CN114534527A - Membrane filtration assembly - Google Patents
Membrane filtration assembly Download PDFInfo
- Publication number
- CN114534527A CN114534527A CN202210402061.5A CN202210402061A CN114534527A CN 114534527 A CN114534527 A CN 114534527A CN 202210402061 A CN202210402061 A CN 202210402061A CN 114534527 A CN114534527 A CN 114534527A
- Authority
- CN
- China
- Prior art keywords
- membrane
- filtering
- nano
- dispersion liquid
- drying
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D71/00—Semi-permeable membranes for separation processes or apparatus characterised by the material; Manufacturing processes specially adapted therefor
- B01D71/06—Organic material
- B01D71/76—Macromolecular material not specifically provided for in a single one of groups B01D71/08 - B01D71/74
- B01D71/82—Macromolecular material not specifically provided for in a single one of groups B01D71/08 - B01D71/74 characterised by the presence of specified groups, e.g. introduced by chemical after-treatment
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M60/00—Blood pumps; Devices for mechanical circulatory actuation; Balloon pumps for circulatory assistance
- A61M60/10—Location thereof with respect to the patient's body
- A61M60/122—Implantable pumps or pumping devices, i.e. the blood being pumped inside the patient's body
- A61M60/165—Implantable pumps or pumping devices, i.e. the blood being pumped inside the patient's body implantable in, on, or around the heart
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M60/00—Blood pumps; Devices for mechanical circulatory actuation; Balloon pumps for circulatory assistance
- A61M60/80—Constructional details other than related to driving
- A61M60/855—Constructional details other than related to driving of implantable pumps or pumping devices
- A61M60/884—Constructional details other than related to driving of implantable pumps or pumping devices being associated to additional implantable blood treating devices
- A61M60/888—Blood filters
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D67/00—Processes specially adapted for manufacturing semi-permeable membranes for separation processes or apparatus
- B01D67/0081—After-treatment of organic or inorganic membranes
- B01D67/0086—Mechanical after-treatment
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D67/00—Processes specially adapted for manufacturing semi-permeable membranes for separation processes or apparatus
- B01D67/0081—After-treatment of organic or inorganic membranes
- B01D67/0095—Drying
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D69/00—Semi-permeable membranes for separation processes or apparatus characterised by their form, structure or properties; Manufacturing processes specially adapted therefor
- B01D69/02—Semi-permeable membranes for separation processes or apparatus characterised by their form, structure or properties; Manufacturing processes specially adapted therefor characterised by their properties
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D69/00—Semi-permeable membranes for separation processes or apparatus characterised by their form, structure or properties; Manufacturing processes specially adapted therefor
- B01D69/10—Supported membranes; Membrane supports
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D69/00—Semi-permeable membranes for separation processes or apparatus characterised by their form, structure or properties; Manufacturing processes specially adapted therefor
- B01D69/12—Composite membranes; Ultra-thin membranes
- B01D69/125—In situ manufacturing by polymerisation, polycondensation, cross-linking or chemical reaction
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D71/00—Semi-permeable membranes for separation processes or apparatus characterised by the material; Manufacturing processes specially adapted therefor
- B01D71/06—Organic material
- B01D71/08—Polysaccharides
- B01D71/10—Cellulose; Modified cellulose
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2323/00—Details relating to membrane preparation
- B01D2323/36—Introduction of specific chemical groups
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2325/00—Details relating to properties of membranes
- B01D2325/24—Mechanical properties, e.g. strength
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2325/00—Details relating to properties of membranes
- B01D2325/48—Antimicrobial properties
-
- 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
- Y02A20/00—Water conservation; Efficient water supply; Efficient water use
- Y02A20/124—Water desalination
- Y02A20/131—Reverse-osmosis
Abstract
The membrane filtering assembly comprises a support piece in a conical tube structure and a filtering membrane coated on a small opening end of the support piece, wherein the filtering membrane comprises nano fiber filaments and polyphenol compounds, and is formed into a uniform membrane structure through hydrogen bond combination, and the membrane filtering assembly is prepared by adopting the following steps: 1) preparing nano-fiber filaments and polyphenol compounds into nano-fiber filament dispersion liquid and polyphenol compound dispersion liquid respectively; 2) dropwise adding the polyphenol compound dispersion liquid into the nano-fiber silk dispersion liquid, and stirring to obtain a mixed liquid; 3) filtering and drying the mixed solution to obtain a primary membrane; 4) and (3) drawing, washing and drying the primary membrane to obtain a filtering membrane. The filtering membrane used by the membrane module is prepared by using renewable natural materials, meets the sustainable development requirement on the basis of having the functions of filtering protein and resisting bacteria, has good biocompatibility and can meet the matching requirement of an implanted auxiliary device.
