CN104610565A - Macromolecule porous film preparation method - Google Patents
Macromolecule porous film preparation method Download PDFInfo
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- CN104610565A CN104610565A CN201310541647.0A CN201310541647A CN104610565A CN 104610565 A CN104610565 A CN 104610565A CN 201310541647 A CN201310541647 A CN 201310541647A CN 104610565 A CN104610565 A CN 104610565A
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Abstract
The present invention discloses a macromolecule porous film material preparation method, and belongs to the technical field of functional materials. The preparation method comprises: 1, mixing and dissolving macromolecule materials with different molecular weights in a good solvent according to a certain mass ratio to prepare a PS solution with a certain concentration; 2, mixing the PS solution in the step 1 and water according to a certain ratio, and adopting a scrapping plate method to prepare a macromolecule film with the micrometer-scale thickness on a substrate; and 3, drying the macromolecule film sample prepared in the step 2 for a certain time at a room temperature to obtain the micro-nano-scale porous film with uniform pore size distribution. The method of the present invention has advantages of simple process, low energy consumption, high efficiency and the like.
Description
Technical field
The present invention relates to a kind of method preparing high-molecular porous film, belong to technical field of function materials.
Background technology
Highly ordered porous materials is the novel nano structure material risen rapidly the nineties in 20th century, and it obtains international physics, chemistry and the great attention of material educational circles once being born, and develops rapidly and become one of study hotspot interdisciplinary.Its distinguishing feature of nano ordered porous material is exactly queueing discipline, pore passage structure size is adjustable and specific surface area is larger etc.Then make it in separation, absorption, catalysis, biology, medical science etc., have huge application potential.At chemical industry, information communication, biotechnology, the fields such as environmental energy have important using value.
Porous-film and corresponding membrane separation technique comprise micro-filtration, ultrafiltration, electrodialysis, reverse osmosis etc. and have been widely used in the fields such as food, medical and health, biotechnology, chemical industry, environment, play more and more important effect.As the porous material of solid support material, both can be used as support of the catalyst and also can be used as pharmaceutical carrier.In addition, porous material can be used as efficient air liquid phase column material, sensor sensitive material, special cells material, the protective layer material even in enzyme or albumen transport process.Meanwhile, multiple dimensioned ordered porous membrane material can be used as support of the catalyst, dye-sensitized solar cell anode, membrane reactor etc., and also has potential application prospect in ion-exchange, stratographic analysis, sensor.
Extensively launch the research of highly ordered porous materials, by the effort of scientific worker, this field makes significant progress.But, because the research of each side such as preparation, character, function of highly ordered porous materials needs comprehensive chemistry and physical knowledge, thus still there is the problem that some need to solve.Porous material preparation method is a lot, and conventional has phase inversion method, phase separation method, sol-gel method, macromole rigging method, solvent pore and solvent-nonsolvent effect etc.And the formation of micron and nanostructure has indentation method, phase separation method, emulsion polymerization, masterplate method, etching method, self-assembly method etc. usually.These methods often operating process more complicated, consumes energy high, and the used time is of a specified duration, and how seeking method more simple to operation is prepare the key issue of porous membrane.Research finds that water droplet template has dynamic regulation and control, condensing water droplet self-assembly from bottom to top because of it, and does not need the advantages such as extra removal as the water droplet of template, is a kind of simple and convenient, constructs ordered porous membrane method efficiently.
Summary of the invention
The object of this invention is to provide a kind of method preparing high-molecular porous film.
The technical solution used in the present invention is to provide a kind of method preparing high-molecular porous film, and the method step is as follows:
1) preparation of polymers soln: the good solvent choosing macromolecular material; The macromolecular material of different molecular weight is pressed certain mass than mixed dissolution in good solvent, configure certain density PS solution;
2) preparation of polymeric membrane: mixed with certain proportion with water by PS solution, is coated on substrate by the method for the solution physics prepared or chemistry;
3) preparation of high-molecular porous film: high molecular film material is placed under room temperature dry, obtains high-molecular porous film.
Adopt the high-molecular porous film of water droplet template synthesis, described macromolecule member material thing is selected from polystyrene, polyethylene, polypropylene, polyvinyl chloride, polyvinylidene difluoride (PVDF), polyethylene terephthalate, rhodia, Mierocrystalline cellulose, polyvinyl alcohol, nylon, polymethacrylate, polycarbonate, polyphenylene oxide, polyoxymethylene, polyimide, polyacrylonitrile, polyvinylacetate, resol.
Described method is water droplet template.
Described polymeric membrane obtains by physics or chemical process.
Described good solvent will select volatile organic solvent.
Described polymers soln and water need to stir until form homogeneous suspension liquid.
The high-molecular porous membrane pore size controlled range of described preparation is 1um-300um.
The invention has the beneficial effects as follows:
1) can prepare multiple high-molecular porous film, applied range, which greatly simplifies technological process;
2) have multiple, so preparation process should select volatile organic good solvent due to a kind of high molecular solvent can be dissolved;
3) water droplet template has dynamic regulation and control, condensing water droplet self-assembly from bottom to top because of it, and does not need the advantages such as extra removal as the water droplet of template, is a kind of simple and convenient, constructs ordered porous membrane method efficiently, greatly reduce energy consumption and time.
Accompanying drawing explanation
Fig. 1 is polystyrene porous membrane environmental scanning electron microscope picture prepared by embodiment 1.
Embodiment
Adopting water droplet template, is that high-molecular porous film prepared by raw material with high polymer material.
Below in conjunction with embodiment, the invention will be further described, can better understand the present invention and can be implemented, but illustrated embodiment is not as a limitation of the invention to make those skilled in the art.
Embodiment 1
A preparation method for high-molecular porous film, the method step is as follows:
1) preparation of polymers soln
Be 200kDa polystyrene by the molecular weight that Britain Goodfellow Co.Ltd. produces be that 30KDa polystyrene mixes with toluene with 3: 1 with laboratory synthetic molecular weight, configuration concentration is 20% polymers soln.
2) polymeric membrane preparation
20% polymers soln is mixed with 7: 3 ratios with water, is stirred to the suspension liquid forming homogeneous dispersion, be 400 μm of film spreader knifing with thickness, obtain PS film.
3) preparation of high-molecular porous film
Dry under PS film being placed in room temperature, after water volatilization, obtain PS porous-film.
Fig. 1 is the environmental scanning electronic microscope figure of the PS porous film surface of preparation, and as seen from the figure, obtained porous-film pore size distribution is narrower, and basic controlling is at 1 μm-300 μm, and hole density is comparatively large, has good application potential.
As seen from the above-described embodiment, prepared PS porous-film has narrower pore size distribution, has larger practical value.And the water droplet template time is short, simple to operate, to reducing costs, there is great help.
Claims (7)
1. prepare a method for high-molecular porous film, it is characterized in that, the method step is as follows,
1) preparation of polymers soln: the good solvent choosing macromolecular material; The macromolecular material of different molecular weight is pressed certain mass than mixed dissolution in good solvent, configure certain density PS solution;
2) preparation of polymeric membrane: mixed with certain proportion with water by PS solution, is coated on substrate by the method for the solution physics prepared or chemistry;
3) preparation of high-molecular porous film: high molecular film material is placed under room temperature dry, obtains high-molecular porous film.
2. a kind of method preparing high-molecular porous film according to claim 1, is characterized in that, described macromolecular material is polystyrene, polyethylene, polypropylene, polyvinyl chloride, polyvinylidene difluoride (PVDF), polyethylene terephthalate, rhodia, Mierocrystalline cellulose, polyvinyl alcohol, nylon, polymethacrylate, polycarbonate, polyphenylene oxide, polyoxymethylene, polyimide, polyacrylonitrile, polyvinylacetate, resol.
3. a kind of method preparing high-molecular porous film according to claim 1, is characterized in that, described method is water droplet template.
4. a kind of method preparing high-molecular porous film according to claim 1, is characterized in that, described polymeric membrane obtains by physics or chemical process.
5. a kind of method preparing high-molecular porous film according to claim 1, is characterized in that, wet gas environments is formed by directly being added in polymers soln by water.
6. a kind of method preparing high-molecular porous film according to claim 1, is characterized in that, the water added is not only for film forming provides humidity but also be the pore-creating agent of film.
7. a kind of method preparing high-molecular porous film according to claim 1, is characterized in that, prepared high-molecular porous membrane pore size controlled range is 1 μm-300 μm.
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105600741A (en) * | 2015-12-28 | 2016-05-25 | 上海理工大学 | Method for preparing ordered polymer template |
| WO2017143833A1 (en) * | 2016-02-22 | 2017-08-31 | 深圳市启德环保科技有限公司 | Preparation method of pressure-resistant porous macromolecular pmma filter membrane material |
| CN109319725A (en) * | 2018-10-10 | 2019-02-12 | 北京航空航天大学 | A kind of micron order pit generation method based on solvent evaporation |
| CN109659589A (en) * | 2017-10-11 | 2019-04-19 | 中国科学院大连化学物理研究所 | The screening technique of flow battery polyalcohol stephanoporate ion-conductive membranes in a kind of solvent treatment process |
| CN110016222A (en) * | 2019-04-15 | 2019-07-16 | 扬州大学 | Sterilize breathable films and its preparation method and application |
| CN110483924A (en) * | 2019-08-21 | 2019-11-22 | 陕西科技大学 | A kind of super-hydrophobic automatic cleaning radiation cooling film and preparation method thereof |
| CN112080853A (en) * | 2020-07-23 | 2020-12-15 | 山东泰鹏环保材料股份有限公司 | Four-stage porous PET (polyethylene terephthalate) non-woven fabric for filtration and preparation method and application thereof |
-
2013
- 2013-11-01 CN CN201310541647.0A patent/CN104610565A/en active Pending
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105600741A (en) * | 2015-12-28 | 2016-05-25 | 上海理工大学 | Method for preparing ordered polymer template |
| CN105600741B (en) * | 2015-12-28 | 2018-07-06 | 上海理工大学 | A kind of method for preparing ordered polymer template |
| WO2017143833A1 (en) * | 2016-02-22 | 2017-08-31 | 深圳市启德环保科技有限公司 | Preparation method of pressure-resistant porous macromolecular pmma filter membrane material |
| CN109659589A (en) * | 2017-10-11 | 2019-04-19 | 中国科学院大连化学物理研究所 | The screening technique of flow battery polyalcohol stephanoporate ion-conductive membranes in a kind of solvent treatment process |
| CN109319725A (en) * | 2018-10-10 | 2019-02-12 | 北京航空航天大学 | A kind of micron order pit generation method based on solvent evaporation |
| CN109319725B (en) * | 2018-10-10 | 2020-09-11 | 北京航空航天大学 | Micron-sized pit generation method based on solvent evaporation |
| CN110016222A (en) * | 2019-04-15 | 2019-07-16 | 扬州大学 | Sterilize breathable films and its preparation method and application |
| CN110016222B (en) * | 2019-04-15 | 2021-09-28 | 扬州大学 | Bactericidal breathable film and preparation method and application thereof |
| CN110483924A (en) * | 2019-08-21 | 2019-11-22 | 陕西科技大学 | A kind of super-hydrophobic automatic cleaning radiation cooling film and preparation method thereof |
| CN110483924B (en) * | 2019-08-21 | 2021-06-15 | 陕西科技大学 | Super-hydrophobic self-cleaning radiation cooling film and preparation method thereof |
| CN112080853A (en) * | 2020-07-23 | 2020-12-15 | 山东泰鹏环保材料股份有限公司 | Four-stage porous PET (polyethylene terephthalate) non-woven fabric for filtration and preparation method and application thereof |
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Application publication date: 20150513 |