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Preparation method of hybrid cross-linked transparent ionic conductive organic hydrogel fibers

A hydrogel fiber, hybrid cross-linking technology, applied in the direction of fiber type, fiber treatment, fiber chemical characteristics, etc., can solve the problems of easy evaporation, difficult continuous manufacturing of hydrogel fiber, freezing moisture, etc., to improve the resistance Effects of low temperature performance, improved anti-evaporation performance, and enhanced stability

Active Publication Date: 2020-04-24
DONGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, continuous fabrication of hydrogel fibers remains a challenge
In addition, hydrogels also have the problems of freezing at low temperatures and easy evaporation of water.

Method used

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  • Preparation method of hybrid cross-linked transparent ionic conductive organic hydrogel fibers
  • Preparation method of hybrid cross-linked transparent ionic conductive organic hydrogel fibers
  • Preparation method of hybrid cross-linked transparent ionic conductive organic hydrogel fibers

Examples

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Embodiment 1

[0043] 1. Preparation of hybrid cross-linked transparent ion-conducting organic hydrogel fibers

[0044] (1) 0.2g of sodium alginate powder was dissolved in 8mL of deionized water, and magnetically stirred overnight to fully dissolve. Then add 2g of polyethylene glycol diacrylate (PEGDA) powder, 150mg of photoinitiator I2959 (2-hydroxyl-4'-(2-hydroxyethoxy)-2-methylpropiophenone), avoid light and dissolve with magnetic stirring After completion, 1 g of hydroxyethyl acrylate (HEA) was added, and magnetically stirred in the dark for 30 minutes to obtain a light yellow transparent homogeneous PEGDA hydrogel spinning stock solution for use.

[0045] (2) The spinning stock solution is packed into a 10ml syringe, and spun into a coagulation bath (0.05MCaCl) through a stainless steel needle (19G). 2aqueous solution). Ultraviolet light (UPP0404A, Uvata (Shanghai) Precision Optpelectronics Co., Ltd. = 365 nm) was applied above the coagulation bath to initiate cross-linking polymeriza...

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Abstract

The invention relates to a preparation method of hybrid cross-linked transparent ionic conductive organic hydrogel fibers. The method comprises the following steps of extruding a mixed solution of sodium alginate and polyethylene glycol diacrylate (PEGDA) into a coagulation bath in which divalent (or trivalent) metal salt is dissolved, placing an ultraviolet light source above the coagulation bath, and initiating covalent cross-linking of the PEGDA; and finally, performing solvent replacement to obtain the organic hydrogel fibers. The prepared organic hydrogel fibers have the excellent freezing resistance, stability, transparency and stretchability, and have the great application potential in the fields of wearable anisotropic sensors, data gloves, flexible electrodes, optical fibers and the like.

Description

technical field [0001] The invention belongs to the field of flexible and wearable electronic devices, and in particular relates to a preparation method of a hybrid cross-linked transparent ion-conductive organic hydrogel fiber. Background technique [0002] In the field of flexible wearable electronics, fibrous devices can be woven together with clothing, but bulk materials are not conducive to the integration with clothing, so it is necessary to develop flexible and stretchable conductive fibers. Most of the existing conductive fibers are based on electronically conductive materials. The conductive fibers prepared by using traditional conductive materials such as carbon materials doped in the fibers or coated on the surface of the fibers are usually opaque and relatively stretchable. Poor and the electrical conductivity will be significantly reduced during stretching. In addition, these elastic fibers are mostly based on thermoplastic elasticity, so they have obvious hyste...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01F8/10D01F8/18D06M11/13D06M11/155D06M101/26
CPCD01F8/10D01F8/18D06M11/13D06M11/155D06M2101/26
Inventor 游正伟宋建春
Owner DONGHUA UNIV
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