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Preparation method for fragrant microcapsule and silver-loaded multilayered microcapsule emulsion thereof

A technology of microcapsules and emulsions, applied in the field of preparation of silver-loaded aromatic microcapsule emulsions, can solve the problems of low embedding rate, single performance, high cost, avoid allergic reactions, control sustained release time, improve stability and durability sexual effect

Inactive Publication Date: 2015-08-19
ZHEJIANG TEXTILE & FASHION COLLEGE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For example, the encapsulation method is limited by low embedding rate, short fragrance retention time and general washability; the in-situ polymerization and coagulation method is limited by a certain amount of formaldehyde in the product; the fragrance retention time of the rosin-modified interfacial polymerization method short or average
In addition, the cost of preparation is relatively high, which is mainly reflected in the microcapsule material and process.
[0003] Since the aromatic microcapsules only have the aromatic characteristics of aromatic substances, their performance is relatively simple.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1-1

[0036] (1) Adjust the pH value of 94g of water to 8.0, then add 1g of sodium salt of polystyrene-maleic anhydride copolymer, an anionic emulsifier, fully dissolve and mix to obtain the water phase; add 5g of natural fragrance rose essential oil (oil phase) Into the prepared water phase, fully disperse and mix by mechanical stirring to obtain rose essential oil emulsion.

[0037] (2) Under stirring, 0.1 g of dopa was added to the rose essential oil emulsion at one time for reaction, and the polymerization reaction time was 3 hours to obtain rose microcapsule emulsion. Wherein, the dosage of dopa is 2% of the spice quality in the emulsion.

Embodiment 1-2

[0039] (1) Adjust the pH value of 78g of water to 8.5, then add 2g of positive ion emulsifier octadecyltrimethylammonium chloride to fully dissolve and mix to obtain the water phase; add 20g of artificial fragrance lavender essential oil (oil phase) In the prepared water phase, the lavender essential oil emulsion is obtained after being fully dispersed and mixed by ultrasonic waves.

[0040] (2) Under stirring, add 2g of dopa to the above-mentioned lavender essential oil emulsion to react for 3 hours, then add 2g of dopa, continue polymerization for 6 hours, and obtain lavender microcapsule emulsion. Wherein, the total consumption of dopa is 20% of the spice quality in the emulsion.

Embodiment 1-3

[0042] (1) Adjust the pH value of 88.5g of water to 10.0, then add 1.5g of non-ionic emulsifier Tween 80 to fully dissolve and mix to obtain the water phase; add 10g of natural spice peppermint essential oil (oil phase) to the prepared water phase In the process, the peppermint essential oil emulsion was obtained after sufficient dispersion and mixing by ultrasonic waves.

[0043] (2) Under stirring, add 0.5 g of dopa to the above-mentioned peppermint essential oil emulsion to react for 4 hours, then add 0.5 g of dopa, continue the polymerization reaction for 12 hours, and obtain the peppermint microcapsule emulsion. Wherein, the total consumption of dopa is 10% of the spice quality in the emulsion.

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PUM

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Abstract

The invention discloses a preparation method for a fragrant microcapsule and a silver-loaded multilayered microcapsule emulsion thereof, which belongs to the technical field of microcapsule preparation and particularly relates to a silver-loaded fragrant microcapsule with the dual effects of durable resistance to bacteria and fragrant substance release and a preparation method thereof, and the fragrant microcapsule can be used in the preparation of textiles with fragrance and an antibacterial function. The main steps of the preparation method are as follows: (1) fragrant essential oil emulsion is prepared; (2) a certain amount of dopa compound is added into the fragrant essential oil emulsion for reaction, so that the fragrant microcapsule is obtained; (3) after reaction for a certain period of time, Tollens' reagent is then added to load silver; (4) finally, a certain amount of dopa compound is added for reaction again, and thereby the fragrant silver-loaded multilayered microcapsule is obtained. The microcapsule which is prepared by the preparation method utilizing the self-polymerization and crosslinking reaction of the dopa compound has high controllability, organic solvent is not used, no harmful substances, such as formaldehyde, are produced, no monomers remain, the used materials and process can better meet the requirements of environment protection and health, and the dual effects of fragrance and resistance to bacteria are achieved.

Description

technical field [0001] The invention belongs to the technical field of microcapsule preparation, and in particular relates to a method for preparing a silver-loaded aromatic microcapsule emulsion with dual functions of durable antibacterial and releasing aromatic substances. Background technique [0002] Microcapsule technology is a technology that uses film-forming materials (wall materials) to coat solid or liquid essences (core materials) to form tiny particles. Its unique structure can achieve many purposes when used in aromatic textiles: to improve the core material Processing stability; protect the core material from the influence of the external environment; convert liquid into solid; multi-core material components perform slow release to achieve the effect of maintaining fragrance for a long time. The preparation methods of aromatic microcapsules that have been researched and applied more are (1) β-cyclodextrin aromatic microcapsules: mainly a microcapsule made of β-...

Claims

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Application Information

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IPC IPC(8): B01J13/02C11B9/00A01N25/28A01N59/16A01P1/00
Inventor 王建华倪昭玉陈艳华王瑄李少敏
Owner ZHEJIANG TEXTILE & FASHION COLLEGE
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