CN113447305A - Micro-channel collector based on humidity driving - Google Patents
Micro-channel collector based on humidity driving Download PDFInfo
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- CN113447305A CN113447305A CN202110683394.5A CN202110683394A CN113447305A CN 113447305 A CN113447305 A CN 113447305A CN 202110683394 A CN202110683394 A CN 202110683394A CN 113447305 A CN113447305 A CN 113447305A
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- bristles
- handle
- responsive hydrogel
- hydrogel film
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/10—Devices for withdrawing samples in the liquid or fluent state
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/10—Devices for withdrawing samples in the liquid or fluent state
- G01N2001/1031—Sampling from special places
Abstract
The invention discloses a humidity-driven micro-channel collector, which comprises a handle, an anchoring layer, a responsive hydrogel film and bristles, wherein the handle is arranged on the anchoring layer; the outer surface of the handle is coated with an anchoring layer, the outer surface of the anchoring layer is coated with a responsive hydrogel film, the anchoring layer is used for fixing the responsive hydrogel film outside the peripheral side of the handle, the responsive hydrogel film is connected with a plurality of bristles, and the bristles are arranged around the peripheral side of the handle; when the humidity rises, the responsive hydrogel film is used for driving the bristles to stretch and open; when the humidity is reduced, the responsive hydrogel film is used for driving the bristles to be folded; therefore, the scheme can realize the collection of liquid by utilizing the change of the environmental humidity, and the driving is very simple, thereby practically solving the problem that the driving mode of the existing collector is very complicated.
Description
Technical Field
The invention relates to the technical field of microchannel collection, in particular to a microchannel collector based on humidity driving.
Background
The fluid collector can be divided into a gas collector, a liquid collector and a solid collector according to the physical characteristics of a target, wherein the gas collector is mainly applied to the fields of atmospheric environment monitoring, health and epidemic prevention and the like, the liquid collector is mainly applied to the fields of collection, marine environment investigation and the like, and the solid collector is mainly applied to the fields of grain production, environmental dust treatment and the like. Most of the current fluid collectors are large in size and difficult to collect fluid in some tiny orifices.
For example, in artificial microchannel devices such as microfluidic pumps, artificial blood vessels, and microporous materials, residual fluid remaining in the microchannels may affect the proper operation of the device; in the field of oil exploitation, a part of residual oil still remains on the oleophylic rock wall surface after water flooding, and the key problem to be solved urgently is to improve the oil displacement efficiency. Therefore, it is very important to design a microchannel collector with high efficiency and simple and convenient driving.
However, in the prior art, the adopted driving mode is external driving, for example, the driving mode adopted in the prior art is external magnetic field driving, so that the complicated magnetic field environment is difficult to create in the actual application process, and the method is not suitable for large-scale popularization and application.
Disclosure of Invention
The invention aims to provide a micro-channel collector based on humidity driving, which aims to solve the problem that the driving mode of the existing collector is very complicated.
In order to solve the technical problem, the invention provides a humidity-driven micro-channel collector, which comprises a handle, an anchoring layer, a responsive hydrogel film and bristles, wherein the handle is arranged on the micro-channel collector; the outer surface of the handle is coated with the anchoring layer, the outer surface of the anchoring layer is coated with the responsive hydrogel film, the anchoring layer is used for fixing the responsive hydrogel film outside the peripheral side of the handle, the responsive hydrogel film is connected with a plurality of bristles, and the bristles are arranged around the peripheral side of the handle; when the humidity is increased, the responsive hydrogel film is used for driving the bristles to stretch and expand; when the humidity is reduced, the responsive hydrogel film is used for driving the bristles to furl.
In one embodiment, the anchoring layer is a reaction product of polyglycidyl methacrylate and acrylic acid.
In one embodiment, the polyglycidyl methacrylate is polyglycidyl methacrylate deposited in a 05% to 1.5% solution of methyl ethyl ketone.
In one embodiment, the polyglycidyl methacrylate is polyglycidyl methacrylate formed by annealing.
In one embodiment, the handle is a glass handle.
