Surfactant system containing bacterial cellulose

Abstract

The invention provides a surfactant system containing bacterial cellulose. The surfactant system comprises a bacterial cellulose compound composition, a stabilizer, an anionic surfactant, a zwitterionic surfactant, a nonionic surfactant, a first pH regulator, a thickener, a first preservative and water, the content of the bacterial cellulose compound composition is 0.01-0.1 wt% in terms of bacterial cellulose; the pH (Potential of Hydrogen) value of the surfactant system is 4.5 to 7.0. The surfactant system disclosed by the invention has good bearing force on suspended particles, is good in stability and can be kept clear and transparent for a long time.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of bacterial cellulose, in particular to a surfactant system containing bacterial cellulose. BACKGROUND

[0002] With the upgrading of the consumption era, in addition to the use effect of the product, consumers also have more requirements for the appearance of the product. Some products, especially washing and protecting products, usually add some suspended particles with different shapes to achieve high-visual appearance and functional effect, so as to stimulate the purchase desire of consumers. Because there is a density difference between these solid particles and the material, the particles in the system are easy to settle or float, making the system unstable and affecting the appearance of the sample.

[0003] Bacterial cellulose (BC) is a natural high polymer material synthesized by microorganisms such as Acetobacter and Rhizobium. Its chemical composition is pure cellulose (beta-1, 4-glucan), which has unique physical and chemical properties. Compared with cellulose from other sources, bacterial cellulose does not contain lignin, hemicellulose and other impurities, and its purity is close to 100%. It has a super-fine three-dimensional nanometer network structure, high purity, and its fiber diameter is only 20-100 nm, and the crystallinity is as high as 70-95%. It has great advantages in the application of food, skin care, medical and biological materials, textile industry, new energy and electronic materials. Due to the limitation of surface chemical properties, bacterial cellulose has certain disadvantages in some applications, such as poor stability. At the same time, as a product that can be directly applied, it also needs to meet the requirements of shelf life, i.e. microbial problems, stability under different temperature conditions, and suspension ability.

[0004] Therefore, it is urgent to develop a surfactant system to improve the stability of the system and the suspension ability of the suspended particles. SUMMARY

[0005] In view of the deficiencies in the prior art, the present application provides a surfactant system containing bacterial cellulose, which can be used in the field of washing and protection, has good supporting force for suspended particles, good stability, and the system can maintain clear and transparent for a long time.

[0006] According to the present application, a surfactant system containing bacterial cellulose is provided, which comprises: a bacterial cellulose compound composition, a stabilizer, an anionic surfactant, an amphoteric surfactant, a nonionic surfactant, a first pH adjuster, a thickening agent, a first preservative and water; the content of the bacterial cellulose compound composition is 0.01-0.1wt% based on bacterial cellulose; and the pH value of the surfactant system is 4.5-7.0.

[0007] The surfactant system according to the present application is weakly acidic or neutral, with a pH value of 4.5-7.0, such as 6.0. The bacterial cellulose is added in the form of a bacterial cellulose compounded composition; the bacterial cellulose compounded composition can jointly act with other components in the system to have good supporting and suspending capacity for suspended particles, has good suspending stability, and the system can remain clear and transparent for a long time; and the bacterial cellulose is non-toxic and harmless, safe and mild, has good biological compatibility, and will not cause environmental pollution; and can be used in the field of washing and protection, etc.

[0008] The specific amount of the bacterial cellulose in the surfactant system according to the present application can also be adjusted according to the required yield stress of the suspended particles to be suspended in subsequent use. The bacterial cellulose is added in the form of a bacterial cellulose compounded composition, and the added amount of the composition can be 1-12.5wt%, such as 1.25-10wt%, such as 5wt%, such as 2.5wt%. The suspended particles can be common in the art, such as real flowers, gold foil, carbon black, biomimetic flowers, soluble particles of 500-900 microns, nylon balls, cellulose balls, mica powder, ginger particles, walnut sanding particles (40-60 mesh), oil beads, etc. When the required yield stress of the suspended particles is low, the added amount of the bacterial cellulose can be slightly low; when the required yield stress of the suspended particles is high, the added amount of the bacterial cellulose can be increased. In a specific example, the content of the bacterial cellulose is 0.01-0.05wt%, such as 0.02wt%, 0.03wt%, 0.04wt%, etc.; the system can have higher stability and better suspending capacity for the suspended particles.

