Antibacterial modified chitosan foaming agent and preparation method thereof
A chitosan and foaming agent technology, which is applied in the directions of topical antibacterial agents, pharmaceutical formulations, and aerosol delivery, can solve the problems of many varieties of drug dressings, complicated production processes, and complicated production methods, and achieves improved antibacterial broad-spectrum performance. , the physical properties are stable, and the effect of improving biological safety
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Embodiment 1
[0092] Embodiment 1: prepare antibacterial modified chitosan foam agent
[0093] The implementation steps of this embodiment are as follows:
[0094] A, preparation of modified chitosan
[0095] To be sold by Jinan Haidebei Marine Bioengineering Co., Ltd. under the trade name of food and pharmaceutical grade chitosan, with a deacetylation degree of 70% and a molecular weight of 30×10 4 The chitosan of Da, dissolves 15min under the condition of stirring speed 250rpm in 2% acetic acid aqueous solution by weight, the solution that obtains is in the ultrasonic cleaning machine sold by trade name YD1008 ultrasonic cleaning machine by Changzhou Youda Ultrasonic Equipment Co., Ltd. In the process, ultrasonic treatment was carried out for 45 minutes under the conditions of ultrasonic frequency 20kHz and power 200W, and then the polyvinylidene fluoride ultrafiltration membrane sold by the American KENKER company under the trade name polyvinylidene fluoride membrane was used for classi...
Embodiment 2
[0105] Embodiment 2: prepare antibacterial modified chitosan foam agent
[0106] The implementation steps of this embodiment are as follows:
[0107] A, preparation of modified chitosan
[0108] To be sold by Jinan Haidebei Marine Bioengineering Co., Ltd. under the trade name of food and pharmaceutical grade chitosan, with a deacetylation degree of 70% and a molecular weight of 40×10 4 The chitosan of Da, dissolves 8min under the condition of stirring speed 280rpm in 1% acetic acid aqueous solution by weight, the solution that obtains is in the ultrasonic cleaning machine sold by trade name YD1008 ultrasonic cleaning machine by Changzhou Youda Ultrasonic Equipment Co., Ltd. In the process, ultrasonic treatment was carried out for 30 minutes under the conditions of ultrasonic frequency 22kHz and power 180W, and then the polyvinylidene fluoride ultrafiltration membrane sold by the American KENKER company under the trade name polyvinylidene fluoride membrane was used for classif...
Embodiment 3
[0118] Embodiment 3: prepare antibacterial modified chitosan foam agent
[0119] The implementation steps of this embodiment are as follows:
[0120] A, preparation of modified chitosan
[0121] To be sold by Jinan Haidebei Marine Bioengineering Co., Ltd. under the trade name of food and pharmaceutical grade chitosan, deacetylation degree 70%, molecular weight 50×10 4 The chitosan of Da, dissolves 12min under the condition of stirring speed 320rpm in 1% acetic acid aqueous solution by weight, the solution that obtains is in the ultrasonic cleaning machine sold by trade name YD1008 ultrasonic cleaning machine by Changzhou Youda Ultrasonic Equipment Co., Ltd. In the process, ultrasonic treatment was carried out for 50 minutes under the conditions of ultrasonic frequency 24kHz and power 220W, and then the polyvinylidene fluoride ultrafiltration membrane sold by the American KENKER company under the trade name polyvinylidene fluoride membrane was used for classification, and in t...
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