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Method for controlling release speed of essential oil-fumigation using semipermeable membrane with nano pore diameter

A release rate, semi-permeable membrane technology, applied in the field of hygienic incense and air disinfection, can solve the problems of difficult control and fast volatilization of essential oils, and achieve the effect of controllable release

Inactive Publication Date: 2009-08-12
广州德工明信环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention mainly aims at the shortcoming of prior art, provides a kind of method that uses nano-aperture semi-permeable membrane to control the release speed of aromatherapy essential oil, the present invention is object with the natural essential oils such as Brazilian sweet orange, lemon, citronella, lavender, aims at In the traditional aromatherapy method, the volatilization speed of essential oil is fast, and it is difficult to control. The release rate of aromatherapy essential oil is controlled according to the difference in the pore size of the semipermeable membrane and the volatilization temperature of the essential oil. The purpose is to propose a method for rapid and controllable release of aromatherapy essential oil.

Method used

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  • Method for controlling release speed of essential oil-fumigation using semipermeable membrane with nano pore diameter
  • Method for controlling release speed of essential oil-fumigation using semipermeable membrane with nano pore diameter
  • Method for controlling release speed of essential oil-fumigation using semipermeable membrane with nano pore diameter

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Controlled release of essential oils from semipermeable membranes at different times

[0029] The PVC film is stretched to form holes, the stretching rate is 2 times of the operating speed, and the stretching rate is 8cm / s, and then soaked in 2% mass fraction of hydrochloric acid for 20min, then soaked in 3% mass fraction of glycerin for 30min, at 12000r Centrifuge under the condition of 5min / min to remove the solvent, and vacuum dry at 50°C for 2h to form a modified PVC membrane with a nanopore size, and the average pore size of the membrane is 50nm.

[0030] A controllable aromatherapy essential oil release device was used to control the release of natural lemon essential oil at different times, and the volatilization rate of the essential oil was compared with and without a semipermeable membrane at the opening of the container. The specific evaluation index is to measure the volatilization rate of lemon essential oil, volatilization rate (release rate)=(original wei...

Embodiment 2

[0034] Controlled release of essential oils from semipermeable membranes at different temperatures

[0035] The PP film is stretched to form holes, the stretching speed is 3 times of the running speed, and the stretching speed is 12cm / s, and then soaked in 2% hydrochloric acid for 20 minutes, then soaked in 3% glycerin for 30 minutes, and then Centrifuge at 12000r / min for 5min to remove the solvent, and vacuum dry at 50°C for 2h to form a modified PP membrane with a nanopore diameter, with an average pore diameter of 100nm.

[0036] use figure 1 The controllable aromatherapy essential oil release device of the company uses cypress and Brazilian sweet orange essential oils as objects to control the release of aromatherapy essential oils controlled by semi-permeable membranes at different temperatures. The experiment uses a cylindrical PE container with a volume of 50ml and a rectangular opening with an area of ​​2cm×5cm on the side surface, adding 5g of essential oil, and keep...

Embodiment 3

[0039] Different semipermeable membranes control the release of aromatherapy essential oils

[0040] For the same kind of aromatherapy essential oil, if semipermeable membranes with different pore sizes are used at the same temperature, the volatilization rate of aromatherapy essential oil is also significantly different, and the release of aromatherapy essential oil can be controlled. use figure 1 The controllable aromatherapy essential oil release device of the company uses Brazilian sweet orange and lemongrass essential oils as objects to control the controlled release of aromatherapy essential oils with different semi-permeable membrane apertures. The experiment uses a cylindrical PE container with a volume of 500ml and a rectangular opening with an area of ​​2cm×5cm on the side surface. Add 5g of essential oil and keep the temperature at 45°C. The semi-permeable membrane adopts modified PP membrane (average membrane pore size 100nm) and modified PVC membrane (membrane av...

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Abstract

The invention discloses a method for using nanometer aperture semipermeable membrane to control release rate of fragrant essential oil, comprising the following steps: adopting semipermeable membrane with an average aperture of 50-100nm and area of 2-100cm to encapsulate the fragrant essential oil in a container of 5-1000ml; retaining the fragrant essential oil at the temperature of 30-60 DEG C to facilitate the fragrant essential oil to permeate the semipermeable membrane with nanometer aperture in the state of volatile gas so as to control the release rate of the fragrant essential oil. In the invention, based on differences in aperture of semipermeable membrane and differences of volatile temperature of the essential oil, the release of the fragrant essential oil encapsulated in the sealed container is effectively controlled, the release rate of the essential oil per day is 0.2-10%; the method of the invention is simple, feasible, effective and controllable in releasing the fragrant essential oil.

Description

Technical field: [0001] The invention belongs to the technical field of hygienic incense and air disinfection, and in particular relates to a method for controlling the release speed of aromatherapy essential oil by using a semi-permeable membrane with a nano-aperture. Background technique [0002] Many Chinese herbal medicines have bactericidal or antibacterial effects, so they are often used to make incense to prevent diseases and get rid of indoor odors. Incense made of botanical medicinal materials and natural aromatic plants not only has a certain antibacterial effect, but also can make the air fresh and pleasant, so it is very popular. [0003] Aromatherapy is to extract the pure essence, that is, essential oils, from the flowers and resins of fragrant plants, and restore the balance of the body and spirit through the most important olfactory and tactile responses. Different types of aromatherapy have different effects. For example, rose aromatherapy can eliminate emo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61L9/02A61L9/013A61L101/56
Inventor 肖凯军王新银玉容郭丹丹
Owner 广州德工明信环保科技有限公司