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Protein/Polysaccharide Composite Nanofilm and Its Application to Prevent Cracks in Conductive Coatings

A nano-film and polysaccharide composite technology, which is applied in coating, metal material coating process, vacuum evaporation plating, etc., can solve the problems that are not suitable for industrial production, time-consuming dopamine modification process, expensive dopamine, etc., to expand options properties, increased roughness and surface area, and improved adhesion properties

Active Publication Date: 2022-06-28
SHAANXI NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Dopamine, a biomaterial found in mussels, allows self-deposition of attached conductive coating films on almost all material surfaces by simple dipping in an alkaline solution, however, dopamine is expensive, The dopamine modification process is time-consuming (24 hours) and therefore not suitable for industrial production

Method used

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  • Protein/Polysaccharide Composite Nanofilm and Its Application to Prevent Cracks in Conductive Coatings
  • Protein/Polysaccharide Composite Nanofilm and Its Application to Prevent Cracks in Conductive Coatings
  • Protein/Polysaccharide Composite Nanofilm and Its Application to Prevent Cracks in Conductive Coatings

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0054] 0.1433g tris (2-carboxyethyl) phosphonate is added in 10mL 10mmol / L pH value is in the 4-hydroxyethylpiperazine ethanesulfonic acid buffer solution of 7.4, is mixed with 50mmol / L tris (2-carboxyethyl) ) 4-hydroxyethylpiperazine ethanesulfonic acid buffer solution of phosphonate (pH=1.80), and then adjust its pH value to 6.0 with NaOH, which is recorded as solution 1; 5mL of 5mg / mL lysozyme aqueous solution and 5mL of 1mg / mL Mix the aqueous solution of sodium alginate and record it as solution 2; mix solution 1 and solution 2 evenly, and let stand for 60 minutes at room temperature to form a nano-film at the solid-liquid interface; then immerse the nano-film in a 2% mass concentration In an aqueous solution of glutaraldehyde, cross-linking was performed at room temperature for 2 hours to obtain a lysozyme / sodium alginate composite nanofilm.

Embodiment 2

[0056] In this example, the 1 mg / mL sodium alginate aqueous solution in Example 1 was replaced with an equal volume of 1 mg / mL chitosan aqueous solution, and other steps were the same as in Example 1 to obtain a lysozyme / chitosan composite nanofilm.

Embodiment 3

[0058] In this example, the 1 mg / mL sodium alginate aqueous solution in Example 1 was replaced with an equal volume of 1 mg / mL sodium carboxymethyl cellulose aqueous solution, and other steps were the same as in Example 1 to obtain lysozyme / sodium carboxymethyl cellulose composite nanofilm.

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Abstract

The invention discloses a protein / polysaccharide composite nano-film and its application for preventing cracks in a conductive coating. The protein / polysaccharide composite nano-film is a nano-film formed by a phase-transition protein and polysaccharide at a solid-liquid interface and cross-linked with a cross-linking agent. The electropositive composite nano-film obtained after coupling. The composite nano-film of the present invention can be prepared in a large area, the preparation method is simple, and it has good stability and optical transparency; and because the composite nano-film has positive charge and various groups, it can absorb conductive coatings and reduce Due to the microcracks formed under the bending action, the conductive coating maintains the stable conductivity of the flexible device. When used as the substrate for making OLED devices, it can still maintain the stability of the light-emitting organic layer and the stability of the current density after bending.

Description

technical field [0001] The invention belongs to the technical field of biological materials and conductive materials, and in particular relates to a composite nano-film based on protein and polysaccharide, and the application of the composite nano-film in effectively keeping a conductive coating without cracks under bending force. Background technique [0002] The micro-nano-scale functional structure of materials not only brings about the intensification of raw materials and energy, but also promotes the high integration of multi-function and greatly reduces the production cost. The continuous innovation of micro-nano manufacturing technology has created the vigorous development of the modern information industry. Among them, flexible electronics, also known as plastic electronics, printed electronics, and organic electronics, is an emerging electronic technology that makes organic / inorganic material electronic devices on flexible / extensible plastics or conductive substrate...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L89/00C08L5/04C08L5/08C08L1/28C08L1/02C08L5/12C08L5/00C08J5/18C08J3/24C08J7/00C23C18/20C23C14/02C23C14/34C08L23/06
CPCC08J5/18C08J3/246C08J7/00C23C18/2006C23C14/024C23C14/34C08J2389/00C08J2405/04C08J2405/08C08J2401/28C08J2401/02C08J2405/12C08J2405/00C08J2305/04C08J2489/00C08J2323/06
Inventor 杨鹏陈蒙蒙
Owner SHAANXI NORMAL UNIV
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