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Electrostatic spinning fluorescent PVA nanofiber membrane and preparation method thereof

A nanofiber film and electrospinning technology, applied in the direction of textiles, papermaking, non-woven fabrics, etc., to achieve excellent fluorescent properties, good compatibility, and broad application prospects

Active Publication Date: 2015-03-25
深圳市双源包装材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there is no report on adding up-conversion nanoparticles to the spinning solution to prepare fluorescent fibers.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] 0.78mmol of Y (CF 3 COO) 3 , 0.2mmol of Yb (CF 3 COO) 3 , 0.02mmol of Er(CF 3 COO) 3 , 10mmol sodium fluoride (NaF) and 20ml organic solvent (10ml oleic acid OA + 10ml carbadecene ODE) were added to a 50mL three-necked flask and heated to 120°C, continuously fed with nitrogen protection and heated for 1h, then Then slowly heat up to 320°C and magnetically stir for 1 hour, cool down to room temperature naturally, add absolute ethanol, centrifuge to obtain a precipitate, then repeatedly wash with water and ethanol, and finally obtain an upconverter that can be dissolved in various organic solvents such as cyclohexane nanoparticles (UCNPs).

[0027] Mix 1g / L of 5mL up-converting luminescent nanoparticles hexane dispersion solution with 0.6g / L of 5mL nitrosonium tetrafluoroborate NOBF 4 The dichloromethane solution was mixed at room temperature, and the mixture was shaken gently until the UCNPs precipitated, then centrifuged, the supernatant was removed, and then redi...

Embodiment 2

[0030] 0.69mmol of Y (CF 3 COO) 3 , 0.3mmol of Yb (CF 3 COO) 3 , 0.01mmol of Er(CF 3 COO) 3 , 10mmol sodium fluoride (NaF) and 20ml organic solvent (10ml oleic acid OA + 10ml carbadecene ODE) were added to a 50mL three-necked flask and heated to 120°C, continuously fed with nitrogen protection and heated for 1h, then Then slowly heat up to 320°C and magnetically stir for 1 hour, cool down to room temperature naturally, add absolute ethanol, centrifuge to obtain a precipitate, then repeatedly wash with water and ethanol, and finally obtain an upconverter that can be dissolved in various organic solvents such as cyclohexane nanoparticles (UCNPs).

[0031] Mix 2g / L of 5mL up-converting luminescent nanoparticles hexane dispersion solution with 0.3g / L of 5mL nitrosonium tetrafluoroborate NOBF 4 The dichloromethane solution was mixed at room temperature, and the mixture was shaken gently until the UCNPs precipitated, then centrifuged, the supernatant was removed, and then redi...

Embodiment 3

[0034] 0.78mmol of Y (CF 3 COO) 3 , 0.2mmol of Yb (CF 3 COO) 3 , 0.02mmol of Tm (CF 3 COO) 3 , 10mmol sodium fluoride (NaF) and 20ml organic solvent (10ml oleic acid OA + 10ml carbadecene ODE) were added to a 50mL three-necked flask and heated to 120°C, continuously fed with nitrogen protection and heated for 1h, then Then slowly heat up to 320°C and magnetically stir for 1 hour, cool down to room temperature naturally, add absolute ethanol, centrifuge to obtain a precipitate, then repeatedly wash with water and ethanol, and finally obtain an upconverter that can be dissolved in various organic solvents such as cyclohexane nanoparticles (UCNPs).

[0035] Mix 2g / L of 5mL up-converting luminescent nanoparticles hexane dispersion solution with 0.6g / L of 5mL nitrosonium tetrafluoroborate NOBF 4 The dichloromethane solution was mixed at room temperature, and the mixture was shaken gently until the UCNPs precipitated, then centrifuged, the supernatant was removed, and then red...

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Abstract

The invention discloses an electrostatic spinning fluorescent PVA nanofiber membrane and a preparation method of the electrostatic spinning fluorescent PVA nanofiber membrane. The preparation method includes the steps that a high-temperature thermal decomposition method is adopted to synthesize hexagonal-phase up-conversion luminescence nano-particles (UCNPs), nitrosonium tetrafluoroborate (NOBF4) is used for treating the UCNPs to substitute oleic acid molecules on the surface of the UCNPs, finally the substitution product reacts with a hydrophilic hyperbranched polymer to obtain water-soluble up-conversion nano-particles, the water-soluble up-conversion nano-particles are added to a polyvinyl alcohol (PVA) spinning solution and ultrasonically and evenly mixed with the PVA spinning solution, and the electrostatic spinning fluorescent PVA nanofiber membrane is obtained through an electrostatic spinning method. The adopted water-soluble up-conversion nano-particles are excellent in fluorescence property and good in water solubility and compatibility with a PVA water solution and have wide application prospects in the fluorescent falsification-preventing field.

Description

technical field [0001] The invention relates to an electrospinning fluorescent PVA nanofiber film and a preparation method thereof, belonging to the fields of polymers and textiles. Background technique [0002] Fluorescent fibers can be divided into infrared fluorescent fibers and ultraviolet fluorescent fibers. Infrared fluorescent fiber refers to a fiber that can emit a variety of different colors under the excitation of infrared light. Ultraviolet fluorescent fiber refers to the fiber that shimmers under the excitation of ultraviolet light and can emit various colors. When the ultraviolet light disappears, it can return to the original color of the fiber. Fluorescent fibers are mainly used in anti-counterfeiting. If fluorescent fibers are added to paper, various anti-counterfeiting papers can be made. Under visible light, the fibers in the paper are invisible, but under special light, the fibers will show different colors to play an anti-counterfeiting role. At presen...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D04H1/413D04H1/4309D04H1/728
CPCD04H1/413D04H1/4309D04H1/728D10B2401/20
Inventor 赵兵
Owner 深圳市双源包装材料有限公司
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