Chlorine dioxide slow-release composition, antibacterial textile and preparation method of antibacterial textile

Abstract

The invention provides a chlorine dioxide slow-release composition. The chlorine dioxide slow-release composition comprises a component A, a component B and a component C, the component A comprises sodium chlorite, a first high-molecular compound and water; the first high-molecular compound comprises one or more of polyvinyl alcohol, polyethylene glycol and polyacrylamide; the component B comprises organic acid, a second high-molecular compound and water; the second high-molecular compound comprises genipin or sodium alginate; the component C comprises a cross-linking agent and water, and the cross-linking agent is chlorate. In the sustained-release composition provided by the invention, the sodium chlorite is wrapped in the first high-molecular compound capable of forming the hydrogel, and then is mixed with the organic acid, the second high-molecular compound and the cross-linking agent to form a cross-linking product wrapping the organic acid, so that the sodium chlorite and the organic acid react along with degradation of the hydrogel and the cross-linking product; and chlorine dioxide gaseous molecules are slowly and continuously released, so that the antibacterial action period of a coating formed by the composition is prolonged.

Description

Technical Field

[0001] This application relates to the field of textile materials technology, and in particular to a chlorine dioxide slow-release composition, antibacterial textiles and their preparation methods. Background Technology

[0002] Materials and preparations with highly efficient antibacterial and disinfectant functions are finding increasingly wider applications in textiles, air purification, food preservation, and soil improvement. Currently, antibacterial agents used in textiles and other daily protective products mainly include natural extracts, nano-inorganic materials, and quaternary ammonium compounds. However, most of these antibacterial agents only have good inhibitory effects on bacteria, with limited ability to kill viruses. Therefore, highly efficient disinfectants, such as chlorine-containing disinfectants, chlorine dioxide, and peroxide disinfectants, are receiving widespread attention.

[0003] Chlorine dioxide is an A1-grade safe disinfectant with broad-spectrum, high-efficiency, and no carcinogenic or mutagenic risks. It can effectively inactivate various pathogenic microorganisms, including coronaviruses, fungi, and spores, without inducing microbial resistance. Current technology typically involves soaking textiles in the disinfectant solution and then drying them; however, this method has a short treatment period, and the disinfection effect disappears after washing. Summary of the Invention

[0004] This application provides a chlorine dioxide sustained-release composition, an antibacterial textile and a method for preparing the same. The chlorine dioxide sustained-release composition provided by this application has a high efficiency antibacterial effect and can continuously release chlorine dioxide gas molecules, thus having a long antibacterial action period.

[0005] This application provides a chlorine dioxide sustained-release composition, comprising: component A, component B and component C;

[0006] Component A comprises sodium chlorite, a first polymer compound, and water; the first polymer compound comprises one or more of polyvinyl alcohol, polyvinyl glycol, and polyacrylamide.

[0007] Component B comprises an organic acid, a second polymeric compound, and water; the second polymeric compound comprises genipin or sodium alginate.

[0008] Component C includes a crosslinking agent and water, wherein the crosslinking agent is a chloride salt.

[0009] In some specific implementations, the mass ratio of sodium chlorite, the first polymer compound, and water in component A is 15~25:5~15:60~80.

[0010] In some specific implementations, the mass ratio of the organic acid, the second polymer compound, and water in component B is 15~25:10~20:55~75.

[0011] In some specific implementations, the mass ratio of the crosslinking agent to water in component C is 5~15:85~95.

[0012] In some specific implementations, the mass ratio of component A, component B and component C is 60~70:10~25:5~30.

[0013] In some specific implementations, the organic acid is one or more of oxalic acid and citric acid.

[0014] In some specific implementations, the crosslinking agent is calcium chloride or magnesium chloride.

[0015] This application provides a method for preparing antibacterial textiles, comprising the following steps:

[0016] The chlorine dioxide slow-release composition described in the above technical solution is provided by mixing component A, component B and component C to obtain a disinfectant solution;

[0017] Textiles are sprayed or soaked with the disinfectant solution and then dried to obtain antibacterial textiles.

[0018] In some specific implementations, the textile is a nonwoven fabric.

[0019] In some specific implementations, the drying temperature is 55℃~80℃.

[0020] This application also provides an antimicrobial textile, comprising a textile and an antimicrobial coating formed on the surface of the textile, the antimicrobial coating being formed from the chlorine dioxide slow-release composition described in the above-described technical solution.

