CN105200666B - A kind of preparation method of super-hydrophobic/super-oleophilic tiny balloon shape PVDF nanofibers - Google Patents
A kind of preparation method of super-hydrophobic/super-oleophilic tiny balloon shape PVDF nanofibers Download PDFInfo
- Publication number
- CN105200666B CN105200666B CN201510529424.1A CN201510529424A CN105200666B CN 105200666 B CN105200666 B CN 105200666B CN 201510529424 A CN201510529424 A CN 201510529424A CN 105200666 B CN105200666 B CN 105200666B
- Authority
- CN
- China
- Prior art keywords
- pvdf
- super
- electrostatic spinning
- tiny balloon
- hydrophobic
- 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.)
- Expired - Fee Related
Links
Abstract
The invention belongs to nano-fiber material preparation field, more particularly to a kind of preparation method of super-hydrophobic/super-oleophilic tiny balloon shape PVDF nanofibers, its step is as follows：（1）PVDF electrostatic spinning solutions are configured, take PVDF to be dissolved in N, N dimethylformamides（DMF）Electrostatic spinning solution is configured to, and a small amount of deionized water is added dropwise in electrostatic spinning liquid；（2）Electrostatic spinning is carried out to above-mentioned solution, minor amount of water promotes to form tiny balloon shape PVDF nanofibers by mechanisms of phase separation.The PVDF tiny balloon shape nanofibers that the present invention is provided are prepared using electrostatic spinning technique, and the pattern of nanofiber is controlled by adjusting the content of deionized water in electrostatic spinning solution.The present invention is with low cost, and simple to operate, environment-friendly, product has the effect of excellent hydrophobic and oleophylic.
Description
Technical field
The invention belongs to a kind of preparation method field of novel nano fibrous material, and in particular to a kind of super-hydrophobic/super-oleophilic
The preparation method of tiny balloon shape PVDF nanofibers.
Background technology
In recent years, the situation that environment is polluted in Oil spills is often accompanied by during oil exploitation, transport and use.
The discharge severe contamination natural environment of oil-polluted water in industrial in addition and life, therefore exploitation water body oily pollution administers green wood
Material, new technology are significant.China handles petroleum pollution in ocean and mainly uses oil absorption material at present, and the method can be avoided
Secondary pollution simultaneously can effectively reclaim oil spilling.Conventional oil absorption material includes traditional oil absorption material, and such as maize straw, cotton are fine
Dimension, bombax cotton, zeolite etc.；Also include new function material, such as resinae oil absorption material, carbon sponge, CNT, metal
Organic framework materials（MOF）.
The method of current electrospun nanofibers has been received significant attention.Researcher can be by regulating and controlling nanometer
The microstructure of fiber obtains the nanofiber with New function, so as to meet material function requirement.Prepared by electrostatic spinning receives
Rice fiber can be such that oil enters in material void and material matrix as oil absorption material, so as to make it have higher oil suction effect
Rate.
The content of the invention
It is an object of the invention to provide one kind it is simple to operate, with low cost, purpose product is environment-friendly, and oil absorbency is strong
Super-hydrophobic/super-oleophilic tiny balloon shape PVDF nanofibers preparation method.
In order to solve the above technical problems, what the present invention was realized in.
A kind of preparation method of super-hydrophobic/super-oleophilic tiny balloon shape PVDF nanofibers, can implement as follows.
（1）The preparation of electrostatic spinning solution：Remove ionized water to add in DMF (DMF), in stirring
In the case of PVDF is added into solution, finally 50oPersistently stirred under the conditions of C 24 hours.
（2）It is prepared by purpose product：By step（1）Gained electrostatic spinning solution carries out electrostatic spinning；N, N- dimethyl formyl
After amine (DMF) volatilization solidification, in receiving terminal formation fibrofelt；Dried after fibrofelt is collected, produce purpose product super-hydrophobic/super
Oleophylic tiny balloon shape PVDF nanofibers.
It is used as a kind of preferred scheme, step of the present invention（2）In, by step（1）Gained electrostatic spinning solution is placed in 10
Electrostatic spinning is carried out in~20ml injector for medical purpose；The voltage of electrostatic spinning is 18kV, injector for medical purpose shower nozzle and receiver it
Between distance be 15cm, the flow control of electrostatic spinning solution is 2.0ml/h.
