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Preparation method of antibacterial shape memory fiber

A memory fiber, memory technology, applied in wet spinning, chemical post-treatment of synthetic polymer rayon, single-component polyurethane rayon, etc., can solve the problem of low yield, uneven spinning, and long spinning time and other problems, to achieve the effect of good shape memory function, broad-spectrum antibacterial activity, and good cytocompatibility

Active Publication Date: 2019-02-01
SICHUAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The spinning process is relatively complicated, and the spinning time is long, the spinning is uneven, and the yield is small, which is not conducive to large-scale industrial production

Method used

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  • Preparation method of antibacterial shape memory fiber
  • Preparation method of antibacterial shape memory fiber
  • Preparation method of antibacterial shape memory fiber

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] This embodiment provides an antibacterial shape memory fiber, which is formed by compounding shape memory polyurethane and antibacterial agent polyhexamethylene biguanide hydrochloride through spinning technology, and has both shape memory performance and antibacterial function. The detailed preparation process is as follows: dissolve shape memory polyurethane in dimethylacetamide, stir at 80°C for 6h to obtain a homogeneous solution with a mass fraction of 25wt%; configure the antibacterial agent polyhexamethylene biguanide hydrochloride into The aqueous solution with a mass fraction of 10wt% is used as a coagulation bath for wet spinning, and the spinning parameters are set as follows: the inner diameter of the spinneret is 0.51mm, and the draw ratio of the spinneret is -10%; The fibers were dried at room temperature for 24 hours.

[0023] Antibacterial performance test, mechanical strength performance test, shape memory performance test and cytocompatibility test are...

Embodiment 2

[0027] This embodiment provides an antibacterial shape memory fiber, which is formed by compounding shape memory polyurethane and antibacterial agent 1-chloro-2,2,6,6-tetramethyl-4-piperidinol through spinning technology, Both shape memory performance and antibacterial function. The detailed preparation process is as follows: dissolve shape memory polyurethane in dimethylacetamide, stir at 80°C for 6h to obtain a homogeneous solution with a mass fraction of 35wt%; -Tetramethyl-4-piperidinol is configured into an aqueous solution with a mass fraction of 20 wt%, and uses it as a coagulation bath for wet spinning. The spinning parameters are set as follows: the inner diameter of the spinneret is 0.51 mm, The draw ratio is -10%; after spinning, the fibers are collected and dried at room temperature for 24 hours.

[0028] Antibacterial performance test, mechanical strength performance test, shape memory performance test and cytocompatibility test are carried out to the fiber that ...

Embodiment 3

[0030] This embodiment provides an antibacterial shape memory fiber, which is formed by compounding shape memory polyurethane and antibacterial carbolic acid through spinning technology, and has both shape memory performance and antibacterial function. The detailed preparation process is as follows: Dissolve shape memory polyurethane in dimethylacetamide, stir at 80°C for 6h to obtain a homogeneous solution with a mass fraction of 30wt%; prepare the antibacterial agent carbolic acid into an aqueous solution with a mass fraction of 35wt% (65 DEG C of heating and dissolving), use it as coagulation bath, carry out wet spinning, and spinning parameter is set as: spinneret inner diameter is 0.51mm, spinneret drawing ratio is-10%; Collect fiber after spinning finishes It was dried at room temperature for 24 hours.

[0031] Antibacterial performance test, mechanical strength performance test, shape memory performance test and cytocompatibility test are carried out to the fiber that p...

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Abstract

The invention provides a method for preparing antibacterial shape memory fiber. The fiber is formed by compounding shape memory polyurethane and an organic antibacterial agent by a spinning technique,and has both shape memory performance and antibacterial function. The preparation method comprises the following steps: dissolving the shape memory polyurethane in dimethylacetamide to obtain 25-35 wt% of a homogeneous solution; making the organic antibacterial agent into 10-40 wt% of an aqueous solution as coagulating bath and carrying out wet spinning; and collecting and drying the fiber afterthe spinning. By using the shape memory polyurethane as a spinning material and the aqueous solution of the organic antibacterial agent as the coagulation bath and through a wet spinning technique, the antibacterial shape memory fiber is obtained by a one-step method. The antibacterial fiber has good cell compatibility, broad-spectrum antibacterial activity, good mechanical strength and good shapememory function.

Description

technical field [0001] The invention relates to a novel fiber preparation technology, in particular to a preparation method of an antibacterial shape memory fiber. Background technique [0002] Antibacterial fiber refers to the fiber that introduces substances that inhibit bacterial growth into the surface and interior of the fiber by physical or chemical methods. It is divided into two types: natural antibacterial fiber and synthetic antibacterial fiber. Natural antibacterial fiber refers to the natural fiber itself has antibacterial function, such as chitosan fiber, hemp fiber and bamboo fiber. Synthetic antibacterial fibers are obtained by adding antibacterial substances in various ways on the basis of chemical fibers. In the processing and production of antibacterial fibers and fabrics, choosing safe and environmentally friendly antibacterial agents and processing methods to achieve the best antibacterial performance is the key direction of future research. At present,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01F6/70D01F11/08D01D5/06
CPCD01D5/06D01F6/70D01F11/08
Inventor 谭淋文雅施亦东银学谦
Owner SICHUAN UNIV
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