CN109183274A - A kind of composite membrane and preparation method for electronic skin substrate - Google Patents
A kind of composite membrane and preparation method for electronic skin substrate Download PDFInfo
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- CN109183274A CN109183274A CN201810952803.5A CN201810952803A CN109183274A CN 109183274 A CN109183274 A CN 109183274A CN 201810952803 A CN201810952803 A CN 201810952803A CN 109183274 A CN109183274 A CN 109183274A
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- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- D01D5/00—Formation of filaments, threads, or the like
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- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- D01D5/00—Formation of filaments, threads, or the like
- D01D5/0007—Electro-spinning
- D01D5/0015—Electro-spinning characterised by the initial state of the material
- D01D5/003—Electro-spinning characterised by the initial state of the material the material being a polymer solution or dispersion
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- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
- D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
- D04H1/42—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece
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- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
- D04H1/70—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres characterised by the method of forming fleeces or layers, e.g. reorientation of fibres
- D04H1/72—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres characterised by the method of forming fleeces or layers, e.g. reorientation of fibres the fibres being randomly arranged
- D04H1/728—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres characterised by the method of forming fleeces or layers, e.g. reorientation of fibres the fibres being randomly arranged by electro-spinning
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
- D06N3/0002—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the substrate
- D06N3/0011—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the substrate using non-woven fabrics
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
- D06N3/0086—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the application technique
- D06N3/0088—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the application technique by directly applying the resin
- D06N3/009—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the application technique by directly applying the resin by spraying components on the web
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Abstract
The present invention relates to electronic skin field of material technology, and in particular to a kind of composite membrane and preparation method for electronic skin substrate.A kind of preparation method of composite membrane for electronic skin substrate is made of following steps: (a) regenerated silk fibroin is dissolved in preparation fibroin albumen spinning solution A in formic acid by；Dissolve the chitosan in preparation chitosan spinning solution B in trifluoroacetic acid；(b) fibroin albumen spinning solution A described in (a) step and chitosan spinning solution B is uniformly mixed and obtains blend spinning liquid C by；(c) blend spinning liquid C described in (b) step is carried out spinning by, obtains silk fibroin/chitosan blend nanofiber film；(d) one layer of pellosil is coated on silk fibroin/chitosan blend nanofiber film described in (c) step to get the composite membrane arrived for electronic skin substrate.A kind of composite membrane for electronic skin substrate that this method is prepared and human skin bio-compatibility are good, and adhesion is ideal.
Description
Technical field
The present invention relates to electronic skin field of material technology, and in particular to a kind of composite membrane for electronic skin substrate and
Preparation method.
Background technique
With the development of electronic information technology, new material and biotechnology, the application prospect of electronic skin has received concern.
It is integrated with functional material on the mankind even surface of intelligent machine, the function such as the mankind or smart machine sensing can be assigned
Energy.This wearable device promotes the intelligence of the equipment such as health medical treatment, household, industrial production with the rise of intelligent terminal
Change.
Electronic skin can be used as one kind of wearable device, by electronic skin integrate various sensors can repair by
The patient of disturbance of perception is caused to recapture sense of touch in skin injury.Electronic skin is higher to flexible and aeroelastic requirements, and requires
Has the function of preferable pressure output in the case where Three-Dimensional Dynamic and static state.Electronic skin flexibleization is required in recent years
Trend, and the pliable pressure sensor for being applied to pliable pressure test is wherein most challenging application.According to electronics
The essential structure of skin divides, and the material of electronic skin can be divided into sensitive material and base material two major classes.But it is existing
There is the problems such as poor with human skin bio-compatibility, adhesion is undesirable in electronic skin base material, influence the experience of user.
Application No. is: 201711128891.9 Chinese patent application discloses a kind of based on native cellulose Nanowire
Electronic skin of dimension and preparation method thereof, it is characterised in that use suction filtration or Electrostatic Absorption method by carbon nanotube, graphene, Yin Na
The electrical-conductive nanometers material such as rice noodles is fixed on imparting tunica fibrosa conductive characteristic on bacteria cellulose (BC) nano fibrous membrane；It will be as Jie
The polyethylene film of electric layer is placed among the uniform conductive BC nano fibrous membrane of two panels thickness and constitutes miniature stretchable, compressible electricity
Container obtains the electronic skin based on native cellulose nanofiber.The present invention is prepared for for the first time based on natural fiber material
The electronic skin of material provides technical support to find the better electronic skin of biocompatibility of replacement synthetic high polymer, has
There is preferable medical application prospect.
Application No. is: 201310507497.1 Chinese patent application discloses a kind of electronic skin, including flexible quick
Feel layer, at least one upper and lower surfaces of the sensitive layer are nonplanar structure, the upper surface of the sensitive layer and following table
Upper electrode layer and lower electrode layer are respectively formed on face.The invention also discloses a kind of production methods of electronic skin.The present invention
Electronic skin blended with novel micro nanometer sensing technology, due to having used the good ultra-thin elastic of nontoxic and biocompatibility thin
Membrane material, therefore can combine together well with human skin, super good user experience can be brought by being built into wearable device；
Simultaneously because sensitivity that the unique nanostructure of sensitive material has the equipment is higher, stability is more preferable；In addition entire
The light and small dexterity of device has the advantages that easy to carry.
Application No. is: 201711184092.3 Chinese patent application discloses a kind of highly sensitive electronic skin, has
Polyvinyl alcohol-silver nanowires/graphene-PDMS sandwich structure forms one layer of phase on PET base material surface by way of spraying
The mutually silver nanowires conductive network of overlapping accumulation, even application disperses one layer by large stretch of graphite on silver nanowires network again later
The graphene of alkene and the mixing of small pieces graphene, these graphenes are deposited on the silver nanoparticle that between silver nanowires network or connection is adjacent
Line further enhances the electric conductivity of conductive network, later, using the mode of spin coating at one layer of the spin coating of above-mentioned conductive network surface
Matrix of the poly-vinyl alcohol solution as electronic skin, finally, separating composite membrane from PET film after polyvinyl alcohol is dry
It opens, which is transferred in baking oven, overturn surface, one layer of PDMS film is deposited in the one side contacted with PET, thus may be used
To obtain a kind of electronic skin of sandwich structure.
Application No. is: 201610030975.8 Chinese patent application discloses a kind of flexible nano fiber base electronics skin
Skin and preparation method thereof belongs to flexible sensor field.A kind of flexible nano fiber base electronic skin, it is characterised in that: the electricity
The flexible nano tunica fibrosa that sub- skin is crossed by two layers of conductive treatment is bonded, flexible nano tunica fibrosa with a thickness of 30~
500um, wherein in the two sides to fit, at least one side has micro groove or micro-protuberance structure.The present invention can solve existing skill
The problem that operating voltage is high in art, power consumption is big and sensitivity is low；The effect of sensitive layer and conductive grade is had both, structure is single, technique
Simply, industrialized production can be used for；It with good biocompatibility, therefore can combine together, be convenient for human skin well
It is built into wearable device；For the electronic skin unique nanostructure in the present invention equipment is had sensitive in addition
Du Genggao, stability are more preferable；Furthermore the entire light and small dexterity of device has the advantages that easy to carry.
Application No. is: 201810283447.2 Chinese patent application discloses a kind of based on the high-elastic of electrostatic spinning technique
Property active electronic skin forming method comprising: crosslinking agent is added in high-molecular copolymer material of the selection containing flexible blocks, closes
At dissaving polymer or crosslinking amorphous polymer；Into synthesized polymer, addition has power-electrotransformation feature function
Energy material, and to be uniformly dispersed to obtain electrostatic spinning solution；Using electrostatic spinning technique make solution carry out electrostatic spinning and
Collect film forming, thus directly obtains required electronic skin product.It through the invention, can be without using flexible base board the case where
Lower high quality, high efficiency make electronic skin, and the product can in a manner of active voltage highly sensitive output signal with reality
The test of existing power, while significantly improving the characteristics such as surface area and aperture rate.
Application No. is: 201810287132.5 Chinese patent application discloses a kind of single electrode flexible electronic skin, packet
Functional layer is included, the functional layer is flexible nano tunica fibrosa, and the functional layer is made by method of electrostatic spinning, under the functional layer
Surface is electrode layer.The functional layer is transparent, high to the transmitance of visible light, and the electrode layer is independent and unique electrode
Layer.Electronic skin material of the invention is simple, and distinguishable pressure and temperature solves the problems, such as that the prior art has a single function；By
In having used nontoxic and good biocompatibility ultra-thin ferroelectric flexible polymer material, transparency is high, so can well and people
Body skin combines together, convenient for being built into wearable device；It can work independently simultaneously, not need applied voltage, solve existing
The problem that operating voltage is high in technology, power consumption is big；In addition the entire light and small dexterity of device have the advantages that it is easy to carry, will be in intelligence
Robot field obtains preferable application.
