CN205556989U - Height is antibiotic, novel slightly soluble non -woven fabrics of small granule of absorption heavy metal - Google Patents
Height is antibiotic, novel slightly soluble non -woven fabrics of small granule of absorption heavy metal Download PDFInfo
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- CN205556989U CN205556989U CN201620144753.4U CN201620144753U CN205556989U CN 205556989 U CN205556989 U CN 205556989U CN 201620144753 U CN201620144753 U CN 201620144753U CN 205556989 U CN205556989 U CN 205556989U
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- carboxymethyl chitosan
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Abstract
The utility model discloses a height is antibiotic, novel slightly soluble non -woven fabrics of small granule of absorption heavy metal, including carboxymethyl chitosan fibers, chitosan fiber and low -melting ES fibre, the ES fibre is the belly core structure, and the inner core is the PP fibre, and the crust is the PE fibre, is equipped with the agglutinate hot pressing district on the non -woven fabrics, is original non -woven fabrics district between the adjacent agglutinate hot pressing district. The utility model discloses soft ventilative, intensity is big, difficult fracture, and the moisture absorption moisture retention obviously strengthen, be at 25~40 DEG C temperature, PH that carboxymethyl chitosan fibers, chitosan fiber dissolve in various degree under 5.0~8.0 environment, produces the slightly soluble state, effectual separation, filters small granule, has higher antibacterial property, the small particle performance of absorption heavy metal.
Description
Technical field
This utility model belongs to field of nonwoven fabric technology, is specifically related to a kind of high antibacterial, novel slightly soluble non-woven fabrics of Adsorption of Heavy Metals molecule.
Background technology
Non-woven fabrics is a kind of fabric that need not spin cotton and weave cloth and formed, simply textile staple or long filament are oriented or random alignment, form fibre net structure, then machinery, the method such as hot sticky or chemical is used to reinforce and form, having softness, the ventilative and tencel goods of planar structure, advantage is not produce Soft flocks, and air permeable waterproof, environmental protection, pliable and tough, nonpoisonous and tasteless, durable, silkiness is soft, also it is the one of reinforcing material, and the sensation of also cotton.The non-woven fabrics being used primarily for hygienic article uses polypropylene, terylene etc. to produce, during production harsher to temperature requirement, operation easier is big, and integral hardness is bigger, used ES fiber to produce non-woven fabrics later, there is the features such as bulkiness, flexibility, high intensity, oil suction, water suction, may be used for the disposable sanitary articles such as mask, diaper, sanitary towel, but function is limited, not there is antibiotic property, it is impossible to absorption poisonous and harmful substance.
Chitosan is also known as water-soluble chitosan, it it is a kind of polysaccharide natural polymer, the product being prepared through deacetylation by chitin, there is good biocompatibility, antibiotic property, biodegradability and the ability of Adsorption of Heavy Metal Ions, chitosan is utilized to be spun to chitin fiber, there is significant antibacterial anti-mildew effect, can be widely used for health textile and clothing, such as sanitary towel, pram suit, burn and trauma care gauze etc., but due to the strong hydrogen bonding effect between chitosan molecule, intermolecular ordered structure makes chitosan crystal structure form compact and stable, thus be dissolved only in acidic aqueous solution, limit the extensive utilization of chitosan.Chitosan contains abundant amino and hydroxyl, can react under certain condition and obtain carboxymethylated chitosan, both the advantage having remained chitosan, significantly improve again water solublity, carboxymethyl chitosan has three kinds: O-CMC, N-carboxymethyl chitosan, O, N-carboxymethyl chitosan, processes the carboxymethyl chitosan product that can obtain different degree of substitution at different conditions, and the performance of carboxymethyl chitosan is mainly determined by molecular weight, deacetylation and substitution value.Containing substantial amounts of amido and carboxymethyl group in carboxymethyl chitosan fibre structure, there is higher water absorption and absorption property.
