141results about "Gel preparation" patented technology

The present invention relates to a colloidal composition comprising unmodified, discrete cellulose microparticles, such as a colloidal emulsion or colloidal gel, a method of preparing the colloidal composition and uses of the colloidal composition and cellulose particles The colloidal composition comprises a continuous phase and a dispersed phase, wherein the continuous phase is a liquid; wherein the dispersed phase comprises cellulose microparticles which are dispersed in the continuous phase of the colloidal composition, wherein the cellulose microparticles have a mean average particle length of from 0.1 to 20 µm a mean average particle width from 0.05 to 1.3 µm, and a maximum thickness not exceeding 0.2 µm determined by scanning electron microscopy; and an aspect ratio of length / width of 1 to 25, and wherein the colloidal composition has a flow index n of ≤ 1 determined by a rheometer at NTP (normal temperature (25°C) and pressure (1 atm)).

The invention provides polyacrylic acid-carboxylated chitosan interpenetrating network hydrophobic modified hydrogel as well as a preparation method and application thereof, and belongs to the technical field of wastewater treatment. The preparation method comprises the following steps: mixing an acrylic monomer, a hydrophilic acrylate monomer, an etherification type acrylamide monomer, an allyl quaternary ammonium salt type hydrophobic monomer, a crosslinking monomer and water, then mixing with a chitosan compound, and adjusting the pH value to obtain a reaction solution; and mixing the reaction liquid and a photoinitiator, then carrying out polymerization reaction, and sequentially pre-freezing and freeze-drying the obtained polymer hydrogel. Through multiple synergistic effects of photo-initiated rapid polymerization, amphiphilic hydrophobic modification, etherification auxiliary crosslinking and a chitosan compound interpenetrating network, the structural stability, complexing efficiency, industrial applicability and heavy metal adsorption performance are comprehensively improved; the adsorption rate and capacity of the hydrogel disclosed by the invention are obviously superior to those of the existing similar polyacrylic acid-based or chitosan-based hydrogel.

The invention belongs to the technical field of photo-thermal material engineering, and particularly relates to a salt-resistant hydrogel evaporator utilizing solar evaporation for power generation and a preparation method and application thereof. The salt-tolerant hydrogel evaporator is prepared from the following raw materials: polyvinyl alcohol, hydrophilic conductive nanoparticles, bacterial nanocellulose and carbon nanotubes. Polyvinyl alcohol (PVA) is used as a framework, bacterial cellulose (BC) jointly forms a hydrogel structure with a hierarchical nanostructure, modified polyaniline conductive nanoparticles (CPs) are used for enhancing the electric signal transmission capacity of the hydrogel evaporator, and the salt-resistant hydrogel solar evaporator capable of realizing seawater desalination and electric power generation is prepared by adopting a simple and convenient method.

The invention relates to the technical field of gas adsorption materials, in particular to a heteropoly acid modified GO-coated MMT composite material and a preparation method and application thereof. The preparation method comprises the following steps: ultrasonically dispersing graphite oxide in deionized water, stirring for 2-4 hours to obtain a graphite oxide solution, adding methylcyclopentadienyl manganese tricarbonyl into ethylene glycol, and stirring for 12-24 hours to obtain an MMT solution; pouring the graphite oxide solution into the MMT solution, reacting at 150-180 DEG C for 8-12 hours, washing, and freeze-drying to obtain GO-coated MMT composite hydrogel; and adding the GO-coated MMT composite hydrogel into deionized water, then adding heteropoly acid, stirring at 60-80 DEG C for 8-12 hours, and carrying out suction filtration and washing to obtain the heteropoly acid modified GO-coated MMT composite material. According to the heteropolyacid modified GO (at) MMT composite material disclosed by the invention, a complex with strong electrostatic adsorption force can be formed on the surface of GO (at) MMT by introducing heteropolyacid, and meanwhile, Bronsted acid sites and Lewis acid sites are increased, so that the adsorption performance is enhanced, and low-concentration ammonia gas adsorption is realized.