Summary of the invention
It is poor with human skin bio-compatibility to exist for existing electronic skin base material, and adhesion is undesirable etc. asks
Topic, influences the defect of the experience of user, the invention solves first technical problem be propose it is a kind of for electronic skin base
The preparation method of the composite membrane at bottom, a kind of composite membrane for electronic skin substrate and human skin that this method is prepared are raw
Object good compatibility, adhesion are ideal.
To solve first technical problem of the invention, a kind of composite membrane for electronic skin substrate of the invention
Preparation method be made of following steps:
(a) regenerated silk fibroin is dissolved in preparation fibroin albumen spinning solution A in formic acid by；Dissolve the chitosan in trifluoroacetic acid
Middle preparation chitosan spinning solution B；
(b) fibroin albumen spinning solution A described in (a) step and chitosan spinning solution B is uniformly mixed and obtains blend spinning liquid C by；
(c) blend spinning liquid C described in (b) step is carried out spinning by, obtains silk fibroin/chitosan blend nanofiber film；
(d) one layer of pellosil is coated on silk fibroin/chitosan blend nanofiber film described in (c) step to get to being used for
The composite membrane of electronic skin substrate.
Regenerated silk fibroin of the present invention refers to that silk obtains fibroin albumen through processes such as degumming, dissolution and dialysis,
Commercially available regenerated silk fibroin can be used, can also be prepared using existing method.
The other chitosan of commercially available medical grade can be used in chitosan of the present invention, can also be with chitin by de- second
Acyl acts on obtaining Chitosan (1-4) -2- amino-B-D glucose, biological functionality and compatibility, blood compatibility, peace
Quan Xing, microbic resolvability are excellent.
Further, the mass volume ratio of regenerated silk fibroin and formic acid solution described in (a) step is 50~110g/L；It is excellent
Selecting the mass volume ratio of regenerated silk fibroin and formic acid solution is 60~90g/L.
Further, the mass volume ratio of chitosan and trifluoroacetic acid described in (a) step is 15~45g/L；It is preferred that described
The mass volume ratio of chitosan and trifluoroacetic acid is 20~30g/L.
Fibroin albumen spinning solution A is very few, and chitosan spinning solution B is excessive, and obtained electronic skin flexibility is poor, is not durable.
Fibroin albumen spinning solution A is excessive, and chitosan spinning solution B is very few, and obtained electronic skin adhesion is poor, easily falls, by experiment
It was found that when the mass ratio of fibroin albumen spinning solution A and chitosan spinning solution B are 4~9:1~4, the electronic skin that is prepared
Flexibility is good, and the adhesion of electronic skin is good, is not easy to fall, and therefore fibroin albumen spinning solution A and shell described in (b) step are poly-
The mass ratio of sugared spinning solution B is 4~9:1~4；Further research discovery, fibroin albumen spinning solution A and chitosan spinning solution
When the mass ratio of B is 4~7:3~4, the flexibility for the electronic skin being prepared and the adhesion of electronic skin are all more preferable, because
The mass ratio of this described fibroin albumen spinning solution A and chitosan spinning solution B is preferably 4~7:3~4.
Further, (c) spinning process described in step is gas spinning or electrostatic spinning.
Further, one layer of pellosil (d) is coated with described in step on silk fibroin/chitosan blend nanofiber film
Method are as follows: silica gel solution is atomized by atomized silica gel using atomizer, then fibroin albumen/chitosan described in (c) step is total
Mixed nano fibrous membrane contacts to obtain wet film with atomization silica gel, is warming up to 60-80 DEG C of drying.
The invention solves second technical problem be to provide a kind of composite membrane for electronic skin substrate.
To solve second technical problem of the invention, a kind of composite membrane for electronic skin substrate of the invention
It is prepared using preparation method as above.
