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A supercritical co 2 Fluid technology makes cellulose fiber have slimming function processing method

A technology of cellulose fiber and fluid technology, which is applied in the processing field based on supercritical CO2 fluid technology to make cellulose fiber have a slimming function. Good hand feeling, good sustained-release effect, and effect of increasing 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 fiber have slimming function processing method
  • A supercritical co <sub>2</sub> Fluid technology makes cellulose fiber have slimming function processing method
  • A supercritical co <sub>2</sub> Fluid technology makes cellulose fiber have slimming function processing method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Example 1: Supercritical CO 2 Method of Fluid Loading the Slimming Drug Theophylline to Tencel Fiber

[0035] First, wash the Tencel fabric with ethanol and deionized water, dry and balance for 24 hours, weigh theophylline according to 9% of the weight of the Tencel fabric, prepare a 45% ethanol solution with water, and then prepare a 0.06 mol / L AOT / Ethanol solution, put into a clean container to prepare microemulsion.

[0036] Put the prepared microemulsion into the medicine tank of the high-pressure equipment, and then put it into the Tencel fabric. 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 equipment is set at 25Mpa, the temperature is 75°C, and the carbon dioxide becomes a supercritical fluid. After 2.0 hours of impregnation equilibrium, the experiment is over, and the Tencel loaded with theophylline is obtained. fiber. The drug loading of Tencel fiber is 7.8%....

Embodiment 2

[0040] Example 2: Supercritical CO 2 Method of Fluid Loading Slimming Drug Nuciferine to Hemp Fiber

[0041] Weigh an appropriate amount of hemp fiber, soak it in an aqueous solution of N-methylmorpholine-N-oxide (NMMO) with a mass fraction of 65% for 75 minutes at a bath ratio of 1:25, and take out the hemp fiber at a water bath temperature of 85°C. .

[0042] After the hemp fiber is washed with ethanol and deionized water, it is dried and weighed for 24 hours, and the nuciferine is weighed according to 8.5% of the weight of the hemp fiber and put into the medicine tank of the high-pressure equipment, and then put into the hemp 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 equipment is set to 28Mpa, the temperature is 65°C, and the carbon dioxide becomes a supercritical fluid. After 50 minutes of impregnation and balance, the experiment ends, and hemp fibers loaded with...

Embodiment 3

[0046] Example 3: Supercritical CO 2 Method of Fluid Loading the Slimming Drug Theophylline Acetate to Viscose Fiber

[0047] First wash the viscose fabric with ethanol and deionized water, dry and balance for 24 hours and weigh, take theophylline acetic acid by weighing 11.5% of the viscose fabric weight and put it into the medicine tank of the high-pressure equipment, and add 0.12% viscose fabric weight % methanol, then put into the viscose fabric. Cool the CO 2 The gas CO flowing out of the cylinder 2 Cool to liquid.

[0048] The pressure of the high-pressure equipment is first set to 8Mpa, the temperature is 80°C, and the carbon dioxide becomes a supercritical fluid. After impregnating and balancing for 20 minutes, the pressure rises to 30MPa at a speed of 0.5MPa / min; Descending until the end of the experiment yielded viscose fibers loaded with the weight-loss drug theophylline acetate. The drug loading of viscose fiber was 7.2%.

[0049] In order to analyze the slow...

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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 a weight-loss 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 weight-loss drug uses the method of supercritical microemulsion / reverse micelles to dissolve it indirectly in supercritical CO 2 Middle; 3) Put the weight-loss medicine into the medicine 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) Weight-loss drugs are 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 weight-loss 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 makes cellulose fibers have a slimming function processing method. 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 characteristic cosmetic textiles, such as textiles with moisturizing, cooling, antibacterial, anti-inflammatory, slimming and other functions, used in people's daily wear, will greatly...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D06M10/08D06M101/06
CPCD06M10/08D06M2101/06
Inventor 朱维维龙家杰肖红施楣梧
Owner SUZHOU UNIV
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