CN116459195A - Janus structure nanocellulose/aloe essence mask and preparation method thereof - Google Patents
Janus structure nanocellulose/aloe essence mask and preparation method thereof Download PDFInfo
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- CN116459195A CN116459195A CN202310497731.0A CN202310497731A CN116459195A CN 116459195 A CN116459195 A CN 116459195A CN 202310497731 A CN202310497731 A CN 202310497731A CN 116459195 A CN116459195 A CN 116459195A
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- 229920001046 Nanocellulose Polymers 0.000 title claims abstract description 165
- 235000011399 aloe vera Nutrition 0.000 title claims abstract description 103
- 241001116389 Aloe Species 0.000 title claims abstract description 93
- 238000002360 preparation method Methods 0.000 title claims abstract description 41
- 239000006185 dispersion Substances 0.000 claims abstract description 68
- 239000007788 liquid Substances 0.000 claims abstract description 40
- 230000001815 facial effect Effects 0.000 claims abstract description 24
- 238000000034 method Methods 0.000 claims abstract description 24
- 239000003463 adsorbent Substances 0.000 claims abstract description 13
- 240000004808 Saccharomyces cerevisiae Species 0.000 claims abstract description 12
- 235000014680 Saccharomyces cerevisiae Nutrition 0.000 claims abstract description 12
- 238000000855 fermentation Methods 0.000 claims abstract description 12
- 230000004151 fermentation Effects 0.000 claims abstract description 12
- 239000006166 lysate Substances 0.000 claims abstract description 12
- 238000000576 coating method Methods 0.000 claims abstract description 9
- 239000011248 coating agent Substances 0.000 claims abstract description 8
- 238000007865 diluting Methods 0.000 claims abstract description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 32
- 238000001132 ultrasonic dispersion Methods 0.000 claims description 16
- 239000000243 solution Substances 0.000 claims description 15
- 238000001035 drying Methods 0.000 claims description 12
- 244000144927 Aloe barbadensis Species 0.000 claims description 10
- 235000002961 Aloe barbadensis Nutrition 0.000 claims description 10
- 238000002791 soaking Methods 0.000 claims description 10
- 238000003756 stirring Methods 0.000 claims description 9
- 229940069521 aloe extract Drugs 0.000 claims description 8
- 239000002738 chelating agent Substances 0.000 claims description 8
- 239000003906 humectant Substances 0.000 claims description 8
- 238000010907 mechanical stirring Methods 0.000 claims description 8
- 239000011259 mixed solution Substances 0.000 claims description 8
- 239000002562 thickening agent Substances 0.000 claims description 8
- 230000006872 improvement Effects 0.000 claims description 7
- VYFYYTLLBUKUHU-UHFFFAOYSA-N dopamine Chemical compound NCCC1=CC=C(O)C(O)=C1 VYFYYTLLBUKUHU-UHFFFAOYSA-N 0.000 claims description 6
- 229920001661 Chitosan Polymers 0.000 claims description 5
- 238000013320 baculovirus expression vector system Methods 0.000 claims description 4
- 238000002156 mixing Methods 0.000 claims description 4
- 125000002091 cationic group Chemical group 0.000 claims description 3
- 229960003638 dopamine Drugs 0.000 claims description 3
- 229920002401 polyacrylamide Polymers 0.000 claims description 3
- 230000008569 process Effects 0.000 claims description 3
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 2
- 238000007606 doctor blade method Methods 0.000 claims 2
- 239000012141 concentrate Substances 0.000 claims 1
- 230000014759 maintenance of location Effects 0.000 abstract description 9
- 238000010521 absorption reaction Methods 0.000 abstract description 2
- 238000001179 sorption measurement Methods 0.000 abstract description 2
- 238000009423 ventilation Methods 0.000 abstract description 2
- 238000007790 scraping Methods 0.000 abstract 1
- 230000035699 permeability Effects 0.000 description 11
- 239000012528 membrane Substances 0.000 description 10
- 238000010345 tape casting Methods 0.000 description 9
- 239000004745 nonwoven fabric Substances 0.000 description 7
- 238000012360 testing method Methods 0.000 description 7
- 230000000052 comparative effect Effects 0.000 description 6
- 238000007599 discharging Methods 0.000 description 6
- 239000000843 powder Substances 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 239000000835 fiber Substances 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 230000003020 moisturizing effect Effects 0.000 description 4
- 239000004744 fabric Substances 0.000 description 3
- 230000002087 whitening effect Effects 0.000 description 3
- 229920002678 cellulose Polymers 0.000 description 2
- 239000001913 cellulose Substances 0.000 description 2
- 239000002537 cosmetic Substances 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 238000003786 synthesis reaction Methods 0.000 description 2
- 208000020154 Acnes Diseases 0.000 description 1
- 206010067484 Adverse reaction Diseases 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- 208000003251 Pruritus Diseases 0.000 description 1
- 239000013543 active substance Substances 0.000 description 1
- 230000006838 adverse reaction Effects 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 229940006091 aloe polysaccharide Drugs 0.000 description 1
- 230000003796 beauty Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000013064 chemical raw material Substances 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 230000002301 combined effect Effects 0.000 description 1
