CN114369907B - Medical mask special non-woven fabric with antibacterial function - Google Patents
Medical mask special non-woven fabric with antibacterial function Download PDFInfo
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- 239000004745 nonwoven fabric Substances 0.000 title claims abstract description 28
- 230000000844 anti-bacterial effect Effects 0.000 title claims abstract description 20
- 244000166675 Cymbopogon nardus Species 0.000 claims abstract description 122
- 235000018791 Cymbopogon nardus Nutrition 0.000 claims abstract description 122
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims abstract description 52
- 229920000747 poly(lactic acid) Polymers 0.000 claims abstract description 28
- 239000004626 polylactic acid Substances 0.000 claims abstract description 28
- 238000000034 method Methods 0.000 claims abstract description 25
- 238000001556 precipitation Methods 0.000 claims abstract description 22
- 238000007731 hot pressing Methods 0.000 claims abstract description 16
- 238000002074 melt spinning Methods 0.000 claims abstract description 12
- 238000013329 compounding Methods 0.000 claims abstract description 8
- 238000003809 water extraction Methods 0.000 claims abstract description 7
- 230000003385 bacteriostatic effect Effects 0.000 claims abstract 5
- YMWUJEATGCHHMB-UHFFFAOYSA-N Dichloromethane Chemical compound ClCCl YMWUJEATGCHHMB-UHFFFAOYSA-N 0.000 claims description 30
- 239000002002 slurry Substances 0.000 claims description 20
- 230000006837 decompression Effects 0.000 claims description 15
- 239000002244 precipitate Substances 0.000 claims description 15
- HEDRZPFGACZZDS-UHFFFAOYSA-N Chloroform Chemical compound ClC(Cl)Cl HEDRZPFGACZZDS-UHFFFAOYSA-N 0.000 claims description 10
- LRHPLDYGYMQRHN-UHFFFAOYSA-N N-Butanol Chemical compound CCCCO LRHPLDYGYMQRHN-UHFFFAOYSA-N 0.000 claims description 10
- 239000008367 deionised water Substances 0.000 claims description 10
- 229910021641 deionized water Inorganic materials 0.000 claims description 10
- 238000009210 therapy by ultrasound Methods 0.000 claims description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 10
- 239000003153 chemical reaction reagent Substances 0.000 claims description 9
- 238000001914 filtration Methods 0.000 claims description 6
- 238000004140 cleaning Methods 0.000 claims description 5
- 239000005457 ice water Substances 0.000 claims description 5
- 238000002360 preparation method Methods 0.000 claims description 5
- 239000002904 solvent Substances 0.000 claims description 5
- 238000003756 stirring Methods 0.000 claims description 5
- 150000001875 compounds Chemical class 0.000 claims description 4
- 239000000243 solution Substances 0.000 claims 7
- 239000011259 mixed solution Substances 0.000 claims 3
- 238000002156 mixing Methods 0.000 claims 3
- 239000012460 protein solution Substances 0.000 claims 3
- 238000001035 drying Methods 0.000 claims 1
- 238000005360 mashing Methods 0.000 claims 1
- 239000000203 mixture Substances 0.000 description 24
- 239000012141 concentrate Substances 0.000 description 18
- 230000003544 deproteinization Effects 0.000 description 16
- 239000007788 liquid Substances 0.000 description 9
- 230000003068 static effect Effects 0.000 description 8
- 238000002844 melting Methods 0.000 description 5
- 230000008018 melting Effects 0.000 description 5
- 238000009987 spinning Methods 0.000 description 5
- 241000894006 Bacteria Species 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 239000004744 fabric Substances 0.000 description 2
- 239000000835 fiber Substances 0.000 description 2
- 238000005096 rolling process Methods 0.000 description 2
- 239000004743 Polypropylene Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 231100000344 non-irritating Toxicity 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- 239000008188 pellet Substances 0.000 description 1
- -1 polypropylene Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
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- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H3/00—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length
- D04H3/005—Synthetic yarns or filaments
- D04H3/009—Condensation or reaction polymers
- D04H3/011—Polyesters
-
- A—HUMAN NECESSITIES
- A41—WEARING APPAREL
- A41D—OUTERWEAR; PROTECTIVE GARMENTS; ACCESSORIES