[0009] According to the present application, the bacterial cellulose compounded composition comprises the following components by weight percentage: bacterial cellulose, content of 0.4-1.2wt%; glycerol, content of 4-20wt%; second preservative, content of 0.1-1wt%; second pH adjuster, content of 0-0.6wt%; and the balance of water; and the pH value of the compounded composition is 3.5-7.5.

[0010] According to the present application, the bacterial cellulose compounded composition appears as white to light yellow viscous liquid, has good shelf life stability under different temperature conditions, has good shelf life stability under different temperature conditions, has good suspending capacity under the AES surfactant system, and improves the stability of the system.

[0011] According to one embodiment of the present application, the content of the bacterial cellulose in the bacterial cellulose compounded composition is 0.5-1 wt%; the content of the glycerol is 4-15 wt%. In one embodiment, the pH value of the bacterial cellulose compounded composition is 4.5-6.5, such as 4.5-5.5, such as 4.5, 6.0, etc. Within the above range, the bacterial cellulose compounded composition has higher stability and higher transparency when used in a low concentration in a surfactant system.

[0012] According to the present application, the bacterial cellulose is a cellulose nanofiber, having a substructure nanoscale unit, a semi-crystalline structure (crystallinity > 70%), and a high aspect ratio and flexibility. In one embodiment, the average radius of the bacterial cellulose is < 20 nm.

[0013] According to the present application, the second preservative comprises a water-soluble preservative. The water-soluble preservative can be dissolved in water and can effectively play a role in preventing corrosion. The water-soluble preservatives commonly used in the art can be used in the present application. For example, p-hydroxyacetophenone, 1,2-hexanediol, octanediol, sodium benzoate, potassium sorbate, pentylene glycol, ethylhexylglycerin, phenoxyethanol, chlorphenesin, hydroxybenzoic acid ester, capryl hydroxamic acid, methyl chloroisothiazolin (MCI) and methyl isothiazolin (MI). In one embodiment, the content of the second preservative in the bacterial cellulose compounded composition is 0.2-0.4 wt%, such as 0.3 wt%, 0.5 wt%.

[0014] According to the present application, the first and second pH adjusters are weakly acidic pH adjusters commonly used in the art, and specific examples include but are not limited to citric acid, lactic acid, sodium citrate. By adding the second pH adjuster, the pH value of the bacterial cellulose compounded composition is further controlled. Whether the second pH adjuster needs to be added and its content is determined according to the required pH value range of the bacterial cellulose compounded composition. In one embodiment, the content of the second pH adjuster in the bacterial cellulose compounded composition is 0-0.6 wt%, such as 0.01-0.02 wt%, 0.01-0.1 wt%, etc.

[0015] According to the present application, the stabilizer can be a stabilizer commonly used in the art, such as disodium EDTA, tetrasodium glutamate diacetate, etc. In one embodiment, the content of the stabilizer is 0.01-1 wt%, such as 0.1 wt%, 0.5 wt%.

[0016] According to one specific embodiment of the present application, the anionic surfactant (AES surfactant) can employ an anionic surfactant commonly used in the art, which can include sodium fatty alcohol polyoxyethylene ether sulfate. The sodium fatty alcohol polyoxyethylene ether sulfate, such as at least one selected from the group consisting of sodium cocoampho ether sulfate, sodium lauryl ether sulfate and sodium myristyl ether sulfate. In a more preferred embodiment, the AES surfactant is selected as sodium lauryl ether sulfate. In one specific embodiment, the content of the anionic surfactant in the surfactant system is 5-15wt%, such as 7wt%, 11wt%, 13wt%.