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- 230000008020 evaporation Effects 0.000 description 1
- 235000013305 food Nutrition 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 230000007803 itching Effects 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- 238000011068 loading method Methods 0.000 description 1
- 239000008204 material by function Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000002159 nanocrystal Substances 0.000 description 1
- 239000002121 nanofiber Substances 0.000 description 1
- -1 polypropylene Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
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- 210000002966 serum Anatomy 0.000 description 1
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Classifications
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K8/00—Cosmetics or similar toiletry preparations
- A61K8/18—Cosmetics or similar toiletry preparations characterised by the composition
- A61K8/96—Cosmetics or similar toiletry preparations characterised by the composition containing materials, or derivatives thereof of undetermined constitution
- A61K8/97—Cosmetics or similar toiletry preparations characterised by the composition containing materials, or derivatives thereof of undetermined constitution from algae, fungi, lichens or plants; from derivatives thereof
- A61K8/9783—Angiosperms [Magnoliophyta]
- A61K8/9794—Liliopsida [monocotyledons]
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K8/00—Cosmetics or similar toiletry preparations
- A61K8/02—Cosmetics or similar toiletry preparations characterised by special physical form
- A61K8/0212—Face masks
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K8/00—Cosmetics or similar toiletry preparations
- A61K8/18—Cosmetics or similar toiletry preparations characterised by the composition
- A61K8/72—Cosmetics or similar toiletry preparations characterised by the composition containing organic macromolecular compounds
- A61K8/73—Polysaccharides
- A61K8/731—Cellulose; Quaternized cellulose derivatives
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K8/00—Cosmetics or similar toiletry preparations
- A61K8/18—Cosmetics or similar toiletry preparations characterised by the composition
- A61K8/96—Cosmetics or similar toiletry preparations characterised by the composition containing materials, or derivatives thereof of undetermined constitution
- A61K8/97—Cosmetics or similar toiletry preparations characterised by the composition containing materials, or derivatives thereof of undetermined constitution from algae, fungi, lichens or plants; from derivatives thereof
- A61K8/9728—Fungi, e.g. yeasts
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61Q—SPECIFIC USE OF COSMETICS OR SIMILAR TOILETRY PREPARATIONS
- A61Q19/00—Preparations for care of the skin
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K2800/00—Properties of cosmetic compositions or active ingredients thereof or formulation aids used therein and process related aspects
- A61K2800/40—Chemical, physico-chemical or functional or structural properties of particular ingredients
- A61K2800/41—Particular ingredients further characterized by their size
- A61K2800/413—Nanosized, i.e. having sizes below 100 nm
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K2800/00—Properties of cosmetic compositions or active ingredients thereof or formulation aids used therein and process related aspects
- A61K2800/80—Process related aspects concerning the preparation of the cosmetic composition or the storage or application thereof
- A61K2800/82—Preparation or application process involves sonication or ultrasonication
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K2800/00—Properties of cosmetic compositions or active ingredients thereof or formulation aids used therein and process related aspects
- A61K2800/80—Process related aspects concerning the preparation of the cosmetic composition or the storage or application thereof
- A61K2800/85—Products or compounds obtained by fermentation, e.g. yoghurt, beer, wine
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/30—Against vector-borne diseases, e.g. mosquito-borne, fly-borne, tick-borne or waterborne diseases whose impact is exacerbated by climate change
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- Cosmetics (AREA)
Abstract
The invention particularly discloses a high-air-permeability high-moisture-retention Janus structure nanocellulose/aloe essence facial mask and a preparation method thereof, wherein the method comprises the following steps: firstly preparing nano cellulose dispersion liquid, then diluting the nano cellulose dispersion liquid to different concentration gradients, adding a lysate of a fermentation product of the saccharomyces cerevisiae into the low concentration dispersion liquid, preparing a Janus structure nano cellulose film with one compact surface and one loose surface by a method of successively scraping and coating nano cellulose with different concentrations, and putting the nano cellulose film into aloe essence added with a positive adsorbent with a certain quality for absorption to obtain the nano cellulose/aloe essence mask. The nanocellulose/aloe essence mask with different densities on two sides is obtained by using a simple preparation method, so that the functions of high ventilation and high moisture retention can be achieved; the positive adsorbent is added into the aloe essence to increase the essence adsorption quantity of the nanocellulose mask, so that the mask utilization rate is improved.