- A41D31/00—Materials specially adapted for outerwear
- A41D31/04—Materials specially adapted for outerwear characterised by special function or use
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F1/00—General methods for the manufacture of artificial filaments or the like
- D01F1/02—Addition of substances to the spinning solution or to the melt
- D01F1/10—Other agents for modifying properties
- D01F1/103—Agents inhibiting growth of microorganisms
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F6/00—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof
- D01F6/88—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from mixtures of polycondensation products as major constituent with other polymers or low-molecular-weight compounds
- D01F6/92—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from mixtures of polycondensation products as major constituent with other polymers or low-molecular-weight compounds of polyesters
-
- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H3/00—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length
- D04H3/08—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of strengthening or consolidating
- D04H3/14—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of strengthening or consolidating with bonds between thermoplastic yarns or filaments produced by welding
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/30—Against vector-borne diseases, e.g. mosquito-borne, fly-borne, tick-borne or waterborne diseases whose impact is exacerbated by climate change
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- Engineering & Computer Science (AREA)
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- Chemical & Material Sciences (AREA)
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Abstract
Description
技术领域technical field
本发明涉及抑菌无纺布领域，具体涉及一种具有抑菌功能的医用口罩专用无纺布。The invention relates to the field of antibacterial nonwoven fabrics, in particular to a special nonwoven fabric for medical masks with antibacterial function.
背景技术Background technique
无纺布，又称不织布，是由定向的或随机的纤维而构成，因具有布的外观与某些性能而称其为布，无纺布具有防潮、透气、柔韧、质轻、不助燃、容易分解、无毒无刺激性、色彩丰富、价格低廉、可循环再用等特点，如多采用聚丙烯粒料为原料，经高温熔融、喷丝、铺纲、热压卷取连续一步法生产而成，无纺布没有经纬线，剪裁和缝纫都非常方便，而且质轻容易定型，深受手工爱好者的喜爱，因为它是一种不需要纺纱织布而形成的织物，只是将纺织短纤维或者长丝进行定向或随机排列，形成纤网结构，然后采用机械、热粘或化学等方法加固而成。Non-woven fabric, also known as non-woven fabric, is composed of directional or random fibers. It is called cloth because of its appearance and certain properties. Non-woven fabric has moisture-proof, breathable, flexible, light weight, non-combustible, Easy to decompose, non-toxic and non-irritating, rich in color, low in price, and recyclable. For example, polypropylene pellets are mostly used as raw materials, and they are produced by continuous one-step process of high-temperature melting, spinning, laying, and hot-pressing coiling. The non-woven fabric has no warp and weft, it is very convenient to cut and sew, and it is light and easy to shape. It is very popular among handicraft lovers because it is a kind of fabric that does not need to be spun and weaved. Short fibers or filaments are oriented or randomly arranged to form a web structure, and then reinforced by mechanical, thermal bonding or chemical methods.
市场上的医用口罩无纺布在长时间的使用后，由于本身抑菌性较差，导致残留大量的细菌，很容易产生异味且损害健康。After a long period of use, the non-woven fabrics for medical masks on the market have poor antibacterial properties, resulting in a large amount of bacteria remaining, which is prone to odor and damage to health.
发明内容Contents of the invention
针对市场上的医用口罩无纺布在长时间的使用后，由于本身具有吸附性且抑菌性较差，导致残留大量的细菌，很容易产生异味且损害健康的问题，本发明的目的是提供一种具有抑菌功能的医用口罩专用无纺布。Aiming at the problem that the non-woven fabrics for medical masks on the market have absorptive properties and poor antibacterial properties after long-term use, resulting in a large number of bacteria remaining, which are easy to produce peculiar smell and damage health. The purpose of the present invention is to provide A special non-woven fabric for medical masks with antibacterial function.
本发明的目的采用以下技术方案来实现：The object of the present invention adopts following technical scheme to realize:
一种具有抑菌功能的医用口罩专用无纺布，是使用香茅提取物与聚乳酸复合后，再经过熔融喷丝和热压成卷后制备得到。A special non-woven fabric for medical masks with antibacterial function is prepared by compounding citronella extract and polylactic acid, and then melt-spinning and hot-pressing into rolls.