[0017] According to one specific embodiment of the present application, the zwitterionic surfactant can employ a zwitterionic surfactant commonly used in the art, which can include a betaine type surfactant. The betaine type surfactant, such as at least one selected from the group consisting of cocamidopropyl hydroxysultaine, cocamidopropyl betaine, dodecyldimethyl sulfopropyl betaine and dodecyl hydroxypropyl sulfobetaine; preferably at least one selected from the group consisting of cocamidopropyl betaine, dodecyldimethyl sulfopropyl betaine and dodecyl hydroxypropyl sulfobetaine. In a more preferred embodiment, the zwitterionic surfactant is selected as cocamidopropyl betaine. In one specific example, the content of the zwitterionic surfactant in the surfactant system is 1-4wt%, such as 1wt%, 2wt% and the like.

[0018] According to one specific embodiment of the present application, the nonionic surfactant can employ a nonionic surfactant commonly used in the art, which can employ a glucoside surfactant or a cocamide surfactant commonly used in the art, such as at least one selected from the group consisting of decyl glucoside, octyl glucoside, cocamide DEA, cocamide MEA. In a more preferred embodiment, the nonionic surfactant is at least one selected from the group consisting of decyl glucoside and cocamide MEA. In one specific example, the content of the nonionic surfactant in the surfactant system is 1.5-5wt%, such as 2wt%, 3wt%.

[0019] According to the present application, the pH value can be controlled and adjusted by adding a first pH adjusting agent. In the surfactant system, the amount of the first pH adjusting agent can be adjusted to the required range of 4.5-7.0.

[0020] According to the present application, the thickening agent can employ an inorganic salt thickening agent commonly used in the art, such as sodium chloride, potassium chloride, sodium sulfate and the like. In one specific embodiment, the content of the thickening agent in the surfactant system is 0.5-3wt%, such as 1wt%, 2wt%.

[0021] According to the present application, the first preservative can be the same as or different from the second preservative. The first preservative can be a preservative commonly used in the art, such as phenoxyethanol, chlorphenesin, etc. In a specific example, the content of the first preservative in the surfactant system is 0.1-1 wt%, such as 0.5 wt%, 0.8 wt%.

[0022] According to a specific embodiment of the present application, the content of the bacterial cellulose compound composition in the surfactant system is 0.01-0.07 wt% based on the bacterial cellulose. Within this range, the surfactant system can maintain better transparency and stability.

[0023] The surfactant system according to the present application is prepared by the following method: first, preparing the bacterial cellulose compound composition, then adding the stabilizer, anionic surfactant, zwitterionic surfactant, nonionic surfactant, first pH adjuster, thickening agent, first preservative and water, stirring uniformly to obtain the surfactant system containing bacterial cellulose. If necessary, the thickening agent, first pH adjuster and anionic surfactant can be added in the form of an aqueous solution.

[0024] The preparation of the bacterial cellulose compound composition includes the following steps: first, preparing the aqueous bacterial cellulose dispersion; adding glycerol and mixing, then adding an aqueous solution of the second preservative and mixing; if necessary for pH value control of the bacterial cellulose compound composition, an aqueous solution of the second pH adjuster can be continuously added. In addition, the amount of water in the compound composition can be controlled as needed for concentration control.

[0025] The bacterial cellulose compound composition according to the present application has a simple preparation process, and the prepared bacterial cellulose compound composition can make bacterial celluloses of different sources and processing methods have consistent application consistency and good shelf life stability under different temperature conditions.

[0026] According to the present application, the aqueous bacterial cellulose dispersion is an aqueous bacterial nanocellulose dispersion. The average radius of the bacterial cellulose is <20 nm. In a specific embodiment, the bacterial cellulose is defibrillated, also known as modified, to separate the fiber bundle into one-dimensional distribution while retaining a large aspect ratio, to make cellulose nanofiber, also known as bacterial nanocellulose, which has a sub-structure nanoscale unit, a semi-crystalline structure, a high aspect ratio and flexibility, and can enhance its stability in the composition. Common modification methods include chemical modification, composite modification, physical treatment, etc.

[0027] According to the present application, the bacterial cellulose water dispersion is prepared, and the steps include raw material purification, crushing, irradiation, cellulase hydrolysis and oxidation. The raw material purification step can be selected according to actual needs; the crushing can be placed before or after the irradiation; the oxidation step can be determined according to the energy of the irradiation; and the cellulase hydrolysis can be selected according to the situation.

