CN109825889B - Regenerated cellulose fiber with cooling and bacteriostatic functions and preparation method thereof - Google Patents
Regenerated cellulose fiber with cooling and bacteriostatic functions and preparation method thereof Download PDFInfo
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Abstract
The invention relates to a regenerated cellulose fiber with cooling and bacteriostasis functions and a preparation method thereof, wherein the preparation method comprises the following steps: (1) respectively preparing a mint extracting solution and a honeysuckle extracting solution; (2) preparing a viscose stock solution: treating pulp to obtain a viscose stock solution for spinning; (3) preparing a spinning solution: mixing the mint extract and the honeysuckle extract to obtain a bacteriostatic composition of the plant extract, and adding the bacteriostatic composition into the viscose stock solution for blending to obtain a spinning stock solution; (4) spinning: spinning according to a wet spinning process to obtain the regenerated cellulose fiber with the cooling and bacteriostatic functions. The invention is prepared from honeysuckle extract, mint extract and pulp as raw materials by a wet spinning process, and natural plant extract is added into cellulose fiber, so that the fiber has the characteristics of coolness, bacteriostasis, good air permeability and excellent drape effect.
Description
Technical Field
The invention relates to a regenerated cellulose fiber and a preparation method thereof, in particular to a regenerated cellulose fiber with cooling and bacteriostasis functions and a preparation method thereof, belonging to the technical field of functional cellulose fibers.
Background
The existing regenerated cellulose fiber products have the characteristics of good air permeability, smoothness and comfortableness in wearing, and all belong to the basic functions of fibers. With the development of the times and the progress of science and technology, people begin to put forward requirements on the textiles which are used daily. The health and environmental protection are promoted, and fiber products with various functions become the mainstream trend of the market.
A common bacteriostatic and antibacterial fiber is prepared by mixing metal ions: silver, copper, zinc and the like are added into the fiber, but metal ions have certain biological toxicity to human bodies. The antibacterial component extracted from the natural medicinal materials is safe, environment-friendly, green and durable, and is more and more favored by people in the process of development and application. Honeysuckle has wide and famous medicinal value since ancient times, and has the main effects of clearing heat and removing toxicity and mainly treating epidemic febrile disease, fever, heat-toxin bloody dysentery, carbuncle, cellulitis, furuncle and the like. Modern researches prove that the honeysuckle contains pharmacological active ingredients such as chlorogenic acid and luteolin glycoside, and has strong inhibitory effect on various pathogenic bacteria such as hemolytic streptococcus and staphylococcus aureus, and pathogenic viruses causing upper respiratory tract infection. The mint contains factors such as menthol and the like, and can cool the skin of people, so that the mint can diminish inflammation, relieve pain, relieve itching, detoxify and disperse wind and heat.
The functional fiber of natural plant components is safe to human bodies, has no side effect, is green and environment-friendly, and therefore, is widely concerned in application.
Chinese patent CN102505171A discloses a method for preparing viscose fiber with honeysuckle antibacterial function, which adds honeysuckle powder into spinning solution to produce fiber with antibacterial function. However, the performance and efficacy of the fiber are affected by the problems of whether the honeysuckle powder can be dissolved in the viscose stock solution, whether the dissolution is uniform, and the like.
Chinese patent CN101613886A discloses a production process of mint fiber, which is a method for embedding mint essential oil by adding beta-cyclodextrin on the basis of the traditional viscose stock solution production process. However, considering the poor thermal stability of the cyclodextrin-encapsulated form, decomposition may occur during spinning.
Chinese patent CN106511116A discloses a method for preparing a facial mask containing traditional Chinese medicine components, wherein the method for extracting the effective components of plants such as honeysuckle flower is to directly decoct the honeysuckle flower with water for many times and collect the filtrate as the extract. However, the extraction of the effective components of the Chinese herbs may not be sufficient by a simple decoction method.
The extraction method is not adopted in the methods for extracting the effective components of the plants in the patent methods.
Disclosure of Invention
The invention aims to solve the technical problem of providing a regenerated cellulose fiber with cooling and bacteriostasis functions and a preparation method thereof.
