CN105088538B - A kind of preparation method of hydrophobin coating - Google Patents
A kind of preparation method of hydrophobin coating Download PDFInfo
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Abstract
The present invention is applied to Amphiphatic high polymer field of material technology, there is provided a kind of preparation method of hydrophobic/super-hydrophobic protein coating, this method comprise the following steps：Weigh zeins to be dissolved in alcohol solution, carry out mixing processing after forming zein solution, the solubility of the zein solution is 50~400mg/ml；The zein solution is placed in the syringe of electrospinning device hydrophobic/super-hydrophobic protein coating is prepared.This method preparation process is simple, it is cheap to prepare cost；And prepare speed and be improved, it can be applied to mass produce.
Description
Technical field
The invention belongs to Amphiphatic high polymer field of material technology, more particularly to a kind of preparation method of hydrophobin coating.
Background technology
Hydrophobic material refers to that the water contact angle on surface is more than 90 ° of material, and super hydrophobic material refers to the water contact on surface
Angle is more than 150 ° of material.Hydrophobic/superhydrophobic surfaces are typically made by two methods：Improve surface roughness and reduce surface
Energy.It can be obtained in the raising of nanometer and micro-meter scale following table surface roughness by a variety of methods, such as photoetching technique, chemistry erosion
Quarter, template, sol-gel synthesis, control crystallization, phase separation, Electrospun, graft polymerization, layer-layer method, deposition and colloid are from group
Dress etc..And the acquisition of low-surface-energy generally requires surface chemistry coating auxiliary either surface molecular and is modified.It is hydrophobic/super thin at present
Water materials'use fluorine-containing coat reduces surface energy, the not only expensive toxic effect, and can be in the environment of this material
Biological concentration causes environmental pollution.Molecular modification is then related to multi-step chemical reaction, takes time and effort, and do not meet low energy consumption green ring
The requirement of guarantor.Super hydrophobic material synthesizes on various organic and inorganic materials substrates, including high polymer material, silicon wafer,
Sheet glass and sheet metal.Substrate obtained from so is unsatisfactory, and their mechanical flexibility is very poor, and transparency and stretching are strong
Degree is not high.
Electrostatic spinning is that one kind forms injection stream so as to carry out spinning under strong electric field using polymer solution or melt
The technology of processing.In recent years, because its hyperfine fibre process, Electrospun cause the concern of more and more people.At present
Up to 30 kinds of the polymer of Electrospun processing can be carried out in the world, including natural polymers such as DNA, collagen, silk-fibroins,
And the synthesis macromolecule such as polyoxyethylene, polyacrylonitrile, nylon, polyvinyl alcohol, polyurethane, polycaprolactone.Compared with costliness, consumption
When and also be easy to the method for producing pollution, this method can largely save expense and energy.And at present due to not having
There is the guarantee of advanced electro-spinning equipment, the efficiency of electrostatic spinning industrialized production is extremely low, and wants to reach using electrostatic spinning technique
To high-speed production fiber coat, extremely high is required to production equipment.
The content of the invention
It is an object of the invention to provide a kind of environmental protection, hydrophobic/super-hydrophobic protein coating that cost is low and production efficiency is high
Preparation method, it is intended to solve prior art produce hydrophobic/super-hydrophobic protein coating high to equipment requirement and low production efficiency,
And its obtain hydrophobic/super-hydrophobic protein coating bad mechanical property the problem of.
The present invention is achieved in that a kind of preparation method of hydrophobic/super-hydrophobic protein coating, comprises the following steps：
Weigh zeins to be dissolved in alcohol-water solution, mixing processing, institute are carried out after forming zein solution
The solubility for stating zein solution is 50~400mg/ml；
The zein solution is placed in the syringe of electrospinning device hydrophobic/super-hydrophobic egg is prepared
White coating.