[0028] The conventional crushing method is that the cellulose is crushed after being mixed with a certain amount of water, and the concentration of the cellulose is in the range of 0.1-2 wt%. The crushing degree is determined, and D90 is in the range of 50-300 μm. The conventional crushing equipment can be used, such as a shearing type crusher, a grinding type crusher (colloid mill, disc mill), a high-pressure homogenizer, etc.

[0029] The raw material purification can be performed by using the method commonly used in the art, for example, the bacterial cellulose obtained by fermentation is soaked in a 0.1-4% (typically 0.5-1%) sodium hydroxide solution for 1-24 hours for three to five times. The irradiation, cellulase hydrolysis and oxidation can also be performed by using the conventional method.

[0030] The surfactant system according to the present application has good supporting and suspending capacity for suspended particles, has good suspending stability, is non-toxic and harmless, safe and mild, has good biological compatibility, and does not cause environmental pollution, and can be used in the field of skin care, etc. BRIEF DESCRIPTION OF DRAWINGS

[0031] In order to more clearly illustrate the technical solutions in the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description are some embodiments of the present application, and those skilled in the art can also obtain other drawings according to these drawings without creative labor.

[0032] Figure 1 is the effect picture of the suspended nylon ball of the sample example of the present application.

[0033] Figure 2 is the effect picture of the suspended nylon ball of the sample comparative example of the present application.

[0034] Figure 3 is the effect picture of the suspended different particles of the sample example of the present application.

[0035] Figure 4 is Figure 3 the black and white effect picture. DETAILED DESCRIPTION

[0036] In order to make the objects, technical solutions and advantages of the present application clearer, the technical solutions in the present application will be described clearly and completely below in conjunction with the drawings in the present application. Obviously, the described embodiments are only some of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the protection scope of the present application.

[0037] The endpoints of the ranges and any values stated in the present disclosure are not limited to the precise values stated. The ranges and values should be interpreted as approximately between the stated values. Individual endpoints of the ranges, the endpoints of the ranges and individual points stated, and individual points stated can be combined to form one or more new ranges, which are to be construed as being specifically disclosed herein.

[0038] Unless specific techniques or conditions are indicated in the embodiments of the present application, the techniques or conditions described in the literature in the art or according to the product instructions are used. The devices, instruments, reagents, etc. used are all conventional products that can be purchased through regular channels. The experimental reagents and raw materials involved are commercially available.

[0039] The particle size is measured by a Malvern laser particle size analyzer.

[0040] The electron beam (β-ray) generated by a 10 MeV electron accelerator is used for radiation treatment.

[0041] The light transmittance is detected by a spectrophotometer.

[0042] Embodiment of bacterial cellulose compound composition Batch 1: The raw material is bacterial cellulose (BC) in the form of coconut fruit 1. Mechanical treatment of bacterial cellulose The bacterial cellulose is mixed with an appropriate amount of water, the concentration of bacterial cellulose is 1 wt%, and the shearing type pulverizer is pulverized for 30 min, and the D90 is 150 μm.

[0043] 2. Reducing the degree of polymerization of bacterial cellulose Irradiation treatment: the irradiation dose is 20 KGy, and the cellulose chain is broken after irradiation, so that the degree of polymerization of bacterial cellulose is reduced.

[0044] 3. TEMPO (tetramethylpiperidine oxide) oxidation Take 1L of bacterial cellulose slurry after reducing the degree of polymerization (10g dry weight), add 0.18g Tempo and 1.0g NaBr in turn, stir for 5min. Under stirring conditions, add 80mmol NaClO, control the temperature at 15~20℃, control the pH of the system to 10.2±0.4 with 0.5mol / L NaOH, react for 4h, maintain the stability of pH by adding NaOH during the reaction, until the pH decreases by less than 0.05 in 30min, the reaction is completed. Adjust the pH to neutral with HCl. Remove small molecules and soluble salts in the system after reaction with a 500nm ceramic membrane, and obtain the defibrillated bacterial cellulose water dispersion.

