Preparation method of fluorescent nanofiber film based on acrylic based emulsion

Abstract

The invention discloses a preparation method of fluorescent nanofiber film based on acrylic based emulsion, which specifically comprises: mixing rhodamine B and acrylic monomer by a mass ratio of 1:100-1:1000 under the action of emulgator, and preparing the fluorescent acrylic acid composite latex by an emulsion polymerization method; dissolving the polyvinyl alcohol with molecular weight of 70000-150000 in the deionized water to prepare a polyvinyl alcohol aqueous solution with concentration of 5-10wt%, mixing the polyvinyl alcohol aqueous solution with the fluorescent acrylic emulsion in proportion, and obtaining a fluorescent nanofiber film through an electrostatic spinning process at fixed temperature and humidity; the method promotes the dispersion of the fluorescent small molecules,inhibits the aggregation induction quenching effect of the fluorescent molecules under a solid state, improves the fluorescence intensity of the fluorescent small molecules, enables the prepared fiberfilm to emit strong fluorescence, does not use any organic solvent in the spinning process and has no harm to the environment.

Description

technical field [0001] The invention relates to a method for preparing fluorescent fibers, in particular to a method for preparing fluorescent nanofiber films based on acrylic latex. Background technique [0002] Electrospinning is a new processing technology that can be used to prepare ultrafine fibers. The prepared nanofibers have a higher specific surface area (1,000 times that of ordinary micron fibers), a higher aspect ratio (length-to-diameter ratio), Radius of curvature and strong interpenetration with other substances. Therefore, nanofiber fabric or fiber mat has strong adsorption capacity and good flexibility, filterability, adsorption, adhesion, barrier and heat preservation. However, in the preparation process of the spinning dope, a large amount of organic solvents are needed to dissolve the polymer or melt at a higher temperature. Even in the process of using emulsion spinning, some organic solvents will be added to it to promote The entanglement of polymers w...

AI Technical Summary

Problems solved by technology

However, in the preparation process of the spinning dope, a large amount of organic solvents are needed to dissolve the polymer or melt at a higher temperature. Even in the process of using emulsion spinning, some organic solvents will be added to it to promote The entanglement of polymers will pollute the environment, and there are fewer raw materials for spinning by simply using aqueous solution, which cannot meet the growing practical needs

[0003] Because rhodamine B dyes are rigid planar molecules with a large π-conjugated system, they have high fluorescence quantum yields in dilute solutions, but their fluorescence will be si

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