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Preparation method of skin health monitoring bracelet with visual sunlight irradiation intensity

A technology for radiation intensity and health monitoring, which is applied to thermometers, bracelets, watch straps, etc. with physical/chemical changes. The effect of increasing the adsorption rate and shortening the preparation time

Active Publication Date: 2021-01-12
ZHEJIANG SCI-TECH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

But prepared g-C 3 N 4 The powder has the defects of being easy to agglomerate and difficult to recycle, which largely inhibits its own photocatalytic degradation efficiency

Method used

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  • Preparation method of skin health monitoring bracelet with visual sunlight irradiation intensity
  • Preparation method of skin health monitoring bracelet with visual sunlight irradiation intensity
  • Preparation method of skin health monitoring bracelet with visual sunlight irradiation intensity

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] In this example, a skin health monitoring wristband for visually indicating the intensity of sunlight irradiation is prepared by using a photocatalyst to degrade the dye. The working principle of the skin health monitoring wristband prepared by the present invention is to visually indicate whether the sunlight radiation received by human skin reaches the threshold through its own fading process under sunlight irradiation, so as to realize skin health monitoring. The fading process of the bracelet is specifically manifested in the load g-C 3 N 4 Photocatalytic degradation process of methylene blue dye by composite thermosensitive hydrogel. The photocatalytic degradation process of methylene blue dye by the composite thermosensitive hydrogel was further analyzed. The copolymerized temperature-sensitive monomer used for preparing the composite temperature-sensitive hydrogel is an acrylamide temperature-sensitive monomer (A) and an acrylate temperature-sensitive monomer (...

Embodiment 2

[0047] In this example, a visual skin health monitoring bracelet with different TTs can be prepared by changing the ratio of copolymerized temperature-sensitive monomers. The composite thermosensitive hydrogel in the bracelet has the characteristics of temperature response and high adsorption efficiency of dyes under TT. When the temperature reaches above TT, the temperature-sensitive polymer cross-linked network in the composite temperature-sensitive hydrogel forms intramolecular hydrogen bonds and shrinks, and the physical cross-linked network of calcium alginate acts as a curing function because it does not have temperature-sensitive properties, thus forming a porous structure. The formation of the porous structure provides a channel for the adsorption of the dye by the composite temperature-sensitive hydrogel, which improves the adsorption rate of the dye and effectively shortens the preparation time of the skin health monitoring bracelet.

[0048] The copolymerized tempe...

Embodiment 3

[0057] In this example, a visual skin health monitoring wristband with a variable initiation mode was prepared. The composite temperature-sensitive hydrogel that constitutes the wristband can be initiated by chemical reagents (APS and TEMED) and catalysts (g-C 3 N 4 ) photoinitiated. Photocatalyst (g-C 3 N 4 ) initiated composite thermosensitive hydrogel with g-C 3 N 4 The advantages of uniform dispersion, excellent pore structure and better mechanical strength. Therefore, the skin health monitoring bracelet prepared by vacuum-encapsulating the composite temperature-sensitive hydrogel obtained by photo-initiated polymerization has the advantage of being more sensitive to the intensity of sunlight irradiation, and is expected to become a useful device for protecting human skin under sunlight irradiation. Wearable materials with potential commercial value.

[0058] The copolymerized temperature-sensitive monomer used to prepare the composite temperature-sensitive hydrogel ...

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Abstract

The invention relates to the field of polymer composite materials, and discloses a preparation method of a skin health monitoring bracelet with visual sunlight irradiation intensity. The preparation method comprises the following steps: using composite temperature-sensitive hydrogel as a raw material, directly initiating free radical polymerization of the composite temperature-sensitive hydrogel by using an ultraviolet irradiation photocatalyst, adsorbing dyes, and carrying out vacuum packaging to obtain the bracelet. The principle is as follows: under sunlight irradiation, methylene blue dyeadsorbed is degraded by utilizing a photocatalyst uniformly loaded in the bracelet to realize color change of the bracelet, namely a fading process, so as to indicate whether a sunlight irradiation threshold value of human skin is reached or not. The skin health monitoring wristband has the advantages of being easy to prepare, sensitive in indication, low in cost and wearable. Therefore, the skinhealth monitoring bracelet disclosed by the invention can effectively prevent skin diseases such as erythema, sunburn and even skin cancer of human skin caused by excessive sunlight irradiation.

Description

technical field [0001] The invention relates to the field of polymer composite materials, in particular to a preparation method of a skin health monitoring wristband for visualizing the intensity of solar radiation. Background technique [0002] Sunlight is closely related to human daily life, industrial and agricultural production, and medicine, mainly in aspects such as sterilization, curing, and photocatalytic reactions. Appropriate ultraviolet light and low-band visible light radiation are beneficial to promote the synthesis of vitamin D in the human body, which helps to strengthen human bones and strengthen the human immune system. However, excessive ultraviolet light and low-band visible light radiation can also cause great harm to human skin. Excessive sunlight exposure outdoors will directly cause human skin erythema and damage to vision, and long-term exposure to excessive sunlight will further induce cell metabolism, leading to premature aging of the skin, eye les...

Claims

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Application Information

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IPC IPC(8): C08J3/075C08L33/24C08L5/04C08K5/46C08F220/54C08F220/28C08F222/38C08F2/48A44C5/00G01K11/16A61B5/00
CPCC08J3/075C08F220/54C08F220/286C08F2/48A44C5/0015G01K11/16A61B5/681A61B5/445A61B5/441C08J2333/24C08J2405/04C08K5/46C08F222/385
Inventor 钟齐胡能陈晨
Owner ZHEJIANG SCI-TECH UNIV
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