In one embodiment, the responsive hydrogel film is the reaction product of acrylamide and N, N' -methylenebisacrylamide.
In one embodiment, the surface on the peripheral side of the handle comprises a gripping region and a collection region, which are arranged in an array along the length of the handle; the acquisition region is coated with the anchoring layer, the surface of the anchoring layer is coated with the responsive hydrogel film, and the plurality of bristles are arranged at each position of the acquisition region.
In one embodiment, when humidity and humidity are increased, the bristles and the handle form an included angle of 80-90 degrees.
In one embodiment, the responsive hydrogel film is used for driving the bristles to furl in a direction away from the holding area when the humidity is reduced.
In one embodiment, the bristles are rigid bristles.
The invention has the following beneficial effects:
when the humidity rises, the responsive hydrogel film is used for driving the bristles to stretch and expand, so that the bristles are in an expanded state after the micro-channel collector is placed in a region needing collecting, and the liquid is collected; after the micro-channel collector is moved out of the collected area, the responsive hydrogel film is used for driving the bristles to be folded when the humidity is reduced, so that the bristles are folded, and the collected liquid is discharged from the bristles; obviously, the method avoids a complex driving mode, thereby practically solving the problem that the driving mode of the existing collector is very complex.
Drawings
In order to more clearly illustrate the technical solution of the present invention, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic diagram of a structure provided by an embodiment of the present invention;
FIG. 2 is a schematic cross-sectional view of FIG. 1;
FIG. 3 is a schematic view of the bristles of FIG. 2 in an expanded state;
FIG. 4 is a schematic diagram of a manufacturing process of a micro-channel collector according to an embodiment of the present invention;
fig. 5 is a schematic view of the tubular structure of fig. 4 with the tubular structure removed.
The reference numbers are as follows:
10. a handle; 11. a gripping area; 12. a collection zone; 20. an anchoring layer; 30. a responsive hydrogel film; 40. brushing; 50. a cylindrical structure.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.
The present invention provides a humidity-driven microchannel collector, embodiments of which are shown in fig. 1, 2, 3 and 5, and which includes a handle 10, an anchor layer 20, a responsive hydrogel film 30, and bristles 40; the outer surface of the handle 10 is coated with the anchoring layer 20, the outer surface of the anchoring layer 20 is coated with the responsive hydrogel film 30, the anchoring layer 20 is used for fixing the responsive hydrogel film 30 to the periphery of the handle 10, the responsive hydrogel film 30 is connected with a plurality of bristles 40, and the plurality of bristles 40 are arranged around the periphery of the handle 10; when the humidity rises, the responsive hydrogel film 30 is used for driving the plurality of bristles 40 to stretch and expand; the responsive hydrogel film 30 is used to bring the plurality of bristles 40 together when the humidity is reduced.
The responsive hydrogel film 30 is a material which can be deformed in a stretching way according to the change of humidity, and when the collection is not carried out, the responsive hydrogel film 30 drives the bristles 40 to be furled due to the lower environmental humidity, so that the micro-channel collector can be conveniently placed in an area needing to be collected; after the micro-channel collector enters the area to be collected, the responsive hydrogel film 30 can immediately drive the bristles 40 to be in an open state due to the rise of the environmental humidity, so that the liquid is trapped and collected; after the collection is finished, the micro-channel collector can be taken out, and the responsive hydrogel film 30 drives the bristles 40 to be folded due to the reduction of the environmental humidity, so that the liquid collected in the bristles 40 is discharged; obviously, the embodiment omits a complex driving mode, thereby practically solving the problem that the driving mode of the existing collector is very complex.
In this embodiment, the bristles 40 are preferably rigid bristles, that is, the rigidity of the bristles 40 is increased to ensure that the bristles 40 can be better maintained in the open state, so as to provide better guarantee for the collection efficiency and the collection quality.
As shown in fig. 2, 3 and 5, the surface of the peripheral side of the handle 10 comprises a gripping region 11 and a collection region 12, the gripping region 11 and the collection region 12 being arranged in line along the length of the handle 10; the acquisition region 12 is coated with an anchor layer 20, the surface of the anchor layer 20 is coated with a responsive hydrogel film 30, and a plurality of bristles 40 are disposed throughout the acquisition region 12.