[0021] The chlorine dioxide slow-release composition provided in this application comprises: component A, component B, and component C; component A comprises sodium chlorite, a first polymer compound, and water; the first polymer compound comprises one or more of polyvinyl alcohol, polyvinyl glycol, and polyacrylamide; component B comprises an organic acid, a second polymer compound, and water; the second polymer compound comprises genipin or sodium alginate; and component C comprises a crosslinking agent and water, wherein the crosslinking agent is a chloride salt. In the slow-release composition provided in this application, sodium chlorite is encapsulated in a first polymer compound capable of forming a hydrogel, and then mixed with the organic acid, the second polymer compound, and the crosslinking agent to form a crosslinking product encapsulating the organic acid. This allows the sodium chlorite and organic acid to react with the degradation of the hydrogel and the crosslinking product, slowly and continuously releasing gaseous chlorine dioxide molecules, thus extending the antibacterial activity period of the coating formed by this composition. Attached Figure Description

[0022] Figure 1 This is a photograph of the plate culture results of Experiment Example 1 in this application;

[0023] Figure 2 This is a photograph of the plate culture results of Experiment Example 2 in this application. Detailed Implementation

[0024] It should be understood that the expression “one or more of…” individually includes each of the objects described after the expression, as well as various different combinations of two or more of the described objects, unless otherwise understood from the context and usage. The expression “and / or” combined with three or more described objects should be understood to have the same meaning, unless otherwise understood from the context.

[0025] The terms “including,” “having,” or “containing,” including the use of their grammatical synonyms, should generally be understood as open-ended and non-restrictive, for example, not excluding other unstated elements or steps, unless otherwise specifically stated or understood from the context.

[0026] It should be understood that the order of the steps or the order in which certain actions are performed is not important as long as the invention remains operational. Furthermore, two or more steps or actions can be performed simultaneously.

[0027] The use of any and all instances or exemplary language such as “e.g.” or “including” in this document is merely intended to better illustrate the invention and is not intended to limit the scope of the invention unless the claims are made. No language in this specification should be construed as indicating that any unclaimed element is essential to the practice of the invention.

[0028] Furthermore, the numerical ranges and parameters used to define the present invention are approximate values, and the relevant values ​​in the specific embodiments have been presented as precisely as possible. However, any value inevitably contains standard deviations due to individual test methods. Therefore, unless explicitly stated otherwise, it should be understood that all ranges, quantities, values, and percentages used in this disclosure are modified with the word "approximately". Here, "approximately" generally means that the actual value is within plus or minus 10%, 5%, 1%, or 0.5% of a specific value or range.

[0029] This application provides a chlorine dioxide sustained-release composition, comprising: component A, component B and component C;

[0030] Component A comprises sodium chlorite, a first polymer compound, and water; the first polymer compound comprises one or more of polyvinyl alcohol, polyvinyl glycol, and polyacrylamide.

[0031] Component B comprises an organic acid, a second polymeric compound, and water; the second polymeric compound comprises genipin or sodium alginate.

[0032] Component C includes a crosslinking agent and water, wherein the crosslinking agent is a chloride salt.

[0033] The chlorine dioxide slow-release composition provided in this application includes component A, which comprises sodium chlorite, a first polymer compound, and water. The first polymer compound can form a gel in water and includes, but is not limited to, polyvinyl alcohol, polyvinyl glycol, and polyacrylamide, and may be one or more of these. When the first polymer compound is a combination of multiple substances, this application does not impose any special restrictions on the proportions of each specific substance. The first polymer compound is preferably polyvinyl alcohol. In some specific implementations, the mass ratio of sodium chlorite, the first polymer compound, and water in component A is 15~25:5~15:60~80, more preferably 20:10:70. This application does not impose any special restrictions on the preparation method of component A; simply mixing the raw materials evenly is sufficient. The mixing is preferably carried out under stirring conditions, and the mixing temperature is preferably room temperature.

[0034] The chlorine dioxide slow-release composition provided in this application includes component A, and component B includes an organic acid, a second polymer compound, and water. In component B, the organic acid reacts with sodium chlorite to provide gaseous chlorine dioxide molecules. In some specific implementations, the organic acid includes, but is not limited to, oxalic acid and citric acid, and may be one or more of these. When the organic acid is a combination of multiple substances, this application does not impose any particular limitation on the proportion of each specific substance. In some specific implementations, the organic acid is preferably citric acid. In component B, the second polymer compound serves as a crosslinking agent or a part of the raw material for a crosslinking agent to form a crosslinked product in the composition. In some specific implementations, the second polymer compound includes, but is not limited to, genipin and sodium alginate, and may be one or more of these. When the second polymer compound is a combination of multiple substances, this application does not impose any particular limitation on the proportion of each specific substance. In some specific implementations, the second polymer compound is preferably sodium alginate. In some specific implementations, the mass ratio of the organic acid, the second polymer compound, and water in component B is 15~25:10~20:55~75, preferably 20:15:65. This application does not impose any particular restrictions on the preparation method of component B; simply mixing the raw materials evenly is sufficient. The mixing is preferably carried out under stirring conditions, and the mixing temperature is preferably room temperature.