The technical scheme for solving the technical problems is as follows: a preparation method of regenerated cellulose fibers with cooling and bacteriostasis functions comprises the following steps:
(1) respectively preparing a mint extracting solution and a honeysuckle extracting solution;
(2) preparing a viscose stock solution: treating pulp to obtain a viscose stock solution for spinning;
(3) preparing a spinning solution: mixing the mint extract and the honeysuckle extract to obtain a bacteriostatic composition of the plant extract, and adding the bacteriostatic composition into the viscose stock solution for blending to obtain a spinning stock solution;
(4) spinning: spinning according to a wet spinning process to obtain the regenerated cellulose fiber with the cooling and bacteriostatic functions.
The invention has the beneficial effects that: the invention relates to a preparation method of regenerated cellulose fiber, which is characterized in that honeysuckle extract, mint extract and pulp are used as raw materials to prepare a fiber product through a wet spinning process, and natural plant extract is added into the cellulose fiber, so that the fiber has the characteristics of coolness, bacteriostasis, good air permeability and excellent draping feeling.
On the basis of the technical scheme, the invention can be further improved as follows.
Further, in the step (1), the mint extract is prepared by the following method: weighing a certain amount of mint, adding the mint into a pulverizer, pulverizing into powder, adding ethanol with the weight of 3 times of that of the mint powder, performing 1 st ultrasonic extraction with the ultrasonic frequency of 70KHz, and after performing ultrasonic treatment for 30min, transferring the extract into a clean centrifugal tube to obtain clear liquid 1; adding 3 times of ethanol into the rest mint powder after the 1 st ultrasonic extraction for 2 nd ultrasonic extraction, wherein the ultrasonic frequency is 70KHz, and transferring the extract into a clean centrifuge tube after ultrasonic treatment for 30min to obtain clear liquid 2; adding 3 times of ethanol into the rest mint powder after the 2 nd ultrasonic extraction for the 3 rd ultrasonic extraction, wherein the ultrasonic frequency is 70KHz, and transferring the extract into a clean centrifugal tube after ultrasonic treatment for 30min to obtain clear liquid 3; and combining the clear liquid 1, the clear liquid 2 and the clear liquid 3 to obtain the mint extract.
Further, in the step (1), the honeysuckle extract is prepared by the following method: weighing a certain amount of honeysuckle, adding the honeysuckle into a grinder, grinding the honeysuckle into powder, adding ethanol with the weight being 3 times that of the honeysuckle powder, carrying out 1 st ultrasonic extraction with the ultrasonic frequency of 70KHz, carrying out ultrasonic treatment for 30min, and transferring the extract into a clean centrifugal tube to obtain clear liquid 1; adding 3 times of ethanol by weight into the remaining honeysuckle powder after the 1 st ultrasonic extraction for 2 nd ultrasonic extraction, wherein the ultrasonic frequency is 70KHz, and transferring the extract into a clean centrifuge tube after ultrasonic treatment for 30min to obtain clear liquid 2; adding 3 times of ethanol by weight into the remaining honeysuckle powder after the 2 nd ultrasonic extraction for 3 rd ultrasonic extraction, wherein the ultrasonic frequency is 70KHz, and after ultrasonic treatment is carried out for 30min, transferring the extract into a clean centrifugal tube to obtain clear liquid 3; and combining the clear liquid 1, the clear liquid 2 and the clear liquid 3 to obtain the honeysuckle extracting solution.
The beneficial effect of adopting the further scheme is that: at present, the solvents used for extracting polycyclic aromatic hydrocarbons in moss are basically all organic solvents and have certain volatility. If a large amount of solvent is used for extraction, not only is it wasted, but also the environment is polluted. Therefore, the invention reduces the solvent dosage as much as possible on the premise of ensuring the extraction effect, improves the extraction efficiency, and determines the type of the extracting agent, the dosage of the extracting agent, the ultrasonic frequency and the extraction time on the premise of carrying out an optimization experiment.
Further, in the step (2), the pulp is selected from one or a mixture of two of wood pulp and bamboo pulp, the alpha-fiber content of the pulp is not lower than 95%, and the alpha-fiber content of the viscose stock solution is 8.8%.
The above contents refer to mass fractions.
Further, in the step (3), the adding amount of the mint extracting solution is 3% -7% of the content of alpha cellulose in the viscose stock solution, and the adding amount of the honeysuckle extracting solution is 7% -13% of the content of the alpha cellulose in the viscose stock solution, wherein the contents refer to mass fraction.
In the invention, the mint extract contains menthol, is a terpenoid organic compound, is a main component of mint plants, exists in a free state and an ester state, has the effect of stimulating a nervous system, has the functions of resisting allergy and relieving itching while enabling skin to generate cool feeling, has strong inhibitory action on staphylococcus epidermidis, staphylococcus aureus and the like, and has safe chemical properties and stable mild structure.
In the invention, due to the chlorogenic acid, luteolin glycoside and other pharmacological active ingredients in the honeysuckle extract, the honeysuckle extract has the effects of treating various pathogenic bacteria such as: has strong inhibitory effect on hemolytic streptococcus, Staphylococcus aureus and other pathogenic bacteria, upper respiratory infection pathogenic virus, etc. Therefore, the honeysuckle extract is a potential natural fiber bacteriostatic agent, does not cause skin allergy due to chemical stimulation, has good cooling and bacteriostatic effects, and can be used for preparing safe and effective bacteriostatic fibers.
The mint extract with cooling feeling and certain bacteriostatic ability and the honeysuckle extract with strong bacteriostatic ability are mixed according to a certain proportion to form the bacteriostatic composition. The two extracts do not produce chemical reaction after being mixed and have good compatibility with the viscose stock solution. Under the synergistic effect of the two extracts, the fiber has cool skin feeling and good antibacterial performance.
Further, in the step (2), the solid content of the viscose stock solution is 8-10%, and in the step (3), the solid content of the spinning stock solution is 8-11%.
Further, in the step (3), the preparation of the spinning solution comprises the following specific steps: mixing the mint extract with the honeysuckle extract according to 3-7% of the content of alpha fibers in the viscose stock solution and 7-13% of the content of alpha fibers in the viscose stock solution, uniformly mixing to obtain the bacteriostatic composition of the plant extract, and adding the bacteriostatic composition into the viscose stock solution.
Further, in the step (4), the wet spinning process specifically comprises: and (2) after being metered by a metering pump, feeding the mixture into a 49-51 ℃ coagulating bath through a gooseneck and a spinning nozzle, wherein the coagulating bath consists of 110-120 g/L sulfuric acid, 330-360 g/L sodium sulfate and 10.5 +/-0.5 g/L zinc sulfate, the spinning speed is 36-40 m/min, and the mixture is subjected to desulfurization, bleaching, oiling and drying to obtain a finished fiber, so that the regenerated cellulose fiber with the cooling and bacteriostatic functions is obtained.
The invention also relates to a regenerated cellulose fiber with cooling and bacteriostasis functions, which is prepared by the preparation method.
The beneficial effects of the above technical scheme are: the present invention also provides a regenerated cellulose fiber comprising: mint extract, honeysuckle extract and cellulose fiber matrix. Compared with common fibers, the fibers provided by the invention have the advantages that the inhibition rate of staphylococcus aureus is more than or equal to 92.6%, the inhibition rate of escherichia coli is more than or equal to 93.2%, and the inhibition rate of hemolytic streptococcus is more than or equal to 90.3%; compared with common fibers, the fabric has cool hand feeling under the illumination of 28-32 ℃. The cellulose fiber provided by the invention has the performances of cooling and bacteriostasis, and realizes the technical breakthrough of the compatibility of comfort and bacteriostasis of the cellulose fiber.
Detailed Description
The principles and features of this invention are described below in conjunction with examples which are set forth to illustrate, but are not to be construed to limit the scope of the invention.
Example 1
The method comprises the following steps: preparing extractive solution of herba Menthae and flos Lonicerae
Weighing 30g of mint, adding the mint into a pulverizer to pulverize the mint into powder, adding 3 times of ethanol by weight for the 1 st time to perform ultrasonic extraction, performing suction filtration on an extraction liquid after extraction for half an hour, and taking clear liquid 1. And adding 3 times of ethanol by weight for ultrasonic extraction in the 2 nd time, performing suction filtration on the extract after extraction for half an hour, and taking a clear liquid 2. And 3, adding 3 times of ethanol by weight for ultrasonic extraction in the 3 rd time, performing suction filtration on the extract after extraction for half an hour, and taking clear liquid 3. Mixing the clear liquids 1, 2 and 3 to obtain herba Menthae extractive solution. The ultrasonic frequency of the ultrasonic extraction is 70 KHz.