Description
Technical Field
The invention relates to the field of masks, in particular to a Janus structure nanocellulose/aloe essence mask and a preparation method thereof.
Background
In the ancient roman myth, the double-sided god (Janus) has two faces, front and rear, and is expected to be in the past and future. The term "Janus structure" is thus a generic term for a structure composed of a class of materials with distinct properties. With the development of synthesis technology, the definition of the Janus structure is expanding continuously, from an initial double-sided structure to a double-or multi-layer structure covering different geometries, material compositions and functional properties. Designing these different materials with disparate properties on the same structure tends to give unique properties and functions to the overall structure, and so the Janus structure is widely used in the leading-edge fields of chemical synthesis, electronic equipment, medical diagnosis, and biosensing.
Nanocellulose, also known as cellulose nanocrystals, nanofibrillar cellulose, etc., is an aggregate of fibers with diameters <100nm, up to microns in length, obtained by treating the fibers by chemical, physical, biological or a combination of the two. The modified polypropylene has the characteristics of excellent mechanical property, good hydrophilicity, high transparency, excellent biodegradability, biocompatibility, stability and the like, and has more application and research in the fields of food processing, functional materials, papermaking and cosmetics.
Aloe is perennial evergreen herb of the class monocotyledonous, family Aloferaceae, genus Aloe. The aloe polysaccharide and vitamins have good nourishing, moistening and whitening effects on human skin. The existing researches show that aloe has the beauty effects of moisturizing, whitening, removing acnes, improving skin quality, nourishing skin and the like. Therefore, aloe is widely used as a daily chemical raw material in various cosmetics and skin care products.
The facial mask is a common skin care product in daily life, and has multiple effects of moisturizing, whitening, repairing, resisting aging and the like. The facial mask in the market has various types, is the most widely used by using the patch, and mainly comprises facial mask base cloth and essence. Common materials of the mask base cloth include non-woven fabrics, silk, fruit fiber, natural fiber and the like. However, in the process of using the patch type mask, moisture in the mask base cloth is easily evaporated into air to be dried, so that the absorption capacity of skin is reduced, the using effect of the mask is affected, and in addition, adverse reactions such as stuffy feeling, itching and the like are easy to occur due to the fact that the patch type mask has high fitting degree with the skin and poor air permeability.
Disclosure of Invention
In order to overcome the defects and shortcomings of the prior art, the primary purpose of the invention is to provide a preparation method of a Janus structure nanocellulose/aloe essence facial mask with high air permeability and high moisture retention.
The invention aims at providing a preparation method of a Janus structure nanocellulose/aloe essence facial mask with high air permeability and high moisture retention.
The invention further aims to provide the Janus structure nanocellulose/aloe essence facial mask with high air permeability and high moisture retention, which is prepared by the method.
In order to achieve the above purpose, the technical scheme adopted by the invention is as follows:
a preparation method of a Janus structure nanocellulose/aloe essence facial mask comprises the following steps:
(1) Preparation of nanocellulose dispersion:
adding nano cellulose powder into water according to the proportion of 5wt%, stirring for a period of time by using a mechanical stirring device until the nano cellulose is uniformly mixed with the water, and then performing ultrasonic dispersion on the mixed solution by using a cell ultrasonic crusher to obtain nano cellulose dispersion liquid with a certain concentration;
(2) Preparation of Janus structure nanocellulose mask:
adding water to the nanocellulose prepared in the step (1) to dilute, and performing ultrasonic dispersion to obtain nanocellulose dispersion liquid with two concentrations, wherein the high concentration is dispersion liquid A, the low concentration is dispersion liquid B, and the lysate of the fermentation product of the saccharomyces cerevisiae is added into the dispersion liquid B, and fully and uniformly mixing. Firstly pouring a dispersion liquid with certain mass on a knife coater, uniformly knife-coating the dispersion liquid A and drying, then pouring a dispersion liquid B with the same mass on a film, knife-coating and drying by the knife coater to obtain a Janus structure nano cellulose film with one compact surface and one loose surface, and finally cutting the prepared nano cellulose film into a mask shape by a die;
(3) Improvement of aloe essence:
adding aloe extract, humectant, chelating agent, thickener, etc. into water solution to obtain aloe essence, adding adsorbent of certain quality, stirring to mix, dispersing with ultrasonic device, standing in vacuum device for a certain period of time to discharge gas in the aloe essence, and making aloe essence capable of being well adsorbed with nanocellulose facial mask.