In the orientation shown, the gripping region 11 is disposed below the handle 10, the collection region 12 is disposed above the handle 10, and the ratio of the two areas is approximately 1: 3, so as to enlarge the acquisition area as much as possible on the basis of ensuring convenient holding; and a plurality of bristles 40 disposed about acquisition region 12, sufficient acquisition is assured about acquisition region 12.
In this embodiment, it is preferable that when the humidity rises, the bristles 40 and the handle 10 have an included angle of 80 ° to 90 °, such as 80 °, 85 ° or 90 °, and after the arrangement, the bristles 40 can be fully opened, thereby improving the collection efficiency and quality.
In addition, in this embodiment, preferably, when the humidity is reduced, the responsive hydrogel film 30 is used to drive the bristles 40 to be folded in a direction away from the holding region 11, in the illustrated direction, that is, the bristles 40 are all folded upwards, and after this arrangement, the folded bristles 40 can be prevented from touching the hand of the user, so as to prevent the sample from being contaminated.
It should be noted that, in order to achieve the stretching, folding and angle control of the bristles 40, only the appropriate responsive hydrogel film 30 needs to be selected, and the adjustment in the production and development processes is specifically selected; for a more clear explanation, the following provides an example of a production mode of the micro-channel collector, which is as follows (refer to fig. 4 and 5):
experimental materials and early preparation: acrylamide (AA, Acrylamide), N '-methylenebisacrylamide (bis-AA, N' -methylenebisacrylamide), Ammonium Persulfate (APS), azobisisobutyronitrile (AIBN, azo-bis-isobutronitril), Glycidyl Methacrylate (GMA), acrylic acid (ACA, acrylic acid), and Methyl Ethyl Ketone (MEK). Glycidyl Methacrylate (GMA) is used as a raw material, AIBN is used as a solvent, and a free radical polymerization method is adopted to synthesize the poly (glycidyl methacrylate) (PGMA). A mixture of 30% GMA and 1% AIBN in MEK was purged with argon, placed in a water bath at 60 ℃ for 6 hours, and after polymerization PGMA was purified by multiple precipitation with diethyl ether and dried under vacuum for 24 hours.
In a first step, a sample of an array of bristles 40 is prepared inside a cylindrical structure 50 using a Bosch process, the sample is washed using argon plasma, and is cured at room temperature for at least 12 hours to form silanol groups.
Secondly, manufacturing an anchoring layer 20, wherein the anchoring layer 20 is a reaction product of polyglycidyl methacrylate and acrylic acid, and the polyglycidyl methacrylate is polyglycidyl methacrylate formed by annealing treatment; in the fabrication, an anchor layer 20 made of polyglycidyl methacrylate may be deposited in a 1% solution of methyl ethyl ketone, and annealed at a high temperature for about 1 hour to ensure that the glycidyl groups of the polyglycidyl methacrylate form covalent bonds with silanol groups on the surface of the sample.
The concentration of the methyl ethyl ketone solution is not exclusive, and the poly glycidyl methacrylate is preferably poly glycidyl methacrylate deposited in a 05% -1.5% methyl ethyl ketone solution, preferably at a concentration of 0.5%, 1% or 1.5%, and the anchoring layer 20 manufactured in this way has better anchoring quality, so that the responsive hydrogel film 30 can be better anchored on the handle 10.
In particular, the handle 10 may be preferably made of glass, so as to form a better matching effect with the material of the anchoring layer 20, thereby further improving the fixing effect of the anchoring layer 20 on the handle 10.
Thirdly, forming a responsive hydrogel film 30, wherein the responsive hydrogel film 30 is a reaction product of acrylamide and N, N' -methylene bisacrylamide; in the fabrication, the anchoring layer 20 is uniformly coated on the surface of the handle 10, in-situ radical copolymerization is performed using N, N' -methylenebisacrylamide and acrylamide as cross-linking agents, polymerization is initiated by thermal induction, droplets of the polymerization solution are deposited between the handle 10 and the cylindrical structure 50 with the bristles 40, and the cylindrical structure is placed in an oven at 50 ℃ for 1 hour, after the polymerization is completed, the sample is dried in vacuum, and finally, shear stress is applied to separate the two surfaces so that the bristles 40 are partially embedded in the responsive hydrogel film 30.
