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A kind of thermosensitive antibacterial tussah silk fiber and preparation method thereof

A technology of tussah silk and fiber is applied in the field of temperature-sensitive antibacterial tussah silk fiber and its preparation, and can solve the problems of single function, poor washing fastness, low grafting rate and the like

Active Publication Date: 2021-09-24
EASTERN LIAONING UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, when the silk fiber is modified, usually only a single function can be obtained, and the grafting rate of the modification process is low, and the washing fastness is poor

Method used

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  • A kind of thermosensitive antibacterial tussah silk fiber and preparation method thereof
  • A kind of thermosensitive antibacterial tussah silk fiber and preparation method thereof
  • A kind of thermosensitive antibacterial tussah silk fiber and preparation method thereof

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preparation example Construction

[0028] The invention provides a kind of preparation method of thermosensitive antibacterial tussah silk fiber, comprises the following steps:

[0029] (1) swelling tussah silk fibers in an ionic liquid solution to obtain swelling fibers;

[0030] (2) Mixing the swollen fiber and the dithiothreitol solution for a reduction reaction to obtain a reduced fiber; the reduced fiber has an active mercapto group;

[0031] (3) Under the action of the initiating system, the reduced fiber and N-isopropylacrylamide are grafted in a PBS solution, the antibacterial peptide solution is added during the reaction, and then cross-linked and encapsulated using transglutaminase , to obtain temperature-sensitive antibacterial tussah silk fiber; the initiation system is horseradish peroxidase-hydrogen peroxide-ascorbic acid system.

[0032] The invention swells the tussah silk fiber in the ion liquid solution to obtain the swollen fiber. The present invention has no special requirements on the fin...

Embodiment 1

[0060] (1) Swell tussah silk fibers with 5% 1-ethyl-3-methylimidazole acetate solution at 50°C for 3 hours to obtain swollen fibers, wash with distilled water, remove surface reagents, and set aside .

[0061] (2) Immerse the swollen fiber in 10 mmol / L dithiothreitol solution, adjust the pH to 6.5-7.5 with sodium carbonate solution, and treat it with magnetic stirring at 30°C for 4 hours. After the reaction, take out the obtained reduced fiber and wash it with distilled water ,stand-by.

[0062] (3) Dissolve 0.565g of N-isopropylacrylamide in 30ml of PBS solution (0.1mol / L, pH=7.0). After all the solids are dissolved, add 0.302g of reduced fiber, blow in nitrogen, and soak tussah silkworms at room temperature Silk fiber for 1 hour, then add 0.531g of 30% hydrogen peroxide solution, then add 0.531g of ascorbic acid, add 0.033g of horseradish peroxidase after 30 minutes of stabilization, heat in a water bath at 40°C for 2 hours, then add 2% concentration of bovine antimicrobial...

Embodiment 2

[0064] (1) Use 1-ethyl-3-methylimidazole acetate solution with a mass concentration of 10% to swell tussah silk fibers at 50°C for 3 hours to obtain swollen fibers, wash with distilled water, remove surface reagents, and set aside .

[0065] (2) Immerse the swollen fibers in 15 mmol / L dithiothreitol solution, adjust the pH to 6.5-7.5 with sodium carbonate solution, and magnetically stir at 30°C for 3 hours. After the reaction, take out the obtained reduced fibers and wash them with distilled water ,stand-by.

[0066] (3) Dissolve 0.678g of N-isopropylacrylamide in 30ml of PBS solution (0.1mol / L, pH=7.0). After all the solids are dissolved, add 0.418g of reduced fiber, blow in nitrogen, and soak tussah silkworms at room temperature Silk fiber for 1 hour, then add 0.637g of 30% hydrogen peroxide solution, then add 0.637g of ascorbic acid, add 0.0369g of horseradish peroxidase after 30 minutes of stabilization, heat in a water bath at 40°C for 2 hours, then add 2% concentration ...

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Abstract

The invention provides a temperature-sensitive antibacterial tussah silk fiber and a preparation method thereof, belonging to the field of modified silk fibers. In the present invention, after the tussah silk fiber is swollen in the ionic liquid solution, it is mixed with the dithiothreitol solution to carry out the reduction reaction to obtain the reduced fiber; The reduced fiber and N-isopropylacrylamide were grafted in PBS solution, and antibacterial peptide solution was added during the reaction, and then transglutaminase was used for cross-linking and encapsulation to obtain temperature-sensitive antibacterial tussah silk fiber. The method provided by the invention modifies the structural characteristics of the tussah silk fiber, has a high grafting rate, and the obtained tussah silk fiber has dual functions of temperature sensitivity and antibacterial, and has excellent washing fastness.

Description

technical field [0001] The invention relates to the technical field of modified silk fibers, in particular to a temperature-sensitive antibacterial tussah silk fiber and a preparation method thereof. Background technique [0002] At present, the main feature that silk fabrics are loved by people is the comfort of wearing. Silk is composed of protein fibers, has good biocompatibility with the human body, and has the lowest friction coefficient for human stimulation among all types of fibers. First of all, silk has moisture absorption and release properties. Under normal heat, it can maintain a certain amount of moisture in the skin layer, without making the skin too dry, and making people feel cool. It is because of this function that it is more suitable for direct contact with human skin, so that we can Use it as clothing; secondly, silk is heat-resistant, sound-absorbing, and dust-proof, so it can adjust the temperature, and it can also absorb harmful gases and dust in the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D06M14/06D06M13/352D06M13/252D06M101/10
CPCD06M13/252D06M13/352D06M14/06D06M16/00D06M2101/10
Inventor 路艳华王勃翔程德红李佳卢声
Owner EASTERN LIAONING UNIV
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