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Preparation method of PEGMA/PEGDA hydrogel fiber having ultrafast-anisotropically water-absorption performance

An anisotropic, water-absorbing technology, applied in fiber processing, fiber chemical characteristics, spinning solution preparation, etc., can solve the unrealized continuous and controllable preparation of chemically cross-linked hydrogel fibers and limit the application of hydrogel materials and other problems, to achieve the effect of stable fiber structure and good water absorption performance

Active Publication Date: 2015-12-09
DONGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In addition, due to the limitations of the crosslinked structure, chemically crosslinked hydrogels can usually only be used to prepare bulk materials with three-dimensional structures through in-situ polymerization. This single-dimensional structure limits the application of hydrogel materials.
At present, the foreign Adams research team has prepared fibrous polyethylene glycol diacrylate PEGDA gel materials through dynamic polymerization in microfluidics, but has not achieved continuous and controllable preparation of chemically cross-linked hydrogel fibers.

Method used

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  • Preparation method of PEGMA/PEGDA hydrogel fiber having ultrafast-anisotropically water-absorption performance
  • Preparation method of PEGMA/PEGDA hydrogel fiber having ultrafast-anisotropically water-absorption performance
  • Preparation method of PEGMA/PEGDA hydrogel fiber having ultrafast-anisotropically water-absorption performance

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Weigh 3g of PEGMA monomer and 0.15g of photoinitiator IRGACURE2959 at room temperature, and stir in the dark until the photoinitiator is completely dissolved, and then polymerize PEGMA with an ultraviolet light source with a wavelength of 400nm to prepare long-chain PEGMA; weigh 4g of deionized water, 3g of PEGDA ( Mw=300), 0.03g IRGACURE2959, ultrasonic dispersion, magnetic stirring at room temperature in the dark for 6h until IRGACURE2959 is completely dissolved to obtain spinning solution. A capillary with an inner diameter of 0.6 mm and a length of 2 cm is used as a spinning nozzle, and a propulsion pump is used to pass the spinning solution into a deionized water bath at a propulsion rate of 2 ml / h, and the spinning nozzle is immersed in the water bath 0.5 cm below the liquid surface. Set a 90° ultraviolet point light source at a distance of 8 mm from the spinneret, with a wavelength of 400 mm, and a spot distance of 5 mm from the spinning solution. The linear spee...

Embodiment 2

[0036]Weigh 1g of PEGMA monomer and 0.05g of photoinitiator IRGACURE2959 at room temperature, ultrasonically disperse, and stir in the dark until the photoinitiator is completely dissolved, then polymerize PEGMA with a UV light source with a wavelength of 400nm to prepare long-chain PEGMA; weigh 2g of deionized water , 7g PEGDA (Mw=300), 0.35g IRGACURE2959, and magnetically stirred for 6h at room temperature in the dark until IRGACURE2959 was completely dissolved to obtain a spinning solution. Using a capillary with an inner diameter of 1.0 mm and a length of 2 cm as the spinning nozzle, the spinning solution is passed into the coagulation bath by a propulsion pump at a propulsion rate of 10 ml / h, and the spinning nozzle is immersed 2 cm below the water bath surface. Set a 90° ultraviolet point light source at a distance of 5 mm from the spinneret, with a wavelength of 325 mm, and a spot distance of 8 mm from the spinning solution. The linear speed of the drum with a diameter ...

Embodiment 3

[0038] Weigh 7g of PEGMA monomer and 0.35g of photoinitiator IRGACURE2959 at room temperature, ultrasonically disperse, and stir in the dark until the photoinitiator is completely dissolved, then polymerize PEGMA with a UV light source with a wavelength of 400nm to prepare long-chain PEGMA; weigh 1g of deionized water , 2g PEGDA (Mw=300), 0.10g IRGACURE2959, and magnetically stirred for 6h at room temperature in the dark until IRGACURE2959 was completely dissolved to obtain a spinning solution. A capillary with an inner diameter of 0.8 mm and a length of 2 cm is used as a spinning nozzle, and a propulsion pump is used to pass the spinning liquid into the coagulation bath at a propulsion rate of 2 ml / h, and the spinning nozzle is immersed 1 cm below the surface of the water bath. Set an 80° ultraviolet point light source at a distance of 6 mm from the spinneret, with a wavelength of 295 mm, and a spot distance of 5 mm from the spinning solution. The line speed of the roller wit...

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Abstract

The invention relates to a preparation method of PEGMA / PEGDA hydrogel fibers having an ultrafast-anisotropically water-absorption performance. The preparation method comprises following steps: 1) preparing PEGMA through a polymerization reaction at room temperature; 2) preparing a polymer water solution from the PEGMA and the PEGDA, adding a photo-initiator, performing ultrasound dispersion, stirring the mixture until the photo-initiator is dissolved completely to obtain a PEDMA / PEGDA spinning solution; 3) at room temperature, feeding the spinning solution into a water bath through a spinning spray head by a metering pump, setting an ultraviolet point light source to enable a free radical polymerization reaction of the PEDGA in the spinning solution for preparing primary PEGMA / PEGDA hydrogel fibers; and 4) drafting the primary PEGMA / PEGDA hydrogel fibers to obtain the PEGMA / PEGDA hydrogel fibers. The PEGMA / PEGDA hydrogel fibers are stable in structure and good in water absorption performance. The preparation method has very important significance on development, application and post-processing of hydrogel materials.

Description

technical field [0001] The invention belongs to the field of preparation of hydrogel fibers, in particular to a preparation method of PEGMA / PEGDA hydrogel fibers with super fast anisotropic water absorption performance. Background technique [0002] Hydrogel is a kind of soft and wet material with three-dimensional network structure composed of organic polymers and water. According to the different cross-linking methods, hydrogel can be divided into chemical cross-linking structure and physical cross-linking structure. Among them, chemically crosslinked hydrogels have strong structural stability due to the restriction of molecular chain movement by crosslinking points, but the swelling response rate lags behind that of physically crosslinked hydrogels. Therefore, on the basis of maintaining the stability of the chemically crosslinked structure, it is of great significance to improve the swelling response rate of chemically crosslinked hydrogels by controlling the crosslinkin...

Claims

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Application Information

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IPC IPC(8): D01F6/28C08F283/06C08F222/20D01D1/02D01D5/06D01D10/00
Inventor 朱美芳侯恺成艳华杨升元
Owner DONGHUA UNIV
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