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A nanocomposite hydrogel optical fiber with high light guide and high moisture retention and preparation method thereof

A nano-composite, hydrogel technology, applied in the chemical characteristics of fibers, single-component synthetic polymer rayon, textiles and papermaking, etc., can solve the problems of weak mechanical strength, easy dehydration, and complex processing methods for hydrogel fibers. , to achieve the effect of reducing volatility and freezing temperature, improving moisture retention, and easy industrialization

Active Publication Date: 2021-06-11
DONGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved by the present invention is to provide a nano-composite hydrogel optical fiber with high light guide and high moisture retention and its preparation method, which overcomes the problems of complicated processing methods, weak mechanical strength and easy dehydration of the hydrogel optical fiber in the prior art. The present invention adopts the method that polymerization-stretching is carried out synchronously to prepare

Method used

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  • A nanocomposite hydrogel optical fiber with high light guide and high moisture retention and preparation method thereof
  • A nanocomposite hydrogel optical fiber with high light guide and high moisture retention and preparation method thereof
  • A nanocomposite hydrogel optical fiber with high light guide and high moisture retention and preparation method thereof

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Experimental program
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Effect test

Embodiment 1

[0041]Weigh 8 g of deionized water, 2 g of glycerin, 1.4 g of Laponite, 0.03 g of potassium persulfate, 0.6 g of oligoethylene glycol methyl ether methacrylate (Mn=500) and 1.4 g of acrylamide monomer at room temperature Stir at room temperature for 5 h until the potassium persulfate is completely dissolved to obtain a gel prepolymer. Add 40 μL accelerator N,N,N,N-tetramethylethylenediamine to the gel prepolymerization solution, and quickly transfer the prepolymerization solution to a 2mm inner diameter, 30cm long polytetrafluoroethylene tube within 1 minute . After reacting for 5 minutes, extrude the nascent hydrogel fiber through a 40mL needle tube, and at the same time collect it by winding at a distance of 50cm from the PTFE nozzle. The linear speed of the winding drum is 12m / min. About 250 μm nanocomposite hydrogel optical fiber, the prepared nanocomposite hydrogel optical fiber has a refractive index measured by a refractometer due to its internal compact structure, whi...

Embodiment 2

[0049] Weigh 6 g of deionized water, 4 g of glycerin, 1 g of Laponite, 0.04 g of ammonium persulfate, 1 g of oligoethylene glycol methyl ether methacrylate (Mn=300) and 1 g of acrylamide monomer at room temperature and stir 6h until the potassium persulfate is completely dissolved to obtain a gel prepolymer solution. Add 60 μL accelerator N,N,N,N-tetramethylethylenediamine to the gel prepolymerization solution, and quickly transfer the prepolymerization solution to a 3mm inner diameter, 20cm long polytetrafluoroethylene tube within 30 seconds . After reacting for 3 minutes, extrude the nascent hydrogel fiber through a 40mL needle tube, and at the same time collect it by winding at a distance of 20cm from the PTFE nozzle. The linear speed of the winding drum is 8m / min. About 300 μm nanocomposite hydrogel optical fiber, the refractive index of the prepared nanocomposite hydrogel optical fiber measured by a refractometer is 1.59, which is much higher than that of the nanocomposi...

Embodiment 3

[0051] Weigh 3g of deionized water, 2g of glycerin, 0.25g of silicon dioxide, 0.03g of potassium persulfate, 0.4g of OEGMA (Mn=2000) and 0.6g of acrylamide monomer at room temperature and stir for 5 hours until potassium persulfate is completely dissolved to obtain Gel prepolymer. Add 30 μL accelerator N, N-dimethylaniline to the gel pre-polymerization solution, and quickly transfer the pre-polymerization solution to a 1 mm inner diameter, 25 cm long polytetrafluoroethylene tube within 1 minute. After reacting for 12 minutes, extrude the nascent hydrogel fiber through a 20mL needle tube, and at the same time collect it by winding at a distance of 10cm from the PTFE nozzle. The linear speed of the winding drum is 6m / min. About 100 μm nanocomposite hydrogel optical fiber, the refractive index of the prepared nanocomposite hydrogel optical fiber measured by a refractometer is 1.74, which is much higher than that of the nanocomposite hydrogel with the same composition (refractive ...

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Abstract

The invention relates to a nano-composite hydrogel optical fiber with high light guide and high moisture retention and a preparation method thereof, comprising: the raw material component system is obtained by in-situ polymerization and synchronous stretching. The obtained material has good light guiding performance, flexibility and multiple environmental adaptability. The present invention not only significantly improves various performances of the hydrogel optical fiber, but also has easy-to-obtain raw materials for preparation, simple process, great potential for industrial production, and is expected to be applied to biosensor devices in various environments.

Description

technical field [0001] The invention belongs to the field of preparation of functional composite hydrogel optical fiber, in particular to a nano composite hydrogel optical fiber with high light guide and high moisture retention and a preparation method thereof. Background technique [0002] Fiber optic sensors have inherent safety, low electromagnetic interference, and high dielectric strength, which can effectively avoid the influence of external electromagnetic signal interference. However, traditional optical fiber materials are limited to hard glass or plastic. Although they have good light transmission ability, they are not suitable for flexible and complex human body deformation, thus limiting their application in the field of new wearable devices. [0003] Hydrogel is a colloidal material made of hydrophilic polymers cross-linked in water, soft and tough, and has good deformability. It is processed into an optical fiber material that can withstand large elongation, b...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D01F6/28C08F283/06C08F220/56C08F220/28C08F2/44C08K3/34C08K3/36G01N33/48
CPCC08F2/44C08F220/56C08F283/065C08K3/346C08K3/36C08K2201/011D01F6/28G01N33/48
Inventor 朱美芳陈涛危培玲陈国印侯恺
Owner DONGHUA UNIV