How to prepare the carboxymethyl chitosan fiber of certain deacetylation and substitution value, and it is mixed with a kind of non-woven fabrics with other fibers, in addition to retaining the advantage of chitin fiber, slightly soluble state can be produced under certain condition, possess the function of high Adsorption of Heavy Metals molecule antibacterial, high, be this area research staff problem of needing solution badly.
Summary of the invention
The purpose of this utility model is to provide a kind of high antibacterial, novel slightly soluble non-woven fabrics of Adsorption of Heavy Metals molecule, improves the performance of traditional non-woven cloth, can produce slightly soluble state under certain condition, has higher anti-microbial property, Adsorption of Heavy Metals molecule performance.
The technical solution of the utility model is: a kind of high antibacterial, novel slightly soluble non-woven fabrics of Adsorption of Heavy Metals molecule, it is prepared from by the ES fiber of carboxymethyl chitosan fiber, chitin fiber and low melting point, non-woven fabrics is provided with heat pressure adhesive district, it it is original non-woven fabrics district between adjacent heat pressure adhesive district, it is that under 5.0 ~ 8.0 environment, carboxymethyl chitosan fiber, chitin fiber dissolve in various degree at temperature 25 ~ 40 DEG C, PH, slightly soluble state can be produced；ES fiber is belly core structure, and inner core is PP fiber, and crust is PE fiber；Described carboxymethyl chitosan fiber, chitin fiber, the percentage by weight of three kinds of fibers of ES fiber be: carboxymethyl chitosan fiber is 1%-10%, chitin fiber is 5%-20%, ES fiber is 70%-94%, carboxymethyl chitosan fiber melt is 500 ~ 800 DEG C, chitin fiber fusing point is 300 ~ 600 DEG C, PP fiber melt is 165 ~ 173 DEG C, and PE fiber melt is 124～138 DEG C.
The preparation technology of described slightly soluble non-woven fabrics, comprises the following steps:
(1) it is 1 × 10 by molecular weight4, deacetylation be 92% chitosan mix homogeneously than under room temperature with the quality of 1:5 with isopropanol, swelling 1 ~ 1.5h, being subsequently adding with chitosan mass than for 1:6, concentration is the sodium hydroxide of 20ml/L, regulates PH=9, strong stirring 1.5 ~ 2h alkalization at 45 DEG C；
(2) be then added dropwise over sodium hydroxide mass ratio be 1:1, concentration be the monoxone of 5ml/L, dropping limit, limit is stirred, and drips process heating in water bath, keeps temperature of reaction system 55 DEG C, drips complete in 1.5h, then drips hydrochloric acid, regulates PH=7；
(3) centrifugation, adds the acetone precipitation of 3 times amount in supernatant, is filtrated to get filter cake, rinses with the dehydrated alcohol of 3 times amount again, be vacuum dried, obtain the carboxymethyl chitosan of macromolecule at a temperature of 45 DEG C after pulverizing；
(4) carboxymethyl chitosan handled well employing wet spinning technology is prepared carboxymethyl chitosan fiber；
Two, carboxymethyl chitosan fiber post processing
(1) prepared carboxymethyl chitosan fiber is processed under 500W microwave 3 ~ 5min, molecular weight of degrading, increase water solublity, improve carboxymethyl chitosan fibre antibacterial；
(2) at 10 DEG C, process the carboxymethyl chitosan fiber obtained in above-mentioned steps (1) with organosilicon quaternary ammonium salt antibacterial surface agent, improve carboxymethyl chitosan fibrous fracture intensity and anti-microbial property；
Three, the preparation of slightly soluble non-woven fabrics
First by carboxymethyl chitosan fiber, chitin fiber and ES fiber carry out shredding, combing blending becomes fleece, fleece is passed through heat pressure adhesive at 140 DEG C, multiple adjacent protruding hot pressing bar is set on heating platen used by heat pressure adhesive, fleece is positioned in the middle of two heating platens, the ES fiber of low melting point is melted at hot pressing bar, make carboxymethyl chitosan fiber, adhesion is produced between chitin fiber and ES fiber, carboxymethyl chitosan fiber at non-thermal press strip, chitin fiber and ES fiber still keep original state, prepare high antibacterial after cooling, the novel slightly soluble non-woven fabrics of Adsorption of Heavy Metals molecule.