Weighing 50g of honeysuckle, adding the honeysuckle into a grinder to be ground into powder, adding 3 times of ethanol by weight for the 1 st time to perform ultrasonic extraction, performing suction filtration on an extract liquor after extraction for half an hour, and taking a clear liquid 1. And adding 3 times of ethanol by weight for ultrasonic extraction in the 2 nd time, performing suction filtration on the extract after extraction for half an hour, and taking a clear liquid 2. And 3, adding 3 times of ethanol by weight for ultrasonic extraction in the 3 rd time, performing suction filtration on the extract after extraction for half an hour, and taking clear liquid 3. And mixing the clear liquids 1, 2 and 3 to obtain the honeysuckle extracting solution. The ultrasonic frequency of the ultrasonic extraction is 70 KHz.
Step two: preparation of viscose stock solution
The wood pulp is made into viscose stoste by the processes of dipping → pressing → etiolation → dissolving → filtering → defoaming, etc. The alpha fiber content (mass fraction) of the pulp is not less than 95%, and the alpha fiber content (mass fraction) of the viscose stock solution is 8.8%.
Step three: preparation of blended spinning dope and spinning formation
Uniformly mixing mint extract with the mass fraction of 3% of the content of alpha fibers in the viscose stock solution and honeysuckle extract with the mass fraction of 7% of the content of the alpha fibers in the viscose stock solution, standing for defoaming, adding the mixture into the viscose stock solution in the injection stage before spinning, allowing the mixture to enter a 49-51 ℃ coagulation bath through a gooseneck and a spinneret, wherein the coagulation bath consists of 110-120 g/L sulfuric acid, 330-360 g/L sodium sulfate and 10.5 +/-0.5 g/L zinc sulfate, the spinning speed is 36-40 m/min, and then performing processes such as desulfurization, bleaching, oiling, drying and the like to obtain the fiber product with cooling and antibacterial effects.
The fiber prepared in the embodiment 1 contains mint and honeysuckle functional components, the inhibition rate on staphylococcus aureus is 92.6%, the inhibition rate on escherichia coli is 93.2%, and the inhibition rate on hemolytic streptococcus is 90.3%. The surface temperature of the fiber of the present example was measured to be 26 ℃ after being exposed to constant temperature light at 28 ℃ for 30 minutes under the condition of 20 ℃.
Example 2
The method comprises the following steps: preparing herba Menthae, flos Lonicerae, and extractive solution
Weighing 50g of mint, adding the mint into a pulverizer to pulverize the mint into powder, adding 3 times of ethanol by weight for the 1 st time to perform ultrasonic extraction, performing suction filtration on an extraction liquid after extraction for half an hour, and taking clear liquid 1. And adding 3 times of ethanol by weight for ultrasonic extraction in the 2 nd time, performing suction filtration on the extract after extraction for half an hour, and taking a clear liquid 2. And 3, adding 3 times of ethanol for ultrasonic extraction in the 3 rd time, extracting for half an hour, carrying out suction filtration on the extract liquor, and taking a clear liquid 3. Mixing the clear liquids 1, 2 and 3 to obtain herba Menthae extractive solution. The ultrasonic frequency of the ultrasonic extraction is 70 KHz.
Weighing 80g of honeysuckle, adding the honeysuckle into a grinder to be ground into powder, adding 3 times of ethanol for the 1 st time to perform ultrasonic extraction, performing suction filtration on an extract liquor after extraction for half an hour, and taking a clear liquid 1. And adding 3 times of ethanol for ultrasonic extraction in the 2 nd time, extracting for half an hour, carrying out suction filtration on the extract liquor, and taking a clear liquid 2. And 3, adding 3 times of ethanol for ultrasonic extraction in the 3 rd time, extracting for half an hour, carrying out suction filtration on the extract liquor, and taking a clear liquid 3. And mixing the clear liquids 1, 2 and 3 to obtain the honeysuckle extracting solution. The ultrasonic frequency of the ultrasonic extraction is 70 KHz.
