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A supercritical co 2 Fluid technology makes cellulose fibers have the processing method of repelling insects

A cellulose fiber and fluid technology technology, which is applied in the field of processing based on supercritical CO2 fluid technology to make cellulose fibers have insect repellent function, can solve the problems of complex finishing process, relatively low content of functional contents and single function, etc. Achieving good hand feel, good sustained release effect, and the effect of increasing the effective volume

Active Publication Date: 2021-04-23
SUZHOU UNIV +3
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The existing development of cosmetic textiles generally adopts chemical finishing methods including coating co-extrusion method, composite finishing method, complexation method, etc. (Handbook of Medical Textiles, 2011, 153), these methods all involve chemical reactions and can There are few types of functional substances that can be reliably applied (mainly limited to processing such as hydrophilization), and the finishing process is relatively complicated, with a single function, which cannot form a long-lasting and controllable slow-release effect
Relatively speaking, the microcapsule technology can control the release, and can prepare many types of functional drugs, but it needs to wrap the functional drugs in the encapsulation material, which involves various physical and chemical reactions. material and particle size are required ("Knitting Industry", 2017 (09): 5-7), and the composition of the capsule is mainly composed of wall thickness, the relative content of functional content is very small, and the capsule is bonded by resin On fiber products, it will affect the feel of textiles

Method used

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  • A supercritical co <sub>2</sub> Fluid technology makes cellulose fibers have the processing method of repelling insects
  • A supercritical co <sub>2</sub> Fluid technology makes cellulose fibers have the processing method of repelling insects
  • A supercritical co <sub>2</sub> Fluid technology makes cellulose fibers have the processing method of repelling insects

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Example 1: Supercritical CO 2 Preparation of Fluid-loaded Anthelmintic Drug Menthiol to Viscose Fiber

[0034] First, after the viscose fabric is washed with ethanol and deionized water, it is dried and weighed for 24 hours, and mendiol is weighed according to 8% of the viscose fabric weight and put into the medicine tank of the high-pressure equipment, and the viscose fabric weight 0.16 is added. % ethanol, and then into the viscose fabric. Cool the CO 2 The gas CO flowing out of the cylinder 2 Cool to liquid.

[0035] The pressure of the high-pressure equipment is first set to 13Mpa, the temperature is 75°C, and the carbon dioxide becomes a supercritical fluid. After impregnation and equilibrium for 20 minutes, the pressure rises to 28MPa at a speed of 0.6MPa / min; Descend until the end of the experiment to obtain the viscose fiber loaded with the anthelmintic drug mentediol. The drug loading of viscose fiber is 6.3%.

[0036] In order to analyze the slow-release...

Embodiment 2

[0039] Example 2: Supercritical CO 2 Fluid-loaded method of anthelmintic drug octopamine to cotton fiber

[0040] Weigh an appropriate amount of cotton fiber, and soak it in an aqueous solution of N-methylmorpholine-N-oxide (NMMO) with a mass fraction of 75% for 65 minutes at a bath ratio of 1:25, at a water bath temperature of 85°C. After the end, take out the cotton fiber .

[0041] After the cotton fiber is washed with ethanol and deionized water, it is dried and balanced for 24 hours and weighed. Take octopamine according to 7.5% of the cotton fiber weight, prepare 55% ethanol solution with water, and then prepare 0.08mol / L AOT / ethanol solution. Put into a clean container to prepare microemulsion.

[0042] Put the prepared microemulsion into the medicine tank of the high-pressure equipment, and then put in the cotton fiber. Use a cooling tank to cool the gaseous carbon dioxide flowing out of the carbon dioxide cylinder into a liquid. The pressure of the high-pressure eq...

Embodiment 3

[0048] Example 3: Supercritical CO 2 Method for fluid loading of anthelmintic drug mentediol to hemp fiber

[0049] Weigh an appropriate amount of hemp fiber, wash it, dry it and weigh it, add it to the reactor, and then add water of corresponding quality. The ratio range of hemp to water is 1:4.5. 2 SO 3 / K 2 S 2 o 8 , the dosage is 3.5%. Add 2-acrylamino-2-methylpropanesulfonic acid (AMPS) monomer after reacting for 35min, the ratio range of its to hemp fiber is 1.8:1, the reaction time is 3H, the temperature is 60°C, after cooling, filtering and washing with water , acetone, ether, and drying to obtain hemp fiber / AMPS graft copolymer.

[0050] After the copolymer is washed with ethanol and deionized water, dry and balance for 24 hours and weigh, take mentediol by weighing 8% of the copolymer weight and put it into the medicine tank of the high-pressure equipment, and add 0.16% ethanol of the copolymer weight, Then add the copolymer. Cool the CO 2 The gas CO flowing...

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Abstract

The present invention relates to a kind of based on supercritical CO 2 A processing method for making cellulose fibers have an insect repellent function by fluid technology, which includes: 1) pre-swelling or pre-treating cellulose fibers; 2 Solubility in fluid, for insoluble supercritical CO 2 The hydrophilic anthelmintic drugs are indirectly dissolved in supercritical CO by the method of supercritical microemulsion / reverse micelles. 2 Middle; 3) Add the anthelmintic drug into the drug tank of the high-pressure equipment, remove the air, and introduce CO 2 , at 32-120°C, raise the pressure inside the vessel to 8-30MPa to obtain supercritical CO 2 fluid, whereby the cellulose fibers are soaked in supercritical CO 2 Middle; 4) Anthelmintic drugs dissolved in supercritical CO 2 into pre-swelled cellulose fibers, and drug-loaded supercritical CO 2 There is constant relative movement between the fluid and the cellulose fiber, and the anthelmintic drug stays in the amorphous area inside the cellulose fiber after the pressure is released, forming a drug-loaded cellulose fiber capable of slow release.

Description

technical field [0001] The present invention relates to a processing method based on supercritical fluid technology to make cellulose fibers functional, more particularly to a method based on supercritical CO 2 Fluid technology is a processing method for making cellulose fibers have the function of repelling insects. Background technique [0002] In recent years, with the continuous improvement of people's quality of life, people's demand for clothing has become more and more diversified, for example, from the initial cold-proof and warm-keeping to the later beauty and fashion. Increase. Existing functional clothing mainly focuses on waterproof, UV-proof, breathable, antistatic, moisture-absorbing and quick-drying, quick-perspiration, sun-proof, mosquito-proof and other functions. Combining with textiles to develop special cosmetic textiles, such as textiles with moisturizing, cooling, antibacterial, anti-inflammatory, slimming, insect repellent and other functions, used i...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D06M13/148D06M13/144D06M23/10D06M13/355D06M13/328D06M14/04D06M101/06
CPCD06M13/144D06M13/148D06M13/328D06M13/355D06M14/04D06M23/105D06M2101/06
Inventor 朱维维龙家杰肖红施楣梧
Owner SUZHOU UNIV
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