CN101892586B - Method for modifying medical cotton gauze - Google Patents
Method for modifying medical cotton gauze Download PDFInfo
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- CN101892586B CN101892586B CN2010102212035A CN201010221203A CN101892586B CN 101892586 B CN101892586 B CN 101892586B CN 2010102212035 A CN2010102212035 A CN 2010102212035A CN 201010221203 A CN201010221203 A CN 201010221203A CN 101892586 B CN101892586 B CN 101892586B
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- cotton gauze
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Abstract
The invention relates to a physical-chemical method for modifying ordinary medical degreased cotton gauze, which aims to improve the adsorption property and antibacterial property of the medical cotton gauze. The method mainly comprises the following technical steps of: degreasing the cotton gauze; swelling the degreased cotton gauze with high-concentration caustic soda; washing the swollen cotton gauze with hot water; neutralizing the washed cotton gauze with an acid; washing the neutralized cotton gauze with cold water; performing antibiotic finish on the washed cotton gauze with a pomegranate rind extract serving as a natural antibacterial agent; refrigerating the treated cotton gauze at a low temperature; and performing freeze drying on the refrigerated product. After loose cotton fiber is swollen by concentrated caustic soda solution (mass percent concentration is between 20 and 28 percent), gaps in the fiber are increased and enlarged, and tight macromolecules become loose, so that antibacterial active ingredients in the pomegranate rind extract which is safe, nontoxic and low-cost can be adsorbed on the cotton fiber, and the antibacterial property of the cotton gauze is improved. Drying is performed by freeze drying technology instead of the conventional drying or air drying, so that gaps formed in the swelling and refrigerating processes of the cotton fiber can be kept fully, and the adsorption property of the cotton fiber is improved.
Description
Technical field
The present invention relates to a kind of method for modifying medical cotton gauze, especially relate to a kind of absorption of common cotton hospital gauze, method of modifying of anti-microbial property of improving.Belong to natural fabric modification technology field.
Background technology
Antibiotic, the absorption property that improve common medical cotton gauze reduce wound infection, accelerating wound.Patent of invention (publication number CN1201696) relates to the processing method of a kind of antibiotic, hemostasis and wound adhesion medical dressing, and it is that absorbent gauze is accomplished through pickling degraded, grafting etherification reaction, neutralization, washing, dipping antiseptic and steam seasoning treatment and other steps.Patent of invention (publication number: CN1348819) relate to freezing absorbant hemostatic cotton and preparation method thereof, it be with the natural silk fiber after the carboxymethyl cellulose processing, form the stanch fibre fabric; Use deionized water dissolving then; Sonicated, in the pan tank type die, vibration shakes up; In vacuum refrigerating machine, carry out freeze drying, then selected, cutting, packaging sterilizing.
Freeze drying (abbreviation freeze-drying) is exactly the material that contains large quantity of moisture; Lower the temperature in advance and be frozen into solid; Under the condition of vacuum, make water vapour directly from solid, distil then, and material itself is stayed in ice shelf that freezes, thereby made dried product keep its original form.In cryodesiccated process, the solid composition is being supported by the black ice on its seat, when the ice distillation; To in the surplus materials of drying, stay hole, therefore, the material after the freeze drying is loose porous; Be spongy, add suction rapidly behind the water, almost recover original proterties immediately; Be that rehydration is good, and traditional drying means can cause the material shrinkage, destroy cell.At present, freeze drying technology is used widely in food service industry.
Cotton fiber is a cellulose fibre, contains the hydrophilic radical hydrogen bond in the big molecule, has good moisture pick-up properties; Regain is about 8.5% under standard temperature, damp condition; Ungrease treatment can improve the hydrophily and the adsorptivity of cotton fiber slightly, and therefore, present hospital gauze all passes through ungrease treatment.With water is swelling agent, and the cotton fiber diameter expansion rate after wetting is 20-30%, and the sectional area expansion rate reaches 40-42%, but the cotton fiber behind the water swollen restores to the original state again through common dry its diameter of back and cross section.For improving the gloss of cotton fiber goods; Extensively adopt cotton fiber swelling agent concentrated caustic solution that cotton fiber or fiber assembly are put in order under certain tension force at present, make cotton fiber that irreversible violent swelling take place, the cross section of cotton fiber changes circle into by flat kidney shape; Vertically change bent the disappearance; Become smooth cylinder, light is well-regulated reflection, thereby gloss improves.
Granatum is a kind of important traditional Chinese medicine, and the main chemical compositions pomegranate glycosides (punicalagin) (content reaches 8.24%) of granatum promptly is the main pigment composition of granatum, also is main active constituents of medicine, and soluble in water.In vitro test shows that the granatum water decoction all has killing action to staphylococcus aureus, proteus, corynebacterium diphtheriae; Typhoid fever and paratyphoid, comma bacillus, Pseudomonas aeruginosa, shigella dysenteriae, tubercle bacillus etc. all there is the obvious suppression effect; The various skin fungi there is inhibitory action in various degree, so blue formula trichobacteria, yellow trichobacteria, barber's itch trichobacteria, trichophyton ferrugium, Du's big belly formula sporidiole bacteria difficult to understand, acrothesium floccosum etc.Edible, medicinal and ornamental value that pomegranate has; Extensively cultivated in recent years, mainly be distributed in Hebei, Henan, Shandong, Jiangsu, Anhui, Zhejiang, Jiangxi, Fujian, Taiwan, Hunan, Hubei, Guangdong, Guangxi, Guizhou, Sichuan etc. and economize (autonomous region).Granatum with antibacterial action is an agricultural by product, and cost is low, and is without any side effects.(application number: 201010164675.1) preparation has health care quilted stockings antibiotic, deodorization functions to patent of invention based on granatum.
Summary of the invention
The present invention is intended to adopt physics, chemical method that common degreasing cotton gauze is carried out modification, with its adsorptivity of further raising, increase antibiotic property.In order to achieve the above object, the modified technique flow process of the present invention's employing is following: degreasing cotton gauze → high concentration caustic soda swollen processing → hot wash → acid neutralization → cold water washing → employing natural antibacterial agent pomegranate rind extract carries out antibiotic finish → cryogenic freezing → freeze-drying.Common medical cotton gauze is after this method modification, and absorption property, antibacterial action improve, and can be widely used in all kinds of wounds.
Each step concrete grammar and the effect as follows:
The first step: high concentration caustic soda swollen is handled
The present invention is to be swelling agent with the high concentration soda bath, under the lax condition of degreasing cotton gauze, soaks into.High concentration caustic soda swollen treatment process is: with cotton gauze quality 15-25 concentrated caustic solution doubly swollen cotton fiber at normal temperatures, concentrated caustic solution concentration 20-28% (mass percent), processing time 10-30min.Lax cotton fiber through concentrated caustic solution swollen after, degree of crystallinity reduces, the fibre section form is circular by kidney deformation, slit, pore quantity increase and size becomes big in the fiber, between the big molecule by closely becoming loose.
Second step: hot wash
Adopt 30 ℃ of-50 ℃ of warm water that cotton gauze is washed, to remove residual a large amount of caustic soda on the gauze.
The 3rd step: acetic acid neutralization
The employing mass percent is that the acetic acid weak solution of 1-2% is carried out pickling to cotton gauze, with the residual alkali that neutralizes.
The 4th step: cold water washing
Adopt cold water to continue washing for several times, make cotton gauze neither contain also alkali-free of acid.
The 5th step: adopt the natural antibacterial agent pomegranate rind extract to carry out antibiotic finish
Granatum antiseptic method for distilling of the present invention is with antibiotic, the deodorization health quilted stockings (application number: 201010164675.1) of patent of invention based on the traditional Chinese medicine granatum.
Antibacterial finishing process is following: the pomegranate rind extract consumption is the 1-3% of cotton gauze quality, bath raio 1: 20, treatment temperature 50-80 ℃, processing time 1-2h.Cotton gauze short texture through swollen helps the antibacterial activity composition in the pomegranate rind extract to be adsorbed onto on the cotton fiber, improves the antibiotic property of cotton gauze.
The 6th step: cryogenic freezing
The cotton gauze that will pass through above processing places ultra low temperature freezer refrigerating chamber (temperature-25--80 ℃) to be refrigerated to the whole hardening of cotton gauze.
The 7th step: freeze-drying
Adopt the vacuum freeze-drying machine that the cotton gauze that freezes is fully carried out freeze-drying and handle, vacuum is-50 ℃ less than 20Pa, temperature in freeze-drying process.Adopt freeze drying technology dried rather than traditional oven dry or air-dry, with the space that abundant maintenance cotton fiber forms in swollen and refrigerating process, the absorption property of raising cotton fiber.
