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A kind of highly elastic antibacterial eco-friendly dressing and preparation method thereof

A friendly and ecological technology, applied in filament/thread forming, bandage, fiber treatment, etc., can solve the problems of large stretching range, affecting ecological balance, high toxicity of microorganisms and aquatic organisms, and achieve the effect of stability

Active Publication Date: 2022-06-28
浙江海洁亚医疗科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the large displacement and stretching range of the skin at the joint, general dressings cannot fit the joint skin well
[0003] In addition, the commonly used high-efficiency antibacterial agent is silver preparation, but silver is highly toxic to microorganisms and aquatic organisms in the ecological environment, which can greatly affect the ecological balance and cause environmental hazards

Method used

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  • A kind of highly elastic antibacterial eco-friendly dressing and preparation method thereof
  • A kind of highly elastic antibacterial eco-friendly dressing and preparation method thereof
  • A kind of highly elastic antibacterial eco-friendly dressing and preparation method thereof

Examples

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Comparison scheme
Effect test

Embodiment 1

[0027] A kind of high elastic antibacterial eco-friendly dressing and preparation method thereof, comprising the following steps:

[0028] 1. Wash and sun dry 5g of human nails, crush them, soak them in 20ml of liquid alkali solution with a mass concentration of 40% together with 0.35g of sodium sulfide at 90°C for 16h, filter them, and ultrafilter them with a molecular weight cut-off of 5000 to obtain a retentate. dry human nail keratin;

[0029] 2. Add 1 g of human nail keratin prepared in step 1, 12 g of zein, 4 g of polypyrrole with a conductivity of 30 S / cm, and 4 g of thermoplastic polyurethane elastomer with a glass transition temperature of 110 ° C into 100 ml of dimethyl ethyl acetate. In the amide, after fully stirring, the slurry is spray-dried to obtain the precursor powder;

[0030] 3. The precursor powder obtained in step 2 is heated and melted under a nitrogen atmosphere, and the temperature is 190° C., the voltage is 18kv, the distance is 18cm, and the injecti...

Embodiment 2

[0033] A kind of high elastic antibacterial eco-friendly dressing and preparation method thereof, comprising the following steps:

[0034] 1. Wash and sun dry 5g of human nails, crush them, soak them in 15ml of liquid alkali solution with a mass concentration of 40% together with 0.3g of sodium sulfide at 80°C for 12h, filter them, and use ultrafiltration with a molecular weight cut-off of 5000 to obtain a retentate. dry human nail keratin;

[0035] 2. Add 0.5 g of human nail keratin prepared in step 1, 10 g of zein, 3 g of polypyrrole with a conductivity of 10 S / cm, and 2 g of thermoplastic polyurethane elastomer with a glass transition temperature of 100 ° C into 100 ml of dimethyl In acetamide, after fully stirring, the slurry is spray-dried to obtain the precursor powder;

[0036] 3. The precursor powder obtained in step 2 is heated and melted under a nitrogen atmosphere, and the temperature is 180° C., the voltage is 15kv, the distance is 15cm, and the injection rate is ...

Embodiment 3

[0039] A kind of high elastic antibacterial eco-friendly dressing and preparation method thereof, comprising the following steps:

[0040] 1. Wash and sun dry 5g of human nails, crush them, soak them in 25ml of liquid alkali solution with a mass concentration of 40% together with 0.4g of sodium sulfide at 100°C for 18h, filter, and ultrafilter with a molecular weight cut-off of 5000 to obtain a retentate, spray dry human nail keratin;

[0041] 2. Add 2 g of human nail keratin prepared in step 1, 15 g of zein, 5 g of polypyrrole with a conductivity of 50 S / cm, and 5 g of thermoplastic polyurethane elastomer with a glass transition temperature of 125 ° C into 100 ml of dimethyl ethyl acetate. In the amide, after fully stirring, the slurry is spray-dried to obtain the precursor powder;

[0042] 3. The precursor powder obtained in step 2 is heated and melted under a nitrogen atmosphere, and the temperature is 200° C., the voltage is 20kv, the distance is 20cm, and the injection r...

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Abstract

The invention belongs to the field of biomedical materials, and in particular relates to a high-elastic antibacterial eco-friendly dressing and a preparation method thereof. The preparation method comprises: dissolving keratin, zein, polypyrrole and polyurethane in dimethylacetamide, after spray drying, heating and melting under nitrogen atmosphere, melting electrospinning, and using tris(2-carboxyethyl ) After phosphine soaking treatment, it is treated with silver cyanate solution and treated with low-temperature plasma to prepare a high-elastic antibacterial eco-friendly dressing. The dressing prepared by the invention has high elasticity, good antibacterial effect, less release of silver ions, and is environmentally friendly.

Description

technical field [0001] The invention belongs to the field of biomedical materials, and in particular relates to a high-elasticity antibacterial eco-friendly dressing and a preparation method thereof. Background technique [0002] Human joints are susceptible to physical and chemical damage during exercise or work, resulting in skin damage. Damaged skin can cause wound infection due to unclean local cleaning. In mild cases, it will cause delayed healing and expansion of the wound, and in severe cases, it will cause serious infection, which in turn can lead to sepsis. However, due to the large displacement and expansion of the skin at the joint, general dressings cannot fit the joint skin well. [0003] In addition, the commonly used high-efficiency antibacterial agent is silver preparation, but silver is highly toxic to microorganisms and aquatic organisms in the ecological environment, which can greatly affect the ecological balance and cause environmental harm. SUMMARY O...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61L15/18A61L15/46A61L15/32A61L15/26A61L15/42D01D5/00D04H1/728
CPCA61L15/18A61L15/46A61L15/32A61L15/26A61L15/42D01D5/0015D04H1/728A61L2300/104A61L2300/404C08L89/00C08L79/04
Inventor 葛彦徐飞妮傅海洪汤佳鹏刘莺
Owner 浙江海洁亚医疗科技有限公司