Step two: preparation of viscose stock solution
The bamboo pulp is processed into viscose stock solution by the processes of dipping → pressing → etiolation → dissolution → filtration → defoaming, etc. The content of alpha fiber (mass fraction) of the bamboo pulp is not less than 95 percent, and the content of alpha fiber (mass fraction) of the viscose stock solution is 8.8 percent.
Step three: preparation of blended spinning dope and spinning formation
Uniformly mixing the mint extract with 6 mass percent of the content of alpha fibers in the viscose stock solution and the honeysuckle extract with 11 mass percent of the content of the alpha fibers in the viscose stock solution, standing for defoaming, adding the mixture into the viscose stock solution in the injection stage before spinning, allowing the mixture to enter a solidification bath at 49-51 ℃ through a gooseneck and a spinneret, wherein the solidification bath consists of 110-120 g/L sulfuric acid, 330-360 g/L sodium sulfate and 10.5 +/-0.5 g/L zinc sulfate, the spinning speed is 36-40 m/min, and then performing processes such as desulfurization, bleaching, oiling, drying and the like to obtain the fiber product with cooling and bacteriostasis effects.
The fiber prepared in the embodiment 2 contains mint and honeysuckle functional components, and has an inhibition rate of 93.7% on staphylococcus aureus, an inhibition rate of 94.1% on escherichia coli and an inhibition rate of 91.2% on hemolytic streptococcus. The surface temperature of the fiber of the present example was measured to be 25 ℃ after being exposed to constant temperature light at 28 ℃ for 30 minutes under the condition of 20 ℃ of the surface temperature of the fiber.
Example 3
The method comprises the following steps: preparing extractive solution of herba Menthae and flos Lonicerae
Weighing 70g of mint, adding the mint into a pulverizer to pulverize the mint into powder, adding 3 times of ethanol in volume for the 1 st time to perform ultrasonic extraction, performing suction filtration on an extraction liquid after extraction for half an hour, and taking clear liquid 1. And adding 3 times of ethanol for ultrasonic extraction in the 2 nd time, extracting for half an hour, carrying out suction filtration on the extract liquor, and taking a clear liquid 2. And 3, adding 3 times of ethanol for ultrasonic extraction in the 3 rd time, extracting for half an hour, carrying out suction filtration on the extract liquor, and taking a clear liquid 3. Mixing the clear liquids 1, 2 and 3 to obtain herba Menthae extractive solution. The ultrasonic frequency of the ultrasonic extraction is 70 KHz.
Weighing 100g of honeysuckle, adding the honeysuckle into a grinder to be ground into powder, adding 3 times of ethanol for the 1 st time to perform ultrasonic extraction, performing suction filtration on an extract liquor after extraction for half an hour, and taking a clear liquid 1. And adding 3 times of ethanol for ultrasonic extraction in the 2 nd time, extracting for half an hour, carrying out suction filtration on the extract liquor, and taking a clear liquid 2. And 3, adding 3 times of ethanol for ultrasonic extraction in the 3 rd time, extracting for half an hour, carrying out suction filtration on the extract liquor, and taking a clear liquid 3. And mixing the clear liquids 1, 2 and 3 to obtain the honeysuckle extracting solution. The ultrasonic frequency of the ultrasonic extraction is 70 KHz.
Step two: preparation of viscose stock solution
The viscose stock solution is prepared by the processes of dipping → pressing → yellowing → dissolving → filtering → defoaming and the like of the mixture of wood pulp and bamboo pulp. The content (mass fraction) of methyl fiber in the mixture of wood pulp and bamboo pulp is not less than 95%, and the content (mass fraction) of methyl fiber in the viscose stock solution is 8.8%.
