CN101992034A - Hydrophilic modification method for polyether sulfone microporous film - Google Patents
Hydrophilic modification method for polyether sulfone microporous film Download PDFInfo
- Publication number
- CN101992034A CN101992034A CN200910100945XA CN200910100945A CN101992034A CN 101992034 A CN101992034 A CN 101992034A CN 200910100945X A CN200910100945X A CN 200910100945XA CN 200910100945 A CN200910100945 A CN 200910100945A CN 101992034 A CN101992034 A CN 101992034A
- Authority
- CN
- China
- Prior art keywords
- film
- ozone
- hydrophilic
- polyether sulfone
- microporous membrane
- 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.)
- Pending
Links
Images
Landscapes
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
The invention provides a method for preparing a hydrophilic polyether sulfone microporous film. The method comprises the following steps of: spreading a hydrophobic polyether sulfone filter film; and making a mixture of ozone/oxygen continuously penetrate the filter film at enough temperature, and oxidizing a surface layer group of the filter film by using strong oxidizing property of the ozone so as to generate a polar hydrophilic group and fulfill the aim of hydrophilic modification of the hydrophobic film. The modified film can be directly collected and coiled, and residual ozone on the film can be automatically degraded into oxygen. The technical method does not need to add other chemical reagents or perform soaking, washing, drying and other processes on the filter film, the technical process is simple, energy-saving and environment-friendly, and a finished hydrophilic film has no secondary pollution and obvious superiority and industrial value.
Description
Technical field
The present invention relates to a kind of method of microporous membrane of polyethersulfone hydrophilic modifying.
Background technology
Polyethersulfone resin (PES) is a kind of outstanding macromolecular material, is the thermoplastic macromolecule material of Britain ICI company at a kind of excellent combination property of exploitation in 1972, is one of special engineering plastics few in number that is applied at present.It has good heat resistance, physical and mechanical properties, insulating properties etc., particularly has can at high temperature use continuously and still can keep outstanding advantages such as stable performance in temperature environment jumpy, is used widely in a lot of fields.Same use microporous membrane of polyethersulfone that polyethersulfone resin produces can high temperature, and various acid-base conditions under stable the use, be widely used in high accuracy liquid filtering fields such as medicine, electronics.Polyethersulfone resin is a kind of hydrophobic material, and hydrophobic polyether sulfone filter membrane has very big shortcoming in the use, as needs before using to soak into low surface tension solvent such as ethanol, on the other hand, as well known to those skilled in the art, hydrophobic membrane is than the easier contamination and plugging of hydrophilic membrane, so that service life is short.So commercial microporous membrane of polyethersulfone generally all is a hydrophilic filter membrane.
The polyether sulfone hydrophilic membrane preparation of known patent and bibliographical information has following method usually: polyethersulfone resin and hydrophilic high molecular polymer blend are prepared hydrophilic membrane 1., as German membrana company polyethersulfone resin and hydrophilic sulfonated polyether sulfone resin alloy are prepared hydrophilic membrane, United States Patent (USP) 4943374 prepares hydrophilic membrane with hydrophilic high mol blend such as polyether sulfone and polyethylene glycol, polyvinylpyrrolidones.United States Patent (USP) 5178765 prepares hydrophilic membrane etc. with polyether sulfone and poly--2-oxazole woods, polyvinylpyrrolidone blend.Its main feature is to utilize the hydrophilic macromolecule in the blend film to reach hydrophilic purpose.The shortcoming of this method is in order to reach hydrophilic purpose, usually need to add in a large number hydrophilic additive, but this can influence the otherwise performance of poly (ether sulfone) film, such as resistance to acids and bases and mechanical strength or the like.2. prepare hydrophilic polyether sulfone film by on finished product polyether sulfone hydrophobic membrane, applying (COATING) one deck hydrophilic substance, usually at the little molecular surface active agent of finished film surface-coated one deck, hydrophilizing agent, as: dodecyl sodium sulfate, glycerine etc.The hydrophilic membrane of this method preparation, the hydrophily of film can in use die down usually, and can form the hydrophilizing agent pollution to filtrate.Further method is to apply the macromolecule network cross-linked hydrophilic material that one deck is difficult for loss, as cross-linking polyvinyl alcohol etc., United States Patent (USP) 6465050 uses polyethylene glycol oxides (Polyalkylene oxide) and monomer triethylene glycol diacrylate (TEGDA) polymerization formation network to realize that poly (ether sulfone) film is hydrophilic.3. utilize technology activation polyether sulfone hydrophobic membrane surfaces such as plasma, high-energy ray, make it the purpose that grafting hydrophilic group reaches hydrophilic modifying.This method energy consumption is big, and damages finished film probably.At present, also do not hear example by the method preparation of industrialization hydrophilic polyether sulfone film.4. carry out hydrophilic modifying by the method for oxidation hydrophobicity poly (ether sulfone) film, the method is utilized strong oxidizer appropriateness oxide-film surface, make it the polarization hydrophilic radical and reach hydrophilic purpose, patent application CN101068612A discloses and has a kind ofly realized hydrophilic method with strong oxidizer oxidation poly (ether sulfone) film, comprise a series of processes such as film infiltration, oxidation, heated oxide, cleaning, oven dry, this complex technical process.
Summary of the invention
The invention provides a kind of method of microporous membrane of polyethersulfone hydrophilic modifying, this technical matters process is simple, does not need steps such as infiltration, cleaning, oven dry, and energy-conserving and environment-protective, the finished product non-secondary pollution.The inventive method: under sufficient temperature, allow the mixture of ozone/oxygen gas continue to see through the polyether sulfone hydrophobic membrane, thereby the oxide-film surface makes it the polarization hydrophilic radical, reaches hydrophilic purpose.Ozone has very high oxidation-reduction potential (2.07V), has extremely strong oxidation activity, under normal temperature and pressure conditions, can produce oxidation to poly (ether sulfone) film, ozone can be decomposed into oxygen gradually under normal temperature and pressure conditions simultaneously, half-life is 16 hours, so the filter membrane after the ozone treatment need not postprocessing working procedures such as cleaning, oven dry, also can not produce secondary pollution to film.
Further, the present invention can produce continuously, may further comprise the steps:
(1) rolling polyether sulfone dry film is placed unreeling structure,, import rolling-up mechanism by confined chamber.
(2) feed the mixture of ozone/oxygen gas by air blast to the upstream of film in closed, simultaneously, winding mechanism starts, and makes filter membrane at the uniform velocity by confined chamber, gets back to air blast at the mixture of film downstream water conservancy diversion ozone/oxygen gas, recycles.
(3) film after oxidation processes is collected at another side and is reeled.
(4) ozone generator is used to produce ozone, in time the ozone that loses in the replenishment cycles oxidizing process.
Description of drawings
Fig. 1 is the continuous production procedure schematic diagram of the present invention;
Wherein, 1-ozone generator, 2-air blast, 3-confined chamber, 4-unreeling machine, 5-winder, 6-pipeline
The specific embodiment
In the mode of embodiment the present invention is further set forth below, but these embodiments do not limit the scope of the present invention.
The hydrophobic filter membrane of preparation polyether sulfone: admixtured polyether sulphone resin (mean molecule quantity 58000), dimethyl formamide, Macrogol 200, three's mass ratio is 15: 55: 30, be heated to 80 ℃, make polyether sulfone be dissolved as the transparent clear viscous solution fully, the mixed solution of cooling is poured on the glass plate, wipe off with metallic spatula, the gap between scraper and the glass plate is about 300 microns.Glass plate is placed room temperature, and following 30 minutes of relative humidity 70% left and right sides environment immerses in the water then, soaks 3 hours, cleans oven dry.Above-mentioned film punching out is become the film disk of diameter 47mm, immerse in the water, diaphragm can not be by water infiltration, and pure water can not pass through diaphragm under pressure 0.01MPA condition.
Oxidation processes is got above-mentioned diaphragm, and under 20 ℃ of conditions of room temperature, the ozone concentration that feeds 20 ℃ of temperature with the 1.5L/h flow is the ozone/oxygen mixture of 60mg/l, continues 10 minutes.Film is taken out the back immerse in the water, diaphragm at once can be by water infiltration, and 50 ml pure waters are through passing through diaphragm in 20 seconds under pressure 0.01MPA condition.
Get the hydrophobic diameter 47mm film disk that embodiment 1 produces, under 30 ℃ of conditions of room temperature, the ozone concentration that feeds 30 ℃ of temperature with the 1.5L/h flow is the ozone/oxygen mixture of 60mg/l, continues 5 minutes.Film is taken out the back immerse in the water, diaphragm at once can be by water infiltration, and 50 ml pure waters are through passing through diaphragm in 20 seconds under pressure 0.01MPA condition.
Claims (6)
1. the method for a microporous membrane of polyethersulfone hydrophilic modifying, its feature comprises the following steps:
(1) poly (ether sulfone) film is sprawled;
(2) under sufficient temperature, allow the mixture of ozone/oxygen gas continue to see through filter membrane;
(3) filter membrane rolling finished product.
2. the method for microporous membrane of polyethersulfone hydrophilic modifying according to claim 1 is characterized in that: the concentration of ozone is 10-200mg/L in the ozone/oxygen mixture in the step (2).
3. the method for microporous membrane of polyethersulfone hydrophilic modifying according to claim 1 is characterized in that: the penetration speed of ozone/oxygen mixture is 0-12m/h in the step (2).
4. the method for microporous membrane of polyethersulfone hydrophilic modifying according to claim 1 is characterized in that: the duration that sees through ozone/oxygen mixture in the step (2) is 2-300min.
5. the method for microporous membrane of polyethersulfone hydrophilic modifying according to claim 1 is characterized in that: step (2) mesopodium temperature condition is 15-60 ℃.
6. the method for microporous membrane of polyethersulfone hydrophilic modifying according to claim 1 is characterized in that: ozone/oxygen mixture can be recycled in the step (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910100945XA CN101992034A (en) | 2009-08-10 | 2009-08-10 | Hydrophilic modification method for polyether sulfone microporous film |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910100945XA CN101992034A (en) | 2009-08-10 | 2009-08-10 | Hydrophilic modification method for polyether sulfone microporous film |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101992034A true CN101992034A (en) | 2011-03-30 |
Family
ID=43783080
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200910100945XA Pending CN101992034A (en) | 2009-08-10 | 2009-08-10 | Hydrophilic modification method for polyether sulfone microporous film |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101992034A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109058169A (en) * | 2018-10-16 | 2018-12-21 | 百特（福建）智能装备科技有限公司 | Cold wind access device |
| CN109224876A (en) * | 2018-11-26 | 2019-01-18 | 迈凯特殊材料（苏州工业园区）有限公司 | A kind of hydrophilic polysulfone membrane preparation method and applications |
-
2009
- 2009-08-10 CN CN200910100945XA patent/CN101992034A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109058169A (en) * | 2018-10-16 | 2018-12-21 | 百特（福建）智能装备科技有限公司 | Cold wind access device |
| CN109058169B (en) * | 2018-10-16 | 2024-02-20 | 宜宾五粮液股份有限公司 | Cold air access device |
| CN109224876A (en) * | 2018-11-26 | 2019-01-18 | 迈凯特殊材料（苏州工业园区）有限公司 | A kind of hydrophilic polysulfone membrane preparation method and applications |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105727752B (en) | A kind of preparation method and product of high-intensity anti-pollution antibacterial hollow fiber nanofiltration membrane | |
| CN103055714B (en) | Method for preparing hydrophilic electrical charge separation film by using one-step method as well as product and application thereof | |
| EP1654053B1 (en) | Hollow fibre membrane comprising pvme and method of production | |
| KR101409712B1 (en) | Porous membrane of vinylidene fluoride resin and process for producing the same | |
| EP1678245B1 (en) | Microporous pvdf films and method of manufacturing | |
| CN101068612B (en) | Method for preparing hydrophilic polyethersulfone membrane | |
| CN101721928B (en) | High-strength and hydrophilic polysulfone hollow fiber ultrafiltration membrane | |
| NZ555302A (en) | Post treatment of microfiltration membranes with hyfrogen peroxide and a transition metal catalyst | |
| DE2735887A1 (en) | HYDROPHILIC POROESE STRUCTURES AND PROCEDURES FOR THEIR PRODUCTION | |
| CN111420560B (en) | Preparation method of low-pressure positively-charged nanofiltration membrane, product and application thereof | |
| WO2005014151A1 (en) | The preparation method of exo-pressure type poly(vinylidene fluoride) hollow fiber membrane spinned utilizing a immersion-coagulation method and the product thereof | |
| CN102824859B (en) | Method for preparing hollow fiber nanofiltration membrane by using thermally induced phase separation/interface cross linking synchronization method | |
| CN111111478A (en) | Preparation method of PVDF-based cation exchange membrane | |
| CN104117294A (en) | Preparation method for hydrophilia polyvinylidene fluoride hollow fiber membrane | |
| CN106731901A (en) | Polyester fiber weaves the preparation method of tube enhancement type composite hollow fibre forward osmosis membrane | |
| CN107486041B (en) | Ultra-low pressure composite reverse osmosis membrane and preparation method thereof | |
| CN114950150A (en) | Extremely-low-pressure reverse osmosis membrane and preparation method thereof | |
| CN101992034A (en) | Hydrophilic modification method for polyether sulfone microporous film | |
| CN112657343A (en) | Polyamide hollow fiber composite separation membrane and preparation method thereof | |
| CN107437600B (en) | Framework and gel matrix integrated lithium ion battery active diaphragm and preparation method thereof | |
| JPH038421A (en) | Hydrophilic porous membrane and production thereof | |
| CN102029114A (en) | Hydrophilic hollow fiber membrane and preparation method thereof | |
| CN107551833A (en) | A kind of double modified hollow fiber ultrafiltration membranes and preparation method thereof | |
| JP2004290751A (en) | Method for manufacturing steam permeable membrane | |
| CN103285743B (en) | Hydrophilization modification method for polyvinyl chloride alloy ultrafiltration membrane |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20110330 |