Titanium dioxide (TiO2) forms the basis of devices for applications including sensing devices, solar cells, photo-electrochromics, and photocatalysis. Such devices exploit different phases of TiO2 within such devices and accordingly it would be beneficial to have an amorphous TiO2 precursor which allows crystalline phase spatial patterning, for the crystallization of the amorphous TiO2 precursor to be triggered at low energies, and with the crystalline phase controllable at room-temperature without necessitating complex handling whilst providing TiO2 phases that are stable over a prolonged period of time. Accordingly, there are provided processes for providing a TiO2 precursor and controlling the conversion of the TiO2 precursor from amorphous-to-anatase, amorphous-to-rutile, amorphous-to-mixture of anatase / rutile or from amorphous-to-anatase-to-rutile in a simple and efficient manner.

This invention proposes a patterned PEDOT:PSS hydrogel based on electrochemical pulse deposition and its preparation method. The preparation apparatus includes an electrolytic cell, an electrochemical workstation, a substrate, a conductive layer, and a sacrificial metal layer. The electrolytic cell contains a PEDOT:PSS aqueous solution. The conductive layer is connected to the working electrode of the electrochemical workstation. Under the excitation of the electrochemical workstation, the sacrificial metal layer forms metal cations, which electrostatically adsorb PEDOT:PSS in the PEDOT:PSS aqueous solution, ultimately forming a patterned shape on the conductive layer using the sacrificial metal layer as a template. This invention achieves thickness control of the patterned PEDOT:PSS hydrogel by adjusting various deposition parameters. The preparation process is simple, low-cost, and highly practical, fully realizing the patterning of PEDOT:PSS hydrogels.

The application discloses a preparation method of a progesterone vaginal gel, relates to the technical field of gynecological medicine preparation, and realizes the preparation method of the progesterone vaginal gel by using a preparation device of the progesterone vaginal gel. The preparation device of the progesterone vaginal gel comprises a mixing kettle, a top plate is fixedly arranged at the top of the mixing kettle, a driving scraping mechanism is arranged inside the mixing kettle and at the inner side of the top plate, an oil phase preparation mechanism is arranged outside the driving scraping mechanism, a water phase preparation mechanism is arranged at the bottom outside the oil phase preparation mechanism, a premix preparation mechanism is arranged at the top outside the oil phase preparation mechanism, and the top plate and the water phase preparation mechanism are jointly provided with a driving supporting mechanism. The application can effectively shorten the transfer time of the premix and the oil phase, thereby improving the preparation efficiency of the gel product, and the residual oil phase can be recycled, thereby avoiding the waste of the oil phase and guaranteeing the quality of the gel product.

The invention relates to recyclable ionic gel with a microphase separation structure as well as a preparation method and application of the recyclable ionic gel, and belongs to the technical field of composite gel materials. The method comprises the following steps: dissolving an ionic liquid monomer containing unsaturated double bonds in an ionic liquid solvent, and uniformly mixing; and carrying out irradiation treatment on the solution to prepare the recyclable ionic gel with microphase separation. Inside the gel, alkyl chains tend to aggregate to reduce contact with a polar ionic environment. Non-polar alkyl chains are gathered to form an alkyl-rich region, anions and cations form an ion-rich region, and micro-phase separation is synergistically induced. The ionic gel prepared by the invention has the characteristics of excellent mechanical property, recoverability and the like, and effectively solves the problems of poor mechanical property and the like of the traditional non-covalent ionic gel.

The invention relates to a high-strength high-temperature-resistant cementing material and a preparation method thereof, belongs to the technical field of cementing materials, and solves the problems of complex preparation process, low strength, easiness in bleeding and segregation, poor high temperature resistance and the like of the traditional cementing material. The preparation method comprises the following steps: stirring silica sol to uniformly disperse the silica sol; adding a silane coupling agent into the silica sol, and stirring until the materials are uniformly mixed to obtain a first mixed solution; adding the first enhanced raw material powder into the first mixed solution, and stirring until the first enhanced raw material powder is uniformly dispersed to obtain a second mixed solution; adding the second enhanced raw material powder into the second mixed solution, and stirring until the second enhanced raw material powder is uniformly dispersed to obtain a third mixed solution; adding a gel accelerator into the third mixed solution, and stirring to obtain sol; after the sol is molded, standing and aging are conducted, and gel is obtained; and drying the gel in a drying oven to obtain the high-strength high-temperature-resistant cementing material. The high-strength high-temperature-resistant cementing material prepared by the method disclosed by the invention is good in integrity, excellent in mechanical property and good in high temperature resistance and freezing resistance.

