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Porous silicon rubber thin film containing graphene as well as preparation method and application thereof

A rubber film and graphene technology, applied in medical science, bandages, prostheses, etc., to achieve the effects of good product safety, avoid bacterial infection, and promote wound healing

Active Publication Date: 2017-11-03
SICHUAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, as far as we know, there is no research report on the use of graphene-containing porous silicone rubber films as artificial skin or wound dressings.

Method used

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  • Porous silicon rubber thin film containing graphene as well as preparation method and application thereof
  • Porous silicon rubber thin film containing graphene as well as preparation method and application thereof
  • Porous silicon rubber thin film containing graphene as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] Add 4g of medical liquid high-temperature curing silicone rubber K-1008A / B resin (A:B=1:1), 3.2g of liquid paraffin and 0.04g of multilayer graphene into 8.8g of tetrahydrofuran, stir and dissolve at room temperature to obtain a uniform composition Membrane liquid, stand still or vacuum degassing for 5min. Use a film applicator to coat a film on a polytetrafluoroethylene plate, and place it naturally at 25°C for 60 minutes, and the solvent will volatilize and cause phase separation. Next, place the embryo film at 100°C to cure for 20 minutes. After the silicone rubber is cured, remove the silicone rubber film from the polytetrafluoroethylene plate, soak it in n-hexane at 65°C for 4 days, and replace the solution once a day. After 4 days, take out the silicone rubber film from n-hexane, soak in ethanol to remove n-hexane, take out the film from ethanol and place it at room temperature, and obtain a graphene-containing porous silicone rubber film after the ethanol is comp...

Embodiment 2

[0042] Add 4g of medical liquid high-temperature curing silicone rubber K-1008A / B resin (A:B=1:1), 3.2g of liquid paraffin and 0.04g of single-layer graphene into 8.8g of tetrahydrofuran, stir and dissolve at room temperature to obtain a uniform composition Membrane liquid, stand still or vacuum degassing for 5min. Use a film applicator to coat a film on a polytetrafluoroethylene plate, and place it naturally at 25°C for 60 minutes, and the solvent will volatilize and cause phase separation. Next, place the embryo film at 100°C to cure for 20 minutes. After the silicone rubber is cured, remove the silicone rubber film from the polytetrafluoroethylene plate, soak it in n-hexane at 65°C for 4 days, and replace the solution once a day. After 4 days, take out the silicone rubber film from n-hexane, soak in ethanol to remove n-hexane, take out the film from ethanol and place it at room temperature, and obtain a graphene-containing porous silicone rubber film after the ethanol is co...

Embodiment 3

[0044]Add 4g of medical liquid high-temperature curing silicone rubber K-1008A / B resin (A:B=1:1), 3.2g of liquid paraffin and 0.04g of graphene oxide into 8.8g of tetrahydrofuran, stir and dissolve at room temperature to obtain a uniform film solution, stand still or vacuum defoam for 5min. Use a film applicator to coat a film on a polytetrafluoroethylene plate, and place it naturally at 25°C for 60 minutes, and the solvent will volatilize and cause phase separation. Next, place the embryo film at 100°C to cure for 20 minutes. After the silicone rubber is cured, remove the silicone rubber film from the polytetrafluoroethylene plate, soak it in n-hexane at 65°C for 4 days, and replace the solution once a day. After 4 days, take out the silicone rubber film from n-hexane, soak in ethanol to remove n-hexane, take out the film from ethanol and place it at room temperature, and obtain a graphene-containing porous silicone rubber film after the ethanol is completely volatilized, wit...

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Abstract

The invention discloses a porous silicon rubber thin film containing graphene as well as a preparation method and application thereof. The preparation method comprises the following steps: mixing a silicon rubber precursor, a non-solvent or pore-forming agent, a volatile solvent and the graphene according to a certain ratio; carrying out ultrasonic treatment or stirring a mixed solution to obtain a film forming solution; de-foaming the film forming solution to form a film on a template; removing a solvent in a liquid blank film and curing and molding; removing the non-solvent or the pore-forming agent. The porous silicon rubber thin film containing the graphene, which is prepared by the preparation method, can be used as artificial skin or surgical dressing for covering skin defect wounds of mammals. According to the porous silicon rubber thin film containing the graphene as well as the preparation method and the application thereof, phase-separation film forming is induced by utilizing solvent volatilization and pores are formed by adopting a non-solvent or pore-forming agent filtering-out method; a preparation technology is simple and the pore diameter and the thickness of the thin film are controllable; the porous silicon rubber thin film containing the graphene has an ordered porous structure; meanwhile, the graphene has excellent antibacterial activity and can be used for preventing the wounds from being infected by bacteria and promoting the healing of the wounds when the porous silicon rubber thin film is used for the artificial skin.

Description

technical field [0001] The invention relates to a porous silicon rubber film containing graphene, a preparation method and application thereof, and belongs to the technical field of material application. Background technique [0002] The skin is the largest organ of the human body, accounting for 4% to 6% of the body weight, and is composed of the epidermis, dermis and subcutaneous tissue. As a barrier between the human body and the external environment, the skin plays an important role in protecting the stability of the internal environment of the human body. Once the integrity of the skin is destroyed, especially after a severe burn, the skin wound will cause microbial invasion, leading to the destruction of the internal environment of the human body and threatening human health. Due to the limited available autologous skin sources, allogeneic skin grafts cannot survive due to rejection, so an artificial skin / wound dressing with certain strength, toughness, good biocompat...

Claims

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Application Information

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IPC IPC(8): C08J5/18C08J9/26C08J9/28A61L15/26A61L15/18A61L15/46A61L15/42A61L27/18A61L27/08A61L27/60A61L27/56A61L27/50C08L83/04
CPCA61L15/18A61L15/26A61L15/42A61L15/46A61L27/08A61L27/18A61L27/50A61L27/56A61L27/60C08J5/18C08J9/26C08J9/28C08J2383/04C08L83/04
Inventor 夏和生罗高兴虎晓东钱卫王颖王占华费国霞
Owner SICHUAN UNIV
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