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Efficient antibacterial chitosan essential oil microcapsule preparation method

A technology of microcapsules and chitosan, which is applied in the field of preparation of high-efficiency antibacterial chitosan essential oil microcapsules, can solve the problems of downstream product conflicts, low application efficiency of natural essential oils and the like, and achieves good effects.

Active Publication Date: 2015-10-14
TIANJIN CHENGJIAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The object of the present invention is to provide a kind of preparation method of high-efficiency antibacterial chitosan essential oil microcapsules, in order to guarantee to bring into play the antibacterial effect of core material natural essential oil and wall material chitosan, chitosan quaternary ammonium salt itself, solve natural Low application efficiency of essential oils, conflicts with downstream products, etc.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0022] The preparation method of high-efficiency antibacterial chitosan essential oil microcapsules comprises the following steps:

[0023] (1) preparation of chitosan aqueous solution

[0024] Weigh 0.5-2 parts of acetic acid and dissolve in 70-90 parts of deionized water to prepare an aqueous solution of acetic acid. 0.5-2 parts of chitosan are weighed and fully dissolved in the prepared acetic acid aqueous solution under stirring to obtain the chitosan aqueous solution.

[0025] (2) Preparation of polyvinyl alcohol aqueous solution

[0026] Weigh 5-10 parts of polyvinyl alcohol and 80-90 parts of deionized water and place them together in a three-necked flask, heat to 90-100° C. under stirring, and dissolve to obtain an aqueous solution of polyvinyl alcohol.

[0027] (3) Preparation of core material emulsion

[0028] Weigh 2 to 6 parts of essential oils, 0.1 to 0.5 parts of nonionic emulsifier, 0.1 to 0.3 parts of chitosan quaternary ammonium salt, and 0.1 to 1 part of p...

Embodiment 1

[0034] Weigh 0.5 parts of acetic acid and dissolve in 70 parts of deionized water to prepare an aqueous solution of acetic acid. Weigh 0.5 part of viscosity average molecular weight as 1×10 4 1. The chitosan whose deacetylation degree is 80% is fully dissolved in the prepared acetic acid aqueous solution under stirring to obtain the chitosan aqueous solution. Weigh 5 parts of polyvinyl alcohol and 80 parts of deionized water and put them together in a three-necked flask, heat to 90° C. under stirring, and dissolve to obtain an aqueous solution of polyvinyl alcohol. Weigh 2 parts of lavender essential oil or thyme essential oil or clove essential oil, 0.1 part of non-ionic emulsifier Triton X-100, 0.1 part of viscosity-average molecular weight of 1×10 4 , degree of substitution is 95% chitosan quaternary ammonium salt, 0.1 part of prepared polyvinyl alcohol aqueous solution joins in chitosan aqueous solution jointly, carries out emulsification under the rotating speed of 5000r...

Embodiment 2

[0036] Weigh 1 part of acetic acid and dissolve it in 80 parts of deionized water to prepare an aqueous solution of acetic acid. Weigh 1 portion of viscosity-average molecular weight of 5 × 10 4 1. The chitosan whose deacetylation degree is 85% is fully dissolved in the prepared acetic acid aqueous solution under stirring to obtain the chitosan aqueous solution. Weigh 7 parts of polyvinyl alcohol and 85 parts of deionized water and place them together in a three-neck flask, heat to 95° C. under stirring, and dissolve to obtain an aqueous solution of polyvinyl alcohol. Weigh 4 parts of lemongrass essential oil or citronella essential oil or eucalyptus oil, 0.3 part of nonionic emulsifier Tween-80, 0.2 part of viscosity-average molecular weight of 5 × 10 4, degree of substitution is 90% chitosan quaternary ammonium salt, 0.5 part of prepared polyvinyl alcohol aqueous solution joins in chitosan aqueous solution jointly, carries out emulsification under the rotating speed of 1000...

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Abstract

The present invention provides an efficient antibacterial chitosan essential oil microcapsule preparation method, which comprises chitosan aqueous solution preparing, polyvinyl alcohol aqueous solution preparing, core material emulsion preparing, and efficient antibacterial chitosan essential oil microcapsule preparing so as to obtain the efficient antibacterial chitosan essential oil microcapsules. According to the present invention, the method has characteristics of safety and environmental protection, and the used raw materials are the natural products; and the product microcapsules are cationic, have characteristics of efficient antibacterial effect, high essential oil content and good slow release property, and can be directly used for fabric post-finishing and related function nursing products, and the bacterial inhibition rate of the obtained fabric on Staphylococcus and escherichia coli is up to 85%.

Description

technical field [0001] The invention belongs to the technical field of textile finishing, and specifically relates to a high-efficiency antibacterial type prepared by a single coacervation method, which uses chitosan and chitosan quaternary ammonium salt as a composite wall material, natural essential oil as a core material, and has an efficient antibacterial effect. A preparation method of chitosan essential oil microcapsules. Background technique [0002] Under the background of economic conditions and science and technology in today's society, people's demand for daily necessities tends to be more and more functional and natural. The application of flavors and fragrances is not limited to providing comfortable and pleasant aromas. Some natural essential oils can bring It can be used for medical treatment and health care, or it can play the role of antibacterial, sterilizing, moisturizing, skin care and repairing, or it can have the effect of refreshing, calming the nerves...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06M23/12D06M15/03D06M15/01B01J13/02D06M101/06
Inventor 费学宁张宝莲赵洪宾李婉晴
Owner TIANJIN CHENGJIAN UNIV
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