The specific embodiment
Specific embodiment 1:
The first step: high concentration caustic soda swollen is handled
With the concentrated caustic solution of 20 times of cotton gauze quality swollen cotton fiber at normal temperatures, soda bath concentration 25% (mass percent), processing time 15min.
Second step: hot wash
Adopt 40 ℃ of warm water that cotton gauze is washed, to remove residual a large amount of caustic soda on the gauze.
The 3rd step: acetic acid neutralization
Adopting mass percent is that 1.5% dilute acetic acid solution carries out pickling to cotton gauze, with the residual alkali that neutralizes.
The 4th step: cold water washing
Adopt cold water to continue washing for several times, make cotton gauze neither contain also alkali-free of acid.
The 5th step: adopt the natural antibacterial agent pomegranate rind extract to carry out antibiotic finish
Granatum antiseptic method for distilling of the present invention is with antibiotic, the deodorization health quilted stockings (application number: 201010164675.1) of patent of invention based on the traditional Chinese medicine granatum; The pomegranate rind extract consumption is 2% of a cotton gauze quality; bath raio 1: 20,60 ℃ of treatment temperatures, processing time 2h.
The 6th step: cryogenic freezing
The cotton gauze that will pass through above processing places ultra low temperature freezer refrigerating chamber (temperature-40 ℃) to be refrigerated to the whole hardening of cotton gauze.
The 7th step: freeze-drying
Adopt the vacuum freeze-drying machine that cotton gauze is carried out freeze-drying and handle, vacuum is less than 20Pa, and temperature-50 ℃ is to freeze-drying fully.
Specific embodiment 2:
The first step: high concentration caustic soda swollen is handled
With the concentrated caustic solution of 25 times of cotton gauze quality swollen cotton fiber at normal temperatures, concentrated caustic solution concentration 20% (mass percent), processing time 20min.
Second step: hot wash
Adopt 50 ℃ of warm water that cotton gauze is washed, to remove residual a large amount of caustic soda on the gauze.
The 3rd step: acetic acid neutralization
Adopting mass percent is that 1% acetic acid weak solution is carried out pickling to cotton gauze, with the residual alkali that neutralizes.
The 4th step: cold water washing
Adopt cold water to continue washing for several times, make cotton gauze neither contain also alkali-free of acid.
The 5th step: adopt the natural antibacterial agent pomegranate rind extract to carry out antibiotic finish
Granatum antiseptic method for distilling of the present invention is with antibiotic, the deodorization health quilted stockings (application number: 201010164675.1) of patent of invention based on the traditional Chinese medicine granatum; The pomegranate rind extract consumption is 3% of a cotton gauze quality; bath raio 1: 20,80 ℃ of treatment temperatures, processing time 1h.
The 6th step: cryogenic freezing
The cotton gauze that will pass through above processing places ultra low temperature freezer refrigerating chamber (temperature-60 ℃) to be refrigerated to the whole hardening of cotton gauze.
The 7th step: freeze-drying
Adopt the vacuum freeze-drying machine that cotton gauze is carried out freeze-drying and handle, vacuum is less than 20Pa, and temperature-50 ℃ is to freeze-drying fully.
