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Supercritical CO2 fluid technique based processing method for endowing cellulose fibers with skin whitening function

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 whitening function, which can solve the problems of single function, complicated finishing process, and relatively small content of functional content, etc., to achieve The effect of increasing the effective volume, good hand feeling and good sustained release effect

Active Publication Date: 2018-11-02
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 hydrophilization and other processing), 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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  • Supercritical CO2 fluid technique based processing method for endowing cellulose fibers with skin whitening function
  • Supercritical CO2 fluid technique based processing method for endowing cellulose fibers with skin whitening function
  • Supercritical CO2 fluid technique based processing method for endowing cellulose fibers with skin whitening function

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Example 1: Supercritical CO 2 Method for fluid loading whitening drug resveratrol to viscose fiber

[0035] First, wash the viscose fabric with ethanol and deionized water, dry and balance for 24 hours and weigh it. Take resveratrol according to 8.5% of the weight of the viscose fabric and put it into the medicine tank of the high-pressure equipment, and add the weight of the viscose fabric 0.1% methanol, then put into the viscose fabric. Cool the CO 2 The gas CO flowing out of the cylinder 2 Cool to liquid.

[0036] The pressure of the high-pressure equipment is first set to 12Mpa, the temperature is 100°C, and the carbon dioxide becomes a supercritical fluid. After impregnating and balancing for 25 minutes, the pressure rises to 30MPa at a speed of 0.5MPa / min; Descending until the end of the experiment, viscose fibers loaded with the whitening drug resveratrol were obtained. The drug loading of viscose fiber was 6.4%.

[0037] In order to analyze the sustained-r...

Embodiment 2

[0040] Example 2: Supercritical CO 2 Method for loading whitening drug Piperuminine into cotton fiber by fluid

[0041] Weigh an appropriate amount of cotton fiber, prepare a water-containing ionic liquid 1-butyl-3-methylimidazolium chloride salt as a solution, the water content is 2.5%, immerse the cotton cellulose fiber in it, the bath ratio range is 1:28, set The temperature is 80°C, and the time is 45 minutes.

[0042] After the cotton fiber is washed with ethanol and deionized water, it is dried and balanced for 24 hours and weighed. Take by weighing 8.5% of the weight of cotton fiber and put it into the medicine tank of the high-pressure equipment, and add 0.06% of the weight of the cotton fabric. Ethanol, and then into 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 equipment is set to 21Mpa, and the temperature is 50°C. of cotton fibers. The drug load...

Embodiment 3

[0046] Example 3: Supercritical CO 2 Method for Fluid Loading Whitening Drug Pantolactone to Tencel Fiber

[0047] First, take an appropriate amount of Tencel fabric, wash it with ethanol and deionized water, dry it for 24 hours and weigh it. Weigh the panlactone according to the weight of Tencel fabric at 9.5%, put it into the medicine tank of the high-pressure equipment, and add Tencel fabric 0.12% ethanol by weight, then put into Tencel fabric. The gaseous carbon dioxide flowing out of the carbon dioxide cylinder is cooled into liquid by cooling tank.

[0048] The pressure of the high-pressure equipment is first set to 12Mpa, the temperature is 100°C, and the carbon dioxide becomes a supercritical fluid. After immersion balance for 25 minutes, the pressure rises to 30MPa at a speed of 1.0MPa / min; Decline, until the end of the experiment, to get loaded with whitening drug pantolactone into Tencel fibers. The drug loading of Tencel fiber is 7.8%.

[0049] In order to anal...

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Abstract

The invention relates to a supercritical CO2 fluid technique based processing method for endowing cellulose fibers with a skin whitening function. The method includes: 1) subjecting the cellulose fibers to pre-swelling or pretreatment; 2) adding auxiliary agents to increase solubility of skin whitening agents in supercritical CO2, adopting a supercritical microemulsion / reversed micelle method forindirectly dissolving hydrophilic skin whitening agents hardly dissoluble in supercritical CO2 into the supercritical CO2; 3) adding the skin whitening agents into an agent groove of high-pressure equipment, vacuumizing, feeding into CO2, raising the internal pressure of a vessel to 8-30MPa at 32-120 DEG C to obtain supercritical CO2 fluid, and soaking the cellulose fibers into the supercritical CO2; 4) enabling the skin whitening agents dissolved in the supercritical CO2 to enter the pre-swelled cellulose fibers, wherein the agent-carrying supercritical CO2 fluid and the cellulose fibers havecontinuous relative movement, and the anti-oxidation agents stay in amorphous regions of the cellulose fibers after pressure relief and form controlled-release agent-carrying cellulose fibers.

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 fiber have whitening function. 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, whitening and other functions, used in people's daily...

Claims

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Application Information

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IPC IPC(8): D06M13/152D06M13/228D06M13/355D06M14/04D06M23/00D06M101/06
CPCD06M13/152D06M13/228D06M13/355D06M14/04D06M23/00D06M2101/06
Inventor 朱维维王红星龙家杰肖红施楣梧
Owner SUZHOU UNIV
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