[0035] The chlorine dioxide slow-release composition provided in this application includes component C, which comprises a crosslinking agent and water. The crosslinking agent is used to form a crosslinked product in the composition, slowing down the reaction rate of sodium chlorite and organic acid, and enhancing stability. In some specific implementations, the crosslinking agent is a chloride salt, including but not limited to calcium chloride or magnesium chloride. In some specific implementations, the mass ratio of the crosslinking agent to water in component C is 5~15:85~95, preferably 10:90.

[0036] In the chlorine dioxide sustained-release composition provided in this application, components A, B, and C are stored and transported separately, and are mixed at the point of use. In some specific implementations, the mass ratio of components A, B, and C is 60~70:10~25:5~30, preferably 68:22:10.

[0037] This application also provides a method for preparing antibacterial textiles, comprising the following steps:

[0038] The chlorine dioxide slow-release composition described in the above technical solution is provided by mixing component A, component B and component C to obtain a disinfectant solution;

[0039] Textiles are sprayed or soaked with the disinfectant solution and then dried to obtain antibacterial textiles.

[0040] This application mixes components A, B, and C of the chlorine dioxide slow-release composition provided by the above technical solution to obtain a disinfectant solution, and then uses the disinfectant solution to spray or soak textiles, and after drying, obtains antibacterial textiles.

[0041] This application does not impose any special limitations on the textiles mentioned, and they can be non-woven fabrics. This application also does not impose any special limitations on the specific processes and parameters of the spraying or soaking, such as soaking or spraying at room temperature. After soaking or spraying, the textiles are dried. In some specific implementations, the drying temperature is 55℃~80℃, preferably 60℃~75℃. After drying, antibacterial textiles are obtained.

[0042] This application also provides an antibacterial textile, comprising a textile and an antibacterial coating formed on the surface of the textile, the antibacterial coating being formed from the chlorine dioxide slow-release composition described in the above-mentioned technical solution. In the antibacterial textile provided by this application, the antibacterial coating has a highly efficient antibacterial effect and continuously releases chlorine dioxide gaseous molecules, exhibiting a long antibacterial action period.

[0043] The chlorine dioxide slow-release composition provided in this application comprises: component A, component B, and component C; component A comprises sodium chlorite, a first polymer compound, and water; the first polymer compound comprises one or more of polyvinyl alcohol, polyvinyl glycol, and polyacrylamide; component B comprises an organic acid, a second polymer compound, and water; the second polymer compound comprises genipin or sodium alginate; and component C comprises a crosslinking agent and water, wherein the crosslinking agent is a chloride salt. In the slow-release composition provided in this application, sodium chlorite is encapsulated in a first polymer compound capable of forming a hydrogel, and then mixed with the organic acid, the second polymer compound, and the crosslinking agent to form a crosslinking product encapsulating the organic acid. This allows the sodium chlorite and organic acid to react with the degradation of the hydrogel and the crosslinking product, slowly and continuously releasing gaseous chlorine dioxide molecules, thus extending the antibacterial activity period of the coating formed by this composition.

[0044] The present invention is further illustrated below with reference to the embodiments. The scope of protection of the present invention is not limited to the following embodiments.

[0045] Example 1

[0046] Sodium chlorite, polyvinyl alcohol, and water in a mass ratio of 20:10:70 were stirred evenly at room temperature to obtain component A.

[0047] Oxalic acid, sodium alginate and water in a mass ratio of 20:15:65 were stirred evenly at room temperature to obtain component B;

[0048] Calcium chloride and water in a mass ratio of 10:90 were stirred evenly at room temperature to obtain component C;

[0049] Components A, B, and C, in a mass ratio of 68:22:10, are mixed thoroughly to obtain a disinfectant solution.

[0050] The nonwoven fabric was soaked in the disinfectant solution for 1 hour and then dried at 50°C to obtain the antibacterial nonwoven fabric.

[0051] Example 2

[0052] Sodium chlorite, polyacrylamide, and water in a mass ratio of 20:10:70 were stirred evenly at room temperature to obtain component A.

[0053] Citric acid, sodium alginate, and water in a mass ratio of 20:15:65 were stirred evenly at room temperature to obtain component B.

[0054] Calcium chloride and water in a mass ratio of 10:90 were stirred evenly at room temperature to obtain component C;

[0055] Components A, B, and C, in a mass ratio of 68:22:10, are mixed thoroughly to obtain a disinfectant solution.

[0056] The nonwoven fabric was soaked in the disinfectant solution for 1 hour and then dried at 65°C to obtain the antibacterial nonwoven fabric.

[0057] Example 3

[0058] Sodium chlorite, polyvinyl alcohol, and water in a mass ratio of 20:10:70 were stirred evenly at room temperature to obtain component A.

[0059] Citric acid, sodium alginate, and water in a mass ratio of 20:15:65 were stirred evenly at room temperature to obtain component B.

[0060] Calcium chloride and water in a mass ratio of 10:90 were stirred evenly at room temperature to obtain component C;

[0061] Components A, B, and C, in a mass ratio of 68:22:10, are mixed thoroughly to obtain a disinfectant solution.

[0062] The nonwoven fabric was soaked in the disinfectant solution for 1 hour and then dried at 80°C to obtain antibacterial nonwoven fabric.

[0063] Example 4

[0064] Sodium chlorite, polyvinyl alcohol, and water in a mass ratio of 25:10:65 were stirred evenly at room temperature to obtain component A.

[0065] Citric acid, sodium alginate, and water in a mass ratio of 25:15:60 were stirred evenly at room temperature to obtain component B.

[0066] Calcium chloride and water in a mass ratio of 10:90 were stirred evenly at room temperature to obtain component C;

[0067] Components A, B, and C, in a mass ratio of 68:22:10, are mixed thoroughly to obtain a disinfectant solution.

[0068] The nonwoven fabric was soaked in the disinfectant solution for 1 hour and then dried at 80°C to obtain antibacterial nonwoven fabric.

[0069] Example 5

[0070] Sodium chlorite, polyvinyl alcohol, and water in a mass ratio of 15:10:75 were stirred evenly at room temperature to obtain component A.

[0071] Citric acid, sodium alginate, and water in a mass ratio of 15:15:70 were stirred evenly at room temperature to obtain component B.

[0072] Calcium chloride and water in a mass ratio of 10:90 were stirred evenly at room temperature to obtain component C;

[0073] Components A, B, and C, in a mass ratio of 68:22:10, are mixed thoroughly to obtain a disinfectant solution.

[0074] The nonwoven fabric was soaked in the disinfectant solution for 1 hour and then dried at 80°C to obtain antibacterial nonwoven fabric.

[0075] Example 6

[0076] Sodium chlorite, polyvinyl glycol, and water in a mass ratio of 20:10:70 were stirred evenly at room temperature to obtain component A.

[0077] Citric acid, sodium alginate, and water in a mass ratio of 20:15:65 were stirred evenly at room temperature to obtain component B.

[0078] Calcium chloride and water in a mass ratio of 10:90 were stirred evenly at room temperature to obtain component C;

[0079] Components A, B, and C, in a mass ratio of 68:22:10, are mixed thoroughly to obtain a disinfectant solution.

[0080] The nonwoven fabric was soaked in the disinfectant solution for 1 hour and then dried at 80°C to obtain antibacterial nonwoven fabric.

[0081] Example 7

[0082] Sodium chlorite, polyethylene glycol, and water in a mass ratio of 25:10:65 were stirred evenly at room temperature to obtain component A.

[0083] Oxalic acid, sodium alginate and water in a mass ratio of 25:15:60 were stirred evenly at room temperature to obtain component B;

[0084] Calcium chloride and water in a mass ratio of 10:90 were stirred evenly at room temperature to obtain component C;

[0085] Components A, B, and C, in a mass ratio of 68:22:10, are mixed thoroughly to obtain a disinfectant solution.

[0086] The nonwoven fabric was soaked in the disinfectant solution for 1 hour and then dried at 80°C to obtain antibacterial nonwoven fabric.

[0087] Example 8

[0088] Sodium chlorite, polyacrylamide, and water in a mass ratio of 25:10:65 were stirred evenly at room temperature to obtain component A.

[0089] Oxalic acid, sodium alginate and water in a mass ratio of 25:15:60 were stirred evenly at room temperature to obtain component B;

[0090] Calcium chloride and water in a mass ratio of 10:90 were stirred evenly at room temperature to obtain component C;

[0091] Components A, B, and C, in a mass ratio of 68:22:10, are mixed thoroughly to obtain a disinfectant solution.