Claims (1)
1. method that the method that adopts physics, chemofacies to combine is carried out modification to common medical absorbent cotton gauze; To improve the absorption property and the anti-microbial property of medical cotton gauze, the main processing step of this method is: degreasing cotton gauze → high concentration caustic soda swollen processing → hot wash → acid neutralization → cold water washing → employing natural antibacterial agent pomegranate rind extract carries out antibiotic finish → cryogenic freezing → freeze-drying; More than the concrete characteristic of each step following:
The first step: high concentration caustic soda swollen is handled
With the high concentration soda bath is swelling agent; Under the lax condition of degreasing cotton gauze, soak into; High concentration caustic soda swollen treatment process is: with cotton gauze quality 15-25 concentrated caustic solution doubly swollen cotton fiber at normal temperatures; Concentrated caustic solution quality percent concentration is 20-28%, processing time 10-30min;
Second step: hot wash
Adopt 30 ℃ of-50 ℃ of warm water that cotton gauze is washed, to remove residual a large amount of caustic soda on the gauze;
The 3rd step: acetic acid neutralization
The employing mass percent is that the acetic acid weak solution of 1-2% is carried out pickling to cotton gauze, with the residual alkali that neutralizes;
The 4th step: cold water washing
Adopt cold water to continue washing for several times, make cotton gauze neither contain also alkali-free of acid;
The 5th step: adopt the natural antibacterial agent pomegranate rind extract to carry out antibiotic finish
The pomegranate rind extract consumption is the 1-3% of cotton gauze quality, bath raio 1: 20, treatment temperature 50-80 ℃; Processing time 1-2h; Cotton gauze short texture through swollen helps the antibacterial activity composition in the pomegranate rind extract to be adsorbed onto on the cotton fiber, improves the antibiotic property of cotton gauze;
The 6th step: cryogenic freezing
The cotton gauze that will pass through above processing places the ultra low temperature freezer refrigerating chamber to be refrigerated to the whole hardening of cotton gauze, and the temperature of said ultra low temperature freezer refrigerating chamber is-25--80 ℃;
The 7th step: freeze-drying
Adopting the vacuum freeze-drying machine that the cotton gauze that freezes is fully carried out freeze-drying handles; Vacuum is-50 ℃ less than 20Pa, temperature in freeze-drying process; Adopt freeze drying technology dried rather than traditional oven dry or air-dry; With the space that abundant maintenance cotton fiber forms, improve the absorption property of cotton fiber in swollen and refrigerating process.
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| CN2010102212035A CN101892586B (en) | 2010-06-25 | 2010-06-25 | Method for modifying medical cotton gauze |
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| CN2010102212035A CN101892586B (en) | 2010-06-25 | 2010-06-25 | Method for modifying medical cotton gauze |
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| CN101892586A CN101892586A (en) | 2010-11-24 |
| CN101892586B true CN101892586B (en) | 2012-01-25 |
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Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103397509A (en) * | 2013-08-07 | 2013-11-20 | 武汉纺织大学 | Preparation method for antibacterial liquid-absorbing gauze |
| CN103498244A (en) * | 2013-09-05 | 2014-01-08 | 吴江秦邦纺织有限公司 | Medical water absorption gauze |
| CN106319952A (en) * | 2016-08-19 | 2017-01-11 | 常熟市鑫博伟针纺织有限公司 | After-finishing process of brushed fabric |
| CN107375997B (en) * | 2017-08-09 | 2020-07-31 | 振德医疗用品股份有限公司 | Preparation method of anti-adhesion medical antibacterial gauze for treating burns |
| CN108330681A (en) * | 2017-12-25 | 2018-07-27 | 江苏天章医用卫生新材料股份有限公司 | A kind of medical cotton gauze preparation process and method |
| CN108716111A (en) * | 2018-04-27 | 2018-10-30 | 湖南科力嘉纺织股份有限公司 | A kind of preparation method of high water absorption antibacterial cotton blended yarn cloth |
| CN110565224A (en) * | 2019-08-26 | 2019-12-13 | 徐州锦业纺织科技有限公司 | Processing method of degreased rayon yarn |
| CN114790653B (en) * | 2022-04-14 | 2023-10-13 | 东华大学 | Medical antibacterial cotton gauze and preparation method thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1034773A (en) * | 1964-04-03 | 1966-07-06 | Schroers Co Textilausruest | Method for treating textiles |
| CN101545199A (en) * | 2009-04-22 | 2009-09-30 | 苏州大学 | Antibiosis processing method of silk fiber or fabric thereof |
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2010
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1034773A (en) * | 1964-04-03 | 1966-07-06 | Schroers Co Textilausruest | Method for treating textiles |
| CN101545199A (en) * | 2009-04-22 | 2009-09-30 | 苏州大学 | Antibiosis processing method of silk fiber or fabric thereof |
Non-Patent Citations (3)
| Title |
|---|
| 乔树华等.石榴皮抑菌活性物质的初步研究.《农药》.2009,第48卷(第4期), * |
| 于兰等.石榴皮羊毛染色及其抗菌性试验研究.《资治文摘(管理版)》.2009,(第07期), * |
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Application publication date: 20101124 Assignee: WEIJIA TEXTILE GROUP CO., LTD. Assignor: Jiangnan University Contract record no.: 2015420000113 Denomination of invention: Method for modifying medical cotton gauze Granted publication date: 20120125 License type: Exclusive License Record date: 20150624 |
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