Further, step of the present invention（1）In, in terms of weight/mass percentage composition, PVDF accounts for DMF
(DMF) and the 5% ~ 15% of ionized water is removed.
Further, step of the present invention（2）In, in terms of weight/mass percentage composition, deionization in electrostatic spinning solution
Water accounts for the 0 ~ 20% of PVDF.
Further, step of the present invention（2）In, in terms of weight/mass percentage composition, deionization in electrostatic spinning solution
Water content is 0 ~ 2.5%.
Further, step of the present invention（2）In, receiver uses high speed going barrel aluminium foil receiver, and rotating speed is
500 turns/min.
The present invention have selected the PVDF separation materials with excellent chemical stability and stain resistance.Pass through electrostatic spinning
PVDF/DMF/H in liquid2H in O2The control of O content, makes PVDF realize liquid-liquid phase separation during electrostatic spinning to make
The standby PVDF nanofibers with hollow microsphere structure.It has studied influence and general of the fiber surface microstructure to surface wettability
It is applied in oil suction experiment, obtains the PVDF nano-fiber materials with super-hydrophobic/super-oleophilic.
The present invention is simple to operate, and with low cost, purpose product is environment-friendly, and oil absorbency is strong.The present invention utilizes Static Spinning
Non-solvent deionized water is added in silk solution, so as to form tiny balloon shape PVDF nanofibers during electrostatic spinning
Felt.Preparation-obtained nanofiber is immersed in lubricating oil to be measured respectively, taken out after soaking 1 minute, treats that its stands 2
Check weighing after minute.Operated more than repeating, it is calculated after the oil absorption of PVDF nanofiber mats samples is no longer in increase trend
Oil absorbency.
Brief description of the drawings
The invention will be further described with reference to the accompanying drawings and detailed description.Protection scope of the present invention not only office
It is limited to the statement of following content.
Fig. 1-1, Fig. 1-2, Fig. 1-3, Fig. 1-4, Fig. 1-5 and Fig. 1-6 for different moisture content of the present invention Electrospun solution institute
The SEM figures of obtained PVDF nanofibers.
Fig. 2 is the water contact angle of PVDF nanofiber mats of the present invention.
Fig. 3 is water droplet of the present invention and photo of the oil droplet on nanofiber.
Fig. 4 is PVDF nanofibers oil absorption versus time curve of the present invention.
Embodiment
Water used is deionized water in following examples；Agents useful for same is pure using analyzing in addition to special instruction
Reagent；In embodiment, the SEM pictures of obtained PVDF nanofibers oil absorption material are by Hitachi S-3500N type ESEMs
Scanning is obtained；Videomicroscopy is used to have studied nanofiber surface in the present invention and the contact angle and water droplet photo of water are carried out
Measure and take pictures.Fig. 1 schemes for the SEM of the PVDF nanofibers obtained by the Electrospun solution of different moisture content of the present invention；Wherein,
A: 0.0%, B: 0.5%, C: 1.0%, D: 1.5%, E: 2.0%, F: 2.5%。
Embodiment 1.
3g PVDF powder is weighed, is slowly added under magnetic stirring in 18g DMF, magnetic in 50 DEG C of water-baths is subsequently placed in
Power stirring 24h formation electrostatic spinning solutions.This solution is cooled to room temperature state before electrostatic spinning.Above-mentioned electrostatic spinning is molten
In the 20ml plastic injectors that liquid is placed in, it are furnished with 0.5mm diameter stainless steel syringe needles on syringe.The voltage of electrostatic spinning is
The distance between 18kV, shower nozzle and receiver are 15cm, and the fltting speed of syringe is humidity 50% in 2ml/h, casing.Quiet
Solidify in electro-spinning process due to volatile solvent DMF volatilization, one layer of PVDF fibrofelt is formed on aluminium foil.Will
PVDF fibrofelts are placed in 50 after collectingo24h is dried in C vacuum drying ovens, tiny balloon shape PVDF nanofibers are produced.Weigh 0.5g
PVDF nanofiber mats samples, be placed in the close net corbeil of stainless steel.Then it is sufficiently submerged in lubricating oil to be measured.
Immersion takes out the corbeil for holding PVDF nanofiber mats after 1 minute, and check weighing on electronic balance is positioned over after it stands 2 minutes.
