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A kind of high tensile hydrogel conductive optical fiber, its preparation method and application

A hydrogel fiber and hydrogel technology, applied in cladding optical fiber, optical waveguide light guide, optics, etc., can solve the problems of high cost, stretchability and low dissipation

Active Publication Date: 2022-07-15
UNIV OF SCI & TECH OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In recent years, some flexible hydrogel optical fibers with stretchability and low dissipation have been developed for the biomedical field, most of which are hydrogel fibers based on calcium alginate / acrylamide (AAm) core-sheath structure. , the preparation method of using tubular mold molding, this complicated process is difficult for the continuous preparation of large-sized optical fibers, and the cost is too high
Moreover, existing hydrogel-based optical fibers are still difficult to combine optical, electrical, mechanical properties and stability to meet application requirements.

Method used

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  • A kind of high tensile hydrogel conductive optical fiber, its preparation method and application
  • A kind of high tensile hydrogel conductive optical fiber, its preparation method and application
  • A kind of high tensile hydrogel conductive optical fiber, its preparation method and application

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preparation example Construction

[0049] The present invention also provides a method for preparing a highly stretched hydrogel conductive optical fiber, comprising the following steps:

[0050] A) heating and dissolving anionic polyacrylamide in a mixed solvent of water and an organic solvent, and after cooling, stretching and spinning to obtain anionic polyacrylamide hydrogel fibers;

[0051] B) immersing the anionic polyacrylamide hydrogel fiber in an inorganic salt solution to perform ion doping;

[0052] C) The ion-doped fiber is immersed in a polyacrylate compound solution for coating to obtain a high-stretch hydrogel conductive fiber.

[0053] In the invention, the anionic polyacrylamide is heated and dissolved in a mixed solvent composed of water and an organic solvent to obtain a uniform and translucent polymer solution, which is cooled at room temperature for use.

[0054] In the present invention, the organic solvent is preferably one or more of dimethyl sulfoxide, methanol, ethanol, acetone, N,N-d...

Embodiment 1

[0072] This example is used to illustrate the preparation method of MAPAM hydrogel conductive fiber

[0073] Take 0.3g of anionic polyacrylamide (PAM) granular solid (Mw~2.2×10 7 Da), dissolved in a mixed solvent of 5g water / DMSO, the solvent contains 3g water and 2g DMSO, heated and stirred at 90°C for 1h, so that PAM was dissolved in the mixed solvent of water and DMSO, and a uniform and translucent spinning solution was obtained.

[0074] The obtained PAM solution was cooled to room temperature, then the PAM fibers were directly drawn from the solution, the ends of the fibers were fixed, and the fibers were allowed to stand for a certain period of time (1-2 minutes) in the air, resulting in a PAM gel with a diameter of 200 ± 50 μm fiber.

[0075] Then the synthetic fibers were soaked in 0.1M calcium chloride solution, 0.1M sodium sulfate solution and 0.5M lithium chloride solution for the same time (30 seconds) to form an ionically cross-linked network in the PAM gel fiber...

Embodiment 2

[0079] This example is used to illustrate the preparation method of MAPAM hydrogel conductive fiber material

[0080] Take 0.25g of anionic polyacrylamide (PAM) granular solid (Mw~2.2×10 7 Da), dissolved in a mixed solvent of 5g water / DMSO containing 2.85g water and 2.15g DMSO, heated and stirred at 90 °C for 1 h, so that PAM was dissolved in the mixed solvent of water and DMSO to obtain uniform and translucent spinning solution.

[0081] The obtained PAM solution was cooled to room temperature, then the PAM fibers were directly drawn from the solution, the ends of the fibers were fixed, and the fibers were allowed to stand for a certain period of time (1-2 minutes) in the air, resulting in a PAM gel with a diameter of 200 ± 50 μm fiber.

[0082] Then the synthetic fibers were soaked in 0.1M calcium chloride solution, 0.1M sodium sulfate solution and 0.5M lithium chloride solution for the same time (30 seconds) to form an ionically cross-linked network in the PAM gel fibers ...

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Abstract

The invention provides a high-stretch hydrogel conductive optical fiber, comprising a polyacrylamide inner core and a polyacrylate coating layer; the polyacrylamide inner core is an anionic polyacrylamide hydrogel fiber doped with metal ions ; Described metal ion is Na + , K + , Li + , Ca + , Mg 2+ , Fe 3+ and Zn 2+ one or more of them. The present invention incorporates ions into the polymer chains of polyacrylamide fibers to form cross-links, thereby enhancing mechanical properties, while providing ionic conductivity, and utilizing the high degree of hydration of ions to reduce water evaporation and freezing points of hydrogels. PMA is chosen as the cladding of the fiber, which not only maintains the water content of the fiber for a long time without being affected by the external environment, but also confines the light to the total reflection in the core for conduction. The invention also provides a preparation method and application of a high-stretch hydrogel conductive optical fiber.

Description

technical field [0001] The invention belongs to the technical field of biomedicine, and in particular relates to a high-stretch hydrogel conductive optical fiber, a preparation method and application thereof. Background technique [0002] Hydrogels are three-dimensionally cross-linked porous polymers with unique properties such as good mechanical strength, flexibility, and biocompatibility. Conductive hydrogels have additional conductivity, which combines high conductivity and softness, making them one of the ideal interface materials for perfect compatibility between human body and bioelectronic devices. [0003] Currently, conductive polymer hydrogels can be divided into two categories, conductive polymer hydrogels and ionically conductive hydrogels. One is to introduce conductive components such as conductive polymers or nanomaterials into the hydrogel based on electron transport. However, most conductive materials have high cost and the conductive components are very ea...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D06M15/263G02B1/00G02B1/04G02B6/02A61B18/22D06M101/34
CPCD06M15/263G02B1/048G02B1/046G02B1/00G02B6/02A61B18/22D06M2101/34A61B2018/2222
Inventor 马明明霍子昱
Owner UNIV OF SCI & TECH OF CHINA