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Preparation method of polymer fluorescent colorful fibre

A polymer and colorful technology, applied in the field of fluorescent fiber preparation, can solve the problems of difficult dispersion of CdSe quantum dots and electrospinning, and achieve the effects of easy control of reaction conditions, cost reduction and high spinning efficiency

Inactive Publication Date: 2012-06-27
HEILONGJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The present invention solves the technical problem that CdSe quantum dots are difficult to disperse in polymers for electrospinning; and provides a method for preparing polymer fluorescent colorful fibers

Method used

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  • Preparation method of polymer fluorescent colorful fibre
  • Preparation method of polymer fluorescent colorful fibre

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specific Embodiment approach 1

[0007] Specific embodiment one: the preparation method of polymer fluorescent colorful fiber is carried out according to the following steps in the present embodiment: one, 150mL dehydrated alcohol and 40mL oleic acid are mixed, add 50mLNaOH aqueous solution and 50mLCd(CH 3 COO) 2 2H 2 O aqueous solution, wherein, add 50mL Na again 2 SeSO 3 Solution, put it for 3-5min to get the reaction solution, then prepare 5 parts of the reaction solution according to the above operation, transfer to different reaction kettles for 0.5h, 1.5h, 2h, 4h and 12h respectively, and react in a closed reaction kettle at a temperature of 40~ Carry out at 150°C to obtain a CdSe quantum dot mixture containing different emission peak positions, mix the above-mentioned CdSe quantum dot mixture to obtain a quantum dot mixture A; 2. Use ethanol precipitation step 1 to obtain a quantum dot mixture A, and then use toluene Extract and take the upper layer; 3. Add polystyrene (PS) to the upper layer, the m...

specific Embodiment approach 2

[0009] Embodiment 2: This embodiment is different from Embodiment 1 in that: the reaction temperature in Step 1 is 80-100°C. Other steps and parameters are the same as in the first embodiment.

specific Embodiment approach 3

[0010] Embodiment 3: The difference between this embodiment and Embodiment 1 or 2 is that the ultrasonic frequency required for ultrasonic dispersion in step 3 is 80 Hz. Other steps and parameters are the same as those in Embodiment 1 or Embodiment 2.

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Abstract

The invention relates to a preparation method of a polymer fluorescent colorful fibre, belonging to the preparation field of fluorescent fibres and aiming to solve the technical problem that CdSe quantum dots are difficult to disperse into polymers for electrostatic spinning. The method provided by the invention comprises the following steps of: firstly, preparing CdSe quantum dots with differentemitting light peak positions, and then mixing; secondly, depositing with ethanol and extracting with toluene; thirdly, preparing a polymer spinning solution; and fourthly, spinning the polymer spinning solution obtained in the third step into a fibre through a spinning process to obtain the polymer fluorescent colorful fibre. The fibre prepared by the invention can present red, orange, yellow, green and cyan lights under an ultraviolet light with the wavelength of 365 nm. The method has the advantages of simple process, economy, high spinning efficiency and easiness in controlling reaction conditions. The polymer fluorescent colorful fibre is applied to the aspects such as fluorescent anti-counterfeiting brands, paper and fluorescent decoration, fluorescent ink and clothes products.

Description

technical field [0001] The invention belongs to the field of preparation of fluorescent fibers. Cadmium selenide (CdSe) has good optical characteristics and stability, and has broad application prospects in the fields of light-emitting devices, optical biomarkers, etc. The present invention achieves the present invention by dispersing and coating polystyrene (PS) fibers with toluene Colorful fibers corresponding to the fluorescent properties of quantum dots. Background technique. [0002] With the advancement of science and technology, new fluorescent fibers continue to emerge, which have a wide range of applications in many fields such as... application. Quantum dots have a significant size effect due to the wonderful rules of quantum mechanics. Basically, light above a certain threshold can be absorbed, and an organic dye molecule can only rise from the ground state to a higher excitation after absorbing a photon of appropriate energy. state, the light used must be a pr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D01F6/56D01F1/10
Inventor 孙立国滕婧汪成栾羽佳
Owner HEILONGJIANG UNIV