Operated more than repeating, its oil absorbency is calculated after the oil absorption of PVDF nanofiber mats samples is no longer in increase trend.PVDF
The oil absorbency of nanofiber mats can use following formula to be calculated：, m in formula0For the original of PVDF nanofiber mats
Quality, mtFor the quality after its oil suction for a period of time.Nanofiber oil absorbency at 2 minutes is reached after the g/g of optimum value 11.76
Basically reach oil suction balance（See Fig. 4）.
Embodiment 2.
3g PVDF powder is weighed, 18g DMF and 0.1g deionized waters mixed solution are slowly added under magnetic stirring
In, it is subsequently placed in magnetic agitation 24h formation electrostatic spinning solution in 50 DEG C of water-baths.This solution is cooled to room before electrostatic spinning
Temperature state.In the 20ml plastic injectors that above-mentioned electrostatic spinning solution is placed in, it are furnished with 0.5mm diameter stainless pins on syringe
Head.The voltage of electrostatic spinning is 18kV, and the distance between shower nozzle and receiver are 15cm, and the fltting speed of syringe is 2ml/h,
Humidity 50% in casing.Solidify during electrostatic spinning due to volatile solvent DMF volatilization, formed on aluminium foil
One layer of PVDF fibrofelt.50 are placed in after PVDF fibrofelts are collectedo24h is dried in C vacuum drying ovens, tiny balloon shape PVDF is produced
Nanofiber.0.5g PVDF nanofiber mats samples are weighed, are placed in the close net corbeil of stainless steel.Then it is sufficiently submerged in
In lubricating oil to be measured.The corbeil for holding PVDF nanofiber mats is taken out after soaking 1 minute, is placed after it stands 2 minutes
In check weighing on electronic balance.Operated more than repeating, until the oil absorption of PVDF nanofiber mats samples is no longer in after increase trend
Calculate its oil absorbency.The oil absorbency of PVDF nanofiber mats can use following formula to be calculated：, m in formula0For
The original quality of PVDF nanofiber mats, mtFor the quality after its oil suction for a period of time.Nanofiber oil absorbency at 5 minutes reaches
Oil suction balance is basically reached after to optimum value 14.9g/g（See Fig. 4）.
Embodiment 3.
3g PVDF powder is weighed, 18g DMF and 0.2g deionized waters mixed solution are slowly added under magnetic stirring
In, it is subsequently placed in magnetic agitation 24h formation electrostatic spinning solution in 50 DEG C of water-baths.This solution is cooled to room before electrostatic spinning
Temperature state.In the 20ml plastic injectors that above-mentioned electrostatic spinning solution is placed in, it are furnished with 0.5mm diameter stainless pins on syringe
Head.The voltage of electrostatic spinning is 18kV, and the distance between shower nozzle and receiver are 15cm, and the fltting speed of syringe is 2ml/h,
Humidity 50% in casing.Solidify during electrostatic spinning due to volatile solvent DMF volatilization, formed on aluminium foil
One layer of PVDF fibrofelt.50 are placed in after PVDF fibrofelts are collectedo24h is dried in C vacuum drying ovens, tiny balloon shape PVDF is produced
Nanofiber.0.5g PVDF nanofiber mats samples are weighed, are placed in the close net corbeil of stainless steel.Then it is sufficiently submerged in
In lubricating oil to be measured.The corbeil for holding PVDF nanofiber mats is taken out after soaking 1 minute, is placed after it stands 2 minutes
In check weighing on electronic balance.Operated more than repeating, until the oil absorption of PVDF nanofiber mats samples is no longer in after increase trend
Calculate its oil absorbency.The oil absorbency of PVDF nanofiber mats can use following formula to be calculated：, m in formula0For
The original quality of PVDF nanofiber mats, mtFor the quality after its oil suction for a period of time.Nanofiber oil absorbency at 7 minutes reaches
Oil suction balance is basically reached after to optimum value 15.7g/g（See Fig. 4）.
Embodiment 4.