Description
Technical Field
The invention relates to the field of membrane structures, in particular to a membrane filtration assembly.
Background
Membrane technology is widely used in fields including dialysis, reverse osmosis, microfiltration, ultrafiltration, nanofiltration, membrane reactors, and the like.
The implantable left ventricle auxiliary device is provided with the blood pump assembly, the blood inlet pipe and the blood outlet pipe which are arranged in the body, so that the risks of right heart failure, aortic valve insufficiency, digestive tract hemorrhage and the like are reduced, and the life quality of a patient is improved.
The implanted left ventricle auxiliary device is generally provided with the filtering membrane at the inlet of the blood pump component, so that the red blood cells and other biomass can normally pass through the implanted left ventricle auxiliary device, and certain blocking and killing effects on bacteria in the implanted left ventricle auxiliary device are achieved. At present, the preparation of the filtering membrane usually adopts high molecular petrochemical products, and the cellulose and other materials are used as renewable natural high molecular materials, so that the technical personnel in the field need to solve the problem of how to use the cellulose as a main raw material for preparing the membrane filtering component suitable for the left ventricle auxiliary device.
Disclosure of Invention
The invention aims to provide a membrane filtration assembly which is prepared from renewable natural materials, meets the sustainable development requirement on the basis of having the functions of protein filtration and bacteria resistance, has good biocompatibility and can meet the matching requirement of an implanted auxiliary device.
The technical scheme for realizing the purpose of the invention is as follows:
the membrane filtering assembly comprises a support piece in a conical tube structure and a filtering membrane coated on a small opening end of the support piece, wherein the filtering membrane comprises nano fiber filaments and polyphenol compounds, and is formed into a uniform membrane structure through hydrogen bond combination, and the membrane filtering assembly is prepared by adopting the following steps:
1) preparing nano-fiber filaments and polyphenol compounds into nano-fiber filament dispersion liquid and polyphenol compound dispersion liquid respectively;
2) dropwise adding the polyphenol compound dispersion liquid into the nanofiber silk dispersion liquid, and stirring to obtain a mixed liquid;
3) filtering and drying the mixed solution to obtain a primary membrane;
4) and (3) drawing, washing and drying the primary membrane to obtain a filtering membrane.
Preferably, the length of the nanofiber silk is 20-100 μm, and the mass ratio of the nanofiber silk to the polyphenol compound is 100: 2.5-15.
Preferably, the thickness of the film-like structure is 10 to 30 μm.
Preferably, the polyphenol compound is tannic acid or dopamine.
Preferably, the step 1) uses water as a dispersing agent, and the concentration of the nano-fiber silk dispersion liquid is 0.3-8 wt%.
Preferably, the drying in step 3) is natural drying in the shade, and the drying time is 6-8 h.
Preferably, the drying in the step 4) is natural drying in the shade, and the drying time is 6-8 h.
The technical scheme has the following technical effects:
1. the filtering membrane used by the membrane filtering component takes the nano-fiber filaments and the polyphenol compounds as raw materials, and the nano-fiber filaments and the polyphenol compounds are renewable resources, meet the requirement of continuous development and have good biocompatibility. The nano fiber filaments and the polyphenol compounds and the nano fiber filaments are bonded through multiple hydrogen bonds to form a membrane structure, so that the mechanical strength of the prepared membrane structure can be effectively improved, and the use requirement of the membrane filtering component is met.
2. According to the filtering membrane used by the membrane filtering assembly, the nano fiber filaments are bonded through hydrogen bonds to form a membrane main body structure, a membrane structure with high porosity is formed, red blood cells and the like are allowed to normally pass through, the polyphenol compounds are uniformly distributed on the membrane structure through the hydrogen bonds, and the membrane filtering assembly contains abundant phenolic hydroxyl groups, has an antibacterial function and is endowed with a sterilization function.
3. According to the membrane filtration assembly, when the filtration membrane is prepared, the nano-fiber filaments and the polyphenol compound are respectively prepared into the dispersion liquid, the nano-fiber filament dispersion liquid is firstly combined by a bond, then the polyphenol compound dispersion liquid is stirred and added in a dropwise manner, so that the polyphenol compound is uniformly distributed in a hydrogen bond manner, and finally, a uniform composite membrane is obtained in a suction filtration and drying manner.
The membrane filtration component prepared by the invention can be assembled at the blood pump component inlet of the implanted left ventricle auxiliary device, is convenient to install and replace, and can meet the actual requirement.
The following description will be further described with reference to specific embodiments.
Detailed Description
In the invention, the nano-fiber filaments can be prepared by taking wood pulp (with the cellulose content of 90%) as a raw material by a TEMPO oxidation method, and can also be directly purchased from the market, and the polyphenol compounds are tannic acid or dopamine and are directly purchased from the market.
Example 1
Preparing 0.3 wt% of nano-cellosilk water dispersion, and then dripping the aqueous tannic acid dispersion into the nano-cellosilk water dispersion, wherein the mass of the tannic acid is 2.5% of that of the nano-cellosilk. Stirring for 6-12h at room temperature to obtain a uniform mixed solution; taking 10ml of the uniform mixed solution, placing the uniform mixed solution in a suction cup (with a polytetrafluoroethylene filter membrane) for vacuum suction filtration, naturally drying for 6h, carefully taking the uniform mixed solution off the polytetrafluoroethylene filter membrane, and then drawing, washing and naturally drying for 6h to obtain the filter membrane with the thickness of 10 mu m.
Taking a support piece in a conical tube structure, and coating the prepared filter membrane at the small opening end of the support piece to obtain the membrane filter assembly.
Example 2
Preparing 4 wt% of nano-cellosilk water dispersion, and then dripping the aqueous tannic acid dispersion into the nano-cellosilk water dispersion, wherein the mass of the tannic acid is 10% of that of the nano-cellosilk. Stirring for 6-12h at room temperature to obtain a uniform mixed solution; taking 10ml of the uniform mixed solution, placing the uniform mixed solution in a suction cup (with a polytetrafluoroethylene filter membrane) for vacuum suction filtration, naturally drying for 7h, carefully taking the uniform mixed solution off the polytetrafluoroethylene filter membrane, and then drawing, washing and naturally drying for 7h to obtain the filter membrane with the thickness of 20 mu m.
Taking a support piece in a conical tube structure, and coating the prepared filter membrane at the small opening end of the support piece to obtain the membrane filter assembly.
Example 3
Preparing 8 wt% of nano-cellosilk water dispersion, and then dripping the aqueous tannic acid dispersion into the nano-cellosilk water dispersion, wherein the mass of the tannic acid is 15% of that of the nano-cellosilk. Stirring for 6-12h at room temperature to obtain a uniform mixed solution; taking 10ml of the uniform mixed solution, placing the uniform mixed solution in a suction cup (with a polytetrafluoroethylene filter membrane) for vacuum suction filtration, naturally drying for 8h, carefully taking the uniform mixed solution off the polytetrafluoroethylene filter membrane, and then drawing, washing and naturally drying for 8h to obtain the filter membrane with the thickness of 30 mu m.
Taking a support piece in a conical tube structure, and coating the prepared filter membrane at the small opening end of the support piece to obtain the membrane filter assembly.
Example 4
The membrane module prepared in the embodiment 1-3 is installed at the inlet of the blood pump module of the implanted type left ventricle auxiliary device in a conventional manner, mouse blood is used as a conveying medium, the rotating speed is 1600-2200rpm, the flow rate is 20L/min, the mouse blood can completely pass through the membrane module, no component is lost, and each membrane module can obviously resist escherichia coli and staphylococcus aureus.
