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Transparent and conductive silk fibroin material and preparation method thereof

A silk fibroin, transparent and conductive technology, applied in photovoltaic power generation, prosthesis, coating, etc., can solve the problem of lack of transparency of regenerated silk fibroin material, and achieve the effect of good conductive network structure, uniform and dense structure

Active Publication Date: 2019-06-21
苏州吴绵丝绸科技有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, since the thickness of the conductive layer has an opposite effect on the conductivity and transparency of the material, the resulting regenerated silk fibroin material still lacks transparency while ensuring sufficient conductivity.

Method used

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  • Transparent and conductive silk fibroin material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] A method for transparent conductive silk fibroin material, the steps are as follows:

[0047] (1) Add SDS in the aqueous solution of EDOT-OH whose concentration is 30mmol / L, obtain the EDOT-OH aqueous solution containing SDS colloid, the molar ratio of SDS and EDOT-OH is 0.8:1;

[0048] (2) Carry out insolubilization treatment to silk fibroin material;

[0049] First, silkworm cocoons are boiled and degummed in a sodium carbonate solution with a mass fraction of 0.5%, then dissolved in a 9.0M lithium bromide solution, then dialyzed in deionized water through a regenerated cellulose membrane and concentrated to a concentration of 10wt%, and finally the concentrated solution is cast After being drip-coated on a polydimethylsiloxane (PDMS) substrate and dried to form a thin film, soaked in an 80% ethanol aqueous solution to promote the transformation of the secondary structure of the product to a β-sheet to generate a water-insoluble product, Obtain silk fibroin film afte...

Embodiment 2

[0064] A method for transparent conductive silk fibroin material, the steps are as follows:

[0065] (1) Add SDS to the aqueous solution of EDOT-OH with a concentration of 30mmol / L to obtain an aqueous solution of EDOT-OH containing SDS colloid, and the molar ratio of SDS to EDOT-OH is 0.6:1;

[0066] (2) Carry out insolubilization treatment to silk fibroin material;

[0067]First, silkworm cocoons are boiled and degummed in a sodium carbonate solution with a mass fraction of 0.5%, then dissolved in a 9.0M lithium bromide solution, then dialyzed in deionized water through a regenerated cellulose membrane and concentrated to a concentration of 20wt%, and finally the concentrated solution is cast. After being drip-coated onto the plane and the PDMS substrate with raised microchannel patterns and dried to form a thin film, a layer of silk fibroin solution is coated on both sides and pressed together, and heat-treated at 70°C for 18 hours to obtain the insolubilization treatment ...

Embodiment 3

[0076] A method for transparent conductive silk fibroin material, the steps are as follows:

[0077] (1) Adding SDS in the aqueous solution of EDOT whose concentration is 30mmol / L obtains the EDOT aqueous solution containing SDS colloid, and the molar ratio of SDS and EDOT is 0.4:1;

[0078] (2) Carry out insolubilization treatment to silk fibroin material;

[0079] First, silkworm cocoons are boiled and degummed in a sodium carbonate solution with a mass fraction of 0.5%, then dissolved in a 9.0M lithium bromide solution, then dialyzed in deionized water through a regenerated cellulose membrane and concentrated to a concentration of 15wt%, and finally press the same method as in Example 1 Casting method to obtain silk fibroin film after insolubilization treatment;

[0080] (3) Place the insolubilized silk fibroin film in EDOT aqueous solution containing SDS colloid and vibrate at 20°C for 30 minutes, and the mass / volume ratio of the two is 1 mg / mL;

[0081] (4) adding hydro...

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Abstract

The invention relates to a transparent and conductive silk fibroin material and a preparation method thereof. The preparation method comprises the following steps: a transparent silk fibroin materialsubjected to insolubilization treatment is put in a water solution of EDOT (3,4-ethoxylene dioxy thiophene) containing SDS (sodium dodecyl sulfonate) or an EDOT derivative and are subjected to oxidation polymerization under the action of ferric trichloride and ammonium persulfate, so that the transparent and conductive silk fibroin material is prepared. The prepared transparent and conductive silkfibroin material mainly comprises a transparent substrate layer and a transparent conductive layer depositing on the surface of the transparent substrate layer, the substrate layer is made of silk fibroin, the surface sheet resistance of the transparent and conductive silk fibroin material is (6*10<4>)-(1*10<5>) omega, and the highest light transmittance of a visible light area reaches 65%-75%. The preparation process is simple and mild, and the prepared transparent and conductive silk fibroin material has good conductivity and higher transparency.

Description

technical field [0001] The invention belongs to the technical field of silk fibroin material modification, and relates to a transparent conductive silk fibroin material and a preparation method thereof, in particular to a transparent conductive silk fibroin material with both conductivity and transparency and a preparation method thereof. Background technique [0002] Silk fibroin is a natural polymer material that is non-toxic, non-irritating to the human body and has good biocompatibility and biodegradability. It has great application potential in the preparation of tissue engineering materials with nerve stimulation and repair functions. [0003] Electrical stimulation can affect the growth and migration of nerve cells. Electrical stimulation is a treatment method for nerve injury that has clinical application potential and is gradually developing. Conductive modification of silk fibroin materials to construct micro-electromechanical systems that can be applied in vivo or...

Claims

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Application Information

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IPC IPC(8): C08J7/04C08J9/36A61L27/02A61L27/22A61L27/50C08L89/00
CPCY02E10/549
Inventor 张耀鹏庄奥朱波范苏娜张慧慧邵惠丽聂华丽
Owner 苏州吴绵丝绸科技有限公司
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