Spinning method of gel fibers

A gel fiber and spinning technology, which is applied in the field of spinning methods of gel fibers, can solve the problems of limiting the applicable system of fibrous gel, reducing water content, poor mechanical strength of gel fibers, etc., and achieving increased robustness. and application range, reducing friction, broadening the effect of compatibility

Active Publication Date: 2020-11-10
BEIJING INSTITUTE OF TECHNOLOGYGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This makes the existing hydrogel spinning method unable to effectively combine the functional groups required for the application, thus limiting the applicable system that can produce fibrous gels
[0004] In addition, due to the inherent high water content of gel fibers, gel fibers often have poor mechanical strength and cannot achieve the strength required for automated processing
At the same time, reducing the water content makes the gel fibers brittle and unsuitable for the automated processing required for mass production

Method used

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  • Spinning method of gel fibers
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  • Spinning method of gel fibers

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050] (1) 7.088g poly(2-acrylamido-2-methylpropanesulfonic acid) solution, 0.414g polyethylene glycol diacrylate (Mn=600), 1.500g acrylamide and 0.0450g 2-hydroxy- 2-Methyl-1-[4-(2-hydroxyethoxy)phenyl]-1-acetone was mixed in a 20mL glass bottle, and vigorously magnetically stirred for 30min to completely dissolve the raw materials, and then defoamed under ultrasound for 10min. to obtain a precursor solution;

[0051] (2) First put the precursor solution into a 10mL syringe and fix it in the syringe pump 1, then turn on the syringe pump 1, adjust the flow rate to 40 μL / min, and inject the precursor solution into a polytetrafluoroethylene having a diameter of 0.86mm and a length of 30cm In the ethylene tube 2, after the precursor solution reaches the nozzle of the PTFE tube 2, turn off the syringe pump 1, turn on the first UV lamp 3, and after irradiating for 200s, turn on the syringe pump 1 again and turn on the second UV lamp 5, and wait for extrusion. After the stabilizati...

Embodiment 2

[0058] (1) 7.017g poly(N,N,N-trimethyl-2-[(2-methyl-2-acryloyl)oxy]ethylammonium chloride solution, 0.414g polyethylene glycol diacrylate ( Mn=600), 1.500 g acrylamide and 0.0450 g 2-hydroxy-2-methyl-1-[4-(2-hydroxyethoxy)phenyl]-1-propanone were mixed in a 20 mL glass bottle and vigorously Magnetic stirring for 30min made the raw material completely dissolved, and then ultrasonically defoamed for 10min to obtain the precursor solution;

[0059] (2) First put the precursor solution into a 10mL syringe and fix it in the syringe pump 1, then turn on the syringe pump 1, adjust the flow rate to 40 μL / min, and inject the precursor solution into a polytetrafluoroethylene having a diameter of 0.86mm and a length of 30cm In the ethylene tube 2, after the precursor solution reaches the nozzle of the PTFE tube 2, turn off the syringe pump 1, turn on the first UV lamp 3, and after irradiating for 200s, turn on the syringe pump 1 again and turn on the second UV lamp 5, and wait for extrus...

Embodiment 3

[0065] (1) 7.088g poly(2-acrylamido-2-methylpropanesulfonic acid) solution, 0.414g polyethylene glycol diacrylate (Mn=600), 1.500g acrylamide and 0.0450g 2-hydroxy- 2-Methyl-1-[4-(2-hydroxyethoxy)phenyl]-1-acetone was mixed in a 20mL glass bottle, and vigorously magnetically stirred for 30min to completely dissolve the raw materials, and then defoamed under ultrasound for 10min. to obtain a precursor solution;

[0066] (2) First, the precursor solution was loaded into a 10 mL syringe and fixed in the syringe pump 1, then the syringe pump 1 was turned on, the flow rate was adjusted to 220 μL / min, and the precursor solution was injected into a polytetrafluoroethylene having a diameter of 2.5 mm and a length of 30 cm. In the ethylene tube 2, after the precursor solution reaches the nozzle of the PTFE tube 2, turn off the syringe pump 1, turn on the first UV lamp 3, and after irradiating for 250s, turn on the syringe pump 1 again and turn on the second UV lamp 5, and wait for extr...

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Abstract

The invention relates to a spinning method of gel fibers, and belongs to the technical field of high polymer materials. The method comprises the following steps of preparing a precursor solution fromlinear macromolecules, acrylamide, polyethylene glycol diacrylate, 2-Hydroxy-1-(4-(2-hydroxyethoxy)phenyl)-2-methylpropan-1-one and water, filling the precursor solution into an injection pump, injecting the precursor solution into a polytetrafluoroethylene tube through the injection pump, and performing primary ultraviolet irradiation polymerization in the polytetrafluoroethylene tube and secondary ultraviolet irradiation polymerization at an outlet of the polytetrafluoroethylene tube to obtain the gel fiber. According to the spinning method, the gel fibers are easily separated from the spinning tube wall by utilizing the lubricating layer formed by the linear polymer in the centers of the gel fibers and the spinning tube wall, besides, the friction force between the gel fibers and the spinning tube wall is reduced, and the stable spinning is promoted. Due to entanglement between linear macromolecules and a gel network, low-speed polymerization becomes possible, the compatibility of integratable functional groups is widened, and the method is high in operability, simple in equipment and easy to realize large-scale production.

Description

technical field [0001] The invention relates to a spinning method of gel fibers, which belongs to the technical field of polymer materials. Background technique [0002] With the development of polymer technology, gel materials have been widely used in medicine, sensing, biochemical detection, soft robotics and other fields due to their easy functionalization and good biocompatibility. Among gel materials of various dimensions, gel fibers have excellent mechanical flexibility and fast material exchange ability due to their small cross-section and large surface area, and have attracted extensive attention in the fields of wearable sensors, optical detection, biocompatible fabrics, etc. . [0003] There are currently only limited methods available for the continuous production of gel fibers, such as electrospinning, melt spinning, microfluidic spinning, extrusion spinning, and direct ink writing. However, in order to achieve continuous spinning in the above-mentioned methods...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01D5/00D01D1/10D01D13/00D01F8/10C08F283/06C08F220/56C08F2/48
CPCD01D5/00D01D1/103D01D13/00D01F8/10C08F283/065C08F220/56C08F2/48
Inventor 赵扬段翔宇于静怡曲良体
Owner BEIJING INSTITUTE OF TECHNOLOGYGY
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