(4) Preparation of aloe essence/nanocellulose mask:
soaking the nanocellulose mask prepared in the step (2) in the aloe essence prepared in the step (3) for a certain time to enable the nanocellulose mask to fully absorb the aloe essence, so as to obtain the nanocellulose/aloe essence mask.
Preferably, the cell breaker in step (1) is used for 30min-150min.
Preferably, the concentration of the A dispersion in the step (2) is 1wt% to 3wt%, and the concentration of the B dispersion is 0.1wt% to 0.5wt%.
Preferably, the dispersion in step (2) is used in an amount of 10g to 50g.
Preferably, the lysate of the fermentation product of the Saccharomyces cerevisiae in the step (2) is added in an amount of 2wt% to 5wt%.
Preferably, the blade coating process in step (2) is performed by using a BEVS 1818 micro automatic film coater.
Further preferably, the parameters of the BEVS 1818 mini-automatic film coater are set as follows: the coating speed is 50mm/s, the size of the coating is 200mm multiplied by 200mm, the thickness of the coating is 0.25mm-1mm, the temperature is 40-90 ℃, and the drying time is 20-100 min.
Preferably, the adsorbent in the step (3) is one of cationic polyacrylamide, chitosan and dopamine.
Preferably, the adsorbent in step (3) is added in an amount of 0.5wt% to 2wt%.
Preferably, the soaking time in the step (4) is 30min-120min.
The invention provides a Janus structure nanocellulose/aloe essence facial mask with high air permeability and high moisture retention, which is prepared by the method.
Compared with the prior art, the invention has the following advantages:
(1) According to the invention, the preparation process is simply changed, and the nanocellulose dispersion liquid with two concentrations is subjected to two-time knife coating to prepare the nanocellulose film with the Janus structure with two-sided difference. Compared with the traditional mask, the moisturizing property and the air permeability of the nano cellulose mask are greatly improved.
(2) The functional component is locked on the loose surface of the nano cellulose membrane after the lysate of the fermentation product of the two yeasts is added into the nano cellulose dispersion liquid with low concentration and is dried into a membrane by blade coating, and after the aloe essence is soaked, the lysate of the fermentation product of the two yeasts in the loose surface and aloe active substances form a compound combined effect.
(3) When the aloe essence is prepared, a small amount of adsorbent with good biological safety is added to change the surface charge of the essence, so that the aloe essence can be better combined with the nanocellulose mask, and the load of the nanocellulose mask on the essence is improved.
Drawings
FIG. 1 is a graph showing the comparison of air permeability of examples 1-4 and comparative example 2 and conventional nonwoven fabric masks.
Fig. 2 is a graph showing the mechanical properties of examples 1 to 4 and comparative example 2 and a conventional nonwoven fabric mask.
Fig. 3 is a graph showing the moisture retention of examples 1 to 4 and comparative example 2 and conventional nonwoven fabric masks within 90 minutes.
Detailed Description
The present invention will be described in further detail with reference to examples, but embodiments of the present invention are not limited thereto. For process parameters not specifically noted, reference may be made to conventional techniques.
The instruments and reagents used in the examples are commercially available as usual unless otherwise specified.
Example 1
Preparation of Janus structure nanocellulose/aloe essence facial mask:
(1) Preparation of nanocellulose dispersion:
the nanocellulose powder was added to water in a proportion of 5wt% and stirred for a period of time using a mechanical stirring device until the nanocellulose was mixed well with the water. And then performing ultrasonic dispersion on the mixed solution for 150min by using a cell ultrasonic crusher to obtain a nanocellulose dispersion liquid with the concentration of 5wt%.