优选地，所述香茅提取物是使用香茅叶通过水提醇沉法提取得到。Preferably, the citronella extract is obtained by extracting citronella leaves through water extraction and alcohol precipitation.
优选地，所述香茅提取物的制备方法为：Preferably, the preparation method of the citronella extract is:
S1.将新鲜的香茅叶清洗干净后，捣碎成浆液，得到香茅叶浆液；S1. After cleaning the fresh citronella leaves, mash them into a slurry to obtain the citronella leaf slurry;
S2.将香茅叶浆液与去离子水混合，置于常温条件下超声处理，得到香茅叶混液；S2. Mix the citronella leaf slurry with deionized water, and place it under normal temperature for ultrasonic treatment to obtain the citronella leaf mixture;
S3.将香茅叶混液滤除沉淀后，减压浓缩，得到香茅叶减压浓缩液；S3. After filtering the citronella leaf mixture to remove the precipitate, concentrate under reduced pressure to obtain a citronella leaf decompression concentrate;
S4.将香茅叶减压浓缩液使用Sevage法脱蛋白后，滤除沉淀，得到香茅叶脱蛋白液；S4. After deproteinizing the citronella leaf decompression concentrate using the Sevage method, filter the precipitate to obtain the citronella leaf deproteinization liquid;
S5.将香茅叶脱蛋白液与乙醇溶液混合，搅拌混合均匀后，静置醇沉，离心取下层沉淀，干燥处理后，得到香茅提取物。S5. Mix the citronella leaf deproteinization solution with the ethanol solution, stir and mix evenly, let stand for alcohol precipitation, centrifuge to remove the lower layer precipitate, and dry to obtain the citronella extract.
优选地，所述S2中，香茅叶浆液与去离子水的质量比为1:1.5～2，超声处理的时间为0.2～0.5h。Preferably, in the S2, the mass ratio of the citronella leaf slurry to the deionized water is 1:1.5-2, and the ultrasonic treatment time is 0.2-0.5 h.
优选地，所述S3中，香茅叶减压浓缩液的体积是香茅叶混液体积的1/3～1/2。Preferably, in said S3, the volume of the concentrated citronella leaf decompressed liquid is 1/3-1/2 of the volume of the citronella leaf mixed liquid.
优选地，所述S4中，Sevage法脱蛋白使用的Sevage试剂为氯仿与正丁醇按照体积比为5:1混合；Sevage试剂的加入量是香茅叶减压浓缩液体积的1/5～1/4。Preferably, in said S4, the Sevage reagent used for deproteinization by the Sevage method is a mixture of chloroform and n-butanol at a volume ratio of 5:1; 1/4.
优选地，所述S5中，乙醇溶液的质量分数大于或等于90％，香茅叶脱蛋白液与乙醇溶液的体积比为1:3～5。Preferably, in the S5, the mass fraction of the ethanol solution is greater than or equal to 90%, and the volume ratio of the citronella leaf deproteinization solution to the ethanol solution is 1:3-5.
优选地，所述S5中，静置醇沉是在冰水浴条件下进行，静置醇沉时间为8～12h。Preferably, in said S5, the static alcohol precipitation is carried out under the condition of an ice-water bath, and the static alcohol precipitation time is 8-12 hours.
优选地，所述香茅提取物与聚乳酸的复合方法为：Preferably, the composite method of the citronella extract and polylactic acid is:
将聚乳酸溶于二氯甲烷中，加入香茅提取物，减压除去溶剂，得到香茅提取物与聚乳酸的复合物。Polylactic acid was dissolved in dichloromethane, citronella extract was added, and the solvent was removed under reduced pressure to obtain a complex of citronella extract and polylactic acid.
优选地，所述聚乳酸、香茅提取物与二氯甲烷的质量比为1:0.15～0.32:5～10。Preferably, the mass ratio of polylactic acid, citronella extract and methylene chloride is 1:0.15-0.32:5-10.
优选地，所述熔融喷丝的过程中，熔融的温度为170～185℃，所述喷丝的速度为550～650m/min。Preferably, during the melt spinning process, the melting temperature is 170-185° C., and the spinning speed is 550-650 m/min.