[0092] The nonwoven fabric was soaked in the disinfectant solution for 1 hour and then dried at 80°C to obtain antibacterial nonwoven fabric.

[0093] Experimental Example 1

[0094] The antibacterial properties of the antibacterial nonwoven fabrics prepared in Examples 1-8 and the nonwoven fabrics not treated with disinfectant (hereinafter referred to as Comparative Example 1) were tested according to GB / T 20944.2-2007 Evaluation of Antibacterial Properties of Textiles Part II: Absorption Method.

[0095] The experimental bacterial suspensions were inoculated onto the nonwoven fabric surfaces of each example and Comparative Example 1. After 18 hours, the suspensions were washed and diluted. The diluted bacterial suspensions were then plated and incubated for 24 hours. The viable cell counts were then calculated, and the results are shown in Table 1. Figure 1 Table 1 is a statistical table of the plate culture results of Experiment Example 1 of this application. Figure 1 This is a photograph of the plate culture results from Experiment Example 1 of this application. Figure 1 In the middle, from left to right, the top row shows photos of the plate culture results of Comparative Example 1 and Examples 1-4, and the bottom row shows photos of the plate culture results of Examples 5-8.

[0096] Table 1. Statistical table of plate culture results for Experiment Example 1 of this application.

[0097]

[0098] As shown in Table 1, the antibacterial nonwoven fabric provided in this application has good antibacterial function.

[0099] Experimental Example 2

[0100] The antibacterial properties of the antibacterial nonwoven fabrics prepared in Examples 1-8 and the nonwoven fabrics not treated with disinfectant (hereinafter referred to as Comparative Example 1) were tested according to GB / T 20944.2-2007 Evaluation of Antibacterial Properties of Textiles Part II: Absorption Method.

[0101] The experimental bacterial suspensions were inoculated onto the nonwoven fabric surfaces of each example and Comparative Example 1. After 18 hours, the suspensions were washed and diluted. The diluted bacterial suspensions were then plated and incubated for 24 hours. The viable cell counts were then calculated, and the results are shown in Table 2. Figure 2 Table 2 is a statistical table of the plate culture results of Experiment Example 2 of this application. Figure 2 This is a photograph of the plate culture results from Experiment Example 2 of this application. Figure 2 In the middle, from left to right, the top row shows photos of the plate culture results of Comparative Example 1 and Examples 1-4, and the bottom row shows photos of the plate culture results of Examples 5-8.

[0102] Table 2. Statistical table of plate culture results for Experiment Example 2 of this application.

[0103]

[0104] As shown in Table 2, the antibacterial nonwoven fabric provided in this application has good antibacterial function.

[0105] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A chlorine dioxide slow-release composition comprising: component A, component B and component C; the component A comprises sodium chlorite, a first high molecular compound and water; the first high molecular compound comprises one or more of polyvinyl alcohol, polyethylene glycol and polyacrylamide; the component B comprises an organic acid, a second high molecular compound and water; the second high molecular compound comprises genipin or sodium alginate; the component C comprises a cross-linking agent and water, and the cross-linking agent is a chloride salt.

2. The chlorine dioxide slow-release composition according to claim 1, wherein the mass ratio of the sodium chlorite, the first high molecular compound and the water in the component A is 15-25:5-15:60-80.

3. The chlorine dioxide slow-release composition according to claim 2, wherein the mass ratio of the organic acid, the second high molecular compound and the water in the component B is 15-25:10-20:55-75; and the mass ratio of the cross-linking agent and the water in the component C is 5-15:85-95.

4. The chlorine dioxide slow-release composition according to any one of claims 1-3, wherein the mass ratio of the component A, the component B and the component C is 60-70:10-25:5-30. the organic acid is one or more of oxalic acid and citric acid.

5. The chlorine dioxide slow release composition according to claim 4, wherein the cross-linking agent is calcium chloride or magnesium chloride.

6. The chlorine dioxide slow release composition according to claim 4, wherein 7. A method for preparing an antibacterial textile, comprising the following steps: providing the chlorine dioxide slow-release composition according to any one of claims 1-6, mixing the component A, the component B and the component C to obtain a disinfecting solution; spraying or soaking the textile with the disinfecting solution, and drying to obtain an antibacterial textile. the textile is a non-woven fabric.

8. The preparation method according to claim 7, characterized in that, the drying temperature is 55-80℃.

9. The preparation method according to claim 7, characterized in that, 10. An antibacterial textile, comprising a textile and an antibacterial coating layer formed on the surface of the textile, wherein the antibacterial coating layer is formed by the chlorine dioxide slow-release composition according to any one of claims 1-6. ​

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