(2) Preparation of Janus structure nanocellulose mask:
diluting 5wt% of nano cellulose prepared in the step (1) with water and performing ultrasonic dispersion to obtain nano cellulose dispersion liquid with two concentrations, wherein the concentration of the dispersion liquid A is 3wt%, the concentration of the dispersion liquid B is 0.5wt%, and adding 2wt% of lysate of fermentation products of the saccharomyces cerevisiae, and fully and uniformly mixing. First, 30g of the A dispersion was poured onto a blade coater, uniformly blade-coated and dried. Then 30g of the B dispersion was poured onto the film and doctor-coated and dried by a doctor-coater. The thickness of the knife coating is 0.25mm, the drying temperature is 60 ℃ and the time is 40min. And (3) taking off the dried nano cellulose film from a knife coater to obtain the Janus structure nano cellulose film with one compact surface and one loose surface. Finally, cutting the prepared nano cellulose membrane into a facial mask shape through a die.
(3) Improvement of aloe essence:
adding aloe extract, humectant, chelating agent, thickener, etc. into water solution to obtain aloe essence, adding 2wt% dopamine, stirring to mix, and dispersing with ultrasonic device. Finally, putting the dispersed aloe essence into a vacuum device for standing for a period of time, and discharging the gas in the essence. Finally, the aloe essence which can be well adsorbed with the nanocellulose mask is obtained.
(4) Preparation of aloe essence/nanocellulose mask:
soaking the nanocellulose mask prepared in the step (2) in the aloe essence prepared in the step (3) for 60min to enable the nanocellulose mask to fully absorb the aloe essence. Finally, the nanocellulose/aloe essence mask is obtained.
Example 2
Preparation of Janus structure nanocellulose/aloe essence facial mask:
(1) Preparation of nanocellulose dispersion:
the nanocellulose powder was added to water in a proportion of 5wt% and stirred for a period of time using a mechanical stirring device until the nanocellulose was mixed well with the water. And then performing ultrasonic dispersion on the mixed solution for 60min by using a cell ultrasonic crusher to obtain a nanocellulose dispersion liquid with the concentration of 5wt%.
(2) Preparation of Janus structure nanocellulose mask:
diluting 5wt% of nano cellulose prepared in the step (1) with water and performing ultrasonic dispersion to obtain nano cellulose dispersion liquid with two concentrations, wherein the concentration of the dispersion liquid A is 2wt%, the concentration of the dispersion liquid B is 0.3wt%, and 3wt% of lysate of fermentation products of the saccharomyces cerevisiae is added and fully and uniformly mixed. First, 30g of the A dispersion was poured onto a blade coater, uniformly blade-coated and dried. Then 30g of the B dispersion was poured onto the film and doctor-coated and dried by a doctor-coater. The thickness of the knife coating is 0.5mm, the drying temperature is 40 ℃ and the time is 100min. And (3) taking off the dried nano cellulose film from a knife coater to obtain the Janus structure nano cellulose film with one compact surface and one loose surface. Finally, cutting the prepared nano cellulose membrane into a facial mask shape through a die.
(3) Improvement of aloe essence:
adding aloe extract, humectant, chelating agent, thickener, etc. into water solution to obtain aloe essence, adding 2% cationic polyacrylamide, etc., stirring to mix, and dispersing with ultrasonic device. Finally, putting the dispersed aloe essence into a vacuum device for standing for a period of time, and discharging the gas in the essence. Finally, the aloe essence which can be well adsorbed with the nanocellulose mask is obtained.
(4) Preparation of aloe essence/nanocellulose mask:
soaking the nanocellulose mask prepared in the step (2) in the aloe essence prepared in the step (3) for 120min to enable the nanocellulose mask to fully absorb the aloe essence. Finally, the nanocellulose/aloe essence mask is obtained.
Example 3
Preparation of Janus structure nanocellulose/aloe essence facial mask:
(1) Preparation of nanocellulose dispersion:
the nanocellulose powder was added to water in a proportion of 5wt% and stirred for a period of time using a mechanical stirring device until the nanocellulose was mixed well with the water. And then performing ultrasonic dispersion on the mixed solution for 30min by using a cell ultrasonic crusher to obtain a nanocellulose dispersion liquid with the concentration of 5wt%.
(2) Preparation of Janus structure nanocellulose mask:
diluting 5wt% of nanocellulose prepared in the step (1) with water and performing ultrasonic dispersion to obtain nanocellulose dispersion liquid with two concentrations, wherein the concentration of the dispersion liquid A is 1wt%, the concentration of the dispersion liquid B is 0.1wt%, and 4wt% of lysate of a fermentation product of the saccharomyces cerevisiae is added and fully and uniformly mixed. 50g of the A dispersion was first poured onto a knife coater, knife coated uniformly and dried. 50g of the B dispersion was then poured onto the film and drawn off and dried by a knife coater. The thickness of the knife coating is 1mm, the drying temperature is 60 ℃, and the time is 20min. And (3) taking off the dried nano cellulose film from a knife coater to obtain the Janus structure nano cellulose film with one compact surface and one loose surface. Finally, cutting the prepared nano cellulose membrane into a facial mask shape through a die.