优选地，所述热压成卷的过程中，热压的温度为90～120℃，所述成卷的速度为5～20m/min。Preferably, during the process of hot-pressing into rolls, the temperature of hot-pressing is 90-120° C., and the speed of roll-forming is 5-20 m/min.
本发明的有益效果为：The beneficial effects of the present invention are:
本发明制备了一种具有抑菌功能的医用口罩专用无纺布，是使用香茅提取物与聚乳酸复合后经过熔融喷丝和热压成卷后制备得到。The invention prepares a special non-woven fabric for medical masks with antibacterial function, which is prepared by compounding citronella extract and polylactic acid, melt spinning and hot pressing into rolls.
由于香茅本身具有较好的抗菌作用，本发明将其使用水提醇沉法进行提取，最终得到了香茅提取物，本发明将香茅提取物与聚乳酸进行溶解复合，形成复合产物，然后再经过熔融喷丝工艺制备得到了具有天然抑菌功能的医用口罩无纺布。Since citronella itself has a good antibacterial effect, the present invention uses water extraction and alcohol precipitation method to extract it, and finally obtains citronella extract. In the present invention, the citronella extract and polylactic acid are dissolved and compounded to form a composite product. Then, the non-woven fabric for medical masks with natural antibacterial function was prepared through the melt-spinning process.
具体实施方式Detailed ways
下面结合以下实施例对本发明作进一步描述。The present invention will be further described below in conjunction with the following examples.
实施例1Example 1
一种具有抑菌功能的医用口罩专用无纺布，是使用香茅提取物与聚乳酸复合后，再经过熔融喷丝和热压成卷后制备得到。所述香茅提取物是使用香茅叶通过水提醇沉法提取得到。对该无纺布检测后，抗菌性能够高于90％。A special non-woven fabric for medical masks with antibacterial function is prepared by compounding citronella extract and polylactic acid, and then melt-spinning and hot-pressing into rolls. The citronella extract is obtained by extracting citronella leaves through water extraction and alcohol precipitation. After testing the non-woven fabric, the antibacterial property can be higher than 90%.
所述香茅提取物的制备方法为：The preparation method of described citronella extract is:
S1.将新鲜的香茅叶清洗干净后，捣碎成浆液，得到香茅叶浆液；S1. After cleaning the fresh citronella leaves, mash them into a slurry to obtain the citronella leaf slurry;
S2.将香茅叶浆液与去离子水混合，置于常温条件下超声处理，得到香茅叶混液；S2. Mix the citronella leaf slurry with deionized water, and place it under normal temperature for ultrasonic treatment to obtain the citronella leaf mixture;
S3.将香茅叶混液滤除沉淀后，减压浓缩，得到香茅叶减压浓缩液；S3. After filtering the citronella leaf mixture to remove the precipitate, concentrate under reduced pressure to obtain a citronella leaf decompression concentrate;
S4.将香茅叶减压浓缩液使用Sevage法脱蛋白后，滤除沉淀，得到香茅叶脱蛋白液；S4. After deproteinizing the citronella leaf decompression concentrate using the Sevage method, filter the precipitate to obtain the citronella leaf deproteinization liquid;
S5.将香茅叶脱蛋白液与乙醇溶液混合，搅拌混合均匀后，静置醇沉，离心取下层沉淀，干燥处理后，得到香茅提取物。S5. Mix the citronella leaf deproteinization solution with the ethanol solution, stir and mix evenly, let stand for alcohol precipitation, centrifuge to remove the lower layer precipitate, and dry to obtain the citronella extract.
所述S2中，香茅叶浆液与去离子水的质量比为1:1.5，超声处理的时间为0.2h。In said S2, the mass ratio of citronella leaf slurry to deionized water is 1:1.5, and the ultrasonic treatment time is 0.2h.
所述S3中，香茅叶减压浓缩液的体积是香茅叶混液体积的1/3～1/2。In said S3, the volume of the citronella leaf decompression concentrate is 1/3-1/2 of the volume of the citronella leaf mixed liquid.
所述S4中，Sevage法脱蛋白使用的Sevage试剂为氯仿与正丁醇按照体积比为5:1混合；Sevage试剂的加入量是香茅叶减压浓缩液体积的1/5～1/4。In said S4, the Sevage reagent used for deproteinization by the Sevage method is a mixture of chloroform and n-butanol at a volume ratio of 5:1; the amount of the Sevage reagent added is 1/5 to 1/4 of the volume of the citronella leaf decompression concentrate .
所述S5中，乙醇溶液的质量分数大于或等于90％，香茅叶脱蛋白液与乙醇溶液的体积比为1:3。In said S5, the mass fraction of the ethanol solution is greater than or equal to 90%, and the volume ratio of the citronella leaf deproteinization solution to the ethanol solution is 1:3.
所述S5中，静置醇沉是在冰水浴条件下进行，静置醇沉时间为8h。In the S5, the static alcohol precipitation is carried out under the condition of an ice-water bath, and the static alcohol precipitation time is 8h.
所述香茅提取物与聚乳酸的复合方法为：The compound method of described citronella extract and polylactic acid is:
将聚乳酸溶于二氯甲烷中，加入香茅提取物，减压除去溶剂，得到香茅提取物与聚乳酸的复合物。Polylactic acid was dissolved in dichloromethane, citronella extract was added, and the solvent was removed under reduced pressure to obtain a complex of citronella extract and polylactic acid.
所述聚乳酸、香茅提取物与二氯甲烷的质量比为1:0.15:5。The mass ratio of the polylactic acid, citronella extract and methylene chloride is 1:0.15:5.
所述熔融喷丝的过程中，熔融的温度为170℃，所述喷丝的速度为550m/min。During the melt spinning process, the melting temperature is 170° C., and the spinning speed is 550 m/min.
所述热压成卷的过程中，热压的温度为90℃，所述成卷的速度为5m/min。During the hot-pressing process, the hot-pressing temperature is 90° C., and the rolling speed is 5 m/min.
实施例2Example 2
一种具有抑菌功能的医用口罩专用无纺布，是使用香茅提取物与聚乳酸复合后，再经过熔融喷丝和热压成卷后制备得到。所述香茅提取物是使用香茅叶通过水提醇沉法提取得到。对该无纺布检测后，抗菌性能够高于90％。A special non-woven fabric for medical masks with antibacterial function is prepared by compounding citronella extract and polylactic acid, and then melt-spinning and hot-pressing into rolls. The citronella extract is obtained by extracting citronella leaves through water extraction and alcohol precipitation. After testing the non-woven fabric, the antibacterial property can be higher than 90%.
所述香茅提取物的制备方法为：The preparation method of described citronella extract is:
S1.将新鲜的香茅叶清洗干净后，捣碎成浆液，得到香茅叶浆液；S1. After cleaning the fresh citronella leaves, mash them into a slurry to obtain the citronella leaf slurry;
S2.将香茅叶浆液与去离子水混合，置于常温条件下超声处理，得到香茅叶混液；S2. Mix the citronella leaf slurry with deionized water, and place it under normal temperature for ultrasonic treatment to obtain the citronella leaf mixture;
S3.将香茅叶混液滤除沉淀后，减压浓缩，得到香茅叶减压浓缩液；S3. After filtering the citronella leaf mixture to remove the precipitate, concentrate under reduced pressure to obtain a citronella leaf decompression concentrate;
S4.将香茅叶减压浓缩液使用Sevage法脱蛋白后，滤除沉淀，得到香茅叶脱蛋白液；S4. After deproteinizing the citronella leaf decompression concentrate using the Sevage method, filter the precipitate to obtain the citronella leaf deproteinization liquid;
S5.将香茅叶脱蛋白液与乙醇溶液混合，搅拌混合均匀后，静置醇沉，离心取下层沉淀，干燥处理后，得到香茅提取物。S5. Mix the citronella leaf deproteinization solution with the ethanol solution, stir and mix evenly, let stand for alcohol precipitation, centrifuge to remove the lower layer precipitate, and dry to obtain the citronella extract.
所述S2中，香茅叶浆液与去离子水的质量比为1:1.8，超声处理的时间为0.3h。In said S2, the mass ratio of citronella leaf slurry to deionized water is 1:1.8, and the ultrasonic treatment time is 0.3h.
所述S3中，香茅叶减压浓缩液的体积是香茅叶混液体积的1/3～1/2。In said S3, the volume of the citronella leaf decompression concentrate is 1/3-1/2 of the volume of the citronella leaf mixed liquid.
所述S4中，Sevage法脱蛋白使用的Sevage试剂为氯仿与正丁醇按照体积比为5:1混合；Sevage试剂的加入量是香茅叶减压浓缩液体积的1/5～1/4。In said S4, the Sevage reagent used for deproteinization by the Sevage method is a mixture of chloroform and n-butanol at a volume ratio of 5:1; the amount of the Sevage reagent added is 1/5 to 1/4 of the volume of the citronella leaf decompression concentrate .
所述S5中，乙醇溶液的质量分数大于或等于90％，香茅叶脱蛋白液与乙醇溶液的体积比为1:3～5。In said S5, the mass fraction of the ethanol solution is greater than or equal to 90%, and the volume ratio of the citronella leaf deproteinization solution to the ethanol solution is 1:3-5.
所述S5中，静置醇沉是在冰水浴条件下进行，静置醇沉时间为10h。In said S5, the static alcohol precipitation is carried out under the condition of ice water bath, and the static alcohol precipitation time is 10h.
所述香茅提取物与聚乳酸的复合方法为：The compound method of described citronella extract and polylactic acid is:
将聚乳酸溶于二氯甲烷中，加入香茅提取物，减压除去溶剂，得到香茅提取物与聚乳酸的复合物。Polylactic acid was dissolved in dichloromethane, citronella extract was added, and the solvent was removed under reduced pressure to obtain a complex of citronella extract and polylactic acid.
所述聚乳酸、香茅提取物与二氯甲烷的质量比为1:0.24:8。The mass ratio of polylactic acid, citronella extract and methylene chloride is 1:0.24:8.
所述熔融喷丝的过程中，熔融的温度为175℃，所述喷丝的速度为600m/min。During the melt spinning process, the melting temperature is 175° C., and the spinning speed is 600 m/min.
所述热压成卷的过程中，热压的温度为100℃，所述成卷的速度为15m/min。In the process of hot-pressing into rolls, the temperature of hot-pressing is 100° C., and the speed of roll-forming is 15 m/min.
实施例3Example 3
一种具有抑菌功能的医用口罩专用无纺布，是使用香茅提取物与聚乳酸复合后，再经过熔融喷丝和热压成卷后制备得到。所述香茅提取物是使用香茅叶通过水提醇沉法提取得到。对该无纺布检测后，抗菌性能够高于90％。A special non-woven fabric for medical masks with antibacterial function is prepared by compounding citronella extract and polylactic acid, and then melt-spinning and hot-pressing into rolls. The citronella extract is obtained by extracting citronella leaves through water extraction and alcohol precipitation. After testing the non-woven fabric, the antibacterial property can be higher than 90%.
所述香茅提取物的制备方法为：The preparation method of described citronella extract is:
S1.将新鲜的香茅叶清洗干净后，捣碎成浆液，得到香茅叶浆液；S1. After cleaning the fresh citronella leaves, mash them into a slurry to obtain the citronella leaf slurry;
S2.将香茅叶浆液与去离子水混合，置于常温条件下超声处理，得到香茅叶混液；S2. Mix the citronella leaf slurry with deionized water, and place it under normal temperature for ultrasonic treatment to obtain the citronella leaf mixture;
S3.将香茅叶混液滤除沉淀后，减压浓缩，得到香茅叶减压浓缩液；S3. After filtering the citronella leaf mixture to remove the precipitate, concentrate under reduced pressure to obtain a citronella leaf decompression concentrate;
S4.将香茅叶减压浓缩液使用Sevage法脱蛋白后，滤除沉淀，得到香茅叶脱蛋白液；S4. After deproteinizing the citronella leaf decompression concentrate using the Sevage method, filter the precipitate to obtain the citronella leaf deproteinization liquid;
S5.将香茅叶脱蛋白液与乙醇溶液混合，搅拌混合均匀后，静置醇沉，离心取下层沉淀，干燥处理后，得到香茅提取物。S5. Mix the citronella leaf deproteinization solution with the ethanol solution, stir and mix evenly, let stand for alcohol precipitation, centrifuge to remove the lower layer precipitate, and dry to obtain the citronella extract.
所述S2中，香茅叶浆液与去离子水的质量比为1:2，超声处理的时间为0.5h。In said S2, the mass ratio of citronella leaf slurry to deionized water is 1:2, and the ultrasonic treatment time is 0.5h.
所述S3中，香茅叶减压浓缩液的体积是香茅叶混液体积的1/3～1/2。In said S3, the volume of the citronella leaf decompression concentrate is 1/3-1/2 of the volume of the citronella leaf mixed liquid.
所述S4中，Sevage法脱蛋白使用的Sevage试剂为氯仿与正丁醇按照体积比为5:1混合；Sevage试剂的加入量是香茅叶减压浓缩液体积的1/5～1/4。In said S4, the Sevage reagent used for deproteinization by the Sevage method is a mixture of chloroform and n-butanol at a volume ratio of 5:1; the amount of the Sevage reagent added is 1/5 to 1/4 of the volume of the citronella leaf decompression concentrate .
所述S5中，乙醇溶液的质量分数大于或等于90％，香茅叶脱蛋白液与乙醇溶液的体积比为1:5。In said S5, the mass fraction of the ethanol solution is greater than or equal to 90%, and the volume ratio of the citronella leaf deproteinization solution to the ethanol solution is 1:5.
所述S5中，静置醇沉是在冰水浴条件下进行，静置醇沉时间为12h。In said S5, the static alcohol precipitation is carried out under the condition of ice-water bath, and the static alcohol precipitation time is 12h.
所述香茅提取物与聚乳酸的复合方法为：The compound method of described citronella extract and polylactic acid is:
将聚乳酸溶于二氯甲烷中，加入香茅提取物，减压除去溶剂，得到香茅提取物与聚乳酸的复合物。Polylactic acid was dissolved in dichloromethane, citronella extract was added, and the solvent was removed under reduced pressure to obtain a complex of citronella extract and polylactic acid.
所述聚乳酸、香茅提取物与二氯甲烷的质量比为1:0.32:10。The mass ratio of polylactic acid, citronella extract and methylene chloride is 1:0.32:10.
所述熔融喷丝的过程中，熔融的温度为185℃，所述喷丝的速度为650m/min。During the melt spinning process, the melting temperature is 185° C., and the spinning speed is 650 m/min.
所述热压成卷的过程中，热压的温度为120℃，所述成卷的速度为20m/min。During the hot-pressing process, the hot-pressing temperature is 120° C., and the rolling speed is 20 m/min.
最后应当说明的是，以上实施例仅用以说明本发明的技术方案，而非对本发明保护范围的限制，尽管参照较佳实施例对本发明作了详细地说明，本领域的普通技术人员应当理解，可以对本发明的技术方案进行修改或者等同替换，而不脱离本发明技术方案的实质和范围。Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than limiting the protection scope of the present invention, although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand , the technical solution of the present invention may be modified or equivalently replaced without departing from the spirit and scope of the technical solution of the present invention.
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| CN107012530A (en) * | 2017-05-12 | 2017-08-04 | 福建鑫森合纤科技有限公司 | A kind of mosquito repellent nylon-6 fiber and preparation method thereof |
| CN111139544A (en) * | 2020-01-19 | 2020-05-12 | 青岛正鸿祥贸易有限公司 | Preparation method of lemongrass fiber |
| CN112080849A (en) * | 2019-06-14 | 2020-12-15 | 欣龙控股（集团）股份有限公司 | Wormwood antibacterial melt-blown nonwoven material and preparation method thereof |
| CN112962168A (en) * | 2021-02-05 | 2021-06-15 | 刘德生 | Antibacterial and anti-mite functional fabric |
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| CN107012530A (en) * | 2017-05-12 | 2017-08-04 | 福建鑫森合纤科技有限公司 | A kind of mosquito repellent nylon-6 fiber and preparation method thereof |
| CN112080849A (en) * | 2019-06-14 | 2020-12-15 | 欣龙控股（集团）股份有限公司 | Wormwood antibacterial melt-blown nonwoven material and preparation method thereof |
| CN111139544A (en) * | 2020-01-19 | 2020-05-12 | 青岛正鸿祥贸易有限公司 | Preparation method of lemongrass fiber |
| CN112962168A (en) * | 2021-02-05 | 2021-06-15 | 刘德生 | Antibacterial and anti-mite functional fabric |
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