Chitosan/carbon nanometer tube static spinning membrane preparation method
A carbon nanotube and electrospinning technology, which is applied in rayon manufacturing, textile and paper making, filament/thread forming, etc., can solve the problems of preparation and performance of electrospun fiber fabric materials without electrostatic shielding and antibacterial functions, and achieve Good electromagnetic shielding performance, good solubility and film-forming properties, and excellent antibacterial performance
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Embodiment 1
[0013] 1) Acidification of CNTs: Add 6.0g of multi-walled CNTs to 200ml of HNO3 / H2SO4 (3:1) mixed acid to prepare a 0.03g / mL solution, heat it to boiling state and reflux for 70min, and filter it with a filter membrane 1. Wash with deionized water until weakly acidic, and dry in vacuum at 70°C for 48h.
[0014] 2) Chitosan solution preparation: Dissolve chitosan with a certain molecular weight of 100,000 in glacial acetic acid solution (mass concentration is 2%) at room temperature, prepare a solution that is 4% by volume and mass fraction, and stir magnetically for 2 hours , to obtain a transparent light yellow chitosan glacial acetic acid solution.
[0015] 3) electrostatic assembly of chitosan / carbon nanotubes: the carbon nanotubes obtained in step 1) are dissolved in deionized water, and ultrasonically dispersed to obtain a carbon nanotube solution with a concentration of 6.0 mg / mL; the carbon nanotube solution and step 2 ) The chitosan solution obtained was mixed accordi...
Embodiment 2
[0018] 1) Acidification of CNTs: Add 6.0g of multi-walled CNTs to 200ml of HNO3 / H2SO4 (3:1) mixed acid to prepare a 0.03g / mL solution, heat it to boiling state and reflux for 70min, and filter it with a filter membrane 1. Wash with deionized water until weakly acidic, and dry in vacuum at 70°C for 48h.
[0019] 2) Preparation of chitosan solution: Dissolve chitosan with a certain molecular weight of 200,000 in glacial acetic acid solution (mass concentration is 2%) at room temperature, prepare a solution that is 5% by volume and mass fraction, and stir magnetically for 2 hours , to obtain a transparent light yellow chitosan glacial acetic acid solution.
[0020] 3) electrostatic assembly of chitosan / carbon nanotubes: the carbon nanotubes obtained in step 1) are dissolved in deionized water, and ultrasonically dispersed to obtain a carbon nanotube solution with a concentration of 6.0 mg / mL; the carbon nanotube solution and step 2 ) The chitosan solution obtained was mixed acco...
Embodiment 3
[0023] 1) Acidification of CNTs: Add 6.0g of multi-walled CNTs to 200ml of HNO3 / H2SO4 (3:1) mixed acid to prepare a 0.03g / mL solution, heat it to boiling state and reflux for 70min, and filter it with a filter membrane 1. Wash with deionized water until weakly acidic, and dry in vacuum at 70°C for 48h.
[0024] 2) Chitosan solution preparation: Dissolve chitosan with a certain molecular weight of 200,000 in glacial acetic acid solution (mass concentration is 2%) at room temperature, prepare a solution that is 6% by volume and mass fraction, and stir magnetically for 2 hours , to obtain a transparent light yellow chitosan glacial acetic acid solution.
[0025] 3) chitosan / carbon nanotube electrostatic assembly: the carbon nanotube obtained in step 1) is dissolved in deionized water, and ultrasonically dispersed to obtain a carbon nanotube solution with a concentration of 8.0 mg / mL; the carbon nanotube solution is mixed with step 2 ) The chitosan solution obtained was mixed acc...
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