(3) Improvement of aloe essence:
adding aloe extract, humectant, chelating agent, thickener, etc. into water solution to obtain aloe essence, adding 2wt% chitosan, stirring to mix, and dispersing with ultrasonic device. Finally, putting the dispersed aloe essence into a vacuum device for standing for a period of time, and discharging the gas in the essence. Finally, the aloe essence which can be well adsorbed with the nanocellulose mask is obtained.
(4) Preparation of aloe essence/nanocellulose mask:
soaking the nanocellulose mask prepared in the step (2) in the aloe essence prepared in the step (3) for 30min to enable the nanocellulose mask to fully absorb the aloe essence. Finally, the nanocellulose/aloe essence mask is obtained.
Example 4
Preparation of Janus structure nanocellulose/aloe essence facial mask:
(1) Preparation of nanocellulose dispersion:
the nanocellulose powder was added to water in a proportion of 5wt% and stirred for a period of time using a mechanical stirring device until the nanocellulose was mixed well with the water. And then performing ultrasonic dispersion on the mixed solution for 120min by using a cell ultrasonic crusher to obtain a nanocellulose dispersion liquid with the concentration of 5wt%.
(2) Preparation of Janus structure nanocellulose mask:
diluting 5wt% of nanocellulose prepared in the step (1) with water and performing ultrasonic dispersion to obtain nanocellulose dispersion liquid with two concentrations, wherein the concentration of the dispersion liquid A is 2wt%, the concentration of the dispersion liquid B is 0.5wt%, and 5wt% of a lysate of a fermentation product of the saccharomyces cerevisiae is added and fully and uniformly mixed. First, 40g of the A dispersion was poured onto a blade coater, uniformly blade-coated and dried. 40g of the B dispersion was then poured onto the film and drawn off and dried by a knife coater. The thickness of the knife coating is 0.75mm, the drying temperature is 60 ℃ and the time is 40min. And (3) taking off the dried nano cellulose film from a knife coater to obtain the Janus structure nano cellulose film with one compact surface and one loose surface. Finally, cutting the prepared nano cellulose membrane into a facial mask shape through a die.
(3) Improvement of aloe essence:
adding aloe extract, humectant, chelating agent, thickener, etc. into water solution to obtain aloe essence, adding 1wt% chitosan, stirring to mix, and dispersing with ultrasonic device. Finally, putting the dispersed aloe essence into a vacuum device for standing for a period of time, and discharging the gas in the essence. Finally, the aloe essence which can be well adsorbed with the nanocellulose mask is obtained.
(4) Preparation of aloe essence/nanocellulose mask:
soaking the nanocellulose mask prepared in the step (2) in the aloe essence prepared in the step (3) for 60min to enable the nanocellulose mask to fully absorb the aloe essence. Finally, the nanocellulose/aloe essence mask is obtained.
Comparative example 1
Preparation of Janus structure nanocellulose/aloe essence facial mask:
(1) Preparation of nanocellulose dispersion:
the nanocellulose powder was added to water in a proportion of 5wt% and stirred for a period of time using a mechanical stirring device until the nanocellulose was mixed well with the water. And then performing ultrasonic dispersion on the mixed solution for 120min by using a cell ultrasonic crusher to obtain a nanocellulose dispersion liquid with the concentration of 5wt%.
(2) Preparation of Janus structure nanocellulose mask:
diluting 5wt% of nanocellulose prepared in the step (1) with water and performing ultrasonic dispersion to obtain nanocellulose dispersion liquid with two concentrations, wherein the concentration of the dispersion liquid A is 2wt%, the concentration of the dispersion liquid B is 0.5wt%, and 3wt% of lysate of a fermentation product of the saccharomyces cerevisiae is added and fully and uniformly mixed. First, 40g of the A dispersion was poured onto a blade coater, blade-coated uniformly and dried, then 40g of the B dispersion was poured onto a film, and blade-coated and dried by a blade coater. The thickness of the knife coating is 0.75mm, the drying temperature is 60 ℃ and the time is 40min. And (3) taking off the dried nano cellulose film from a knife coater to obtain the Janus structure nano cellulose film with one compact surface and one loose surface. Finally, cutting the prepared nano cellulose membrane into a facial mask shape through a die.