Claims (7)
1. The membrane filtering component is characterized by comprising a supporting piece in a conical tube structure and a filtering membrane coated on the small opening end of the supporting piece, wherein the filtering membrane comprises nanofiber filaments and polyphenol compounds, and is combined through hydrogen bonds to form a uniform membrane structure, and the membrane filtering component is prepared by adopting the following steps:
1) preparing nano-fiber filaments and polyphenol compounds into nano-fiber filament dispersion liquid and polyphenol compound dispersion liquid respectively;
2) dropwise adding the polyphenol compound dispersion liquid into the nano-fiber silk dispersion liquid, and stirring to obtain a mixed liquid;
3) filtering and drying the mixed solution to obtain a primary membrane;
4) and (3) drawing, washing and drying the primary membrane to obtain a filtering membrane.
2. The membrane filtration module according to claim 1, wherein the length of the nanofibrous filaments is 20-100 μ ι η, and the mass ratio of nanofibrous filaments to polyphenolic compound is 100: 2.5-15.
3. Membrane filtration module according to claim 1, wherein the membrane-like structure has a thickness of 10-30 μ ι η.
4. The membrane filtration module of claim 1, wherein the polyphenolic compound is tannic acid or dopamine.
5. The membrane filtration module according to claim 1, wherein step 1) uses water as a dispersing agent and the concentration of the nanofiber filament dispersion is 0.3 to 8 wt%.
6. The membrane filtration module according to claim 1, wherein the drying in step 3) is natural drying in the shade for 6-8 h.
7. The membrane filtration module according to claim 1, wherein the drying in step 4) is natural drying in the shade for 6-8 h.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210402061.5A CN114534527B (en) | 2022-04-18 | 2022-04-18 | Membrane filtration assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210402061.5A CN114534527B (en) | 2022-04-18 | 2022-04-18 | Membrane filtration assembly |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114534527A true CN114534527A (en) | 2022-05-27 |
| CN114534527B CN114534527B (en) | 2023-07-04 |
Family
ID=81667673
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210402061.5A Active CN114534527B (en) | 2022-04-18 | 2022-04-18 | Membrane filtration assembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114534527B (en) |
Citations (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104225669A (en) * | 2014-08-25 | 2014-12-24 | 华南理工大学 | Bioactive bacterial cellulose-zein composite film and preparation method thereof |
| CN104321131A (en) * | 2012-05-14 | 2015-01-28 | 芬欧汇川集团 | Method for preparing a membrane from fibril cellulose and fibril cellulose membrane |
| US20160136586A1 (en) * | 2014-11-17 | 2016-05-19 | Amogreentech Co., Ltd. | Membrane and method of manufacturing the same |
| CN106823825A (en) * | 2017-01-19 | 2017-06-13 | 江苏大学 | Graphene oxide membrane based on dopamine biomimetic modification and its preparation method and application |
| CN107335346A (en) * | 2017-08-01 | 2017-11-10 | 东华大学 | A kind of bacteria cellulose nanofiber composite filter membrane and preparation method thereof |
| CN107469645A (en) * | 2017-08-01 | 2017-12-15 | 东华大学 | A kind of small-bore high porosity bacteria cellulose nano-fiber composite film and preparation method thereof |
| CN108721696A (en) * | 2018-06-19 | 2018-11-02 | 佛山皖阳生物科技有限公司 | A kind of preparation method of artificial blood vessel's high mechanical properties fiber type membrane material |
| CN109647225A (en) * | 2019-01-22 | 2019-04-19 | 东华大学 | A kind of compound hemodialysis membrane of nanofiber and its preparation removing channel containing orientation toxin |
