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Continuous preparation method of hydrogel optical fiber based on reactive spinning

A technology of optical fiber and hydrogel, which is applied in the direction of wet spinning, cladding optical fiber, fiber treatment, etc., to achieve the effect of controllable diameter

Active Publication Date: 2019-12-06
DONGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a continuous preparation method of hydrogel optical fiber based on reactive spinning, which overcomes the problem that the prior art template method limits the large-scale preparation of this kind of material. Compatible sodium alginate and polyethylene glycol diacrylate (PEGDA) monomers are respectively configured into the skin layer and the core layer spinning solution, and the horizontal coaxial needle is used as the spinning nozzle; the CaCl 2 The aqueous solution is a coagulation bath to solidify the sodium alginate in the skin layer, and an ultraviolet light source is added to initiate the free radical polymerization reaction of PEGDA in the core layer spinning solution; after drawing, a skin-core structure hydrogel optical fiber with good biocompatibility is finally obtained

Method used

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  • Continuous preparation method of hydrogel optical fiber based on reactive spinning
  • Continuous preparation method of hydrogel optical fiber based on reactive spinning
  • Continuous preparation method of hydrogel optical fiber based on reactive spinning

Examples

Experimental program
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Embodiment 1

[0030] Prepare 20g of sodium alginate (M w =400000) aqueous solution, and 20g mass fraction of 40wt.% containing CaCl 2 PEGDA aqueous solution (PEGDA M w =700 8g, add 0.04g IRGACURE2959, add CaCl 2 0.12 g), and magnetically stirred for 6 hours in the dark at room temperature to obtain a uniform spinning solution.

[0031] Use a propulsion pump to extrude the spinning solution through a coaxial needle (with an outer diameter of 1.469mm and an inner diameter of 0.557mm) into a calcium chloride water bath. The propulsion rate of the cortex is 4.4ml / h, and the propulsion rate of the core layer is 4.4mL / h (the extrusion rate ratio of the skin-core layer is 1.0). The horizontal spinning nozzle is immersed 2cm below the surface of the water bath. An ultraviolet point light source is set at a distance of 5mm from the spinneret, the wavelength is 400mm, and the included angle between the direction of the light path and the extrusion direction of the spinning solution is 30°. A r...

Embodiment 2

[0037] Prepare 20g of sodium alginate (M w =100000) aqueous solution, and 20g mass fraction of 20wt.% containing CaCl 2 PEGDA aqueous solution (adding PEGDA 4g, M w=250, add 0.02g IRGACURE2959, add CaCl 2 0.24g, the mass of deionized water is 16g), and magnetically stirred for 6h at room temperature in the dark to obtain a uniform spinning solution.

[0038] Use a propulsion pump to extrude the spinning solution through a coaxial needle (1.469mm in outer diameter and 0.557mm in inner diameter) into a calcium chloride water bath, the propulsion rate of the cortex is 2.0ml / h, and the propulsion rate of the core layer is 0.5mL / h (the extrusion rate ratio of the skin core layer is 4.0). The horizontal spinning nozzle is immersed 2cm below the surface of the water bath. An ultraviolet point light source is set at a distance of 5mm from the spinneret, the wavelength is 400mm, and the included angle between the direction of the light path and the extrusion direction of the spin...

Embodiment 3

[0040] Prepare sodium alginate (M w =4000) aqueous solution, and 20g mass fraction of 80wt.% containing CaCl 2 PEGDA aqueous solution (add PEGDA 16g, M w =5000, add 0.04g IRGACURE2959, add CaCl 2 0.12g, add 4g of deionized water), and magnetically stir for 6h at room temperature in the dark to obtain a uniform spinning solution.

[0041] Use a propulsion pump to extrude the spinning solution through a coaxial needle (with an outer diameter of 1.469mm and an inner diameter of 0.557mm) into a calcium chloride water bath. The propulsion rate of the cortex is 20ml / h, and the propulsion rate of the core layer is 10mL / h , the extrusion rate ratio of the skin-core layer is 2.0. The horizontal spinning nozzle is immersed 2cm below the surface of the water bath. Set an ultraviolet point light source at a distance of 5 mm from the spinneret, with a wavelength of 400 mm, and an included angle between the direction of the optical path and the extrusion direction of the spinning solut...

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Abstract

The invention relates to a continuous preparation method of a hydrogel optical fiber based on reactive spinning. The method comprises the following steps that a skin-layer spinning liquid and a core-layer spinning liquid are prepared respectively; a transverse coaxial needle is used as a spinning nozzle, a CaCl<2> aqueous solution is used as a coagulating bath to solidify sodium alginate of a skinlayer, and an ultraviolet light source is used for initiating a free radical polymerization reaction of PEGDA in the core-layer spinning liquid; drafting is conducted, and finally the skin-core structure hydrogel optical fiber with good biocompatibility is obtained. The prepared skin-core structure hydrogel optical fiber has the advantages of continuity, controllable diameters, excellent biocompatibility and excellent photoconductive properties.

Description

technical field [0001] The invention belongs to the field of preparation of hydrogel optical fibers, in particular to a continuous preparation method of hydrogel optical fibers based on reactive spinning. Background technique [0002] In recent years, the application of light in medical treatment has gradually emerged, and it has been widely used in photodynamic therapy, photothermal ablation, surgical treatment, and body fluid monitoring sensors. However, when light is applied to in vivo therapy and signal sensing, due to the poor penetration of light on physical tissue, it generally only penetrates 0.1-2 cm below the tissue matrix, which will greatly affect the therapeutic and sensing effects. Therefore, there is a need for a material capable of transmitting light from outside the body to the inside of the body with less light loss. [0003] Optical fiber is a material that relies on the principle of total reflection of light to conduct light, and has a wide range of appl...

Claims

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Application Information

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IPC IPC(8): D01F8/10D01F8/18D01D5/06D01D5/34D01F1/10G02B6/02
CPCD01D5/06D01D5/34D01F1/10D01F8/10D01F8/18
Inventor 朱美芳陈国印侯恺成艳华艾玉露危培玲姜耘蒙
Owner DONGHUA UNIV
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