CN102505357A - Electrostatic spinning melt blowing composite non-woven material for filtering blood and preparation method of electrostatic spinning melt blowing composite non-woven material - Google Patents
Electrostatic spinning melt blowing composite non-woven material for filtering blood and preparation method of electrostatic spinning melt blowing composite non-woven material Download PDFInfo
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- CN102505357A CN102505357A CN2011102845901A CN201110284590A CN102505357A CN 102505357 A CN102505357 A CN 102505357A CN 2011102845901 A CN2011102845901 A CN 2011102845901A CN 201110284590 A CN201110284590 A CN 201110284590A CN 102505357 A CN102505357 A CN 102505357A
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Abstract
The invention relates to an electrostatic spinning melt blowing composite non-woven material for filtering blood and a preparation method of the electrostatic spinning melt blowing composite non-woven material. The electrostatic spinning melt blowing composite non-woven material comprises a melt blowing receiving material and an electrostatic spinning material located on a surface layer; the melt blowing receiving material is made by polyester chips via melt blowing process; and fibers sink down on a receiving plate wrapped by melt blowing materials after being stretched by effects of electric field force so that the electrostatic spinning material is manufactured. The preparation method includes steps: (1) mixing trifluoroacetic acid with dichloromethane, adding the polyester chips into the mixture, and obtaining spinning liquid after dissolving; (2) applying high-voltage positive current on a needle of a syringe, leading a receiving device wrapped with the melt blowing materials to be grounded, carrying out electrostatic spinning by the aid of the spinning liquid obtained from the step (1), and obtaining composite non-woven fabrics; and (3) drying the composite non-woven fabrics in a vacuum manner. The porosity and the specific surface area of the composite non-woven material are high, and removal efficiency of white blood cells in the blood is improved. The preparation method is simple, and is simple and convenient in operation, low in cost and not high in requirements to equipment.
Description
Technical field
The invention belongs to composite nonwoven material and preparation field thereof, particularly a kind of blood filtration spins with static and melts and sprays composite nonwoven material and preparation method thereof.
Background technology
In hospital's blood transfusion process,, therefore, need before the blood transfusion blood is filtered, remove leucocyte because leucocyte in blood donor's blood and the reaction of the leukocyte antibody generation allogeneic in receptor's blood can cause multiple transfusion reaction.Show after deliberation with centrifugal process, washing method, the freezing glycerine method of going and compare that filtration method is most effective to leucocyte removal, simultaneously can reclaim red blood cell efficiently again, therefore, filtration method is most economical, the most practical method of the leukoreduction filter of generally acknowledging.
The blood filter material of using at present is mainly the polyester meltblown material, and fibre diameter is about about 5um, has higher specific fiber surface and amasss, and leucocyte is had good filtration and suction-operated.The research of present stage to blood filter material mainly concentrates on following several respects:
1, the selection of filtering substrate.The substrate passed several generations development of blood filtration, fibre fineness is tapered, and aperture of filter material diminishes gradually, develops into the melt-blown filter materials of present stage use, and fibre diameter is merely several microns, and this has improved leukocytic filter efficiency greatly.
2, polyesters melt-blown non-woven material wettability is poor, both has been unfavorable for making full use of of filtering material, influences filter efficiency the blood filtration time is increased, and influences practical operation efficient.Blood filtration research at present concentrates on the exploration of the surface hydrophilic modification method of polyesters melt-blown non-woven material.Surface grafting hydrophilic radical and coating are two kinds of topmost method of modifying.
In recent years; The static spinning technique has obtained develop rapidly, is one of effective way of preparation nanofiber, provides a kind of fiber the material thinner than melting and spraying; Fibre diameter even can reach below the 100nm; It has advantages such as high porosity, low aperture and high-specific surface area, with respect to melt-blown filter materials, has the adsorption effect of higher filtration.
Summary of the invention
Technical problem to be solved by this invention provides a kind of blood filtration and spins with static and melt and spray composite nonwoven material and preparation method thereof, and the fibre fineness of this material is thinner, and the aperture is littler, and specific area is higher, and leucocyte removal efficient is more stable, reliable; The preparation method is simple, and is easy and simple to handle, and cost is low, less demanding to equipment.
A kind of blood filtration of the present invention spins with static and melts and sprays composite nonwoven material, and this material comprises: melt and spray and receive material and the static woven material that is positioned at the top layer; Wherein melting and spraying and receiving material is that the polyesters section forms through the melt-blown process manufacturing; The static woven material is under the electric field force effect, to obtain drawing-off by fiber, forms on the dash receiver that coats to the melt-blown material of ground connection that sinks then.
Described dash receiver is an aluminium sheet.
The described thickness that melts and sprays the reception material is 0.5-1.5mm, and average fibre diameter is 1-10um, and the material aperture is 1-10um.
The thickness of described static woven material is 0.05-0.2mm, and average fibre diameter is 100-2000nm, and average pore size is 0.5-1.5um.
A kind of blood filtration of the present invention spins the preparation method who melts and sprays composite nonwoven material with static, comprising:
(1) preparation of spinning solution: be 1 by volume: 5-5: 1 mixes trifluoroacetic acid (TFA) with carrene (DCM), add polyester slice then, obtains the spinning solution of concentration 0.1-0.3g/mL after the stirring and dissolving;
(2) electrostatic spinning: on syringe needle, apply high pressure positive electricity, coating melt-blown material receiving system ground connection; Use the spinning solution of step (1) gained to carry out electrostatic spinning, the spinning 10-25cm that spaces, the spinning solution extruded velocity is 0.5-2ml/h, spinning voltage is 15-35KV; The fiber that static spins formation is received on the melt-blowing nonwoven, obtains composite non-weaving cloth;
(3) vacuumize of composite non-weaving cloth:, guarantee the thorough volatilization of spinning residual solvent with above-mentioned composite non-weaving cloth vacuumize.
Stirring described in the step (1) is a magnetic agitation.
Electrostatic spinning described in the step (2) carries out under fume hood.
Melt-blown material described in the step (2) carries out electret in advance to be handled.
Adopt trifluoroacetic acid and the section of carrene dissolved polyester among the present invention; Spinning solution prepares in the process and to adopt magnetic stirring apparatus to stir, and thoroughly is dissolved in the solvent until polymer chips, forms the spinning solution of stable homogeneous.
After spinning solution is quantitatively extruded among the present invention, receive the effect of electric field force from syringe, fully drawing-off.In the spinning process, along with the drawing-off of electric field force to spinning solution, solvent evaporates, spinning solution is solidified into fiber; The fiber that makes static spin formation better is deposited on the fusion spray cloth, and melt-blown material can carry out electret in advance to be handled.Operating process is carried out under fume hood, is convenient to solvent and fully volatilizees.
For guaranteeing not contaminated blood of filter material, static spins and need carry out abundant vacuumize after the melt-blown non-woven Composite Preparation finishes, and guarantees the thorough volatilization of spinning residual solvent among the present invention.The vacuumize time is not less than 24h.
Filtering material of the present invention closes through two kinds of different component layers of aperture size; Obtained the filter material that a kind of bore diameter gradient distributes; At first contact with blood by melting and spraying part, tentatively filter and melt and spray the relative static of part filtration resistance and spin lessly, blood can fully contact with filter material.After passing meltblown layer, spin layer through static and realize obviously to improve filtering accuracy leukocytic fine filtering; Have very big prospect in the blood filtration application facet,, guarantee that blood donor's health is significant improving leukocyte removal efficiency.
The invention has the advantages that to blood filtration a kind of thinner, filter material that precision is higher is provided.Spin after the combination with melt-blown non-woven material through static, solved the powerful low shortcoming of static woven material, again the fibre fineness of material is reduced greatly simultaneously.The aperture also can realize the precision that tentatively is filled into of haemocyte is filtered to little gradient-structure from big.Electrostatic spinning fiber reaches Nano grade, has the characteristics of high porosity, high-specific surface area, and its adding more makes the removal efficient of blood middle leukocytes be able to promote, and to transfusion safety higher assurance is provided.
Beneficial effect
(1) blood filtration of the present invention spins with static and melts and sprays the characteristics that composite nonwoven material has high porosity, high-specific surface area, makes the removal efficient of blood middle leukocytes be able to promote, and to transfusion safety higher assurance is provided;
(2) preparation method of the present invention is simple, and is easy and simple to handle, and cost is low, less demanding to equipment.
The specific embodiment
Below in conjunction with specific embodiment, further set forth the present invention.Should be understood that these embodiment only to be used to the present invention is described and be not used in the restriction scope of the present invention.Should be understood that in addition those skilled in the art can do various changes or modification to the present invention after the content of having read the present invention's instruction, these equivalent form of values fall within the application's appended claims institute restricted portion equally.
Embodiment 1
Spin the vacuum drying step of preparation, electrostatic spinning and the composite of the included spinning solution of the method for meltblown composites according to above-mentioned manufacturing blood filtration of the present invention with static, adopt following process conditions:
(1) polybutylene terephthalate (PBT) section is dissolved among volume ratio 1: 1 the TFA and DCM.Take by weighing 2.0gPBT section and be dissolved in the mixed liquor of 5mlTFA and 5mlDCM, be prepared into mass and size percentage and be 20% spinning solution.After section is added to spin solvent, adopt magnetic stirrer to stir, solution adopts and seals film sealing, mixing time 12h in the whipping process.
(2) spinning solution is put into the syringe that capacity is 10ml, the spinning syringe needle is 13cm to the distance of receiving system; The extruded velocity of spinning solution is that making alive is the high pressure of 20KV on the 0.8ml/h. injection needle.Adopt grammes per square metre 105g/m
2The PBT melt-blown non-woven material for receiving material, the spinning time is 1h.
(3) behind the electrostatic spinning, PBT static spun melts and sprays composite wood as for vacuum drying chamber, drying time 24h.
Melt and spray part average fibre diameter 1.82um, static spins part average fibre diameter 0.59um, composite average pore size 0.79um.
Embodiment 2
Spin the vacuum drying step of preparation, electrostatic spinning and the composite of the included spinning solution of the method for meltblown composites according to above-mentioned manufacturing blood filtration of the present invention with static, adopt following process conditions:
(1) polybutylene terephthalate (PBT) section is dissolved among volume ratio 1: 1 the TFA and DCM.Take by weighing 2.5gPBT section and be dissolved in the mixed liquor of 5mlTFA and 5mlDCM, be prepared into mass and size percentage and be 25% spinning solution.After section is added to spin solvent, adopt magnetic stirrer to stir, solution adopts and seals film sealing, mixing time 12h in the whipping process.
(2) spinning solution is put into the syringe that capacity is 10ml, the spinning syringe needle is 13cm to the distance of receiving system; The extruded velocity of spinning solution is that making alive is the high pressure of 25KV on the 1.0ml/h. injection needle.Adopt grammes per square metre 105g/m
2The PBT melt-blown non-woven material for receiving material, the spinning time is 1h.
(3) behind the electrostatic spinning, PBT static spun melts and sprays composite wood as for vacuum drying chamber, drying time 24h.
Melt and spray part average fibre diameter 1.82um, static spins part average fibre diameter 0.37um, composite average pore size 0.72um.
Embodiment 3
Spin the vacuum drying step of preparation, electrostatic spinning and the composite of the included spinning solution of the method for meltblown composites according to above-mentioned manufacturing blood filtration of the present invention with static, adopt following process conditions:
(1) polybutylene terephthalate (PBT) section is dissolved among volume ratio 1: 1 the TFA and DCM.Take by weighing 3.0gPBT section and be dissolved in the mixed liquor of 5mlTFA and 5mlDCM, be prepared into mass and size percentage and be 30% spinning solution.After section is added to spin solvent, adopt magnetic stirrer to stir, solution adopts and seals film sealing, mixing time 12h in the whipping process.
(2) spinning solution is put into the syringe that capacity is 10ml, the spinning syringe needle is 13cm to the distance of receiving system; The extruded velocity of spinning solution is that making alive is the high pressure of 25KV on the 1.2ml/h. injection needle.Adopt grammes per square metre 105g/m
2The PBT melt-blown non-woven material for receiving material, the spinning time is 1h.
(3) behind the electrostatic spinning, PBT static spun melts and sprays composite wood as for vacuum drying chamber, drying time 24h.Melt and spray part average fibre diameter 1.82um, static spins part average fibre diameter 0.85um, composite average pore size 0.89um.
Claims (8)
1. a blood filtration spins with static and melts and sprays composite nonwoven material, and this material comprises: melt and spray and receive material and the static woven material that is positioned at the top layer; Wherein melting and spraying and receiving material is that the polyesters section forms through the melt-blown process manufacturing; The static woven material is under the electric field force effect, to obtain drawing-off by fiber, forms on the dash receiver that coats to the melt-blown material of ground connection that sinks then.
2. a kind of blood filtration according to claim 1 spins with static and melts and sprays composite nonwoven material, it is characterized in that: described dash receiver is an aluminium sheet.
3. a kind of blood filtration according to claim 1 spins with static and melts and sprays composite nonwoven material, it is characterized in that: the described thickness that melts and sprays the reception material is 0.5-1.5mm, and average fibre diameter is 1-10um, and the material average pore size is 1-10um.
4. a kind of blood filtration according to claim 1 spins with static and melts and sprays composite nonwoven material, it is characterized in that: the thickness of described static woven material is 0.05-0.2mm, and average fibre diameter is 100-2000nm, and average pore size is 0.5-1.5um.
5. a blood filtration spins the preparation method who melts and sprays composite nonwoven material with static, comprising:
(1) be 1 by volume: 5-5: 1 mixes trifluoroacetic acid with carrene, add polyester slice then, obtains the spinning solution of concentration 0.1-0.3g/mL after the stirring and dissolving;
(2) on syringe needle, apply high pressure positive electricity, coating melt-blown material receiving system ground connection; Use the spinning solution of step (1) gained to carry out electrostatic spinning, the spinning 10-25cm that spaces, the spinning solution extruded velocity is 0.5-2ml/h, spinning voltage is 15-35KV; The fiber that static spins formation is received on the melt-blown material, obtains composite non-weaving cloth;
(3), make the spinning residual solvent thoroughly volatilize with above-mentioned composite non-weaving cloth vacuumize.
6. a kind of blood filtration according to claim 5 spins the preparation method who melts and sprays composite nonwoven material with static, it is characterized in that: the stirring described in the step (1) is a magnetic agitation.
7. a kind of blood filtration according to claim 5 spins the preparation method who melts and sprays composite nonwoven material with static, it is characterized in that: the electrostatic spinning described in the step (2) carries out under fume hood.
8. a kind of blood filtration according to claim 5 spins the preparation method who melts and sprays composite nonwoven material with static, it is characterized in that: the melt-blown material described in the step (2) carries out electret in advance to be handled.
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| CN102995294A (en) * | 2012-12-13 | 2013-03-27 | 武汉纺织大学 | Manufacturing method of antistatic needle fabric |
| CN104289042A (en) * | 2014-09-05 | 2015-01-21 | 东华大学 | Electrospinning nano-fiber electret filtering material and its preparation method |
| CN104540531A (en) * | 2012-06-29 | 2015-04-22 | 阿莫绿色技术有限公司 | Cytokine adsorption sheet, method for manufacturing same, and blood filter using same |
| CN106975363A (en) * | 2017-03-15 | 2017-07-25 | 绿纳科技有限责任公司 | A kind of production method of composite hollow nanofiber filter core |
| CN107757019A (en) * | 2017-09-21 | 2018-03-06 | 东华大学 | Directional stream-guidance non-woven material and preparation method thereof, use device, application method |
| CN114687072A (en) * | 2022-03-29 | 2022-07-01 | 北京服装学院 | Leukocyte-removing antibacterial composite nanofiber membrane as well as preparation method and application thereof |
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| CN114687072A (en) * | 2022-03-29 | 2022-07-01 | 北京服装学院 | Leukocyte-removing antibacterial composite nanofiber membrane as well as preparation method and application thereof |
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Application publication date: 20120620 |