(3) Preparation of aloe essence:
adding aloe extract, humectant, chelating agent, thickener, etc. into water solution to obtain aloe essence, mixing well without adding any adsorbent, and dispersing with ultrasonic device. Finally, putting the dispersed aloe essence into a vacuum device for standing for a period of time, and discharging the gas in the essence. Finally, the aloe essence which can be well adsorbed with the nanocellulose mask is obtained.
(4) Preparation of aloe essence/nanocellulose mask:
soaking the nanocellulose mask prepared in the step (2) in the aloe essence prepared in the step (3) for 60min to enable the nanocellulose mask to fully absorb the aloe essence. Finally, the nanocellulose/aloe essence mask is obtained.
Comparative example 2
The preparation method of the nanocellulose/aloe essence mask with the same structure comprises the following steps:
(1) Preparation of nanocellulose dispersion:
the nanocellulose powder was added to water in a proportion of 5wt% and stirred for a period of time using a mechanical stirring device until the nanocellulose was mixed well with the water. And then performing ultrasonic dispersion on the mixed solution for 120min by using a cell ultrasonic crusher to obtain a nanocellulose dispersion liquid with the concentration of 5wt%.
(2) Preparation of a nanocellulose facial mask:
and (3) diluting 5wt% of the nanocellulose prepared in the step (1) by adding water and performing ultrasonic dispersion to obtain 2wt% of nanocellulose dispersion liquid A. 50g of the A dispersion was poured onto a doctor blade machine, doctor-coated uniformly and dried. The thickness of the knife coating is 0.75mm, the drying temperature is 60 ℃ and the time is 40min. The nanocellulose film with the same structure on both sides is obtained. Finally, cutting the prepared nano cellulose membrane into a facial mask shape through a die.
(3) Improvement of aloe essence:
adding aloe extract, humectant, chelating agent, thickener, etc. into water solution to obtain aloe essence, adding 2wt% chitosan, stirring to mix, and dispersing with ultrasonic device. Finally, putting the dispersed aloe essence into a vacuum device for standing for a period of time, and discharging the gas in the essence. Finally, the aloe essence which can be well adsorbed with the nanocellulose mask is obtained.
(4) Preparation of aloe essence/nanocellulose mask:
soaking the nanocellulose mask prepared in the step (2) in the aloe essence prepared in the step (3) for 60min to enable the nanocellulose mask to fully absorb the aloe essence. Finally, the nanocellulose/aloe essence mask is obtained.
TABLE 1 Effect of different adsorbents on the amount of aloe vera essence loaded on the face mask
As can be seen from table 1, the addition of the adsorbent to the aloe essence can significantly increase the loading of the nanocellulose mask. The essence liquid is positively charged after the adsorbent is added, and can generate electrostatic adsorption effect with the negatively charged nanocellulose, so that the load capacity of the mask is improved.
And (3) testing the ventilation and moisture retention properties of the mask:
air permeability test and mechanical property test were performed on the conventional nonwoven fabric masks of examples 1 to 4 and comparative example 2. The air permeability test used was a PAPT-B01 air permeability tester, and the air pressure difference was set to 100Pa. The mechanical property test is carried out by adopting a universal tensile machine.
Then the samples of examples 1-4 and 2 and the non-woven mask were cut to the same area size and then immersed in the essence, then taken out and weighed and placed in a glass petri dish with the compact face of the mask facing upwards. The petri dish was then placed in an oven at 36 ℃ and the mask was removed and weighed every 10 minutes. The rate of evaporation of the serum was calculated by mass loss to compare the moisture retention of the mask.
Fig. 1 shows the air permeability test results of the mask. As can be seen from fig. 1, the nanocellulose mask having the Janus structure has significantly improved breathability compared to the nanocellulose mask having the single structure. And the breathability of examples 2-4 was much higher than that of conventional nonwoven masks.
Figure 2 shows the mechanical properties of different masks. From fig. 2, it can be seen that the mask prepared from nanocellulose has higher mechanical properties compared with the non-woven fabric mask. And the Janus structure has no influence on the mechanical property of the nano cellulose mask.
Figure 3 shows the results of the moisturization test for different masks. As can be seen from fig. 3, the nanofiber membrane and the nonwoven fabric membrane having the single-layer structure had the worst moisture retention, and had evaporated essence of 90% or more in about 30 minutes. In the embodiment 4, the moisturizing property of the nanocellulose mask with the Janus structure is obviously improved, only 50% of essence is volatilized at 30min, and 90% of essence is volatilized at 70 min.
Claims (10)
1. The preparation method of the Janus structure nanocellulose/aloe essence facial mask is characterized by comprising the following steps of:
(1) Preparation of nanocellulose dispersion:
adding nano cellulose powder into water according to the proportion of 5wt%, stirring for a period of time by using a mechanical stirring device until the nano cellulose is uniformly mixed with the water, and then performing ultrasonic dispersion on the mixed solution by using a cell ultrasonic crusher to obtain nano cellulose dispersion liquid with a certain concentration;
(2) Preparation of Janus structure nanocellulose mask:
diluting the nano cellulose prepared in the step (1) with water and performing ultrasonic dispersion to obtain two concentration nano cellulose dispersion solutions, wherein a high concentration is an A dispersion solution, a low concentration is a B dispersion solution, adding a two-split yeast fermentation product lysate into the B dispersion solution, fully and uniformly mixing, firstly pouring a certain mass of the A dispersion solution on a doctor blade, doctor blade coating the A dispersion solution uniformly and drying, then pouring the B dispersion solution with the same mass on a film, doctor blade coating and drying by the doctor blade to obtain a Janus structure nano cellulose film with one compact surface and one loose surface, and finally cutting the prepared nano cellulose film into a mask shape by a die;
(3) Improvement of aloe essence:
adding aloe extract, humectant, chelating agent, thickener, etc. into water solution to obtain aloe essence, adding adsorbent of certain mass, stirring to mix, dispersing with ultrasonic device, standing in vacuum device for a period of time to remove gas in the aloe essence, and obtaining aloe essence capable of being well adsorbed with nanocellulose facial mask;
(4) Preparation of aloe essence/nanocellulose mask:
soaking the nanocellulose mask prepared in the step (2) in the aloe essence prepared in the step (3) for a certain time to enable the nanocellulose mask to fully absorb the aloe essence, so as to obtain the nanocellulose/aloe essence mask.
2. The method for preparing the Janus structure nanocellulose/aloe vera essence mask according to claim 1, wherein the method comprises the following steps: the cell breaker in the step (1) is used for 30-150 min.
3. The method for preparing the Janus structure nanocellulose/aloe vera essence mask according to claim 1, wherein the method comprises the following steps: the concentration of the A dispersion liquid in the step (2) is 1wt% to 3wt%, and the concentration of the B dispersion liquid is 0.1wt% to 0.5wt%.
4. The method for preparing the Janus structure nanocellulose/aloe vera essence mask according to claim 1, wherein the method comprises the following steps: the amount of the dispersion liquid in the step (2) is 10g-50g; the addition amount of lysate of the fermentation product of the saccharomyces cerevisiae is 2-5 wt%. .
5. The method for preparing the Janus structure nanocellulose/aloe vera essence mask according to claim 1, wherein the method comprises the following steps: the doctor blade process in step (2) is carried out by adopting a BEVS 1818 miniature automatic film coater.
6. The method for preparing the Janus structure nanocellulose/aloe vera essence mask according to claim 5, wherein the method comprises the following steps: parameters of the BEVS 1818 mini-automatic film coater were set as follows: the coating speed is 50mm/s, the size of the coating is 200mm multiplied by 200mm, the thickness of the coating is 0.25mm-1mm, the temperature is 40-90 ℃, and the drying time is 20-100 min.
7. The method for preparing the Janus structure nanocellulose/aloe vera essence mask according to claim 1, wherein the method comprises the following steps: the adsorbent in the step (3) is one of cationic polyacrylamide, chitosan and dopamine.
8. The method for preparing the Janus structure nanocellulose/aloe vera essence mask according to claim 1, wherein the method comprises the following steps: the addition amount of the adsorbent in the step (3) is 0.5-2 wt%.
9. The method for preparing the Janus structure nanocellulose/aloe vera essence mask according to claim 1, wherein the method comprises the following steps: the soaking time in the step (4) is 30-120 min.
10. A Janus structured nanocellulose/aloe vera concentrate mask prepared according to the method of any of the preceding claims 1-9.
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| CN117883320A (en) * | 2024-01-17 | 2024-04-16 | 吉林农业大学 | Preparation method and application of solid nanofiber mask with Janus structure loaded with gastrodia elata polysaccharide |
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