A kind of temperature-sensitive antibacterial fabric and its preparation method
A sensitive antibacterial and antibacterial technology, applied in the field of temperature sensitive antibacterial fabrics and its preparation, can solve problems such as difficult operation, easy leakage of phase change materials, easy rupture of microcapsules, etc., and achieve good inhibitory effect and excellent antibacterial properties Effect
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[0030] In the present invention, the preparation method of the temperature-sensitive antibacterial nanofiber preferably comprises the following steps:
[0031] Add N-isopropylacrylamide, chitosan, N,N-methylenebisacrylamide, initiator and N,N,N,N-tetramethylethylenediamine to acetic acid solution for free radical polymerization Reaction, obtain chitosan / poly N-isopropylacrylamide interpenetrating network hydrogel;
[0032] Mixing the chitosan / poly N-isopropylacrylamide interpenetrating network hydrogel and polyethylene oxide aqueous solution to obtain an electrospinning solution;
[0033] The electrospinning solution is subjected to electrospinning to obtain temperature-sensitive antibacterial nanofibers.
[0034] The present invention preferably joins N-isopropylacrylamide, chitosan, N,N-methylenebisacrylamide, initiator and N,N,N,N-tetramethylethylenediamine in acetic acid solution Free radical polymerization reaction to obtain chitosan / poly N-isopropylacrylamide interpene...
Embodiment 1
[0049] (1) Under normal temperature conditions, add 4g of N-isopropylacrylamide into 50mL of acetic acid solution with a mass concentration of 2%, and stir continuously. During the stirring process, add 1g of chitosan, 0.15g of N,N- Methylenebisacrylamide, after stirring for 5 minutes, stop stirring, continue to add 0.1g ammonium persulfate and 1mL N,N,N,N-tetramethylethylenediamine to the mixed solution, stir at room temperature until completely dissolved, and prepare Chitosan / poly-N-isopropylacrylamide interpenetrating network hydrogel.
[0050] (2) Add polyethylene oxide (relative molecular mass 40kDa) into 180mL deionized water, heat at 60°C and stir for 4h to prepare a polyethylene oxide aqueous solution containing polyethylene oxide with a concentration of 10g / mL .
[0051] (3) Mix chitosan / poly N-isopropylacrylamide interpenetrating network hydrogel with polyethylene oxide aqueous solution at a volume ratio of 5 / 1, stir at room temperature until uniform, and prepare ch...
Embodiment 2
[0057] (1) Under normal temperature conditions, add 8g of N-isopropylacrylamide into 150mL of acetic acid solution with a mass concentration of 5%, and stir continuously. During the stirring process, add 6g of chitosan, 0.5g of N,N- Methylenebisacrylamide, after stirring for 10 minutes, stop stirring, continue to add 0.5g potassium persulfate and 3mL N,N,N,N-tetramethylethylenediamine to the mixed solution, stir at room temperature until completely dissolved, and prepare Chitosan / poly-N-isopropylacrylamide interpenetrating network hydrogel.
[0058] (2) Add polyethylene oxide (relative molecular mass 40kDa) into 180mL deionized water, heat at 60°C and stir for 4h to prepare a polyethylene oxide aqueous solution containing polyethylene oxide with a concentration of 10g / mL .
[0059] (3) Mix chitosan / poly-N-isopropylacrylamide interpenetrating network hydrogel with polyethylene oxide aqueous solution at a volume ratio of 3 / 1, stir at room temperature until uniform, and prepare ...
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