CN105413478A - Antibacterial multicomponent composite hollow fiber filtering membrane preparation method - Google Patents
Antibacterial multicomponent composite hollow fiber filtering membrane preparation method Download PDFInfo
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- CN105413478A CN105413478A CN201510747592.8A CN201510747592A CN105413478A CN 105413478 A CN105413478 A CN 105413478A CN 201510747592 A CN201510747592 A CN 201510747592A CN 105413478 A CN105413478 A CN 105413478A
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- 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
- B01D69/08—Hollow fibre membranes
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- 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
-
- 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
- B01D69/08—Hollow fibre membranes
- B01D69/087—Details relating to the spinning process
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- 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
- B01D71/30—Polyalkenyl halides
- B01D71/32—Polyalkenyl halides containing fluorine atoms
- B01D71/34—Polyvinylidene fluoride
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2323/00—Details relating to membrane preparation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2325/00—Details relating to properties of membranes
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- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Artificial Filaments (AREA)
Abstract
The invention discloses an antibacterial multicomponent composite hollow fiber filtering membrane preparation method which includes the steps: (1) dissolving a substrate; (2) preparing regenerated cellulose pulp; (3) preparing a membrane casting solution; (4) carrying out spinning; (5) forming a finished product. According to the nano-filtration level antibacterial multicomponent composite hollow fiber filtering membrane preparation method, by means of reasonable raw material selection and formula design, on one hand, the preparation process is simple, reasonable and easy to implement; on the other hand, a prepared hollow fiber filtering membrane has excellent structural strength and fine antibacterial performance, is easy to degrade and fine in filtering effect, reaches a nano-filtration level and can accurately filter sewage.
Description
Technical field
The present invention relates to fiber filter film field, particularly relate to a kind of preparation method of antimicrobial form multiple elements design hollow filtration membrane.
Background technology
Membrane separation technique has efficient, energy-conservation, equipment and simple operation and other advantages, becomes the separation process that the aspects such as chemical industry, food processing, wastewater treatment, medical science are important gradually.Existing diffusion barrier comprises organic film, inoranic membrane and composite membrane.Wherein, the advantage of organic film is that description of materials is many, easy modification, and pliability is good, low price, can be made into various forms of membrane module; Shortcoming is non-refractory, pH value narrow application range, and pore-size distribution is wide, and mechanical strength is low, and permeability is low, is soluble in the shortcomings such as organic solvent; The advantage of inoranic membrane is high temperature resistant, strong acid, highly basic, organic solvent and resistance to microbial attack, mechanical strength is high, pore-size distribution is narrow; Shortcoming is filming technology complexity (roasting), the poor reproducibility of film, preparation small-bore film difficulty, pliability is poor, cost is high, the component assembling difficulty made; Composite membrane has pliability, good chemical stability, and its mechanical strength, between organic film and inoranic membrane, is prepared fairly simple, and it compensate for the deficiency of organic film and inoranic membrane, applies more extensive.
But existing filtration film strength is not high, easy breakage, service life is short, and there is not anti-microbial property in film, after repeatedly using, secondary pollution may be produced, and it is antibacterial modified to carry out enhancing by conventional inorganic raw material, affect filter membrane on the one hand and use the degradation property after discarding, increase the difficulty of manufacturing process on the other hand.
Summary of the invention
The technical problem that the present invention mainly solves is to provide a kind of preparation method of antimicrobial form multiple elements design hollow filtration membrane, can solve existing filter membrane above shortcomings part.
For solving the problems of the technologies described above, the technical scheme that the present invention adopts is: the preparation method providing a kind of antibiotic property multiple elements design hollow filtration membrane, comprises the steps:
(1) matrix dissolution: the antiblocking agent of the PVC of the PVDF of 40 ~ 60 weight portions, 10 ~ 30 weight portions, the TPU of 20 ~ 40 parts, the coalescents of 5 ~ 15 parts and 1 ~ 3 part is dissolved in the first solvent, stirring at a set temperature, obtain homogeneous Matrix Solution, standing and defoaming;
(2) regenerated cellulose slurries are prepared: being dissolved by the regenerated celulose fibre of 30 ~ 50 parts with the second solvent, obtaining homogeneous solution, standing and defoaming through stirring;
(3) casting solution is prepared: joined in the Matrix Solution in step (1) by the antioxidant of the regenerated cellulose slurries of preparation in step (2) together with 3 ~ 10 parts, stir and evenly mix, and ultrasonic disperse, obtain casting solution;
(4) spinning: adopt inversion of phases spin processes that the casting solution in step (3) is spun to hollow fiber filtering membrane;
(5) finished product: the hollow filtration membrane obtained in step (4) is placed in deionized water and soaks, removes the first solvent and the second solvent, dries and obtains described antibiotic property multiple elements design hollow filtration membrane.
In a preferred embodiment of the present invention, in described step (1), described first solvent is dimethyl formamide; Described temperature is 85 ~ 90 DEG C, and stir speed (S.S.) is 30 ~ 50r/min.
In a preferred embodiment of the present invention, in described step (2), described second solvent is the mixed liquor that dimethyl formamide mixes with the volume ratio of 1:1 with LiCl.
In a preferred embodiment of the present invention, in described step (2), described regenerated celulose fibre is the mixture that viscose chitin fibre and bamboo fibre mix with the weight ratio of 2 ~ 3:1.
In a preferred embodiment of the present invention, in described step (4), the spinning temperature of described casting solution is 70 ~ 80 DEG C.
The invention has the beneficial effects as follows: the preparation method of a kind of nanofiltration level of the present invention antibiotic property multiple elements design hollow filtration membrane, selected and formula Design by rational raw material, make preparation technology's advantages of simple on the one hand, easy to implement, hollow fiber filtering membrane simultaneously also possesses excellent structural strength and good anti-microbial property, be easy to degraded, and this doughnut reaches nanofiltration level, accurately can filter sewage, good filtration effect.
Detailed description of the invention
Below preferred embodiment of the present invention is described in detail, can be easier to make advantages and features of the invention be readily appreciated by one skilled in the art, thus more explicit defining is made to protection scope of the present invention.
The embodiment of the present invention comprises:
Embodiment 1
Present invention is disclosed a kind of nanofiltration level antibiotic property multiple elements design hollow filtration membrane, comprise following parts by weight of component: PVDF40 part, PVC10 part, TPU20 part, regenerated celulose fibre 30 parts, film forming agent PVP5 part, 3 parts, antioxidant; Described regenerated celulose fibre is antibiotic property regenerated celulose fibre, specifically comprises viscose chitin fibre and bamboo fibre that weight ratio is 2:1.
The preparation method of above-mentioned antibiotic property multiple elements design hollow filtration membrane, step is as follows:
(1) matrix dissolution: the antiblocking agent of the PVC of the PVDF of 40 weight portions, 10 weight portions, the TPU of 20 parts, the coalescents of 5 parts and 1 part is dissolved in dimethyl formamide, at 85 DEG C, stir under the stir speed (S.S.) of 30r/min, obtain homogeneous Matrix Solution, standing and defoaming;
(2) regenerated cellulose slurries are prepared: dissolved by the regenerated celulose fibre of 30 parts in the mixed liquor that dimethyl formamide and LiCl mix with the volume ratio of 1:1, obtain homogeneous solution, standing and defoaming through stirring;
(3) casting solution is prepared: joined in the Matrix Solution in step (1) by the antioxidant of the regenerated cellulose slurries of preparation in step (2) together with 3 parts, stir and evenly mix, and ultrasonic disperse, obtain casting solution;
(4) spinning: adopt inversion of phases spin processes that the casting solution in step (3) is spun to hollow fiber filtering membrane at 70 DEG C;
(5) finished product: the hollow filtration membrane obtained in step (4) is placed in deionized water and soaks, removes the first solvent and the second solvent, dries and obtains described antibiotic property multiple elements design hollow filtration membrane.
Embodiment 2
Present invention is disclosed a kind of nanofiltration level antibiotic property multiple elements design hollow filtration membrane, comprise following parts by weight of component: PVDF60 part, PVC30 part, TPU40 part, regenerated celulose fibre 50 parts, film forming agent 15 parts, 10 parts, antioxidant; Described regenerated celulose fibre is antibiotic property regenerated celulose fibre, specifically comprises viscose chitin fibre and bamboo fibre that weight ratio is 3:1.
The preparation method of above-mentioned antibiotic property multiple elements design hollow filtration membrane, step is as follows:
(1) matrix dissolution: the antiblocking agent of the PVC of the PVDF of 60 weight portions, 30 weight portions, the TPU of 40 parts, the coalescents of 15 parts and 3 parts is dissolved in dimethyl formamide, at 90 DEG C, stir under the stir speed (S.S.) of 50r/min, obtain homogeneous Matrix Solution, standing and defoaming;
(2) regenerated cellulose slurries are prepared: dissolved by the regenerated celulose fibre of 50 parts in the mixed liquor that dimethyl formamide and LiCl mix with the volume ratio of 1:1, obtain homogeneous solution, standing and defoaming through stirring;
(3) casting solution is prepared: joined in the Matrix Solution in step (1) by the antioxidant of the regenerated cellulose slurries of preparation in step (2) together with 10 parts, stir and evenly mix, and ultrasonic disperse, obtain casting solution;
(4) spinning: adopt inversion of phases spin processes that the casting solution in step (3) is spun to hollow fiber filtering membrane at 80 DEG C;
(5) finished product: the hollow filtration membrane obtained in step (4) is placed in deionized water and soaks, removes the first solvent and the second solvent, dries and obtains described antibiotic property multiple elements design hollow filtration membrane.
Embodiment 3
Be with the difference of embodiment 1, described antibiotic property multiple elements design hollow filtration membrane comprises following parts by weight of component: PVDF50 part, PVC20 part, TPU30 part, regenerated celulose fibre 40 parts, film forming agent 10 parts, 8 parts, antioxidant.
The foregoing is only embodiments of the invention; not thereby the scope of the claims of the present invention is limited; every utilize description of the present invention to do equivalent structure or equivalent flow process conversion; or be directly or indirectly used in other relevant technical fields, be all in like manner included in scope of patent protection of the present invention.
Claims (5)
1. a preparation method for antibiotic property multiple elements design hollow filtration membrane, is characterized in that, comprises the steps:
(1) matrix dissolution: the antiblocking agent of the PVC of the PVDF of 40 ~ 60 weight portions, 10 ~ 30 weight portions, the TPU of 20 ~ 40 parts, the coalescents of 5 ~ 15 parts and 1 ~ 3 part is dissolved in the first solvent, stirring at a set temperature, obtain homogeneous Matrix Solution, standing and defoaming;
(2) regenerated cellulose slurries are prepared: being dissolved by the regenerated celulose fibre of 30 ~ 50 parts with the second solvent, obtaining homogeneous solution, standing and defoaming through stirring;
(3) casting solution is prepared: joined in the Matrix Solution in step (1) by the antioxidant of the regenerated cellulose slurries of preparation in step (2) together with 3 ~ 10 parts, stir and evenly mix, and ultrasonic disperse, obtain casting solution;
(4) spinning: adopt inversion of phases spin processes that the casting solution in step (3) is spun to hollow fiber filtering membrane;
(5) finished product: the hollow filtration membrane obtained in step (4) is placed in deionized water and soaks, removes the first solvent and the second solvent, dries and obtains described antibiotic property multiple elements design hollow filtration membrane.
2. the preparation method of antibiotic property multiple elements design hollow filtration membrane according to claim 1, is characterized in that, in described step (1), described first solvent is dimethyl formamide; Described temperature is 85 ~ 90 DEG C, and stir speed (S.S.) is 30 ~ 50r/min.
3. the preparation method of antibiotic property multiple elements design hollow filtration membrane according to claim 1, is characterized in that, in described step (2), described second solvent is the mixed liquor that dimethyl formamide mixes with the volume ratio of 1:1 with LiCl.
4. the preparation method of antibiotic property multiple elements design hollow filtration membrane according to claim 1, is characterized in that, in described step (2), described regenerated celulose fibre is the mixture that viscose chitin fibre and bamboo fibre mix with the weight ratio of 2 ~ 3:1.
5. the preparation method of antibiotic property multiple elements design hollow filtration membrane according to claim 1, is characterized in that, in described step (4), the spinning temperature of described casting solution is 70 ~ 80 DEG C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201510747592.8A CN105413478A (en) | 2015-11-06 | 2015-11-06 | Antibacterial multicomponent composite hollow fiber filtering membrane preparation method |
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| CN201510747592.8A CN105413478A (en) | 2015-11-06 | 2015-11-06 | Antibacterial multicomponent composite hollow fiber filtering membrane preparation method |
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| CN105413478A true CN105413478A (en) | 2016-03-23 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108654404A (en) * | 2018-05-25 | 2018-10-16 | 福州大学 | A kind of preparation method of hydrophilic dye adsorbing separation plant fibre blending film |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10305220A (en) * | 1997-04-30 | 1998-11-17 | Daicel Chem Ind Ltd | Cellulose acetate hollow fiber separation membrane |
| CN103143268A (en) * | 2013-03-06 | 2013-06-12 | 宁波净源膜科技有限公司 | Preparation method of polyvinylidene fluoride/polyurethane/polyvinyl chloride blend hollow fiber separation membrane |
| CN103498247A (en) * | 2013-09-09 | 2014-01-08 | 上海婉静纺织科技有限公司 | Chitin fiber and bamboo fiber blended fabric |
| CN104174304A (en) * | 2014-09-12 | 2014-12-03 | 天津工业大学 | Preparation method for anti-pollution PVDF (polyvinylidene fluoride) separation film |
| CN104941465A (en) * | 2015-06-04 | 2015-09-30 | 宁波聿丰新材料科技有限公司 | Method for preparing compound polyvinylidene fluoride super-hydrophobic porous separating membrane |
-
2015
- 2015-11-06 CN CN201510747592.8A patent/CN105413478A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10305220A (en) * | 1997-04-30 | 1998-11-17 | Daicel Chem Ind Ltd | Cellulose acetate hollow fiber separation membrane |
| CN103143268A (en) * | 2013-03-06 | 2013-06-12 | 宁波净源膜科技有限公司 | Preparation method of polyvinylidene fluoride/polyurethane/polyvinyl chloride blend hollow fiber separation membrane |
| CN103498247A (en) * | 2013-09-09 | 2014-01-08 | 上海婉静纺织科技有限公司 | Chitin fiber and bamboo fiber blended fabric |
| CN104174304A (en) * | 2014-09-12 | 2014-12-03 | 天津工业大学 | Preparation method for anti-pollution PVDF (polyvinylidene fluoride) separation film |
| CN104941465A (en) * | 2015-06-04 | 2015-09-30 | 宁波聿丰新材料科技有限公司 | Method for preparing compound polyvinylidene fluoride super-hydrophobic porous separating membrane |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108654404A (en) * | 2018-05-25 | 2018-10-16 | 福州大学 | A kind of preparation method of hydrophilic dye adsorbing separation plant fibre blending film |
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