| CN111663330A (en) * | 2020-06-19 | 2020-09-15 | 中国林业科学研究院林产化学工业研究所 | Plant tannin mediated super-hydrophobic cellulose material and preparation method and application thereof |
| CN111744363A (en) * | 2020-05-20 | 2020-10-09 | 嘉兴市爵拓科技有限公司 | Composite nanofiltration membrane based on natural polymer |
| CN112920440A (en) * | 2021-04-02 | 2021-06-08 | 北京理工大学 | Nano cellulose base composite membrane and preparation method and application thereof |
| CN113045678A (en) * | 2021-03-15 | 2021-06-29 | 东北林业大学 | Catechol amine modified cellulose material, preparation method thereof and application thereof in filter membrane |
| CN113368710A (en) * | 2021-08-04 | 2021-09-10 | 内蒙古科技大学 | Preparation method of hydrophobic bacterial cellulose aerogel-based air filtering membrane |
| US11167250B1 (en) * | 2019-09-19 | 2021-11-09 | National Technology & Engineering Solutions Of Sandia, Llc | Filtration membranes |
| CN113750827A (en) * | 2021-08-10 | 2021-12-07 | 华南理工大学 | Nanofiber-polydopamine composite membrane and preparation method and application thereof |
| CN113797763A (en) * | 2021-10-12 | 2021-12-17 | 天津工业大学 | Cellulose gel layer modified loose nanofiltration membrane for high-flux dye separation and preparation method and application thereof |
-
2022
- 2022-04-18 CN CN202210402061.5A patent/CN114534527B/en active Active
Patent Citations (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104321131A (en) * | 2012-05-14 | 2015-01-28 | 芬欧汇川集团 | Method for preparing a membrane from fibril cellulose and fibril cellulose membrane |
| CN104225669A (en) * | 2014-08-25 | 2014-12-24 | 华南理工大学 | Bioactive bacterial cellulose-zein composite film and preparation method thereof |
| US20160136586A1 (en) * | 2014-11-17 | 2016-05-19 | Amogreentech Co., Ltd. | Membrane and method of manufacturing the same |
| CN106823825A (en) * | 2017-01-19 | 2017-06-13 | 江苏大学 | Graphene oxide membrane based on dopamine biomimetic modification and its preparation method and application |
| CN107335346A (en) * | 2017-08-01 | 2017-11-10 | 东华大学 | A kind of bacteria cellulose nanofiber composite filter membrane and preparation method thereof |
| CN107469645A (en) * | 2017-08-01 | 2017-12-15 | 东华大学 | A kind of small-bore high porosity bacteria cellulose nano-fiber composite film and preparation method thereof |
| CN108721696A (en) * | 2018-06-19 | 2018-11-02 | 佛山皖阳生物科技有限公司 | A kind of preparation method of artificial blood vessel's high mechanical properties fiber type membrane material |
| CN109647225A (en) * | 2019-01-22 | 2019-04-19 | 东华大学 | A kind of compound hemodialysis membrane of nanofiber and its preparation removing channel containing orientation toxin |
| US11167250B1 (en) * | 2019-09-19 | 2021-11-09 | National Technology & Engineering Solutions Of Sandia, Llc | Filtration membranes |
| CN111744363A (en) * | 2020-05-20 | 2020-10-09 | 嘉兴市爵拓科技有限公司 | Composite nanofiltration membrane based on natural polymer |
| CN111663330A (en) * | 2020-06-19 | 2020-09-15 | 中国林业科学研究院林产化学工业研究所 | Plant tannin mediated super-hydrophobic cellulose material and preparation method and application thereof |
| CN113045678A (en) * | 2021-03-15 | 2021-06-29 | 东北林业大学 | Catechol amine modified cellulose material, preparation method thereof and application thereof in filter membrane |
| CN112920440A (en) * | 2021-04-02 | 2021-06-08 | 北京理工大学 | Nano cellulose base composite membrane and preparation method and application thereof |
| CN113368710A (en) * | 2021-08-04 | 2021-09-10 | 内蒙古科技大学 | Preparation method of hydrophobic bacterial cellulose aerogel-based air filtering membrane |
| CN113750827A (en) * | 2021-08-10 | 2021-12-07 | 华南理工大学 | Nanofiber-polydopamine composite membrane and preparation method and application thereof |
| CN113797763A (en) * | 2021-10-12 | 2021-12-17 | 天津工业大学 | Cellulose gel layer modified loose nanofiltration membrane for high-flux dye separation and preparation method and application thereof |
Non-Patent Citations (6)
| Title |
|---|
| ENGY M. AKL, ET AL.: "Preparation and characterization of novel antibacterial blended films based on modified carboxymethyl cellulose/phenolic compounds", 《POLYMER BULLETIN》 * |
| ENGY M. AKL, ET AL.: "Preparation and characterization of novel antibacterial blended films based on modified carboxymethyl cellulose/phenolic compounds", 《POLYMER BULLETIN》, 3 March 2020 (2020-03-03), pages 1 - 25 * |
| 吴大伟: "植物多酚与粘胶纤维共混成纤及其性能研究", 《中国优秀硕士学位论文全文数据库工程科技I辑》 * |
| 吴大伟: "植物多酚与粘胶纤维共混成纤及其性能研究", 《中国优秀硕士学位论文全文数据库工程科技I辑》, no. 3, 31 March 2012 (2012-03-31), pages 4 * |
| 李璐等: "壳聚糖/胺基化氧化石墨烯复合膜对Cu2+吸附行为的研究", 《现代化工》 * |
| 李璐等: "壳聚糖/胺基化氧化石墨烯复合膜对Cu2+吸附行为的研究", 《现代化工》, vol. 40, no. 8, 31 August 2020 (2020-08-31), pages 167 - 172 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114534527B (en) | 2023-07-04 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Hoenich | Cellulose for medical applications: past, present, and future | |
| AU2006344976B2 (en) | Use of a colloidal suspension of a cationic polymer to treat a support for medical use | |
| CN100467680C (en) | Anti bacteria natural silk composite nano-fiber material and its preparation method | |
| CN100395009C (en) | Antibacterial hollow-fiber membrane, preparation method and application | |
| CN107583472A (en) | A kind of preparation method of nano-cellulose/filter paper combined filtration membrane material | |
| KR102276596B1 (en) | Enzyme-based membrane with antifouling activity for water treatment and method for manufacturing thereof | |
| CN101703893A (en) | Hollow fiber ultrafiltration composite membrane, preparation method and application thereof | |
| CN112717194B (en) | Degradable chitosan-based composite hemostatic film | |
| CN105214508A (en) | Containing the preparation method of the electrostatic spinning milipore filter of bamboo pulp nanofiber element coating | |
| CN110087753A (en) | Filter filtration material, its manufacturing method and the filter unit including it | |
| CN105709613B (en) | A kind of nano-fiber composite film and its preparation method and application effectively removing medium biomolecule | |
| CN109537163A (en) | A kind of chitosan/sodium alginate/polyvinyl alcohol polyelectrolyte nanofibers composite membrane and preparation method thereof | |
| CN105536032A (en) | Preparation method of nanofiber antimicrobial dressing blended from nano-silver containing sericin and polyoxyethylene | |
| CN114534527B (en) | Membrane filtration assembly | |
| CN109806771A (en) | Nanofiber-based compound hemodialysis membrane of one kind and preparation method thereof | |
| CN104368246A (en) | Polyacrylonitrile/cellulose acetate fiber composite hemodialysis membrane and preparation method thereof | |
| CN114558467A (en) | Protein-filtering bacterium-inhibiting hollow fiber membrane and preparation method and application thereof | |
| CN110756066B (en) | Sulfonated citric acid chitosan modified polysulfone hemodialysis membrane and preparation method thereof | |
| CN106606935A (en) | Antibacterial composite hollow fibrous membrane for hemodialysis and preparation method thereof | |
| CN104437127B (en) | A kind of polyester anticoagulation hemodialysis membrane and preparation method thereof | |
| CN110791829B (en) | Preparation method and application of nano antibacterial fiber | |
| CN107684636A (en) | A kind of bactericidal composition and as the bacteria cellulose antimicrobial composite material obtained by it | |
| CN215138695U (en) | Filtering membrane based on silver ion antibacterial function | |
| Yao et al. | Membranes for the life sciences and their future roles in medicine | |
| CN113069935A (en) | Filtering membrane based on silver ion antibacterial function and preparation method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |