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Preparation method of antibacterial silk fibroin fibrous membrane

An antibacterial silk and vegan fiber technology, which is applied in the preparation of spinning solutions, textiles, papermaking, non-woven fabrics, etc., can solve the problems of wide application of unfavorable material synthesis and complicated operation, and achieve low cost, simple operation steps and high efficiency Effect

Inactive Publication Date: 2013-10-23
SHANGHAI NAT ENG RES CENT FORNANOTECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Many methods have been used to prepare silver nanoparticles, but these methods are complicated to operate, which is not conducive to the wide application of material synthesis

Method used

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  • Preparation method of antibacterial silk fibroin fibrous membrane
  • Preparation method of antibacterial silk fibroin fibrous membrane

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] (1) Prepare 0.01mol / L silver nitrate solution, add ammonia water until a clear and transparent solution of silver ammonia complex and ions is formed. Add n-octanol equal to the volume of silver ammonia and ionic solution, and add 1% sodium dodecyl sulfate to account for the mass percentage of the entire solution, stir evenly, let stand for 2 hours, then transfer the reaction solution to polytetrafluoroethylene In the ethylene reaction kettle, pulse microwave irradiation for 3 minutes, and the pulse microwave power is 500w; after the reaction, the reaction kettle is naturally cooled to 60°C, the product is filtered, washed with absolute ethanol and water several times, and vacuum-dried to obtain silver Nanoparticles.

[0022] (2) Put silkworm cocoons into a sodium carbonate solution with a mass percentage concentration of 0.5% and stir, boil for 60 minutes to remove sericin on the surface of silkworm cocoons, squeeze dry, wash with water, and dry at 60°C to prepare silk ...

Embodiment 2

[0027] (1) Prepare 0.1mol / L silver acetate solution, add ammonia water until a clear and transparent silver ammonia complex and ion solution is formed. Add n-butanol equal to the volume of silver ammonia and ionic solution, and add 10% triton at a mass percentage concentration of the entire solution, stir evenly, let stand for 2 hours, then transfer the reaction solution to a polytetrafluoroethylene reactor In the process, the pulsed microwave was irradiated for 10 minutes, and the pulsed microwave power was 300w; after the reaction, the reaction kettle was naturally cooled to 60°C, the product was filtered, washed several times with absolute ethanol and water, and vacuum-dried to obtain silver nanoparticles.

[0028] (2) Put silkworm cocoons into a sodium carbonate solution with a mass percentage concentration of 0.5% and stir, boil for 60 minutes to remove sericin on the surface of silkworm cocoons, squeeze dry, wash with water, and dry at 60°C to prepare silk fibroin fibers....

Embodiment 3

[0033] (1) Prepare 0.5mol / L silver acetate solution, add ammonia water until a clear and transparent silver ammonia complex and ion solution is formed. Add n-butanol equal to the volume of silver ammonia and ion solution, and add 5% hexadecyltrimethylammonium bromide to account for the mass percentage of the entire solution, stir evenly, let stand for 2 hours, then transfer the reaction solution Put it into a polytetrafluoroethylene reactor, irradiate with pulsed microwave for 3 minutes, and the power of pulsed microwave is 500w; after the reaction, the reactor is naturally cooled to 60°C, and the product is filtered, washed several times with absolute ethanol and water, and vacuum-dried , to obtain silver nanoparticles.

[0034] (2) Put silkworm cocoons into a sodium carbonate solution with a mass percentage concentration of 0.5% and stir, boil for 60 minutes to remove sericin on the surface of silkworm cocoons, squeeze dry, wash with water, and dry at 60°C to prepare silk fi...

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Abstract

The invention relates to a preparation method of an antibacterial silk fibroin fibrous membrane. The preparation method comprises the following steps: dissolving silver salt into water and adding aqua ammonia to form clarifying transparent silver ammino and an ionic solution firstly; adding water-insoluble fatty alcohol, and adopting a microwave irradiation technology to prepare silver nanoparticles; adding the obtained silver nanoparticles into a prepared silk fibroin solution, mixing the obtained silver nanoparticles and the prepared silk fibroin solution, so as to form a spinning solution; then preparing the antibacterial silk fibroin fibrous membrane through a static spinning technology. According to the preparation method provided by the invention, the method is simple, an interface system is regarded as a reaction medium, so that the products can be transferred between different phases, the surface adsorbent can be replaced, and good uniformity of the nanoparticles can be guaranteed; the microwave irradiation technology is adopted, so that the crystallization speed of the products can be improved, the operating steps are simple, the cost is low, the reaction speed is high, the efficiency is high, and a certain universality is provided; the nano-silver has hydrophobicity and can be dispersed into the silk fibroin solution very well, which is further in favor of preparing antibacterial silk fibroin membrane with good uniformity.

Description

technical field [0001] The invention relates to the preparation of a nanometer material and antibacterial products based on it, in particular to a method for preparing nanometer silver particles and an antibacterial silk fibrous film based on it. The method belongs to the preparation technology of nanometer materials and products thereof, and the prepared materials can be widely used in fields such as biology and medicine. Background technique [0002] Silk fibroin is a protein extracted from silk. It has good biocompatibility and can be prepared into various forms of materials such as films, gels, and microcapsules. Due to its unique physical and chemical properties, silk fibroin is currently Materials have been widely studied in the field of biomedical materials, such as immobilized enzyme materials, cell culture substrates, drug release agents, artificial organs and so on. In order to improve the performance of silk fibroin and make it better used in the field of biomate...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D04H3/00D04H3/16D01D1/02
Inventor 周涓朱君施丽君何丹农
Owner SHANGHAI NAT ENG RES CENT FORNANOTECH
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