3g PVDF powder is weighed, 18g DMF and 0.3g deionized waters mixed solution are slowly added under magnetic stirring
In, it is subsequently placed in magnetic agitation 24h formation electrostatic spinning solution in 50 DEG C of water-baths.This solution is cooled to room before electrostatic spinning
Temperature state.In the 20ml plastic injectors that above-mentioned electrostatic spinning solution is placed in, it are furnished with 0.5mm diameter stainless pins on syringe
Head.The voltage of electrostatic spinning is 18kV, and the distance between shower nozzle and receiver are 15cm, and the fltting speed of syringe is 2ml/h,
Humidity 50% in casing.Solidify during electrostatic spinning due to volatile solvent DMF volatilization, formed on aluminium foil
One layer of PVDF fibrofelt.50 are placed in after PVDF fibrofelts are collectedo24h is dried in C vacuum drying ovens, tiny balloon shape PVDF is produced
Nanofiber.0.5g PVDF nanofiber mats samples are weighed, are placed in the close net corbeil of stainless steel.Then it is sufficiently submerged in
In lubricating oil to be measured.The corbeil for holding PVDF nanofiber mats is taken out after soaking 1 minute, is placed after it stands 2 minutes
In check weighing on electronic balance.Operated more than repeating, until the oil absorption of PVDF nanofiber mats samples is no longer in after increase trend
Calculate its oil absorbency.The oil absorbency of PVDF nanofiber mats can use following formula to be calculated：, m in formula0For
The original quality of PVDF nanofiber mats, mtFor the quality after its oil suction for a period of time.Nanofiber oil absorbency at 6 minutes reaches
Oil suction balance is basically reached after to optimum value 17.08g/g（See Fig. 4）.
Embodiment 5.
3g PVDF powder is weighed, 18g DMF and 0.4g deionized waters mixed solution are slowly added under magnetic stirring
In, it is subsequently placed in magnetic agitation 24h formation electrostatic spinning solution in 50 DEG C of water-baths.This solution is cooled to room before electrostatic spinning
Temperature state.In the 20ml plastic injectors that above-mentioned electrostatic spinning solution is placed in, it are furnished with 0.5mm diameter stainless pins on syringe
Head.The voltage of electrostatic spinning is 18kV, and the distance between shower nozzle and receiver are 15cm, and the fltting speed of syringe is 2ml/h,
Humidity 50% in casing.Solidify during electrostatic spinning due to volatile solvent DMF volatilization, formed on aluminium foil
One layer of PVDF fibrofelt.50 are placed in after PVDF fibrofelts are collectedo24h is dried in C vacuum drying ovens, tiny balloon shape PVDF is produced
Nanofiber.0.5g PVDF nanofiber mats samples are weighed, are placed in the close net corbeil of stainless steel.Then it is sufficiently submerged in
In lubricating oil to be measured.The corbeil for holding PVDF nanofiber mats is taken out after soaking 1 minute, is placed after it stands 2 minutes
In check weighing on electronic balance.Operated more than repeating, until the oil absorption of PVDF nanofiber mats samples is no longer in after increase trend
Calculate its oil absorbency.The oil absorbency of PVDF nanofiber mats can use following formula to be calculated：, m in formula0For
The original quality of PVDF nanofiber mats, mtFor the quality after its oil suction for a period of time.Nanofiber oil absorbency at 7 minutes reaches
Oil suction balance is basically reached after to optimum value 17.36g/g（See Fig. 4）.
Embodiment 6.
3g PVDF powder is weighed, 18g DMF and 0.5g deionized waters mixed solution are slowly added under magnetic stirring
In, it is subsequently placed in magnetic agitation 24h formation electrostatic spinning solution in 50 DEG C of water-baths.This solution is cooled to room before electrostatic spinning
Temperature state.In the 20ml plastic injectors that above-mentioned electrostatic spinning solution is placed in, it are furnished with 0.5mm diameter stainless pins on syringe
Head.The voltage of electrostatic spinning is 18kV, and the distance between shower nozzle and receiver are 15cm, and the fltting speed of syringe is 2ml/h,
Humidity 50% in casing.Solidify during electrostatic spinning due to volatile solvent DMF volatilization, formed on aluminium foil
One layer of PVDF fibrofelt.50 are placed in after PVDF fibrofelts are collectedo24h is dried in C vacuum drying ovens, tiny balloon shape PVDF is produced
Nanofiber.0.5g PVDF nanofiber mats samples are weighed, are placed in the close net corbeil of stainless steel.Then it is sufficiently submerged in
In lubricating oil to be measured.The corbeil for holding PVDF nanofiber mats is taken out after soaking 1 minute, is placed after it stands 2 minutes
In check weighing on electronic balance.Operated more than repeating, until the oil absorption of PVDF nanofiber mats samples is no longer in after increase trend
Calculate its oil absorbency.The oil absorbency of PVDF nanofiber mats can use following formula to be calculated：, m in formula0For
The original quality of PVDF nanofiber mats, mtFor the quality after its oil suction for a period of time.Nanofiber oil absorbency at 6 minutes reaches
Oil suction balance is basically reached after to optimum value 21.48g/g（See Fig. 4）.