[0045] Batch 2: bacterial cellulose obtained by fermentation with the method in Example 7 of CN202311738547.7 and using the strain in the title of Example 7.

[0046] 1. Purification treatment of raw materials Soak the cellulose with 0.8wt% sodium hydroxide solution for five times, each time for 12h.

[0047] 2. Mechanical treatment of cellulose Mix the bacterial cellulose with an appropriate amount of water, the concentration of bacterial cellulose is 0.5%, and the high-pressure homogenizer is crushed at 600bar for 20min, the particle size D90 is 100μm. 3. Reducing the degree of polymerization of bacterial cellulose Irradiation treatment: the irradiation dose is 20KGy, the cellulose chain is broken after irradiation, and the degree of polymerization of bacterial cellulose is reduced.

[0048] 4. TEMPO (tetramethylpiperidine oxide) oxidation Take 1L of bacterial cellulose slurry after reducing the degree of polymerization (10g dry weight), add 0.18g Tempo and 1.0g NaBr in turn, stir for 5min. Under stirring conditions, add 80mmol NaClO, control the temperature at 20~25℃, control the pH of the system to 10.2±0.4 with 0.5mol / L NaOH, react for 4h, maintain the stability of pH by adding NaOH during the reaction, until the pH decreases by less than 0.05 in 30min, the reaction is completed. Adjust the pH to neutral with HCl. Remove small molecules and soluble salts in the system after reaction with a 500nm ceramic membrane, and obtain the defibrillated bacterial cellulose water dispersion.

[0049] Batch 3: the raw material is the same as Batch 1 1. Reducing the degree of polymerization of cellulose Irradiation treatment: the irradiation dose is 15KGy, the cellulose chain is broken after irradiation, and the degree of polymerization of bacterial cellulose is reduced.

[0050] 2. Mechanical treatment of cellulose The bacterial cellulose with reduced degree of polymerization was mixed with an appropriate amount of water, and the bacterial cellulose concentration was 2wt%. The bacterial cellulose was pulverized by a high-pressure homogenizer at 600bar for 20min, and the particle size D90 was measured to be 220μm.

[0051] 3. TEMPO (tetramethylpiperidine oxide) oxidation 1L of the pulverized cellulose slurry (10g dry weight) was measured, and 0.18g of Tempo and 1.0g of NaBr were sequentially added and stirred for 5min. Under stirring, 60mmol of NaClO was added, the temperature was controlled at 30~35℃, and the pH of the system was controlled to 10.2±0.4 by using 0.5mol / L of NaOH. The reaction was carried out for 3 hours, and the pH was maintained by adding NaOH until the pH dropped by less than 0.05 in 30min. The reaction was completed. The pH was adjusted to neutral by using HCl. The small molecules and soluble salts in the system after the reaction were removed by using a 14000Da dialysis bag, and a water dispersion of defibrillated bacterial cellulose was obtained.

[0052] Batch 4: The raw material was the same as Batch 1 1. Mechanical treatment of bacterial cellulose The bacterial cellulose was mixed with an appropriate amount of water, and the bacterial cellulose concentration was 0.2wt%. The bacterial cellulose was pulverized by a shearing type pulverizer for 30min, and the particle size D90 was 90μm.

[0053] 2. Reducing the degree of polymerization of cellulose Irradiation treatment: The irradiation dose was 150KGy. The cellulose chain was broken after irradiation, the degree of polymerization of the fiber was reduced, and finally a water dispersion of defibrillated bacterial cellulose was obtained.

[0054] The water dispersion of defibrillated bacterial cellulose in Batches 1-4 was tested by centrifugation. The cellulose mass concentration was 0.2~0.6%, the centrifugation condition was 5000rpm for 15min, and the sedimentation volume ratio was less than 5%. It was determined that all the samples were qualified. The defibrillated bacterial cellulose was bacterial nanocellulose, and the average radius was <20nm.

[0055] Example 1 The water dispersion of defibrillated bacterial cellulose in Batch 1 was concentrated, and the concentration of the concentrated solution was 1.8wt%. Glycerol was added to the water dispersion of defibrillated bacterial cellulose in Batch 1. Sodium benzoate was dissolved in water and added to the above-mentioned water dispersion of bacterial cellulose, and stirred uniformly to obtain a mixed solution. Citric acid was dissolved in water and added to the above-mentioned mixed solution. Then water was added to obtain a compounded composition. The content of each component of the compounded composition and the pH value are shown in Table 1 below.

[0056] Examples 2-6 The preparation method was the same as Example 1, except that the component contents and the pH values were different. The details are shown in Table 1 below.

[0057] Example 7 The preparation method is the same as Example 1, except that sodium benzoate is replaced by p-hydroxyacetophenone and 1,2-hexanediol (1:1 by weight, which can be added together or separately), and no citric acid is added to obtain a complex composition. The content of each component and the pH value are shown in Table 1 below.

[0058] Example 8 The preparation is the same as Example 7, except that the preservative used is phenoxyethanol and ethylhexylglycerin (2.5:1 by weight, which can be added together or separately). The content of each component and the pH value are shown in Table 1.

[0059] Comparative Examples 1-8 The preparation method is the same as Example 1, except that the content of each component and the pH value are different. See Table 2 below for details.

[0060] Stability test The complex composition obtained above is subjected to a stability test, and observed for a certain period of time at a certain temperature index. The parameters are shown in Table 2 below. The stability test includes high and low temperature cycle stability test, which refers to-18 to 45℃ cycle test, and one cycle refers to 24 hours at-18℃ and then 24 hours at 45℃. If it is normal after 5 cycles, it is considered that the high and low temperature cycle stability is normal. The stability test results are shown in Tables 1 and 2.

[0061] Table 1

[0062] Normal means that all examples in Table 1 are subjected to stability test under the conditions in Table 3, and the stability is normal. The turbidity of Example 2 is high, but it is not stratified.

[0063] Table 2

[0064] Table 3

[0065] From the above data, it can be seen that the bacterial cellulose complex composition according to the present application, using bacterial cellulose of different sources and different treatment steps, the obtained composition has good stability; it can remain stable at low temperature (-18℃) and high temperature (45℃) for a long time, such as 1 month or 3 months; even after 5 cycles between-18~45℃, it still has good stability; it can maintain the same appearance and odor as the initial state, and no bacteria are grown.

[0066] Surfactant system example The bacterium cellulose complex composition, stabilizer, anionic surfactant, amphoteric surfactant, nonionic surfactant, first pH regulator, thickening agent and first preservative in the foregoing Example 3 were sequentially added into water, stirred uniformly to obtain a surfactant system. The components and specific contents of the sample examples and sample comparative examples are shown in Tables 4 and 5.

[0067] The thickening agent sodium chloride was added in the form of a 20 wt% aqueous solution, the first pH regulator citric acid was added in the form of a 10 wt% aqueous solution, the anionic surfactant was added in the form of a 70 wt% aqueous solution, the decyl glucoside and the coco glucoside in the nonionic surfactant were added in the form of a 50 wt% aqueous solution, the cocoamidopropyl betaine in the amphoteric surfactant was added in the form of a 30 wt% aqueous solution, and the cocoamidopropyl hydroxyl sultaine was added in the form of a 35 wt% aqueous solution; it should be understood that the contents of the above-mentioned substances in the following table are the amounts without water.

[0068] Table 4

[0069] Table 5

[0070] As shown in Table 6, the sample examples 1-3 and sample comparative examples 1-6 were each taken in an appropriate amount and placed in a transparent glass bottle, and were placed at a low temperature of 4°C for one month; the sample examples 1-3 were still stable, and the transmittance was still greater than or equal to 70%; while the transmittance of the sample comparative examples 1-6 decreased.

[0071] The sample examples 1-3 and sample comparative examples 1-6 were each taken in an appropriate amount and placed in a transparent glass bottle, and nylon balls (diameter 0.5 cm) were added, and after stirring uniformly, they were placed at 50°C for one month. The sample examples 1-3 were still transparent and clear, and the nylon balls were still suspended in the system (see Figure 1 ); while the transparency of the sample comparative examples 1-6 decreased obviously, and the nylon balls in the sample comparative examples 3-6 settled (see Figure 2 ).