The utility model has the advantages that regenerated silk fibroin is dissolved in formic acid by the present invention prepares spinning solution, then dissolve the chitosan in
Spinning solution is prepared in trifluoroacetic acid, and silk fibroin protein solution and chitosan solution are uniformly mixed and obtain blend spinning liquid；It will mixing
Spinning solution carries out spinning, obtains silk fibroin/chitosan blend nanofiber film.Again in fibroin albumen/chitosan blend nanometer
It is coated with one layer of pellosil on tunica fibrosa, obtains the composite membrane for electronic skin substrate, there is following significant advantage:
(1), the present invention has good biocompatibility, the characteristics such as, nontoxic nonirritant to human skin using pellosil；
(2), composite membrane of the present invention for electronic skin substrate is also able to maintain original bullet during contacting with human skin
Property and suppleness and silk fibroin/chitosan blend nanofiber film equally with good elasticity and good biocompatibility it is multiple
It closes, improves user experience so that electronic skin does not have foreign body sensation after being bonded with human skin for electronic skin substrate
Effect；
(3), composite membrane and aprowl not easily to fall off, good security of the present invention for electronic skin substrate.
Specific embodiment
In the following, the present invention will be further described in detail by way of specific embodiments, but this should not be interpreted as to the present invention
Range be only limitted to example below.Without departing from the idea of the above method of the present invention, according to ordinary skill
The various replacements or change that knowledge and customary means are made, should be included in the scope of the present invention.
Embodiment 1
(a) regenerated silk fibroin 200g is dissolved in preparation fibroin albumen spinning solution A in 4L formic acid by；180g chitosan is dissolved
Chitosan spinning solution B is prepared in 4L trifluoroacetic acid；
(b) fibroin albumen spinning solution A and 0.5Kg the chitosan spinning solution B that takes 1.5Kg (a) step to be prepared is uniformly mixed
To blend spinning liquid C；(c) the blend spinning liquid C that (b) step is prepared is carried out gas spinning spinning by, obtain fibroin albumen/
Chitosan blend nano fibrous membrane；
(d) silica gel solution is atomized atomized silica gel, then fibroin albumen/shell that (c) step is prepared using atomizer by
Glycan blending nano-fiber membrane contacts to obtain wet film with atomization silica gel, is warming up to 60-80 DEG C of drying to obtain for electronic skin
The composite membrane of substrate.The composite membrane for electronic skin substrate being prepared, see Table 1 for details for the elongation of composite membrane.
Embodiment 2
(a) regenerated silk fibroin 200g is dissolved in preparation fibroin albumen spinning solution A in 2L formic acid by；180g chitosan is dissolved
Chitosan spinning solution B is prepared in 2L trifluoroacetic acid；
(b) fibroin albumen spinning solution A and 0.5Kg the chitosan spinning solution B that takes 1.0Kg (a) step to be prepared is uniformly mixed
To blend spinning liquid C；(c) the blend spinning liquid C that (b) step is prepared is carried out gas spinning spinning by, obtain fibroin albumen/
Chitosan blend nano fibrous membrane；
(d) silica gel solution is atomized atomized silica gel, then fibroin albumen/shell that (c) step is prepared using atomizer by
Glycan blending nano-fiber membrane contacts to obtain wet film with atomization silica gel, is warming up to 60-80 DEG C and is dried to obtain for electronic skin base
The composite membrane at bottom.The composite membrane for electronic skin substrate being prepared, see Table 1 for details for the elongation of composite membrane.
Embodiment 3
(a) regenerated silk fibroin 220g is dissolved in preparation fibroin albumen spinning solution A in 2L formic acid by；160g chitosan is dissolved
Chitosan spinning solution B is prepared in 2L trifluoroacetic acid；
(b) fibroin albumen spinning solution A and 0.5Kg the chitosan spinning solution B that takes 1.5Kg (a) step to be prepared is uniformly mixed
To blend spinning liquid C；(c) the blend spinning liquid C that (b) step is prepared is carried out gas spinning spinning by, obtain fibroin albumen/
Chitosan blend nano fibrous membrane；
(d) silica gel solution is atomized atomized silica gel, then fibroin albumen/shell that (c) step is prepared using atomizer by
Glycan blending nano-fiber membrane contacts to obtain wet film with atomization silica gel, is warming up to 60-80 DEG C of drying to obtain for electronic skin
The composite membrane of substrate.The composite membrane for electronic skin substrate being prepared, see Table 1 for details for the elongation of composite membrane.
Embodiment 4
(a) regenerated silk fibroin 180g is dissolved in preparation fibroin albumen spinning solution A in 2L formic acid by；140g chitosan is dissolved
Chitosan spinning solution B is prepared in 2L trifluoroacetic acid；
(b) fibroin albumen spinning solution A and 0.5Kg the chitosan spinning solution B that takes 1.5Kg (a) step to be prepared is uniformly mixed
To blend spinning liquid C；(c) the blend spinning liquid C that (b) step is prepared is carried out gas spinning spinning by, obtain fibroin albumen/
Chitosan blend nano fibrous membrane；
(d) silica gel solution is atomized atomized silica gel, then fibroin albumen/shell that (c) step is prepared using atomizer by
Glycan blending nano-fiber membrane contacts to obtain wet film with atomization silica gel, is warming up to 60-80 DEG C and is dried to obtain for electronic skin base
The composite membrane at bottom.The composite membrane for electronic skin substrate being prepared, see Table 1 for details for the elongation of composite membrane.
Embodiment 5
(a) regenerated silk fibroin 160g is dissolved in preparation fibroin albumen spinning solution A in 2L formic acid by；140g chitosan is dissolved
Chitosan spinning solution B is prepared in 2L trifluoroacetic acid；
(b) fibroin albumen spinning solution A and 1.5Kg the chitosan spinning solution B that takes 1.5Kg (a) step to be prepared is uniformly mixed
To blend spinning liquid C；(c) the blend spinning liquid C that (b) step is prepared is carried out gas spinning spinning by, obtain fibroin albumen/
Chitosan blend nano fibrous membrane；
(d) silica gel solution is atomized atomized silica gel, then fibroin albumen/shell that (c) step is prepared using atomizer by
Glycan blending nano-fiber membrane contacts to obtain wet film with atomization silica gel, is warming up to 60-80 DEG C and is dried to obtain for electronic skin base
The composite membrane at bottom.The composite membrane for electronic skin substrate being prepared, see Table 1 for details for the elongation of composite membrane.
Comparative example 1
(a) regenerated silk fibroin 160g is dissolved in preparation fibroin albumen spinning solution A in 2L formic acid by；
(b) the fibroin albumen spinning solution A that takes 1.5Kg (a) step to be prepared carries out gas spinning spinning, obtains nanofiber
Film；
(d) silica gel solution is atomized atomized silica gel using atomizer by, then the fibroin albumen that (c) step is prepared is received
Rice tunica fibrosa contacts to obtain wet film with atomization silica gel, is warming up to the 60-80 DEG C of composite membrane being dried to obtain for electronic skin substrate.
Comparative example 1 is not added with chitosan spinning.The composite membrane for electronic skin substrate being prepared, the elongation of composite membrane are detailed in
Table 1.
Comparative example 2
(a) 140g chitosan is dissolved in preparation chitosan spinning solution B in 2L trifluoroacetic acid by；
(b) takes 1.5Kg chitosan spinning solution B to be uniformly mixed and obtains blend spinning liquid C；Gas spinning spinning is carried out, chitosan is obtained
Blending nano-fiber membrane；
(d) silica gel solution is atomized atomized silica gel, then the chitosan nano that (c) step is prepared using atomizer by
Tunica fibrosa contacts to obtain wet film with atomization silica gel, is warming up to the 60-80 DEG C of composite membrane being dried to obtain for electronic skin substrate.It is right
Ratio 2 does not use silk-fibroin, and the composite membrane for electronic skin substrate being prepared, see Table 1 for details for the elongation of composite membrane.
Comparative example 3
(a) regenerated silk fibroin 160g is dissolved in preparation fibroin albumen spinning solution A in 2L formic acid by；140g chitosan is dissolved
Chitosan spinning solution B is prepared in 2L trifluoroacetic acid；
(b) fibroin albumen spinning solution A and 1.5Kg the chitosan spinning solution B that takes 1.5Kg (a) step to be prepared is uniformly mixed
To blend spinning liquid C；(c) the blend spinning liquid C that (b) step is prepared is carried out gas spinning spinning by, obtain fibroin albumen/
Chitosan blend nano fibrous membrane is as the composite membrane for being used for electronic skin substrate.Layer of silica gel is not used in comparative example 3.It is prepared
The composite membrane for electronic skin substrate, see Table 1 for details for the elongation of composite membrane.
Obtained composite membrane is used to be close to skin experiment, the external world uses 100HZ vibratory stimulation 5min after being close to skin, with
Experience the irritation to skin.
1 embodiment of table and comparative example are used for the composite membrane of electronic skin substrate
| Number | Elongation | To the irritation of skin |
| Embodiment 1 | 165% | It is non-stimulated |
| Embodiment 2 | 174% | It is non-stimulated |
| Embodiment 3 | 168% | It is non-stimulated |
| Embodiment 4 | 184% | It is non-stimulated |
| Embodiment 5 | 191% | It is non-stimulated |
| Comparative example 1 | 151% | It is non-stimulated, have viscous sweat |
| Comparative example 2 | 143% | It is non-stimulated, have viscous sweat |
| Comparative example 3 | 154% | It is irritant |
Claims (7)
1. a kind of preparation method of the composite membrane for electronic skin substrate, which is characterized in that the preparation method is as follows:
(a) regenerated silk fibroin is dissolved in preparation fibroin albumen spinning solution A in formic acid by；Dissolve the chitosan in trifluoroacetic acid
Middle preparation chitosan spinning solution B；
(b) fibroin albumen spinning solution A described in (a) step and chitosan spinning solution B is uniformly mixed and obtains blend spinning liquid C by；
(c) blend spinning liquid C described in (b) step is carried out spinning by, obtains silk fibroin/chitosan blend nanofiber film；
(d) one layer of pellosil is coated on silk fibroin/chitosan blend nanofiber film described in (c) step to get to being used for
The composite membrane of electronic skin substrate.
2. a kind of preparation method of composite membrane for electronic skin substrate according to claim 1, which is characterized in that
(a) mass volume ratio of regenerated silk fibroin and formic acid solution described in step is 50~110g/L.
3. a kind of preparation method of composite membrane for electronic skin substrate according to claim 1, which is characterized in that
(a) mass volume ratio of chitosan and trifluoroacetic acid described in step is 15~45g/L.
4. a kind of preparation method of composite membrane for electronic skin substrate according to claim 1, which is characterized in that
(b) mass ratio of fibroin albumen spinning solution A described in step and chitosan spinning solution B are 4~9:1~4.
5. a kind of preparation method of composite membrane for electronic skin substrate according to claim 1, which is characterized in that
(c) spinning process described in step is gas spinning or electrostatic spinning.
6. a kind of preparation method of composite membrane for electronic skin substrate according to claim 1, which is characterized in that
(d) method of one layer of pellosil is coated with described in step on silk fibroin/chitosan blend nanofiber film are as follows: use atomizer
Silica gel solution is atomized atomized silica gel, then by silk fibroin/chitosan blend nanofiber film described in (c) step and is atomized
Silica gel contacts to obtain wet film, is warming up to 60-80 DEG C of drying.
7. a kind of composite membrane for electronic skin substrate, which is characterized in that described a kind of for the compound of electronic skin substrate
Film is prepared using method described in any one of claims 1-6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201810952803.5A CN109183274A (en) | 2018-08-21 | 2018-08-21 | A kind of composite membrane and preparation method for electronic skin substrate |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810952803.5A CN109183274A (en) | 2018-08-21 | 2018-08-21 | A kind of composite membrane and preparation method for electronic skin substrate |
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| CN (1) | CN109183274A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111765995A (en) * | 2020-07-06 | 2020-10-13 | 东华大学 | Self-driven antibacterial flexible electronic skin and preparation method thereof |
| CN112326743A (en) * | 2020-11-05 | 2021-02-05 | 重庆医科大学 | C-SF-FA flexible conductive film based on silk fibroin, wearable wound monitoring sensor and preparation method of wearable wound monitoring sensor |
-
2018
- 2018-08-21 CN CN201810952803.5A patent/CN109183274A/en not_active Withdrawn
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111765995A (en) * | 2020-07-06 | 2020-10-13 | 东华大学 | Self-driven antibacterial flexible electronic skin and preparation method thereof |
| CN112326743A (en) * | 2020-11-05 | 2021-02-05 | 重庆医科大学 | C-SF-FA flexible conductive film based on silk fibroin, wearable wound monitoring sensor and preparation method of wearable wound monitoring sensor |
| CN112326743B (en) * | 2020-11-05 | 2024-01-16 | 重庆医科大学 | C-SF-FA flexible conductive film based on silk fibroin, wearable wound monitoring sensor and preparation method thereof |
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