A preparation method of pegma/pegda hydrogel fiber with ultrafast anisotropic water absorption

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: 2017-06-30
DONGHUA UNIV
View PDF6 Cites 1 Cited by
  • 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

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A preparation method of pegma/pegda hydrogel fiber with ultrafast anisotropic water absorption
  • A preparation method of pegma/pegda hydrogel fiber with ultrafast anisotropic water absorption
  • A preparation method of pegma/pegda hydrogel fiber with ultrafast anisotropic water absorption

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Weigh 3g of PEGMA monomer and 0.15g of photoinitiator IRGACURE 2959 at room temperature, 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 4g of deionized water, 3g 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 speed of the roller w...

Embodiment 2

[0036]Weigh 1g of PEGMA monomer and 0.05g of photoinitiator IRGACURE 2959 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 to remove Ionized water, 7g PEGDA (Mw=300), 0.35g IRGACURE2959, and magnetically stirred at room temperature for 6h 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 diam...

Embodiment 3

[0038] Weigh 7g of PEGMA monomer and 0.35g of photoinitiator IRGACURE 2959 at room temperature, ultrasonically disperse, and stir in the dark until the photoinitiator is completely dissolved, and polymerize PEGMA with a UV light source with a wavelength of 400nm to prepare long-chain PEGMA; weigh 1g to remove Ionized water, 2g PEGDA (Mw=300), 0.10g IRGACURE2959, and magnetically stirred at room temperature for 6h 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...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

PropertyMeasurementUnit
diameteraaaaaaaaaa
Login to view more

Abstract

The present invention relates to a preparation method of PEGMA / PEGDA hydrogel fiber with ultra-fast anisotropic water absorption, comprising: preparing PEGMA through polymerization reaction at room temperature; preparing polymer aqueous solution with PEGMA and PEGDA, adding a photoinitiator, Ultrasonic dispersion, stirring, until the photoinitiator is completely dissolved, to obtain PEGMA / PEGDA spinning solution; at room temperature, pass the obtained spinning solution into the water bath through the spinning nozzle through the metering pump, and set the ultraviolet light source to trigger the spinning solution Free radical polymerization reaction of PEGDA in medium to obtain PEGMA / PEGDA nascent hydrogel fibers; stretching the obtained nascent hydrogel fibers to obtain. The hydrogel fiber prepared by the method of the invention has stable structure and good water absorption performance, and has very important significance for the 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

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Patents(China)
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
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap