Method for preparing medical antibacterial cotton gauze
The technology of antibacterial cotton and cotton gauze is applied in the field of preparation of medical antibacterial cotton gauze, which can solve the problems of poor microorganism resistance, poor antibacterial effect, and need to improve water absorption performance, and achieve the effect of improving water absorption performance and good antibacterial effect.
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[0021] Example 1
[0022] A preparation method of medical antibacterial cotton gauze includes the following steps:
[0023] (1) Puffing pretreatment of cotton gauze: using sodium hydroxide solution as swelling agent, performing puffing pretreatment at a temperature of 20°C, the mass percentage concentration of sodium hydroxide solution is 15%, and the treatment time is 8 min;
[0024] (2) Carboxymethylation modification treatment on the pretreated cotton gauze: sodium hydroxide and chloroacetic acid are used for carboxymethylation modification treatment, the treatment time is 40min, the molar ratio of sodium hydroxide and chloroacetic acid is 2 :1, the mass percentage concentration of sodium hydroxide solution is 25%, and the mass ratio of chloroacetic acid to cotton gauze is 1.6:1;
[0025] (3) Washing with water: Washing with water several times at a temperature of 35°C, so that the cotton gauze does not contain acid or alkali;
[0026] (4) Antibacterial treatment: Put the washed cot...
Example Embodiment
[0029] Example 2
[0030] A preparation method of medical antibacterial cotton gauze includes the following steps:
[0031] (1) Puffing pretreatment of cotton gauze: using sodium hydroxide solution as swelling agent, puffing pretreatment at a temperature of 25°C, the mass percentage concentration of sodium hydroxide solution is 10%, and the treatment time is 10 minutes;
[0032] (2) Carboxymethylation modification treatment on the pretreated cotton gauze: sodium hydroxide and chloroacetic acid are used for carboxymethylation modification treatment, the treatment time is 30min, and the molar ratio of sodium hydroxide and chloroacetic acid is 2.5 :1, the mass percentage concentration of sodium hydroxide solution is 20%, and the mass ratio of chloroacetic acid to cotton gauze is 1.8:1;
[0033] (3) Washing with water: Washing with water several times at a temperature of 40℃, so that the cotton gauze does not contain acid or alkali;
[0034] (4) Antibacterial treatment: Put the washed cott...
Example Embodiment
[0037] Example 3
[0038] A preparation method of medical antibacterial cotton gauze includes the following steps:
[0039] (1) Puffing pretreatment of cotton gauze: using sodium hydroxide solution as swelling agent, puffing pretreatment at a temperature of 23°C, the mass percentage concentration of sodium hydroxide solution is 12%, and the treatment time is 12 minutes;
[0040] (2) Carboxymethylation modification treatment on the pretreated cotton gauze: sodium hydroxide and chloroacetic acid are used for carboxymethylation modification treatment, the treatment time is 35min, and the molar ratio of sodium hydroxide and chloroacetic acid is 2.2 :1, the mass percentage concentration of sodium hydroxide solution is 23%, and the mass ratio of chloroacetic acid to cotton gauze is 1.7:1;
[0041] (3) Washing with water: Washing with water for several times, the washing temperature is 45℃, so that the cotton gauze does not contain acid or alkali;
[0042] (4) Antibacterial treatment: Put the...
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