Ultra-thin ultra-dryness nanometer fiber mask paper and preparation method
A nanofiber membrane, nanofiber technology, applied in the direction of fiber type, fiber treatment, natural fiber, etc., can solve the problems of low preservative content, high preservative content, incompatibility of non-water-soluble functional ingredients, etc., to improve stability, Good layered skin care or beauty effect
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[0042] 2. Preparation of nanofiber membrane: use ultra-high voltage and multi-nozzles to electrospin the electrospinning liquid, control the humidity of the electrospinning environment to 20%-80%, the spinning distance to 30mm-600mm, and the spinning voltage to be 30kV-80kV, obtain single-layer or multi-layer nanofiber membrane. Preferably specifically: the preparation of a single-layer nanofiber membrane: the electrospinning solution C and the electrospinning solution A (or B) are prepared by using an ultra-high voltage, multi-nozzle electrospinning device to prepare a single-layer nanofiber membrane, and receive The surface is collected simultaneously and spun by different nozzles to obtain a single functional layer blended membrane (functional substances loaded in the skeleton or gel matrix) including the nanofiber insoluble skeleton and the nanofiber gel matrix, and the humidity of the spinning environment is controlled to be 20 %-80%, the spinning distance is 30mm-600mm, ...
Embodiment 1
[0047] This embodiment provides a single-layer nanofiber membrane paper with moisturizing function, which is prepared by the following method:
[0048] 1) Preparation of polymer carrier solution: polylactic acid was dissolved in hexafluoroisopropanol at room temperature to obtain electrospinning solution A with a mass concentration of 15%.
[0049] 2) Preparation of moisturizing functional gel matrix solution: put polyvinyl alcohol with a degree of polymerization of 500 and a degree of alcoholysis of less than 90% into deionized water, stir at room temperature for 0.5 hours to fully dissolve the sample, and heat to above 60°C Stir for 1 hour to obtain a polyvinyl alcohol aqueous solution with a mass fraction of 9%; the chitosan with a carboxylation degree of 80% and a relative molecular weight greater than 500KDa is dissolved in a 0.2mol / L aqueous acetic acid solution under heating and stirring at 60°C to obtain Chitosan acetic acid aqueous solution with a mass fraction of 12%...
Embodiment 2
[0054] This embodiment provides a multilayer nanofiber film paper with moisturizing and whitening functions, which is prepared by the following method:
[0055] 1) Preparation of polymer carrier solution: polylactic acid was dissolved in hexafluoroisopropanol at room temperature to obtain electrospinning solution A with a mass concentration of 15%.
[0056] 2) Preparation of gel matrix solution: put polyvinyl alcohol with a degree of polymerization of 500 and a degree of alcoholysis of less than 90% into deionized water, stir at room temperature for 0.5 hours to fully dissolve the sample, heat to above 60°C and stir for 1 hour , make the polyvinyl alcohol aqueous solution of mass fraction 9%; Be that the carboxylation degree is 80%, the chitosan of relative molecular weight greater than 500KDa is dissolved in the acetic acid aqueous solution of 0.2mol / L under 60 ℃ heating and stirring, obtains mass fraction as 12% chitosan acetic acid aqueous solution; then chitosan acetic aci...
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