The preparation method of hydrophobic/super-hydrophobic protein coating provided by the invention, using Amphiphilic proteins zeins as
Raw material, hydrophobic/super-hydrophobic protein coating is prepared using electrostatic spinning technique, first, this method be not required to carry out face coat and
Molecular modification, therefore preparation process is simple, it is cheap to prepare cost；Secondly, the zeins that uses is nontoxic, biodegradable
Property and biocompatibility it is strong, there is the prospect of sustainable development, and obtained hydrophobic/super-hydrophobic protein coating mechanical flexibility
It is good；Again, hydrophobic/super-hydrophobic protein coating is prepared using electrostatic spinning technique, speed is prepared and is improved, so that right
The dependence of equipment reduces, and can be applied to mass produce.
Brief description of the drawings
Fig. 1 be spinning voltage provided in an embodiment of the present invention for 18kV when 50mg/ml zein solutions prepare institute
The water contact angle and SEM image of the hydrophobic coating obtained；
Fig. 2 be spinning voltage provided in an embodiment of the present invention for 18kV when 100mg/ml zein solutions prepare institute
The water contact angle and SEM image of the super-hydrophobic coat obtained；
Fig. 3 be spinning voltage provided in an embodiment of the present invention for 18kV when 150mg/ml zein solutions prepare institute
The water contact angle and SEM image of the super-hydrophobic coat obtained；
Fig. 4 be spinning voltage provided in an embodiment of the present invention for 18kV when 200mg/ml zein solutions prepare institute
The water contact angle and SEM image of the hydrophobic coating obtained；
Fig. 5 be spinning voltage provided in an embodiment of the present invention for 18kV when 250mg/ml zein solutions prepare institute
The water contact angle and SEM image of the hydrophobic coating obtained；
It is prepared by 300mg/ml zein solutions when spinning voltage provided in an embodiment of the present invention is 18kV that Fig. 6, which is,
The water contact angle and SEM image of the hydrophobic coating of gained；
It is prepared by 100mg/ml zein solutions when spinning voltage provided in an embodiment of the present invention is 10kV that Fig. 7, which is,
The water contact angle and SEM image of the hydrophobic coating of gained；
It is prepared by 100mg/ml zein solutions when spinning voltage provided in an embodiment of the present invention is 12kV that Fig. 8, which is,
The water contact angle and SEM image of the hydrophobic coating of gained；
It is prepared by 100mg/ml zein solutions when spinning voltage provided in an embodiment of the present invention is 21kV that Fig. 9, which is,
The water contact angle and SEM image of the hydrophobic coating of gained；
Figure 10 is that spinning voltage provided in an embodiment of the present invention is 300mg/ml zein solution systems when being 18kV
The SEM image of the hydrophobic coating of standby gained；
Figure 11 is the hydrophobic coating and SEM image that the zein solution that comparative example 1 provides prepares gained；
Figure 12 is the hydrophobic coating and SEM image that the zein solution that comparative example 2 provides prepares gained.
Embodiment
In order that technical problems, technical solutions and advantageous effects to be solved by the present invention are more clearly understood, below in conjunction with
Drawings and Examples, the present invention will be described in further detail.It should be appreciated that specific embodiment described herein is only used
To explain the present invention, it is not intended to limit the present invention.
Whether in basic research or in the industry, super hydrophobic surface (SHS) is because it is as self-cleaning surface
Potential application, such as solar cell, windshield and stop-light, increasing concern is caused.SHS surfaces
Can also be antifouling, anti-biological pollution, anti-sticking and fire resistance characteristic.Super-hydrophobic table is realized in spite of numerous successfully bionics fibers
Face, but the application in terms of only a small number of research is related to its potential biomaterial.In view of this, the embodiments of the invention provide
A kind of preparation method of hydrophobic/super-hydrophobic protein coating, comprises the following steps：
S01. weigh zeins to be dissolved in alcohol-water solution, carried out after forming zein solution at mixing
Reason, the solubility of the zein solution is 50~400mg/ml；
S02. the zein solution is placed in the syringe of electrospinning device be prepared it is hydrophobic/super thin
Water protein coating.
Specifically, in above-mentioned steps S01, the zeins is a kind of main protein in corn, is a kind of
Large biological molecule with good mechanical properties.Its rich content, it is cheap, there is preferable biocompatibility, and be can be again
Production-goods source.Meanwhile the zeins is a kind of while has hydrophilic and hydrophobic grouping natural amphoteric albumen.Through invention
People, which studies, to be found, because zeins has special self-assembled structures characteristic, therefore, is dredged using what its preparation was formed
Water/super-hydrophobic protein coating has good hydrophobic performance.It is hydrophobic or super-hydrophobic there is presently no being prepared with zeins
The technology of protein film.The embodiment of the present invention is produced thin using zeins as material first by simple processing method
Water or super-hydrophobic protein film, will be one has the alternative tradition of prospect to prepare super-hydrophobic method very much.
In the embodiment of the present invention, the alcohol-water solution selects ethanol-water solution.Ethanol is that volatility is preferably nontoxic molten
Agent, environment is safe from harm, using ethanol as lytic agent composition, is advantageous in following electrostatic spinning techniques, helps to dredge
Water/super-hydrophobic albumen wire vent, therefore, low is required to electrospinning device, applied so as to form uniform hydrophobic/super-hydrophobic albumen
Film.As the presently preferred embodiments, the alcohol-water solution is the ethanol-water solution that the percent by volume of ethanol is 30~95%.As
Further preferred embodiments, the alcohol-water solution are the ethanol-water solution that the percent by volume of ethanol is 80~90%.Especially
It is when the percent by volume of ethanol in alcohol-water dissolves zeins for 80%, is more conducive to wire vent.
Zein solution will be obtained after the dissolving of above-mentioned zeins, the zein solution it is dense
Spend for 50~400mg/ml.The rational concentration range, be effectively guaranteed hydrophobic/super-hydrophobic protein film hydrophobic property and its
Into fiber properties.As the presently preferred embodiments, the concentration of the zein solution is 100~300mg/ml.
The above-mentioned zein solution configured is subjected to abundant mixing processing, until solution homogeneous transparent.As
Preferred embodiment, the mixing processing method of the zein solution are that zein solution is carried out into ultrasonic place
Reason, ultrasonic time is 8~15min, and ultrasonic time is more preferably 10min.Of course it is to be understood that other energy in the art
Reach and fully mix the mode of zein solution also in the protection domain of the embodiment of the present invention.
In order to ensure zeins consistency, above-mentioned steps S01 processing is preferably carried out at normal temperatures and pressures.
In above-mentioned steps S02, hydrophobic/super-hydrophobic protein coating is prepared using electrostatic spinning, want to reach industrialized production,
Ensure final products simultaneously into fiber properties, the requirement to classical unbridled machinery equipment is high.Present inventor is to Static Spinning
Silk prepares the method for hydrophobic/super-hydrophobic protein coating by studying and constantly bringing forth new ideas repeatedly, finds：Made using zeins
For raw material, as long as while control the relevant parameter of electrospinning device, only need to use in general electrostatic spinning instrument equipment, just
It can reach the purpose of hydrophobic/super-hydrophobic protein coating of high-speed production, speed can bring up to 20ml/h, and hydrophobic in preparation process/
Super-hydrophobic albumen wire vent works well, and obtained hydrophobic/super-hydrophobic protein coating is under Electronic Speculum SEM into uniform fiber shape, fiber
Diameter is at 0.7~1.2 micron.
In order to reach the effect above, as the presently preferred embodiments.Hydrophobic/super-hydrophobic protein coating is prepared in the electrostatic spinning
The step of in, the voltage of the electrostatic spinning is 10~30kV, and electrostatic spinning speed is 0.5~20ml/h, electrospinning device
The distance of spinning syringe needle to receiver board be 10~30cm.As further preferred embodiments, the voltage of described electrostatic spinning
It is 10~21kV, the fltting speed of spinning solution is 0.5~10ml/h, and the distance of spinning syringe needle to receiver board is 25cm.By setting
Put above-mentioned parameter, by zeins receive electrostatic spinning apparatus on film-forming.
Application of embodiment of the present invention natural polymer come replace synthesize compound, first, with corn wet process by-product
Thing zeins rapidly and efficiently prepares hydrophobic/super-hydrophobic coat, on the one hand, zeins cost is low, nontoxic, raw
Biodegradable, good biocompatibility, it is green, environment is effectively protected, improves sustainable development；On the other hand, use
The zeins of amphiphatic molecule avoids the steps such as molecular modification and low surface energy coat, is ensureing quality as raw material
On the premise of, production process is saved, simultaneously as the special amphiphatic molecule structure of zeins and self assembly are special
Property, it can accomplish that rapid, high volume growth prepares zeins fiber coat using general electrospinning machine, so as to save significantly
About industrial production cost.Secondly, replace the existing method for preparing super hydrophobic material with electrostatic spinning, make production method by
Complexity is changed into that easy steps are simple, and equipment requirement is low, and controllability is high, can be applied to large-scale industrial production.And preparation speed can
To reach 20ml/h, production efficiency is effectively improved.In addition, prepared by present invention method hydrophobic/super thin
Water coating hydrophobic performance is good, and its water contact angle can reach 153 °, has self-cleaning function.
Illustrated with reference to specific embodiment.
Embodiment 1
Under normal temperature and pressure (15~35 DEG C, 1 standard atmospheric pressure), 0.5g zeins is weighed, is dissolved in 10ml 80%
(v/v) in alcohol-water, 50mg/ml solution, ultrasonic 10min, to solution homogeneous transparent are configured to.The solution that will have been configured
Inject in the syringe of electrospinning device, set spinning voltage as 18kV, the fltting speed of spinning solution is 0.2ml/h, spinning
The distance of syringe needle to receiver board is 25cm.Film is prepared into by electrostatic spinning instrument.Prepare the gained hydrophobic painting of zeins
Layer is 138.2 ° to water contact angle, and its water contact angle and SEM electron microscopes are as shown in Figure 1.
Embodiment 2
Under normal temperature and pressure (15~35 DEG C, 1 standard atmospheric pressure), 1.0g zeins is weighed, is dissolved in 10ml 80%
(v/v) in alcohol-water, 100mg/ml solution, ultrasonic 10min, to solution homogeneous transparent are configured to.The solution that will have been configured
Inject in the syringe of electrospinning device, set spinning voltage as 18kV, the fltting speed of spinning solution is 0.2ml/h, spinning
The distance of syringe needle to receiver board is 25cm.Film is prepared into by electrostatic spinning instrument.It is super-hydrophobic to prepare gained zeins
Coating is 153.6 ° to water contact angle, and its water contact angle and SEM electron microscopes are as shown in Figure 2.
Embodiment 3
Under normal temperature and pressure (15~35 DEG C, 1 standard atmospheric pressure), 1.5g zeins is weighed, is dissolved in 10ml 80%
(v/v) in alcohol-water, 150mg/ml solution, ultrasonic 10min, to solution homogeneous transparent are configured to.The solution that will have been configured
Inject in the syringe of electrospinning device, set spinning voltage as 18kV, the fltting speed of spinning solution is 0.2ml/h, spinning
The distance of syringe needle to receiver board is 25cm.Film is prepared into by electrostatic spinning instrument.It is super-hydrophobic to prepare gained zeins
Coating is 150.4 ° to water contact angle, and its water contact angle and SEM electron microscopes are as shown in Figure 3.
Embodiment 4
Under normal temperature and pressure (15~35 DEG C, 1 standard atmospheric pressure), 2.0g zeins is weighed, is dissolved in 10ml 80%
(v/v) in alcohol-water, 200mg/ml solution, ultrasonic 10min, to solution homogeneous transparent are configured to.The solution that will have been configured
Inject in the syringe of electrospinning device, set spinning voltage as 18kV, the fltting speed of spinning solution is 0.2ml/h, spinning
The distance of syringe needle to receiver board is 25cm.Film is prepared into by electrostatic spinning instrument.Prepare the gained hydrophobic painting of zeins
Layer is 143.8 ° to water contact angle, and its water contact angle and SEM electron microscopes are as shown in Figure 4.
Embodiment 5
Under normal temperature and pressure (15~35 DEG C, 1 standard atmospheric pressure), 2.5g zeins is weighed, is dissolved in 10ml 80%
(v/v) in alcohol-water, 250mg/ml solution, ultrasonic 10min, to solution homogeneous transparent are configured to.The solution that will have been configured
Inject in the syringe of electrospinning device, set spinning voltage as 18kV, the fltting speed of spinning solution is 0.2ml/h, spinning
The distance of syringe needle to receiver board is 25cm.Film is prepared into by electrostatic spinning instrument.Prepare the gained hydrophobic painting of zeins
Layer is 141.0 ° to water contact angle, and its water contact angle and SEM electron microscopes are as shown in Figure 5.
Embodiment 6
Under normal temperature and pressure (15~35 DEG C, 1 standard atmospheric pressure), 3.0g zeins is weighed, is dissolved in 10ml 80%
(v/v) in alcohol-water, 300mg/ml solution, ultrasonic 10min, to solution homogeneous transparent are configured to.The solution that will have been configured
Inject in the syringe of electrospinning device, set spinning voltage as 18kV, the fltting speed of spinning solution is 0.2ml/h, spinning
The distance of syringe needle to receiver board is 25cm.Film is prepared into by electrostatic spinning instrument.Prepare the gained hydrophobic painting of zeins
Layer is 136.4 ° to water contact angle, and its water contact angle and SEM electron microscopes are as shown in Figure 6.
Embodiment 7
Under normal temperature and pressure (15~35 DEG C, 1 standard atmospheric pressure), 1.0g zeins is weighed, is dissolved in 10ml 80%
(v/v) in alcohol-water, 100mg/ml solution, ultrasonic 10min, to solution homogeneous transparent are configured to.The solution that will have been configured
Inject in the syringe of electrospinning device, set spinning voltage as 10kV, the fltting speed of spinning solution is 0.2ml/h, spinning
The distance of syringe needle to receiver board is 25cm.Film is prepared into by electrostatic spinning instrument.Prepare the gained hydrophobic painting of zeins
Layer is 130.5 ° to water contact angle, and its water contact angle and SEM electron microscopes are as shown in Figure 7.
Embodiment 8
Under normal temperature and pressure (15~35 DEG C, 1 standard atmospheric pressure), 1.0g zeins is weighed, is dissolved in 10ml 80%
(v/v) in alcohol-water, 100mg/ml solution, ultrasonic 10min, to solution homogeneous transparent are configured to.The solution that will have been configured
Inject in the syringe of electrospinning device, set spinning voltage as 12kV, the fltting speed of spinning solution is 0.2ml/h, spinning
The distance of syringe needle to receiver board is 25cm.Film is prepared into by electrostatic spinning instrument.Prepare the gained hydrophobic painting of zeins
Layer is 131.2 ° to water contact angle, and its water contact angle and SEM electron microscopes are as shown in Figure 8.
Embodiment 9
Under normal temperature and pressure (15~35 DEG C, 1 standard atmospheric pressure), 1.0g zeins is weighed, is dissolved in 10ml 80%
(v/v) in alcohol-water, 100mg/ml solution, ultrasonic 10min, to solution homogeneous transparent are configured to.The solution that will have been configured
Inject in the syringe of electrospinning device, set spinning voltage as 21kV, the fltting speed of spinning solution is 0.2ml/h, spinning
The distance of syringe needle to receiver board is 25cm.Film is prepared into by electrostatic spinning instrument.Prepare the gained hydrophobic painting of zeins
Layer is 139.4 ° to water contact angle, and its water contact angle and SEM electron microscopes are as shown in Figure 9.
Embodiment 10
Under normal temperature and pressure (15~35 DEG C, 1 standard atmospheric pressure), 3.0g zeins is weighed, is dissolved in 10ml 80%
(v/v) in alcohol-water, 300mg/ml solution, ultrasonic 10min, to solution homogeneous transparent are configured to.The solution that will have been configured
Inject in the syringe of electrospinning device, set spinning voltage as 18kV, the fltting speed of spinning solution is 10ml/h, spinning pin
The distance of head to receiver board is 25cm.Film is prepared into by electrostatic spinning instrument.Prepare gained zeins hydrophobic coating
Fiberizing is good, is 124.2 ° to water contact angle, its SEM electron microscope is as shown in Figure 10.
Comparative example 1
Zeins has film forming characteristics, when zeins concentration is 300mg/ml, under natural drying
The water contact angle of the film arrived is 73 °, and film surface is smooth, and its SEM electron microscope is as shown in Figure 11 as schemed.
Comparative example 2
Under auto arrangement monolayer (SAM) help, pass through evaporation-induced self-assembly (EISA) process, the molten egg of corn alcohol
Hydrophobic membrane can be made in vain, its water contact angle is 115 °, and its SEM electron microscope is as shown in Figure 12 as schemed.
Pass through the comparison of water contact angle, it is known that, electrostatic spinning technique substantially increases the hydrophobicity of maize alcohol-soluble protein film.
By the scanning electron microscope image of different films, the fiber homogeneity that electrostatic spinning obtains is good, and aperture is small, porosity
It is high.Hydrophobic membrane is prepared using the methods described of comparative example 2, it is cumbersome, and low concentration zein solution, film can only be used
Bad mechanical property.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention
All any modification, equivalent and improvement made within refreshing and principle etc., should be included in the scope of the protection.
Claims (4)
1. a kind of preparation method of hydrophobin coating, it is characterised in that comprise the steps of：
Under 15-35 DEG C, 1 standard atmosphere condition, weigh zeins and be dissolved in alcohol-water solution, it is molten to form corn alcohol
Mixing processing is carried out after protein solution, the solubility of the zein solution is 50~400mg/ml, and the corn alcohol is molten
Zein solution is is ultrasonically treated by the mixing processing method of protein solution, ultrasonic time 10min；
The zein solution is placed in the syringe of electrospinning device hydrophobin coating is prepared, in institute
State in the step of electrostatic spinning prepares hydrophobin coating, the voltage of the electrostatic spinning is 21kV, and electrostatic spinning speed is
0.2ml/h, the distance of spinning syringe needle to the receiver board of electrospinning device are 25cm, the fibre diameter of the hydrophobin coating
For 0.7-1.2 microns, the contact angle of the hydrophobin coating is 139.4 °.
2. the preparation method of hydrophobin coating as claimed in claim 1, it is characterised in that the alcohol-water solution be ethanol-
The aqueous solution.
3. the preparation method of hydrophobin coating as claimed in claim 1, it is characterised in that the alcohol-water solution is ethanol
Percent by volume be 30~95% ethanol-water solution.
4. the preparation method of the hydrophobin coating as described in claims 1 to 3 is any, it is characterised in that the alcohol-water solution
The ethanol-water solution that percent by volume for ethanol is 80~90%.
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| CN113969464A (en) * | 2021-11-15 | 2022-01-25 | 陕西科技大学 | Method for preparing novel zein nanofiber membrane by electrostatic spinning |
| CN115012227B (en) * | 2022-07-14 | 2024-03-26 | 江南大学 | Method for preparing hydrophobic textile by using biomacromolecule |
| CN115233450B (en) * | 2022-08-04 | 2023-12-26 | 江南大学 | Method for preparing alcohol soluble protein hydrophobic finishing agent by biological method |
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| US5091262A (en) * | 1990-08-27 | 1992-02-25 | Rexene Products Company | Starch filled coextruded degradable polyethylene film |
| JPH04132796A (en) * | 1990-09-26 | 1992-05-07 | Mitsubishi Kakoki Kaisha Ltd | Production of vegetable oil |
| JP2001073276A (en) * | 1999-09-02 | 2001-03-21 | Toho Rayon Co Ltd | Fiber processed with catechin and its production |
| GB2427382A (en) * | 2005-06-21 | 2006-12-27 | Univ Sheffield | Electrospinning of fibres |
| CN1301755C (en) * | 2005-09-16 | 2007-02-28 | 东南大学 | Zein nano fiber porous film and preparation method |
| CN102587036A (en) * | 2012-03-28 | 2012-07-18 | 吉林大学 | Preparation method of corn alcohol-soluble protein nanofiber membrane used for cell culture |
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