Claims (4)
1. a kind of preparation method of super-hydrophobic/super-oleophilic tiny balloon shape PVDF nanofibers, it is characterised in that as follows
Implement：
（1）The preparation of electrostatic spinning solution：Remove ionized water to add in DMF (DMF), in the situation of stirring
It is lower that PVDF is added into solution, finally 50oPersistently stirred under the conditions of C 24 hours；The deionized water is 0.1 with PVDF proportionings
~0.5：3；
（2）It is prepared by purpose product：By step（1）Gained electrostatic spinning solution carries out electrostatic spinning；N,N-dimethylformamide
(DMF) volatilized jointly solidification with micro deionized water, in receiving terminal formation fibrofelt；Dried after fibrofelt is collected, produce mesh
Product super-hydrophobic/super-oleophilic tiny balloon shape PVDF nanofibers.
2. the preparation method of super-hydrophobic/super-oleophilic tiny balloon shape PVDF nanofibers according to claim 1, its feature exists
In：The step（2）In, by step（1）Gained electrostatic spinning solution, which is placed in 10~20ml injector for medical purpose, carries out Static Spinning
Silk；The voltage of electrostatic spinning is 18kV, and the distance between injector for medical purpose shower nozzle and receiver are 15cm, electrostatic spinning solution
Flow control be 2.0ml/h.
3. the preparation method of super-hydrophobic/super-oleophilic tiny balloon shape PVDF nanofibers according to claim 2, its feature exists
In：The step（1）In, in terms of weight/mass percentage composition, PVDF accounts for DMF (DMF) and removes the 5% of ionized water
~15%。
4. the preparation method of super-hydrophobic/super-oleophilic tiny balloon shape PVDF nanofibers according to claim 3, its feature exists
In：The step（2）In, receiver uses high speed going barrel aluminium foil receiver, and rotating speed is 500 turns/min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510529424.1A CN105200666B (en) | 2015-08-26 | 2015-08-26 | A kind of preparation method of super-hydrophobic/super-oleophilic tiny balloon shape PVDF nanofibers |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510529424.1A CN105200666B (en) | 2015-08-26 | 2015-08-26 | A kind of preparation method of super-hydrophobic/super-oleophilic tiny balloon shape PVDF nanofibers |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105200666A CN105200666A (en) | 2015-12-30 |
| CN105200666B true CN105200666B (en) | 2017-09-15 |
Family
ID=54948610
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510529424.1A Expired - Fee Related CN105200666B (en) | 2015-08-26 | 2015-08-26 | A kind of preparation method of super-hydrophobic/super-oleophilic tiny balloon shape PVDF nanofibers |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105200666B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106115690B (en) * | 2016-06-20 | 2018-07-06 | 中原工学院 | A kind of preparation method of continuous hollow charcoal ball |
| CN107475902B (en) * | 2017-08-28 | 2020-01-07 | 天津工业大学 | Preparation method of super-hydrophobic fiber membrane |
| CN110760939A (en) * | 2019-10-28 | 2020-02-07 | 浙江理工大学 | Nano fiber with rough surface structure and preparation method thereof |
| CN112877794A (en) * | 2020-12-21 | 2021-06-01 | 辽宁石油化工大学 | Method for preparing PVDF porous fiber through electrostatic spinning |
| CN113832706B (en) * | 2021-09-24 | 2023-07-18 | 天津工业大学 | In-situ water electret method based on electrostatic spinning and fiber material with charge bubbles |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101815563B (en) * | 2007-07-18 | 2013-02-13 | 新加坡南洋理工大学 | Hollow porous microspheres |
| US20140190137A1 (en) * | 2013-01-10 | 2014-07-10 | Tdc Filter Manufacturing, Inc. | Media and Filter for Coastal and High Humidity Areas |
| KR101423757B1 (en) * | 2013-04-29 | 2014-08-04 | 계명대학교 산학협력단 | Manufacturing method of nanofiber-graphene membrane for water-treatment and nanofiber-graphene membrane for water-treatment thereof |
| CN104436760B (en) * | 2014-10-27 | 2016-08-24 | 北京服装学院 | A kind of magnetic response high efficiency oil-water separation tunica fibrosa and preparation method thereof |
| CN104353497A (en) * | 2014-11-13 | 2015-02-18 | 辽宁石油化工大学 | Preparing method and application of NiB/PVDF (polyvinylidene fluoride) nano-fiber catalyst |
| CN104480636B (en) * | 2014-11-28 | 2017-12-01 | 江南大学 | A kind of polyvinylidene fluoride nanometer fiber film material and preparation method and application |
| CN104674384B (en) * | 2015-02-12 | 2017-10-03 | 中国科学院城市环境研究所 | Three-dimensional water-oil separating material based on electrostatic spinning technique and preparation method thereof |
-
2015
- 2015-08-26 CN CN201510529424.1A patent/CN105200666B/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN105200666A (en) | 2015-12-30 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105200666B (en) | A kind of preparation method of super-hydrophobic/super-oleophilic tiny balloon shape PVDF nanofibers | |
| Yang et al. | Sandwich structured polyamide-6/polyacrylonitrile nanonets/bead-on-string composite membrane for effective air filtration | |
| Zuo et al. | Free‐standing polyurethane nanofiber/nets air filters for effective PM capture | |
| Wang et al. | Electrospinning of polyacrylonitrile solutions at elevated temperatures | |
| CN101905101B (en) | Method for preparing melt-blown polypropylene electret filter material | |
| Liu et al. | Electrospun jets number and nanofiber morphology effected by voltage value: Numerical simulation and experimental verification | |
| CN104436865B (en) | High-efficiency low-resistance PM2.5 composite fiber filtering membrane and electrostatic spinning preparation method | |
| Li et al. | Polypropylene fibers fabricated via a needleless melt‐electrospinning device for marine oil‐spill cleanup | |
| Zhang et al. | Spraying functional fibres by electrospinning | |
| Holopainen et al. | Needleless electrospinning with twisted wire spinneret | |
| CN103774345B (en) | A kind of preparation method of efficient low-resistance antibacterial purification of air filter membrane | |
| CN103993423B (en) | A kind of preparation method of organic-inorganic hybrid nanometer superhydrophobic fibers film | |
| Zhang et al. | The preparation of PCL/MSO/SiO2 hierarchical superhydrophobic mats for oil-water separation by one-step method | |
| CN107475902B (en) | Preparation method of super-hydrophobic fiber membrane | |
| CN104841293B (en) | Oil water separation nanofiber membrane with CO2 stimulus response as well as preparation method and application thereof | |
| Zhang et al. | Preparation of hierarchically structured PCL superhydrophobic membrane via alternate electrospinning/electrospraying techniques | |
| Wang et al. | Multilevel‐layer‐structured polyamide 6/poly (trimethylene terephthalate) nanofibrous membranes for low‐pressure air filtration | |
| Zhu et al. | Preparation of high strength ultrafine polyvinyl chloride fibrous membrane and its adsorption of cationic dye | |
| CN105126641B (en) | A kind of flexible attapulgite membrane and preparation method thereof | |
| Zheng et al. | Polymer nanofibers prepared by low-voltage near-field electrospinning | |
| CN108465297A (en) | A kind of preparation method of super-hydrophobic electret filter for air purification | |
| Wang et al. | One-step electrospinning PCL/ph-LPSQ nanofibrous membrane with excellent self-cleaning and oil-water separation performance | |
| CN106178599A (en) | A kind of automatically cleaning polybenzoxazine super-hydrophobic super-oleophylic fiber web material and preparation thereof and application in oil-water separation | |
| CN108201735A (en) | Lactyl filtering material and preparation method thereof, filtering filter membrane, filter device | |
| CN107999039A (en) | A kind of PLA-TPs nano fibrous membranes and its preparation method and application |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170915 Termination date: 20210826 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |