CN109722880B - Preparation method of chenille ground mat with antibacterial function - Google Patents
Preparation method of chenille ground mat with antibacterial function Download PDFInfo
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Abstract
The invention discloses a preparation method of a chenille ground mat with an antibacterial function, which comprises the following steps: s1, immersing the chenille ground mat to be processed into an alkaline solution to roughen the surface of the fiber; cleaning and drying for later use; s2, preparing a treatment solution in which chitosan is dissolved; s3, spraying the treatment solution on the surface of the chenille ground mat under the irradiation of ultraviolet rays, wherein chitosan is grafted to fibers of the chenille ground mat; s4, passing the chenille ground mat through a roller to homogenize the treatment liquid in the chenille ground mat; drying, cleaning, spin-drying and obtaining an expected product after drying; the chenille ground mat prepared by the method is environment-friendly and easy to implement, is fluffy, has good water absorption and has certain antibacterial performance.
Description
Technical Field
The invention relates to the field of textiles, in particular to a preparation method of a chenille ground mat with an antibacterial function.
Background
The invention discloses a preparation method of a super-absorbent large-particle chenille ground mat with the application number of 2017114957962, wherein the chenille ground mat with the large particle diameter of more than 12mm is developed, and the ground mat is woven by adopting superfine fiber materials, so that the super-absorbent large-particle chenille ground mat has the advantages of strong dust absorption, high water absorption and easiness in cleaning, and meanwhile, the large particles have prominent visual effect and strong fashion sense. The chenille ground mat in the patent is woven by using terylene which is hydrophobic fiber, and the common terylene has poor hygroscopicity due to no hydrophilic group and a compact macromolecular chain structure, so that the use range of the chenille ground mat is limited; on the other hand, chenille ground mats have abundant villus structures, and the bacterium is bred easily for a long time of service, needs more to maintain.
Disclosure of Invention
The invention aims to provide a preparation method of a chenille ground mat with an antibacterial function, the preparation method is environment-friendly and easy to implement, and the prepared chenille ground mat is fluffy, has good water absorption and has certain antibacterial performance.
In order to solve the technical problem, the technical scheme of the invention is as follows: a preparation method of a chenille ground mat with an antibacterial function comprises the following steps:
s1, immersing the chenille ground mat to be processed into an alkaline solution to roughen the surface of the fiber; cleaning and drying for later use;
s2 preparation of treatment solution
Placing a certain amount of chitosan in an acetic acid solution under the condition of stirring to be dissolved uniformly to obtain a treatment solution;
s3, spraying the treatment solution on the surface of the chenille ground mat under the irradiation of ultraviolet rays, wherein chitosan is grafted to fibers of the chenille ground mat;
s4, passing the chenille ground mat through a roller to homogenize the treatment liquid in the chenille ground mat;
and then drying, cleaning, drying, and obtaining the expected product after drying.
Preferably, the alkali solution is sodium hydroxide solution, and the concentration of sodium hydroxide in the sodium hydroxide solution is 2 g/L. The chenille ground mat is immersed into the alkali liquor to reduce the alkali, so that the roughening of the surface of the fiber is realized, the contact between the fiber and the treatment liquid is facilitated, the effect of grafting is improved, and the chenille ground mat with good water absorption effect and good antibacterial effect is favorably obtained.
Preferably, the power of the ultraviolet ray used in S3 is 300W to 1000W, and the irradiation time is 20min to 50 min. The activation degree of the fibers and the photodegradation degree of the chitosan are controlled by adjusting the power and the irradiation time of ultraviolet rays, the grafting uniformity is improved, the hydrophilic performance of the chenille ground mat is improved, and the hydrophilicity of the chenille ground mat is improved.
Preferably, in S3, before the spraying, the chenille mat is needle-punched, and the chenille mat is formed with liquid-permeable holes in both the base fabric and the pile by needle-punching. A plurality of liquid penetrating holes for enabling the treatment liquid to enter the chenille ground mat are formed in the chenille ground mat through mechanical force of needling, and water absorption of fibers in the chenille ground mat is improved.
Preferably, when the chenille ground mat is uniformly pierced in S3, the piercing needles for piercing the chenille ground mat heat the chenille ground mat for shaping the liquid-permeable holes, and heat shaping the chenille ground mat through the piercing needles promotes stable formation of the liquid-permeable holes, so that the surface liquid of the chenille ground mat enters the chenille ground mat through the liquid-permeable holes, and the water absorption of the chenille ground mat manufactured by the invention is improved.
It is further preferred that the temperature at which the lancet is heated is 120 ℃ to 130 ℃: the time is 1min to 2 min. By this heating process parameter, stable formation of the liquid-permeable pores is promoted.
Preferably, after the chitosan is completely dissolved in the treatment solution prepared in S2, citric acid and sodium acetate are added into the solution, wherein the mass fraction of the chitosan in the treatment solution is 0.5-1.5%, the mass fraction of the acetic acid is 2-6%, the mass fraction of the citric acid is 4%, and the mass fraction of the sodium acetate is 0.05-0.2%. After the chenille ground mat is treated by the treatment liquid, the hydrophilicity of the chenille ground mat is obviously improved, the water absorption rate is improved, the antibacterial property is improved, and the cross-linking reaction of chitosan and citric acid is promoted by the presence of sodium acetate.
More preferably, the treatment solution of S2 contains 1% by mass of chitosan, 4% by mass of acetic acid, 3% by mass of citric acid, and 0.1% by mass of sodium acetate. The water absorption and antibacterial property of the chenille ground mat prepared by the invention are further improved.
Preferably the ratio of the mass of the treatment liquid to the dry weight of the chenille mat to be treated is from 30% to 60%. The hydrophilic performance of the chenille ground mat is controlled by controlling the amount of the treatment liquid, so that the antibacterial property of the chenille ground mat is improved.
By adopting the technical scheme, the invention has the beneficial effects that:
1. according to the method, chitosan is dissolved and uniformly sprayed on the chenille land mat under the ultraviolet irradiation condition, due to the action of ultraviolet light, the chitosan is subjected to photodegradation reaction caused by the irradiation of the ultraviolet light, acetamido glucose units on chitosan molecular chains are subjected to deacetylation reaction, meanwhile, beta- (1,4) glucoside bonds are broken, and carbonyl is produced in the degradation process; due to the irradiation of ultraviolet light, the surface of the fiber generates various active groups such as-OH, -CHO, -COOH and-CO, and the active groups formed by the chitosan are combined to graft the chitosan on the surface of the fiber, so that the fastness and the durability of the chitosan on the fiber are improved, and the hydrophilic performance is improved and the hand feeling of the fiber is improved; the chenille ground mat has the advantage that the antibacterial performance of the chenille ground mat is improved due to the fact that chitosan is grafted on the surface of the chenille ground mat.
2. The chenille ground mat is soaked in alkali liquor, and PET molecules on the surface of terylene are slightly hydrolyzed. Because benzene ring and 2 methylene in the PET molecular structure are all more stable on chemical structure, the polyester fiber surface amorphous region, low crystallization part and defect position, the molecule on the fiber surface drops after the decomposition, form unevenness's vestige on the fiber surface, make the fibre attenuate and have hydrophilicity, increase the clearance of dacron interlacing point and change the wettability of fabric, provide suitable reaction site for follow-up chitosan grafting simultaneously, promote the amount of chenille ground mat grafting chitosan, improve the water absorption rate of chenille ground mat.
3. The chitosan solution which is uniformly dissolved is used, and is distributed on the surface of the chenille ground mat in a spraying mode, and is subjected to ultraviolet irradiation to perform photodegradation in the process of falling and distributing on the surface of the chenille ground mat, and meanwhile, the surface of the chenille ground mat is also activated under the action of ultraviolet light to promote grafting, so that the reactivity of fibers and chitosan is improved through ultraviolet irradiation, the reaction process is simplified, and the grafting efficiency is improved.
4. The raw materials used in the invention are chitosan, acetic acid, sodium hydroxide and the like, the components are safe, and the ultraviolet rays are used as the energy sources for the photodegradation and the grafting of the chitosan, so the equipment is simpler; therefore, the chenille ground mat prepared by the invention has the characteristics of good water absorption rate, good antibacterial property, safe use and convenient production.
Thereby achieving the above object of the present invention.
Detailed Description
In order to further explain the technical solution of the present invention, the present invention is explained in detail by the following specific examples.
Example 1
The embodiment discloses a preparation method of a chenille ground mat with an antibacterial function, which comprises the following steps:
s1, immersing the chenille ground mat to be processed into a sodium hydroxide solution, wherein the concentration of sodium hydroxide in the sodium hydroxide solution is 2g/L, and the fiber surface is rough; cleaning and drying for later use;
the chenille ground mat is immersed into the alkali liquor to reduce the alkali, so that the roughening of the surface of the fiber is realized, the contact between the fiber and the treatment liquid is facilitated, the effect of grafting is improved, and the chenille ground mat with good water absorption effect and good antibacterial effect is favorably obtained.
S2 preparation of treatment solution
Placing chitosan in an acetic acid solution under the stirring condition to be dissolved uniformly to obtain a treatment solution, wherein the mass fraction of chitosan in the treatment solution is 1%, the mass fraction of acetic acid is 4%, and the balance is water;
s3 spraying treatment liquid under ultraviolet irradiation
The needle-punched chenille ground mat is provided with liquid permeating holes in the base cloth and the fluff through needle punching. A plurality of liquid penetrating holes for enabling the treatment liquid to enter the chenille ground mat are formed in the chenille ground mat through mechanical force of needling, and water absorption of fibers in the chenille ground mat is improved.
When evenly impaling the chenille ground mat, the felting needle for impaling the chenille ground mat heats the design that is used for passing through the liquid hole to the chenille ground mat, heats the stable formation that stereotypes to the chenille ground mat through the thorn and promotes passing through the liquid hole, guarantees that chenille ground mat surface liquid enters into the inside of chenille ground mat through passing through the liquid hole, improves the hydroscopicity of the chenille ground mat that the invention made.
The temperature of the needle is 120-130 ℃: the time is 1min to 2 min.
Spraying treatment liquid on the surface of the chenille ground mat under the irradiation of ultraviolet rays, wherein chitosan is grafted to fibers of the chenille ground mat;
the ratio of the mass of the treatment liquid to the dry weight of the chenille ground mat to be treated is 5 percent;
the power of the ultraviolet ray is 300W, and the irradiation time is 50 min. The selection of technological parameters such as the power of ultraviolet rays, the irradiation time and the like is controlled to influence the grafting on the fiber surface and the degradation of chitosan caused by the ultraviolet rays in the spraying process, so that the molecular weight of the chitosan grafted on the fiber surface is reduced, the grafting uniformity is improved, the hydrophilic performance of the chenille ground mat is improved, and the hydrophilicity of the chenille ground mat is improved.
Ultraviolet lamp exceeding
S4, passing the chenille ground mat through a roller to homogenize the treatment liquid in the chenille ground mat;
and then drying, cleaning, drying, and obtaining the expected product after drying.
The chenille ground mats obtained in this example were subjected to the tests of grafting efficiency, moisture absorption rate and antibacterial property, and the test results are shown in table 2.
Example 2
The main difference between the present embodiment and the embodiment is that after the chitosan is completely dissolved in the treatment solution, a certain amount of citric acid and sodium acetate are added into the treatment solution for dissolution; the amounts of the materials used and the process parameters for each step in this example are detailed in Table 1.
The chenille ground mats obtained in this example were subjected to the tests of grafting efficiency, moisture absorption rate and antibacterial property, and the test results are shown in table 2.
Example 3
The main differences between this example and example 2 are detailed in table 1; the chenille ground mats obtained in this example were subjected to the tests of grafting efficiency, moisture absorption rate and antibacterial property, and the test results are shown in table 2.
Example 4
The main differences between this example and example 2 are detailed in table 1; the chenille ground mats obtained in this example were subjected to the tests of grafting efficiency, moisture absorption rate and antibacterial property, and the test results are shown in table 2.
Example 5
The main differences between this example and example 2 are detailed in table 1; the chenille ground mats obtained in this example were subjected to the tests of grafting efficiency, moisture absorption rate and antibacterial property, and the test results are shown in table 2.
Example 6
The main differences between this example and example 2 are detailed in table 1; the chenille ground mats obtained in this example were subjected to the tests of grafting efficiency, moisture absorption rate and antibacterial property, and the test results are shown in table 2.
Example 7
The main differences between this example and example 2 are detailed in table 1; the chenille ground mats obtained in this example were subjected to the tests of grafting efficiency, moisture absorption rate and antibacterial property, and the test results are shown in table 2.
The method for testing the grafting efficiency, the moisture absorption rate and the antibacterial performance comprises the following steps:
the grafting efficiency is G, and the grafting efficiency is G,
G＝(w-w0)/w0*100％
wherein w0And w is the dry weight of the fabric before and after grafting;
the moisture absorption rate is U, and the moisture absorption rate is U,
U＝(m-m0)/m0*100％
wherein m is0Is the dry weight of the fabric before water absorption and m is the weight of the fabric after washing.
Test of antibacterial Property
The method is suitable for producing textiles with non-dissoluble antibacterial agents according to the GB 15979-2002 hygienic standard of disposable sanitary products, also called as an oscillating flask method.
Test strains
Staphylococcus aureus (ATCC 25923);
escherichia coli (ATCC25922), a gram-negative bacterium.
X＝(A-B)/A×100％
Wherein X is the bacteriostasis rate; a is the average colony number of the sample to be tested before oscillation; b is the average colony number of the test sample after shaking.
Comparative example
The same chenille mats as those used in example 1 for the treatment were subjected to moisture absorption rate and antibacterial property tests in the same manner as in the examples; the specific results are shown in Table 2.
Table 1 list of process parameters for each step of examples 1 to 7
Table 2 comparative list of quality evaluation indexes of products 1 to 7 with comparative examples
As can be seen from the combination of the parameters of comparative example and examples 1 to 7 and the evaluation index data of the obtained products, the grafting efficiency of the chenille mats treated by the method of the present invention gradually increased with the increase of the amount of the treatment liquid and the increase of the chitosan content in the treatment liquid, but when the grafting efficiency was increased to a certain extent, the chitosan content grafted on the fiber surfaces of the chenille mats approached saturation, and the liquid absorption rate and the antibacterial rate of the chenille mats remained substantially stable even after the gradual increase. The water absorbability of the products 1 to 7 is more than 80 percent and can reach 97 percent at most, and meanwhile, the antibacterial property is also obviously improved along with the improvement of the grafting efficiency.
The dosage of the treatment liquid in the embodiment 1 is the same as that of the treatment liquid in the embodiment 3, and the dosage of the chitosan is also the same; the dosage of the treatment liquid in the embodiment 2 is the same as that of the treatment liquid in the embodiment 4, and the dosage of the chitosan is also the same; however, the grafting efficiency of the products 3 and 4 is higher than that of the products 1 and 2, respectively, and it is known that the citric acid and sodium acetate added into the treatment solution promote the grafting of chitosan, thereby improving the grafting efficiency.
After products 1 to 4 were washed with water 3 times, the grafting efficiency was retested, and the specific data are shown in table 3.
TABLE 3 grafting efficiency table after washing products 1 to 4 with water for 3 times respectively
| Item | Efficiency of grafting |
| Product 1 | 0％ |
| Product 2 | 0.04％ |
| Product 3 | 0.08％ |
| Product 4 | 0.19％ |
As can be seen from the data in table 3, the addition of citric acid and sodium acetate to the treatment solutions used in examples 3 and 4 results in a stronger bond between chitosan and fiber, and thus the corresponding products have more durable water absorption effect and antibacterial effect.
Claims (7)
1. A preparation method of a chenille ground mat with an antibacterial function is characterized in that: the method comprises the following steps:
s1, immersing the chenille ground mat to be processed into an alkaline solution to roughen the surface of the fiber; cleaning and drying for later use;
s2 preparation of treatment solution
Placing a certain amount of chitosan in an acetic acid solution under the condition of stirring to be dissolved uniformly to obtain a treatment solution;
s3, spraying the treatment solution on the surface of the chenille ground mat under the irradiation of ultraviolet rays, wherein chitosan is grafted to fibers of the chenille ground mat;
in S3, before spraying, the chenille ground mat is needled, and liquid-permeable holes are formed in the chenille ground mat in the base cloth and the fluff by needling;
s3, uniformly puncturing the chenille ground mat, and heating the chenille ground mat by the puncturing needles for puncturing the chenille ground mat for shaping the liquid permeation holes;
s4, passing the chenille ground mat through a roller to homogenize the treatment liquid in the chenille ground mat;
and then drying, cleaning, drying, and obtaining the expected product after drying.
2. A method for preparing a chenille mat having an antibacterial function as claimed in claim 1, wherein: the alkali solution is sodium hydroxide solution, and the mass fraction of sodium hydroxide in the sodium hydroxide solution is 2 g/L.
3. A method for preparing a chenille mat having an antibacterial function as claimed in claim 1, wherein: in S3, the power of ultraviolet ray is 300-1000W, and the irradiation time is 20-50 min.
4. A method for preparing a chenille mat having an antibacterial function as claimed in claim 1, wherein: the temperature of the needle is 120-130 ℃: the time is 1min to 2 min.
5. A method for preparing a chenille mat having an antibacterial function as claimed in claim 1, wherein: after the chitosan is completely dissolved in the treatment solution prepared in S2, citric acid and sodium acetate are added into the solution, wherein the mass fraction of the chitosan in the treatment solution is 0.5-1.5%, the mass fraction of the acetic acid is 2-6%, the mass fraction of the citric acid is 4%, and the mass fraction of the sodium acetate is 0.05-0.2%.
6. A method for preparing a chenille mat having an antibacterial function as claimed in claim 1, wherein: after the chitosan is completely dissolved in the treatment solution prepared in S2, citric acid and sodium acetate are added into the solution, wherein the mass fraction of the chitosan in the treatment solution is 1%, the mass fraction of the acetic acid is 4%, the mass fraction of the citric acid is 3%, and the mass fraction of the sodium acetate is 0.1%.
7. A method for preparing a chenille mat having an antibacterial function as claimed in claim 1, wherein: the ratio of the mass of the treatment liquid to the dry weight of the chenille mat to be treated is 30 to 60%.
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| CN110106647B (en) * | 2019-06-17 | 2021-11-02 | 杭州伊利奥纺织有限公司 | Preparation method and device of antibacterial chenille fabric |
| CN111172742A (en) * | 2020-02-28 | 2020-05-19 | 山东锦程地毯有限公司 | Water-absorbing deodorant carpet and preparation method thereof |
| CN114717781A (en) * | 2022-04-13 | 2022-07-08 | 都革涛 | Chenille ground mat processing equipment for improving water absorption performance |
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| CN101074541A (en) * | 2007-06-18 | 2007-11-21 | 大连利健生物技术开发股份有限公司 | Antibacterial fabric finishing agent containing chitose its production and usage |
| CN106012495A (en) * | 2016-07-05 | 2016-10-12 | 安徽农业大学 | Bast fiber fabric with protective function and preparation method thereof |
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