The responsive hydrogel film 30 manufactured in this manner has a more sensitive response effect, thereby ensuring that the bristles 40 are more sensitive to being opened and closed, thereby improving the collection efficiency and quality.
While the foregoing is directed to the preferred embodiment of the present invention, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention.
Claims (10)
1. A micro-channel collector based on humidity driving is characterized in that,
comprises a handle, an anchoring layer, a responsive hydrogel film and bristles;
the outer surface of the handle is coated with the anchoring layer, the outer surface of the anchoring layer is coated with the responsive hydrogel film, the anchoring layer is used for fixing the responsive hydrogel film outside the peripheral side of the handle, the responsive hydrogel film is connected with a plurality of bristles, and the bristles are arranged around the peripheral side of the handle;
when the humidity is increased, the responsive hydrogel film is used for driving the bristles to stretch and expand;
when the humidity is reduced, the responsive hydrogel film is used for driving the bristles to furl.
2. The microchannel collector of claim 1, wherein the anchoring layer is a reaction product of polyglycidyl methacrylate and acrylic acid.
3. The microchannel collector of claim 2, wherein the polyglycidyl methacrylate is polyglycidyl methacrylate deposited in a 05% to 1.5% solution of methyl ethyl ketone.
4. The micro-channel collector as claimed in claim 3, wherein the poly glycidyl methacrylate is poly glycidyl methacrylate formed by annealing treatment.
5. The microchannel collector of any of claims 2 to 4, wherein the handle is a glass handle.
6. The microchannel collector of claim 1, wherein the responsive hydrogel film is a reaction product of acrylamide and N, N' -methylenebisacrylamide.
7. The microchannel collector of claim 1, wherein the surface on the peripheral side of the handle comprises a gripping region and a collection region, the gripping region and the collection region being arranged in an array along the length of the handle; the acquisition region is coated with the anchoring layer, the surface of the anchoring layer is coated with the responsive hydrogel film, and the plurality of bristles are arranged at each position of the acquisition region.
8. The microchannel collector of claim 7, wherein the bristles form an angle of 80 ° to 90 ° with the handle when humidity increases.
9. The microchannel collector of claim 7, wherein the responsive hydrogel membrane is configured to urge the plurality of bristles to collapse away from the gripping region when humidity is reduced.
10. The microchannel collector of claim 1, wherein the bristles are rigid bristles.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110683394.5A CN113447305A (en) | 2021-06-21 | 2021-06-21 | Micro-channel collector based on humidity driving |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110683394.5A CN113447305A (en) | 2021-06-21 | 2021-06-21 | Micro-channel collector based on humidity driving |
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| US20070077396A1 (en) * | 2005-09-30 | 2007-04-05 | Joanna Aizenberg | Surfaces physically transformable by environmental changes |
| US20080072357A1 (en) * | 2006-09-14 | 2008-03-20 | Lucent Technologies Inc. | Reversible actuation in arrays of nanostructures |
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| CN109942744A (en) * | 2019-03-13 | 2019-06-28 | 同济大学 | A kind of high intensity wet sensitive aerogel and preparation method thereof |
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2021
- 2021-06-21 CN CN202110683394.5A patent/CN113447305A/en active Pending
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| US20070077396A1 (en) * | 2005-09-30 | 2007-04-05 | Joanna Aizenberg | Surfaces physically transformable by environmental changes |
| US20080072357A1 (en) * | 2006-09-14 | 2008-03-20 | Lucent Technologies Inc. | Reversible actuation in arrays of nanostructures |
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| CN109942744A (en) * | 2019-03-13 | 2019-06-28 | 同济大学 | A kind of high intensity wet sensitive aerogel and preparation method thereof |
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