Step three: preparation of blended spinning dope and spinning formation
Uniformly mixing a mint extracting solution with the mass fraction of 7% of the content of alpha fibers in a viscose stock solution and a honeysuckle extracting solution with the mass fraction of 13% of the content of the alpha fibers in the viscose stock solution, standing for defoaming, adding the mixture into the viscose stock solution in an injection stage before spinning, feeding the mixture into a 49-51 ℃ coagulating bath through a gooseneck and a spinneret, wherein the coagulating bath consists of 110-120 g/L sulfuric acid, 330-360 g/L sodium sulfate and 10.5 +/-0.5 g/L zinc sulfate, the spinning speed is 36-40 m/min, and then performing processes of desulfurization, bleaching, oiling, drying and the like to obtain a fiber product with cooling and antibacterial effects.
The fiber prepared in this example 3 contains functional components of mint and honeysuckle, and has an inhibition rate of 94.5% for staphylococcus aureus, 94.8% for escherichia coli, and 91.6% for hemolytic streptococcus. The surface temperature of the fiber of the present example was measured to be 25 ℃ after being exposed to constant temperature light at 28 ℃ for 30 minutes under the condition of 20 ℃ of the surface temperature of the fiber.
Comparative example 1
The method comprises the following steps: preparation of viscose stock solution
The wood pulp is processed by the processes of dipping → pressing → etiolation → dissolving → filtering → defoaming, etc. to obtain the viscose stoste.
Step two: spinning formation
And standing and defoaming the spinning stock solution for two hours, feeding the spinning stock solution into a 49-51 ℃ coagulating bath through a gooseneck of a spinning machine and a spinning nozzle, wherein the coagulating bath consists of 110-120 g/L sulfuric acid, 330-360 g/L sodium sulfate and 10.5 +/-0.5 g/L zinc sulfate, the spinning speed is 36-40 m/min, and then feeding the spinning stock solution into the processes of desulfurization, bleaching, oiling, drying and the like to obtain the common viscose fiber product.
The fiber prepared in comparative example 1 has an inhibition rate of 60.5% for staphylococcus aureus, an inhibition rate of 70.8% for escherichia coli, and an inhibition rate of 72.6% for hemolytic streptococcus. The comparative example was exposed to constant temperature of 28 ℃ for 30 minutes at a fiber surface temperature of 20 ℃ and then the fiber surface temperature was measured to be 28 ℃.
Comparative example 2
The cooling effect of the mint extract in the fiber is inspected, different from the embodiment 1-3, in the comparative example 2, the mint extract is added into the viscose stock solution according to 6% of the content of the alpha fibers in the viscose stock solution and is uniformly mixed (other steps are the same as the embodiment 1-3), standing and defoaming are carried out, the mint extract is added into the viscose stock solution in the injection stage before spinning, the mixture enters a solidification bath at 49-51 ℃ through a gooseneck tube and a spinning nozzle, the solidification bath consists of 110-120 g/L sulfuric acid, 330-360 g/L sodium sulfate and 10.5 +/-0.5 g/L zinc sulfate, the spinning speed is 36-40 m/min, and the fiber product with the cooling effect is obtained after desulfurization, bleaching, oiling, drying and other processes.
The fiber prepared in the comparative example 2 contains functional components of mint and has a cooling effect. The comparative example was exposed to constant temperature of 28 ℃ for 30 minutes at a fiber surface temperature of 20 ℃ and then the fiber surface temperature was measured to be 26 ℃.
Comparative example 3
Examining the bacteriostatic action of the honeysuckle extract in the fiber, which is different from that of examples 1-3, in the comparative example 3, only adding 13% of the content of the alpha fibers in the viscose stock solution into the viscose stock solution, uniformly mixing (other steps are the same as those of examples 1-3), standing, defoaming, adding the honeysuckle extract into the viscose stock solution in the injection stage before spinning, feeding the mixture into a 49-51 ℃ coagulating bath through a gooseneck tube and a spinning nozzle, wherein the coagulating bath consists of 110-120 g/L sulfuric acid, 330-360 g/L sodium sulfate and 10.5 +/-0.5 g/L zinc sulfate, the spinning speed is 36-40 m/min, and then performing desulfurization, bleaching, oiling, drying and other processes to obtain the fiber product with cool and bacteriostatic actions.
The fiber prepared in the comparative example 3 contains honeysuckle functional components, the inhibition rate on staphylococcus aureus is 90.5%, the inhibition rate on escherichia coli is 92.6%, and the inhibition rate on hemolytic streptococcus is 89.3%.
The results show that the mint extract and the honeysuckle extract are added into the viscose stoste in the embodiments 1 to 3, and the use amounts of the mint extract and the honeysuckle extract are adjusted, so that the cooling and bacteriostasis effects of the honeysuckle and the mint are mutually promoted, the inhibition rates of the prepared fibers on staphylococcus aureus, escherichia coli and hemolytic streptococcus are remarkably improved, and the fibers have cool hand feeling compared with common fibers under the illumination of 28-32 ℃. Compared with common fibers without the mint extract and the honeysuckle extract, the fibers prepared in the embodiments 1-3 of the invention have greatly improved inhibition rates on staphylococcus aureus, escherichia coli and hemolytic streptococcus, wherein the inhibition rates are improved from 60% and 70% to over 90%, and the surface temperature of the fibers is reduced from 28 ℃ to 25 ℃ after being illuminated for 30 minutes at a constant temperature of 28-32 ℃. In comparative examples 2 and 3 in which the mint extract or the honeysuckle extract is added alone, neither the bacteriostatic effect nor the cooling effect is better than that in examples 1 to 3 of the present invention, because the components of the two extracts do not affect each other, the two extracts do not react with each other after mixing, and the two extracts have good compatibility with the viscose stock solution, and can keep the original properties and effects of the two extracts at a higher level, and through a large number of related experiments on different drugs and dosages, the inventor finds that the mint, the honeysuckle and the corresponding dosages of the two extracts have mutually-promoting effects, that is, the two extracts generate synergistic effects when the corresponding dosages are added into the viscose stock solution to prepare fibers, so that the bacteriostatic effect and the cooling effect of the fibers are better than those of the fibers prepared by adding the corresponding extracts alone.
Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.
Claims (9)
1. A preparation method of regenerated cellulose fiber with cooling and bacteriostasis functions is characterized by comprising the following steps:
(1) respectively preparing a mint extracting solution and a honeysuckle extracting solution;
(2) preparing a viscose stock solution: treating pulp to obtain a viscose stock solution for spinning;
(3) preparing a spinning solution: mixing the mint extract and the honeysuckle extract to obtain a bacteriostatic composition of the plant extract, and adding the bacteriostatic composition into the viscose stock solution for blending to obtain a spinning stock solution; the adding amount of the mint extracting solution is 3-7% of the content of alpha cellulose in the viscose stock solution, and the adding amount of the honeysuckle extracting solution is 7-13% of the content of the alpha cellulose in the viscose stock solution;
(4) spinning: spinning according to a wet spinning process to obtain the regenerated cellulose fiber with the cooling and bacteriostatic functions.
2. The method for preparing regenerated cellulose fiber with cooling and bacteriostasis functions as claimed in claim 1, characterized in that in the step (1), the mint extracting solution is prepared by the following method: weighing a certain amount of mint, adding the mint into a pulverizer, pulverizing into powder, adding ethanol with the weight of 3 times of that of the mint powder, performing 1 st ultrasonic extraction with the ultrasonic frequency of 70KHz, and after performing ultrasonic treatment for 30min, transferring the extract into a clean centrifugal tube to obtain clear liquid 1; adding 3 times of ethanol into the rest mint powder after the 1 st ultrasonic extraction for 2 nd ultrasonic extraction, wherein the ultrasonic frequency is 70KHz, and transferring the extract into a clean centrifuge tube after ultrasonic treatment for 30min to obtain clear liquid 2; adding 3 times of ethanol into the rest mint powder after the 2 nd ultrasonic extraction for the 3 rd ultrasonic extraction, wherein the ultrasonic frequency is 70KHz, and transferring the extract into a clean centrifugal tube after ultrasonic treatment for 30min to obtain clear liquid 3; and combining the clear liquid 1, the clear liquid 2 and the clear liquid 3 to obtain the mint extract.
3. The preparation method of the regenerated cellulose fiber with cooling and bacteriostasis functions as claimed in claim 1, wherein in the step (1), a certain amount of honeysuckle is weighed, added into a pulverizer and pulverized into powder, ethanol with the weight 3 times of that of the honeysuckle powder is added for 1-time ultrasonic extraction, the ultrasonic frequency is 70KHz, and after 30min of ultrasonic treatment, the extract is transferred into a clean centrifugal tube to obtain clear liquid 1; adding 3 times of ethanol by weight into the remaining honeysuckle powder after the 1 st ultrasonic extraction for 2 nd ultrasonic extraction, wherein the ultrasonic frequency is 70KHz, and transferring the extract into a clean centrifuge tube after ultrasonic treatment for 30min to obtain clear liquid 2; adding 3 times of ethanol by weight into the remaining honeysuckle powder after the 2 nd ultrasonic extraction for 3 rd ultrasonic extraction, wherein the ultrasonic frequency is 70KHz, and after ultrasonic treatment is carried out for 30min, transferring the extract into a clean centrifugal tube to obtain clear liquid 3; and combining the clear liquid 1, the clear liquid 2 and the clear liquid 3 to obtain the honeysuckle extracting solution.
4. The method for preparing regenerated cellulose fiber with cooling and bacteriostasis functions as claimed in claim 1, characterized in that in the step (2), the pulp is selected from one or a mixture of two of wood pulp and bamboo pulp, the alpha fiber content of the pulp is not less than 95%, and the alpha fiber content of the viscose stock solution is 8.8%.
5. The method for preparing regenerated cellulose fiber with cooling and bacteriostasis functions as claimed in claim 1, wherein in the step (2), the treatment method comprises the following steps which are carried out in sequence: soaking, dissolving, aging, and filtering.
6. The preparation method of the regenerated cellulose fibers with cooling and bacteriostasis functions as claimed in claim 1, wherein in the step (2), the solid content of the viscose stock solution is 8-10%, and in the step (3), the solid content of the spinning stock solution is 8-11%.
7. The method for preparing regenerated cellulose fibers with cooling and bacteriostasis functions as claimed in claim 1, wherein in the step (3), the spinning solution is prepared by the following specific steps: mixing the mint extract according to 3-7% of the content of alpha fibers in the viscose stock solution with the honeysuckle extract according to 7-13% of the content of the alpha fibers in the viscose stock solution, uniformly mixing to obtain the bacteriostatic composition of the plant extract, and adding the bacteriostatic composition into the viscose stock solution.
8. The method for preparing regenerated cellulose fibers with cooling and bacteriostasis functions as claimed in any one of claims 1 to 7, wherein in the step (4), the wet spinning process is specifically as follows: and (2) after being metered by a metering pump, feeding the mixture into a 49-51 ℃ coagulating bath through a gooseneck and a spinning nozzle, wherein the coagulating bath consists of 110-120 g/L sulfuric acid, 330-360 g/L sodium sulfate and 10.5 +/-0.5 g/L zinc sulfate, the spinning speed is 36-40 m/min, and the mixture is subjected to desulfurization, bleaching, oiling and drying to obtain a finished fiber, so that the regenerated cellulose fiber with the cooling and bacteriostatic functions is obtained.
9. A regenerated cellulose fiber with cooling and bacteriostasis functions prepared by the preparation method of any one of claims 1 to 8.
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| CN111621863A (en) * | 2019-09-26 | 2020-09-04 | 苏州新民丝绸有限公司 | Processing technology of functional nano regenerated fiber |
| CN111118703A (en) * | 2019-11-28 | 2020-05-08 | 江苏悦达家纺有限公司 | Honeysuckle jacquard fabric and preparation method thereof |
| CN111155188B (en) * | 2020-02-26 | 2022-03-01 | 青岛邦特生态纺织科技有限公司 | High-performance warm ginger fiber and preparation method thereof |
| CN111172605B (en) * | 2020-02-26 | 2022-03-22 | 青岛邦特生态纺织科技有限公司 | High-quality ginger antibacterial fiber and preparation method thereof |
| CN114438795A (en) * | 2020-10-30 | 2022-05-06 | 上海唯革思生物科技有限公司 | Fruit extract leather and preparation method thereof |
| CN116180255A (en) * | 2021-08-20 | 2023-05-30 | 百事基材料（青岛）股份有限公司 | Viscose large biological fiber containing active ingredients of albizia julibrissin, olive, peppermint and lavender and preparation method thereof |
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