solution, reacting for 4.0-6.0 h under heat preservation, cooling to normal temperature at room temperature, and drying the mixed solution to obtain the hydrophobic substance-coated alcohol soluble protein-based nano TiO2Composite microcapsules, namely slow-release/self-cleaning bifunctional alcohol-soluble protein-based hybrid microcapsules;
in the first step, the prolamin is one of zein, gliadin and potato prolamin.
2. The preparation method of the slow-release/self-cleaning bifunctional prolamin-based hybrid microcapsule coating material according to claim 1, wherein the preparation method comprises the following steps:
in the second step, the hydrophobic substances are alkane, oil and fat.
3. The preparation method of the slow-release/self-cleaning bifunctional prolamin-based hybrid microcapsule coating material according to claim 2, wherein the preparation method comprises the following steps:
in the second step, the surfactant is one or a mixture of anionic surfactant, cationic surfactant or nonionic surfactant.
4. The preparation method of the slow-release/self-cleaning bifunctional prolamin-based hybrid microcapsule coating material according to claim 3, wherein the preparation method comprises the following steps:
in step three, the TiO is2The precursor is one or the mixture of two of titanium alkoxide and inorganic titanium salt.
5. A slow-release/self-cleaning bifunctional alcohol-soluble protein-based hybrid microcapsule coating material prepared by the preparation method according to any one of claims 1 to 4.
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| JPH055538B2 (en) * | 1984-06-30 | 1993-01-22 | Myoshi Yushi Kk | |
| WO2004069216A1 (en) * | 2003-02-03 | 2004-08-19 | Dsm Ip Assets B.V. | Novel stabilized cinnamic ester sunscreen compositions |
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