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Heat and moisture responsive fiber with light-to-heat conversion and antibacterial properties and preparation method thereof

A light-to-heat conversion and performance technology, applied in the chemical characteristics of fibers, rayon manufacturing, textiles and papermaking, etc., can solve problems such as discrimination, improve adhesion, reduce spinning difficulty, and make it easier to form.

Active Publication Date: 2022-02-18
WUHAN TEXTILE UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the response of this method to photothermal and humidity stimuli is to use the evaporation or adsorption of water molecules, resulting in shrinkage or expansion of the volume to generate twisting rotational motion, so it is impossible to distinguish the stimulus as Photothermal stimulation or humidity stimulation

Method used

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  • Heat and moisture responsive fiber with light-to-heat conversion and antibacterial properties and preparation method thereof
  • Heat and moisture responsive fiber with light-to-heat conversion and antibacterial properties and preparation method thereof
  • Heat and moisture responsive fiber with light-to-heat conversion and antibacterial properties and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] A heat-humidity responsive fiber with light-to-heat conversion and antibacterial properties, which is obtained by spinning a hydrophilic spinning component and a hydrophobic spinning component through a side-by-side spinning component, and the hydrophobic spinning component is made of polyethylene terephthalate Composed of ethylene glycol formate and far-infrared ceramic powder, the hydrophilic spinning component is composed of a copolymer of terephthalic acid, ethylene glycol, polyethylene glycol and 1,2-butanediol and nano silver, Its preparation method comprises the following steps:

[0037] S1. Preparation of spinning components: melt-blending the copolymer of nano-silver and terephthalic acid, ethylene glycol, polyethylene glycol and 1,2-butanediol in a twin-screw extruder to obtain the Hydrophilic spinning component, melt-blending far-infrared ceramic powder and polyethylene terephthalate in a twin-screw extruder to obtain the hydrophobic spinning component;

[0...

Embodiment 2～8

[0047] Compared with Example 1, the heat and moisture responsive fibers provided in Examples 2 to 6 with light-to-heat conversion and antibacterial properties are different in that the diameter of the heat and moisture responsive fibers and the hydrophilic spinning components and hydrophobic spinning components The diameter ratio of the points is shown in Table 1, and the others are basically the same as those in Embodiment 1, and will not be repeated here.

[0048] Table 1 The preparation conditions of Examples 2 to 6 and the bending angle test results to light heat and humidity stimulation

[0049]

[0050]

[0051] It can be seen from Table 1 that as the diameter of the fiber increases, the amount of deformation produced by it when it is stimulated by the outside gradually decreases. This is because the larger the diameter of the fiber, the smaller the degree of orientation of the fiber, and the more scattered the distribution of internal molecular chains. , the great...

Embodiment 7～14

[0053] The heat-humidity responsive fibers with light-to-heat conversion and antibacterial properties provided in Examples 7-14 are different from those in Example 1 in that the types and amounts of antibacterial agents and powders with light-to-heat conversion functions are shown in Table 2 As shown, the others are basically the same as those in Embodiment 1, and will not be repeated here.

[0054] Table 2 The preparation conditions of Examples 7-14 and the bending angle test results to light heat and humidity stimulation

[0055]

[0056]

[0057] It can be seen from Table 2 that when the light-to-heat conversion powder such as zirconium carbide or magnesium carbide is selected, the bending deformation of the heat-humidity responsive fiber in response to light-heat and humidity stimuli is not much different, indicating that changing the type of light-to-heat conversion powder Heat and humidity response fiber properties have little effect. With the increase of the amou...

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Abstract

The invention provides a heat-humidity responsive fiber with light-to-heat conversion and antibacterial properties and a preparation method thereof. Parallel composite fibers with a diameter ratio of hydrophilic antibacterial fibers and hydrophobic light-to-heat conversion fibers of 2.5:1 to 1:2.5 are obtained by spinning in parallel spinning components, the hydrophilic antibacterial fibers are composed of hydrophilic polymers and antibacterial agents, The hydrophobic light-to-heat conversion fiber is composed of hydrophobic polymer and powder with light-to-heat conversion performance. The hydrophilic polymer is obtained by hydrophilic modification of the hydrophobic polymer, or the hydrophobic polymer is obtained by hydrophobic modification of the hydrophilic polymer, so that the side-by-side fibers are easier to form and the spinning difficulty is reduced . The present invention utilizes the difference in the amount of deformation produced by the hydrophilic antibacterial fiber and the hydrophobic light-to-heat conversion fiber to light-heat stimulation and humidity stimulation to produce bending deformation in different directions, thereby realizing a distinguishable response to light-heat and humidity.

Description

technical field [0001] The invention belongs to the technical field of functional textile materials, and in particular relates to a heat-humidity responsive fiber with light-to-heat conversion and antibacterial properties and a preparation method thereof. Background technique [0002] With the continuous development and application of functional materials, traditional fibers can no longer meet the needs of the public, and the market demand is more towards the direction of functionalization and intelligence, such as stimuli-responsive driving materials. Stimulus-responsive driving materials refer to materials that produce movement behavior or changes in movement state when subjected to changes in external environmental conditions (such as: light, heat, electricity, magnetism, humidity, etc.). With the continuous deepening of the research on smart materials, stimulus-responsive materials have developed from the initial static responsiveness to the current dynamic responsivenes...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D01F8/14D01F8/10D01F1/10
CPCD01F8/14D01F8/10D01F1/103D01F1/10
Inventor 王栋梅涛赵青华宋银红尤海宁陈佳慧毛秦岑吴建美蒋海青
Owner WUHAN TEXTILE UNIV
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