For ensureing that allowing this utility model is slightly soluble under 5.0 ~ 8.0 environment at temperature 25 ~ 40 DEG C, PH, by UV treatment in the preparation process of described carboxymethyl chitosan fiber, homogeneous heating, the carboxymethyl chitosan molecular weight of preparation, water solublity increases.
Compared with prior art, this utility model advantage is:
(1) this utility model heat pressure adhesive district is spaced apart with original non-woven fabrics district, good permeability, and intensity is big, not easy fracture；
(2) preparation process adds chitin fiber, chitosan and metal ion are combined by ion exchange, absorption, chelation, improve the performance of traditional non-woven cloth, there is the ability of good biocompatibility, antibiotic property, biodegradability and Adsorption of Heavy Metal Ions；
(3) carboxymethyl chitosan is added, owing to introducing hydrophilic carboxylic group on carboxymethyl chitosan strand, significantly improve water solublity, moisture-absorbing moisture-keeping performance is made to be remarkably reinforced, and the substitution value of the carboxymethyl chitosan of preparation has reached preferable water absorbing properties and adsorption effect under conditions of this utility model sets, anti-microbial property is good；
(4) using UV treatment in preparation process for carboxymethyl chitosan fiber of the present utility model, the molecular weight of degraded carboxymethyl chitosan, solubility property is more preferable；Use microwave and antibacterial surface agent to process after the preparation of carboxymethyl chitosan fiber, increase water solublity, improve intensity and the antibiotic property of carboxymethyl chitosan fiber, and then improve the intensity of the present invention, water solublity and anti-microbial property；
(4) this utility model can produce slightly soluble state under certain condition, run into alkalescence or neutral liquid, carboxymethyl chitosan fiber meeting slightly soluble, running into acidic liquid, carboxymethyl chitosan fiber, chitin fiber slightly soluble simultaneously, under slightly soluble state, the ratio that this utility model is dissolved is little, outward appearance own, color, intensity will not occur significant change, but can more effectively intercept, filter and adhere to molecule, have higher anti-microbial property, Adsorption of Heavy Metals molecule performance.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model；
Fig. 2 is the structural representation of heating platen used by this utility model heat pressure adhesive process.
1. heat pressure adhesive district；The most original non-woven fabrics district；3. heating platen；4. hot pressing bar.
Detailed description of the invention
Below in conjunction with the accompanying drawings and this utility model is described in further detail by specific embodiment.
Embodiment 1
A kind of high antibacterial, novel slightly soluble non-woven fabrics of Adsorption of Heavy Metals molecule, it is prepared from by the ES fiber of carboxymethyl chitosan fiber, chitin fiber and low melting point, this non-woven fabrics is provided with heat pressure adhesive district 1, it it is original non-woven fabrics district 2 between adjacent heat pressure adhesive district 1, it is carboxymethyl chitosan fibrolysis 15% under 5.0 environment, chitin fiber dissolving 7% at temperature 25 DEG C, PH, produces slightly soluble state；ES fiber is belly core structure, and inner core is PP fiber, and crust is PE fiber；Carboxymethyl chitosan fiber, chitin fiber, the percentage by weight of three kinds of fibers of ES fiber be: carboxymethyl chitosan fiber is 1%, chitin fiber is 5%, ES fiber is 94%, carboxymethyl chitosan fiber melt is 500 ~ 800 DEG C, chitin fiber fusing point is 300 ~ 600 DEG C, PP fiber melt is 165 ~ 173 DEG C, and PE fiber melt is 124～138 DEG C.
The preparation technology of the slightly soluble non-woven fabrics of the present embodiment, comprises the following steps:
(1) it is 1 × 10 by molecular weight4, deacetylation be 92% chitosan mix homogeneously than under room temperature with the quality of 1:5 with isopropanol, swelling 1h, being subsequently adding with chitosan mass than for 1:6, concentration is the sodium hydroxide of 20ml/L, regulates PH=9, strong stirring 1.5h alkalization at 45 DEG C；
(2) be then added dropwise over sodium hydroxide mass ratio be 1:1, concentration be the monoxone of 5ml/L, dropping limit, limit is stirred, and drips process heating in water bath, keeps temperature of reaction system 55 DEG C, drips complete in 1.5h, then drips hydrochloric acid, regulates PH=7；
(3) centrifugation, in supernatant, add the acetone precipitation of 3 times amount, be filtrated to get filter cake, rinse with the dehydrated alcohol of 3 times amount again after pulverizing, it is vacuum dried at a temperature of 45 DEG C, obtains the carboxymethyl chitosan that substitution value on O position is 0.6, substitution value is the macromolecule of 0.5 on N position；
(4) carboxymethyl chitosan handled well employing wet spinning technology is prepared carboxymethyl chitosan fiber；
Two, carboxymethyl chitosan fiber post processing
(1) prepared carboxymethyl chitosan fiber is processed under 500W microwave 3min, molecular weight of degrading, increase water solublity, improve carboxymethyl chitosan fibre antibacterial；
(2) at 10 DEG C, process the carboxymethyl chitosan fiber obtained in above-mentioned steps (1) with organosilicon quaternary ammonium salt antibacterial surface agent, improve carboxymethyl chitosan fibrous fracture intensity and anti-microbial property；
Three, the preparation of slightly soluble non-woven fabrics
First by carboxymethyl chitosan fiber, chitin fiber and ES fiber carry out shredding, combing blending becomes fleece, fleece is passed through heat pressure adhesive at 140 DEG C, multiple adjacent protruding hot pressing bar 4 is set on heating platen 3 used by heat pressure adhesive, fleece is positioned in the middle of two heating platens 3, the ES fiber of low melting point is melted at hot pressing bar 4, make carboxymethyl chitosan fiber, adhesion is produced between chitin fiber and ES fiber, carboxymethyl chitosan fiber at non-thermal press strip, chitin fiber and ES fiber still keep original state, prepare high antibacterial after cooling, the novel slightly soluble non-woven fabrics of Adsorption of Heavy Metals molecule.
For ensureing that allowing this utility model is carboxymethyl chitosan fibrolysis 15% under 5.0 environment, chitin fiber dissolving 7% at temperature 25 DEG C, PH, produce slightly soluble state, by UV treatment in the preparation process of described carboxymethyl chitosan fiber, homogeneous heating, the carboxymethyl chitosan molecular weight of preparation, water solublity increases.
Embodiment 2
A kind of high antibacterial, novel slightly soluble non-woven fabrics of Adsorption of Heavy Metals molecule, it is prepared from by the ES fiber of carboxymethyl chitosan fiber, chitin fiber and low melting point, non-woven fabrics is provided with heat pressure adhesive district 1, it it is original non-woven fabrics district 2 between adjacent heat pressure adhesive district 1, it is carboxymethyl chitosan fibrolysis 20% under 6.0 environment, chitin fiber dissolving 4% at temperature 30 DEG C, PH, produces slightly soluble state；ES fiber is belly core structure, and inner core is PP fiber, and crust is PE fiber；Carboxymethyl chitosan fiber, chitin fiber, the percentage by weight of three kinds of fibers of ES fiber be: carboxymethyl chitosan fiber is 5%, and chitin fiber is 10%, and ES fiber is 85%, and remaining structure is same as in Example 1.
The preparation technology of the slightly soluble non-woven fabrics of the present embodiment, comprises the following steps:
(1) it is 1 × 10 by molecular weight4, deacetylation be 92% chitosan mix homogeneously than under room temperature with the quality of 1:5 with isopropanol, swelling 1.2h, being subsequently adding with chitosan mass than for 1:6, concentration is the sodium hydroxide of 20ml/L, regulates PH=9, strong stirring 1.7h alkalization at 45 DEG C；
(2) be then added dropwise over sodium hydroxide mass ratio be 1:1, concentration be the monoxone of 5ml/L, dropping limit, limit is stirred, and drips process heating in water bath, keeps temperature of reaction system 55 DEG C, drips complete in 1.5h, then drips hydrochloric acid, regulates PH=7；
(3) centrifugation, in supernatant, add the acetone precipitation of 3 times amount, be filtrated to get filter cake, rinse with the dehydrated alcohol of 3 times amount again after pulverizing, it is vacuum dried at a temperature of 45 DEG C, obtains the carboxymethyl chitosan that substitution value on O position is 0.7, substitution value is the macromolecule of 0.6 on N position；
(4) carboxymethyl chitosan handled well employing wet spinning technology is prepared carboxymethyl chitosan fiber；
Two, carboxymethyl chitosan fiber post processing
(1) prepared carboxymethyl chitosan fiber is processed under 500W microwave 4min, molecular weight of degrading, increase water solublity, improve carboxymethyl chitosan fibre antibacterial；
(2) at 10 DEG C, process the carboxymethyl chitosan fiber obtained in above-mentioned steps (1) with organosilicon quaternary ammonium salt antibacterial surface agent, improve carboxymethyl chitosan fibrous fracture intensity and anti-microbial property；
Three, the preparation of slightly soluble non-woven fabrics
First by carboxymethyl chitosan fiber, chitin fiber and ES fiber carry out shredding, combing blending becomes fleece, fleece is passed through heat pressure adhesive at 140 DEG C, multiple adjacent protruding hot pressing bar 4 is set on heating platen 3 used by heat pressure adhesive, fleece is positioned in the middle of two heating platens 3, the ES fiber of low melting point is melted at hot pressing bar 4, make carboxymethyl chitosan fiber, adhesion is produced between chitin fiber and ES fiber, carboxymethyl chitosan fiber at non-thermal press strip, chitin fiber and ES fiber still keep original state, prepare high antibacterial after cooling, the novel slightly soluble non-woven fabrics of Adsorption of Heavy Metals molecule.
For ensureing that allowing this utility model is carboxymethyl chitosan fibrolysis 20% under 6.0 environment, chitin fiber dissolving 4% at temperature 30 DEG C, PH, produce slightly soluble state, by UV treatment in the preparation process of described carboxymethyl chitosan fiber, homogeneous heating, the carboxymethyl chitosan molecular weight of preparation, water solublity increases.
Embodiment 3
A kind of high antibacterial, novel slightly soluble non-woven fabrics of Adsorption of Heavy Metals molecule, it is prepared from by the ES fiber of carboxymethyl chitosan fiber, chitin fiber and low melting point, non-woven fabrics is provided with heat pressure adhesive district 1, it it is original non-woven fabrics district 2 between adjacent heat pressure adhesive district 1, it is carboxymethyl chitosan fibrolysis 21% under 8.0 environment at temperature 40 DEG C, PH, produces slightly soluble state；ES fiber is belly core structure, and inner core is PP fiber, and crust is PE fiber；Carboxymethyl chitosan fiber, chitin fiber, the percentage by weight of three kinds of fibers of ES fiber be: carboxymethyl chitosan fiber is 10%, and chitin fiber is 20%, and ES fiber is 70%, and remaining structure is same as in Example 1.
The preparation technology of the slightly soluble non-woven fabrics of the present embodiment, comprises the following steps:
(1) it is 1 × 10 by molecular weight4, deacetylation be 92% chitosan mix homogeneously than under room temperature with the quality of 1:5 with isopropanol, swelling 1.5h, being subsequently adding with chitosan mass than for 1:6, concentration is the sodium hydroxide of 20ml/L, regulates PH=9, strong stirring 2h alkalization at 45 DEG C；
(2) be then added dropwise over sodium hydroxide mass ratio be 1:1, concentration be the monoxone of 5ml/L, dropping limit, limit is stirred, and drips process heating in water bath, keeps temperature of reaction system 55 DEG C, drips complete in 1.5h, then drips hydrochloric acid, regulates PH=7；
(3) centrifugation, in supernatant, add the acetone precipitation of 3 times amount, be filtrated to get filter cake, rinse with the dehydrated alcohol of 3 times amount again after pulverizing, it is vacuum dried at a temperature of 45 DEG C, obtains the carboxymethyl chitosan that substitution value on O position is 0.8, substitution value is the macromolecule of 0.65 on N position；
(4) carboxymethyl chitosan handled well employing wet spinning technology is prepared carboxymethyl chitosan fiber；
Two, carboxymethyl chitosan fiber post processing
(1) prepared carboxymethyl chitosan fiber is processed under 500W microwave 5min, molecular weight of degrading, increase water solublity, improve carboxymethyl chitosan fibre antibacterial；
(2) at 10 DEG C, process the carboxymethyl chitosan fiber obtained in above-mentioned steps (1) with organosilicon quaternary ammonium salt antibacterial surface agent, improve carboxymethyl chitosan fibrous fracture intensity and anti-microbial property；
Three, the preparation of slightly soluble non-woven fabrics
First by carboxymethyl chitosan fiber, chitin fiber and ES fiber carry out shredding, combing blending becomes fleece, fleece is passed through heat pressure adhesive at 140 DEG C, multiple adjacent protruding hot pressing bar 4 is set on heating platen 3 used by heat pressure adhesive, fleece is positioned in the middle of two heating platens 3, the ES fiber of low melting point is melted at hot pressing bar 4, make carboxymethyl chitosan fiber, adhesion is produced between chitin fiber and ES fiber, carboxymethyl chitosan fiber at non-thermal press strip, chitin fiber and ES fiber still keep original state, prepare high antibacterial after cooling, the novel slightly soluble non-woven fabrics of Adsorption of Heavy Metals molecule.
For ensureing that allowing this utility model is carboxymethyl chitosan fibrolysis 21% under 8.0 environment at temperature 40 DEG C, PH, produce slightly soluble state, by UV treatment in the preparation process of described carboxymethyl chitosan fiber, homogeneous heating, the carboxymethyl chitosan molecular weight of preparation, water solublity increases.
In sum, this utility model heat pressure adhesive district is spaced apart with original non-woven fabrics district, good permeability, and intensity is big, not easy fracture；Add chitin fiber, carboxymethyl chitosan fiber, significantly improve water solublity, make moisture-absorbing moisture-keeping performance be remarkably reinforced；Slightly soluble state can be produced under certain condition, effective obstruct, filtration molecule, there is higher anti-microbial property, Adsorption of Heavy Metals molecule performance.
Being illustrated this utility model the most by way of example, but this utility model is not limited to above-mentioned specific embodiment, all any changes done based on this utility model or modification belong to the scope that this utility model is claimed.
Claims (1)
1. one kind high antibacterial, the novel slightly soluble non-woven fabrics of Adsorption of Heavy Metals molecule, it is characterized in that: include the ES fiber of carboxymethyl chitosan fiber, chitin fiber and low melting point, described ES fiber is belly core structure, inner core is PP fiber, crust is PE fiber, non-woven fabrics is provided with heat pressure adhesive district, is original non-woven fabrics district between adjacent heat pressure adhesive district.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620144753.4U CN205556989U (en) | 2016-02-26 | 2016-02-26 | Height is antibiotic, novel slightly soluble non -woven fabrics of small granule of absorption heavy metal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620144753.4U CN205556989U (en) | 2016-02-26 | 2016-02-26 | Height is antibiotic, novel slightly soluble non -woven fabrics of small granule of absorption heavy metal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205556989U true CN205556989U (en) | 2016-09-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620144753.4U Expired - Fee Related CN205556989U (en) | 2016-02-26 | 2016-02-26 | Height is antibiotic, novel slightly soluble non -woven fabrics of small granule of absorption heavy metal |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205556989U (en) |
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2016
- 2016-02-26 CN CN201620144753.4U patent/CN205556989U/en not_active Expired - Fee Related
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160907 Termination date: 20210226 |