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Preparation method of essential oil microcapsule yarns

A technology of microcapsules and yarns, applied in the field of yarns, can solve the problems of unsatisfactory sustained-release effect of essential oils, poor secondary processing performance and mechanical properties of fiber webs, slow sustained-release effect, etc., and achieve good skin light resistance Aging resistance, satisfying wearing comfort, and simple preparation process

Active Publication Date: 2022-01-14
XINJIANG UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The traditional processing method is to bond essential oil microcapsules on the fabric, but the essential oil fabric obtained by this method is easy to fall off during use and is not washable, and the sustained release effect of essential oil is not satisfactory; in order to improve Sustained release effect, patent CN104593893A discloses a mint composite cellulose fiber and its preparation method, which adopts the method of melt spinning to make the mint composite cellulose fiber contain 1-12wt% mint extract components, and has a fragrance retention time Long characteristics, but the diameter of the prepared composite fiber is too large, the sustained release effect is slow, and the anti-aging effect of essential oils cannot be achieved
In addition, patent CN106637498A discloses a preparation method and its application of self-aromatic natural antibacterial and deodorant fiber, and patent CN1094022775A discloses a kind of essential oil slow-release nanofiber and its preparation method. The essential oil is coated in the fiber coaxially, with High coating amount and good sustained release effect, but coaxial electrospinning has high requirements on the compatibility of polymers and solvents and spinning equipment, which cannot meet the production and promotion of lavender yarn
In order to achieve continuous and stable production of essential oil nanofibers, some scholars have adopted carrier embedding technology in electrospinning. Prepare microcapsules with coated plant essential oils, and then blend with polymers to prepare aromatic nanofiber membranes by electrospinning. In this fiber membrane, the mass fraction of essential oil microcapsules reaches 50%, which has good coating effect and sustained release effect, but the main form of existence of the essential oil nanofibers obtained by this method is fiber webs, and the secondary processing performance and mechanical properties of fiber webs are relatively poor. Blended with other fibers into yarn, the resulting yarn contains less essential oils than lavender, which has anti-photoaging effects on the skin

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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  • Preparation method of essential oil microcapsule yarns

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0052] An essential oil microcapsule is a lavender microcapsule made by a saturated aqueous solution method; wherein, the volume-to-mass ratio of lavender essential oil to β-cyclodextrin is 0.12ml:1g; the inclusion temperature in the saturated aqueous solution method is 39.3°C, and the inclusion Combined time is 1.48h.

[0053] The prepared lavender microcapsule is to take β-cyclodextrin as the wall material, and the capsule structure with lavender essential oil as the core material; and the oil content is 120mg / g; (oil content=essential oil (mg) / microcapsule ( g), the oil content of the microcapsules is tested by liquid chromatography-mass spectrometry)

[0054] The prepared lavender microcapsules were stored indoors at a constant temperature of 25°C, and the content of essential oil in the lavender microcapsules was continuously tested for 28 days. It was found that after 28 days, the release rate of essential oil in the microcapsules was 30%, which has a long-lasting fragra...

Embodiment 2

[0056] An electrospinning device, such as figure 1 As shown, it includes a high-voltage electrostatic positive electrode terminal 1, a high-voltage electrostatic negative electrode terminal 2, and a positive and negative conjugate needle assembly, a positive and negative conjugate nozzle assembly, and a winding roller 13 arranged in sequence along one direction.

[0057] The positive and negative conjugate needle assembly consists of a bracket I3, a rotating metal bell mouth A4 and 4 needle injection pumps 5; the 4 needle injection pumps 5 are all installed on the bracket I3 and the 4 needle injection pumps are divided into positions symmetrical Two sets of needle injection pumps, one of which is connected to the high-voltage electrostatic positive terminal, and the other group is connected to the high-voltage electrostatic negative terminal; the spinnerets of the four needle injection pumps 5 are all located on the same plane a, and each needle injection pump 5 The distance b...

Embodiment 3

[0061] A preparation method of essential oil microcapsule yarn, comprising the steps of:

[0062] (1) Configure the spinning solution: blend the polymer and the solvent, stir on a constant temperature magnetic stirrer, set the temperature at 60°C, and rotate at 600r / min, and stir for about 24 hours until the polymer is completely dissolved Then, at 40°C, add essential oil microcapsules (prepared in Example 1) and continue magnetic stirring until the microcapsules are uniformly dispersed (stirring for half an hour to achieve uniform dispersion) to obtain an electrospinning solution;

[0063] Spinning solution I: the polymer is polyacrylonitrile powder (PAN, relative molecular mass 75000), the solvent is N,N-dimethylformamide (DMF), and the mass concentration of the polymer is 8%, The mass ratio of microcapsules to polymers is 1:1;

[0064] Spinning solution II: the polymer is polyacrylonitrile powder (PAN, relative molecular mass 75000), the solvent is N,N-dimethylformamide (D...

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Abstract

The invention relates to a preparation method of essential oil microcapsule yarns. The preparation method of the essential oil microcapsule yarns comprises the following steps of blending essential oil microcapsules, a high polymer and a solvent to prepare an electrostatic spinning solution; and preparing the essential oil microcapsule yarns by adopting a continuous electrostatic spinning process. According to the continuous electrostatic spinning process, in the collection process of nanofiber base yarns obtained through electrostatic spinning of positive and negative conjugate needles, the nanofiber base yarns penetrate through a metal collection device for electrostatic spinning of positive and negative conjugate spray nozzles so as to be used as a collection system for electrostatic spinning of the positive and negative conjugate spray nozzles, the collection system is used for collecting nanofibers formed by electrostatic spinning of the positive and negative conjugate spray nozzles, and then the yarns are wound along with further extraction of the nanofiber base yarns; and the distance between a spinning nozzle of each positive and negative conjugate needle and a spinning nozzle of each positive and negative conjugate spray nozzle is greater than 50cm. According to the preparation method of the essential oil microcapsule yarns provided by the invention, needle electrostatic spinning and spray nozzle electrostatic spinning are combined to prepare the essential oil nanofibers in batches, so that the content of essential oil microcapsules wrapped by the nanoyarns is greatly increased.

Description

technical field [0001] The invention belongs to the technical field of yarns, and relates to a preparation method of essential oil microcapsule yarns. Background technique [0002] According to the World Health Organization, as many as 60,000 people worldwide die each year from overexposure to ultraviolet radiation. In recent years, the destruction of the environment has intensified the destruction of stratospheric ozone, resulting in an increase in the amount of ultraviolet radiation reaching the ground, and people's awareness of ultraviolet protection has also begun to increase. The anti-skin photoaging aromatic composite functional material can not only improve people's comfort and meet people's requirements for quality of life; it can also reduce the threat of ultraviolet rays in the sun to the human body and improve people's health. Lavender essential oil is a complex mixture of many different types of aromatic compounds, the main components are linalool, linalyl aceta...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01D5/00D01D7/00D02G3/36D01F6/54D01F6/92D01F6/50D01F1/10
CPCD01D5/0015D01D5/0069D01D7/00D02G3/36D01F6/54D01F6/92D01F6/50D01F1/10
Inventor 夏鑫孙哲茹陈玉郝林聪王颖
Owner XINJIANG UNIVERSITY
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