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A kind of whole bio-based anti-ultraviolet type mosquito repellent microcapsule and preparation method thereof

A microcapsule, bio-based technology, applied in microcapsule preparations, botanical equipment and methods, microsphere preparation, etc., can solve the problems of adding anti-ultraviolet chemical treatment procedures, complex preparation processes, emulsifier residues, etc. Market application prospect, uniform particle size, good stability effect

Active Publication Date: 2021-10-26
上海驰纺材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] But, the preparation of natural mosquito repellent microcapsule or adopt non-biodegradable capsule wall (as: CN103194911B and CN107439542A) at present, perhaps adds a large amount of synthetic emulsifiers and harmful curing agent (as formaldehyde etc.) in microcapsule preparation, these The emulsifier will partially remain in the final product and cause potential harm to the human body (such as: CN105594755B, CN102926201B, CN105165911B and CN104872215B)
In addition, in the field of textiles, mosquito repellent microcapsules are often used in summer clothing, and summer clothing also has certain requirements for anti-ultraviolet rays. At the same time, achieving mosquito repellent and anti-ultraviolet effects requires adding anti-ultraviolet chemicals or new treatment processes, and the preparation process is relatively complicated.

Method used

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  • A kind of whole bio-based anti-ultraviolet type mosquito repellent microcapsule and preparation method thereof
  • A kind of whole bio-based anti-ultraviolet type mosquito repellent microcapsule and preparation method thereof
  • A kind of whole bio-based anti-ultraviolet type mosquito repellent microcapsule and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] First, 10 g of polylactic acid and 10 g of citronella oil were weighed and dissolved in 20 mL of dichloromethane solution to form an oil phase, and 0.8 g of alkali lignin was weighed and dispersed in 40 mL of water to form a water phase under the action of magnetic stirring. The oil-in-water emulsion is prepared by using an internal pressure Shirasu porous glass membrane (SPG membrane) emulsifier. The specific process of emulsion preparation is: under the action of nitrogen pressure, the oil phase passes through the SPG membrane (pore size is 1 μm), thereby forming oil on the surface of the membrane. Under the flushing action of the water phase, the oil phase droplets are peeled off from the membrane surface to obtain an oil-in-water emulsion.

[0036] Then, the oil-in-water emulsion was stirred for 12 hours with a magnetic stirrer under normal temperature and pressure conditions to evaporate and remove the solvent dichloromethane, so that the microcapsules were solidifi...

Embodiment 2

[0039] First, 10 g of polylactic acid and 10 g of lemon eucalyptus oil were dissolved in 20 mL of dichloromethane solution to form an oil phase, and 0.8 g of alkali lignin was weighed and dispersed in 40 mL of water to form a water phase under the action of magnetic stirring. The oil-in-water emulsion is prepared by using an internal pressure Shirasu porous glass membrane (SPG membrane) emulsifier. The specific process of emulsion preparation is: under the action of nitrogen pressure, the oil phase passes through the SPG membrane (pore size is 0.5 μm), thereby forming on the surface of the membrane. Oil phase droplets, under the flushing action of the water phase, the oil phase droplets are peeled off from the membrane surface to obtain an oil-in-water emulsion.

[0040] Then, the oil-in-water emulsion was stirred for 15 hours with a magnetic stirrer under normal temperature and pressure conditions to evaporate and remove the solvent dichloromethane, so that the microcapsules w...

Embodiment 3

[0043] First, 6.67g polylactic acid and 13.33g citronella oil were weighed and dissolved in 20mL dichloromethane solution to form an oil phase, and 0.9g sodium lignosulfonate was weighed and dispersed in 40mL water to form a water phase under the action of magnetic stirring. The oil-in-water emulsion is prepared by using an internal pressure Shirasu porous glass membrane (SPG membrane) emulsifier. The specific process of emulsion preparation is: under the action of nitrogen pressure, the oil phase passes through the SPG membrane (pore size is 0.2 μm), thereby forming on the surface of the membrane. Oil phase droplets, under the flushing action of the water phase, the oil phase droplets are peeled off from the membrane surface to obtain an oil-in-water emulsion.

[0044] Then, the oil-in-water emulsion was stirred for 12 hours with a magnetic stirrer under normal temperature and pressure conditions to evaporate and remove the solvent dichloromethane, so that the microcapsules we...

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Abstract

The invention relates to an all-bio-based anti-ultraviolet type mosquito repellent microcapsule and a preparation method thereof. The capsule wall, capsule core and emulsifier of the invention are all selected from biodegradable materials, and the product has biodegradability, safety and environmental protection; the preparation method is simple and easy to control, and the cost is low, and the obtained microcapsules have both mosquito repellent effect and anti-ultraviolet effect. It has a good market application prospect.

Description

technical field [0001] The invention belongs to the field of functional microcapsules, and in particular relates to a fully bio-based anti-ultraviolet mosquito repellent microcapsule and a preparation method thereof. Background technique [0002] Mosquitoes are very harmful to humans. In addition to directly biting and sucking blood, affecting people's sleep, rest and normal life and work, the more serious harm of mosquitoes is the spread of various diseases, endangering human health and life. Diseases transmitted by mosquitoes include catastrophic diseases such as malaria, lymphatic filariasis, Japanese encephalitis and dengue fever. Mosquitoes can also transmit viruses, such as yellow fever. Mosquito repellent textiles are one of the more effective and safe means in various anti-mosquito measures. Mosquito repellent textiles are prepared by using different types of mosquito repellents through textile fabric finishing. Natural mosquito repellents have attracted widespread...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D06M23/12D06M15/507D06M13/00D06M15/01B01J13/02A01N65/28A01N65/44A01N25/28A01P17/00D06M101/06
CPCA01N25/28A01N65/00A01N65/28A01N65/44B01J13/02D06M13/00D06M15/01D06M15/507D06M23/12D06M2101/06D06M2200/25Y02A50/30
Inventor 王先锋杜博超靳晓松杨兴友朱建梅
Owner 上海驰纺材料科技有限公司
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