[0072] The sample example 1 was taken in an appropriate amount and placed in three transparent glass bottles, and 2 wt% (based on the mass of the surfactant system) of the following substances were added: walnut sanding particles (40-60 mesh), artificial flower petals (diameter 1-6 mm), and soft beads (particle size 3-5 mm), and after stirring uniformly, they were placed at 45°C for one month. As shown in Figure 4 , from left to right, they were respectively walnut sanding particles, flower petals and suspended oil beads, and the sample was still stable and did not settle.

[0073] The surfactant system according to the application has good stability, good suspension performance for suspended particles, and good shelf stability and suspension stability.

[0074] Table 6

[0075] Finally, it should be noted that the above examples are only used to illustrate the technical solutions of the present application, and are not intended to limit the same; although the present application has been described in detail with reference to the foregoing examples, those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing examples, or make equivalent replacements for part of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A surfactant system containing bacterial cellulose, comprising: A bacterial cellulose compound composition, a stabilizer, anionic surfactant, amphoteric surfactant, nonionic surfactant, a first pH adjuster, a thickener, a first preservative, and water; The content of the bacterial cellulose compound composition, calculated as bacterial cellulose, is 0.01~0.1wt%; the pH value of the surfactant system is 4.5-7.

0.

2. The surfactant system according to claim 1, characterized in that, The bacterial cellulose compound composition comprises the following components in weight percentage: Bacterial cellulose, content 0.4~1.2 wt%; Glycerin, content 4-20 wt%; The second preservative has a content of 0.1~1wt%; The second pH adjuster has a content of 0-0.6 wt%. and the remaining water; The pH value of the compound composition is 3.5-7.

5.

3. The surfactant system according to claim 2, characterized in that, In the bacterial cellulose compound composition, the content of bacterial cellulose is 0.5-1 wt%, and / or the content of glycerol is 4-15 wt%, and / or the content of the second preservative is 0.2-0.4 wt%, and / or the amount of the second pH adjuster is 0.01-0.6 wt%; and / or the pH value of the compound composition is 4.5-6.

5.

4. The surfactant system according to claim 2 or 3, characterized in that, The bacterial cellulose is cellulose nanofiber with an average radius of <20nm.

5. The surfactant system according to any one of claims 1-4, characterized in that, The second preservative includes a water-soluble preservative.

6. The surfactant system according to any one of claims 1-5, characterized in that, The stabilizer has a content of 0.01-1 wt%, the anionic surfactant has a content of 5-15 wt%, the amphoteric surfactant has a content of 1-4 wt%, the nonionic surfactant has a content of 1.5-5 wt%, the thickener has a content of 0.5-3 wt%, and the first preservative has a content of 0.1-1 wt%.

7. The surfactant system according to any one of claims 1-6, characterized in that, The content of the bacterial cellulose compound composition, calculated as bacterial cellulose, is 0.01~0.07 wt%.

8. The surfactant system according to any one of claims 1-7, characterized in that, The anionic surfactant includes sodium fatty alcohol polyoxyethylene ether sulfate, preferably selected from at least one of sodium cocoyl alcohol polyether sulfate, sodium lauryl alcohol polyether sulfate, and sodium myristyl alcohol polyether sulfate.

9. The surfactant system according to any one of claims 1-7, characterized in that, The zwitterionic surfactant includes a betaine-type surfactant, preferably selected from at least one of cocamidopropyl hydroxysulfonate betaine, cocamidopropyl betaine, dodecyl dimethyl sulfonate betaine, and dodecyl hydroxypropyl sulfonate betaine; more preferably selected from cocamidopropyl betaine.

10. The surfactant system according to any one of claims 1-7, characterized in that, The nonionic surfactant is selected from at least one of decyl glucoside, octyl glucoside, cocamide MEA, and cocamide DEA; preferably selected from decyl glucoside and cocamide MEA.

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