The application provides a composite biochar material with a gradient pore structure and a preparation method thereof. The composite biochar material is obtained by high-temperature carbonization of a composite gel with a gradient pore structure, the composite gel with the gradient pore structure is obtained by centrifugal separation and directional photocuring, and the composite gel is composed of pre-activated dolomite and alkali pretreated soybean dregs. In the application, the density difference between the soybean dregs and the dolomite forms a gradient distribution of a layered structure during centrifugation, and the layered structure is solidified to maintain the gradient pore structure of the material in the subsequent carbonization process.

The invention relates to the field of catalysts, in particular to a multi-scale microporous catalyst and a preparation method thereof.Firstly, diffusion and mass transfer of reactants and products are greatly accelerated through a through multi-stage pore network of the catalyst, the exposure degree of active sites is remarkably increased, and therefore the catalytic efficiency is improved; secondly, according to the system, the pore structure and the material composition can be optimized and combined according to the characteristics of different catalytic reactions, such as reactant sizes, reaction media and conditions, so that the system can be widely adapted to various reaction types such as a gas state and a liquid state, and covers most of catalytic scenes; furthermore, various preparation methods can be flexibly combined, especially the 3D printing technology is applied, so that design customization of multi-scale pores and the appearance of the catalyst is realized, and the preparation difficulty of a complex structure is greatly reduced; and finally, reasonable framework material selection and multistage pore design synergistically enhance the catalytic effect and inactivation resistance of the catalyst, so that the service life of the catalyst is prolonged compared with that of a traditional catalyst.

The invention relates to polyvinyl alcohol polynitrogen isoacrylamide cellulose hydrogel with an anisotropic structure as well as a preparation method and application of the polyvinyl alcohol polynitrogen isoacrylamide cellulose hydrogel, and belongs to the technical field of water catching materials. The preparation method of the hydrogel comprises the following steps: S1, adding polyvinyl alcohol, glutaraldehyde and lithium chloride into deionized water to obtain a mixed solution A; s2, adding the cellulose nanocrystal powder into deionized water to obtain a cellulose nanocrystal dispersion liquid; s3, adding N-isoacrylamide and N, N-methylene bisacrylamide into deionized water, so as to obtain a mixed solution B; s4, adding the mixed solution A and the cellulose nanocrystal dispersion solution into the mixed solution B, and reacting to obtain a mixed solution C; s5, ammonium persulfate, hydrochloric acid and tetramethylethylenediamine are added into the mixed solution C, freezing, low-temperature crosslinking and unfreezing are conducted, and then freezing-unfreezing circulation crosslinking is conducted; and finally, taking out, unfreezing and dialyzing. The hydrogel provided by the invention has a highly anisotropic structure and regular vertical pore channels.

The invention relates to a preparation method of stepped cross-linked myofibril-pectin core-shell hydrogel microspheres, which comprises the following steps: preparing a myofibril protein dispersion liquid and a pectin solution by using a phosphate buffer solution containing NaCl as a solvent; preparing an anthocyanin stock solution by taking a phosphate buffer solution as a solvent; mixing the three components under an ice bath condition, and then reacting at 2-5 DEG C for 1-3 hours; 2) dropwise adding the reaction solution obtained in the step 2) into a continuously stirred CaCl cross-linking solution at 2-5 DEG C, standing and curing after dropwise adding, and washing with distilled water to obtain single-layer hydrogel microspheres with uniform particle size and smooth surface; and naturally draining the surface moisture of the single-layer hydrogel microspheres, soaking the single-layer hydrogel microspheres in a freshly prepared 1-4% pectin solution for 20-40 seconds, then taking out the single-layer hydrogel microspheres, transferring the single-layer hydrogel microspheres into another CaCl crosslinking solution, and continuing crosslinking for 10-20 minutes to form a compact shell structure. And after the reaction is completed, washing with distilled water. The core-shell hydrogel microspheres can be used for detecting volatile ammonia, monitoring and indicating pork freshness and the like.

The present invention is in the technical field of additive manufacturing and provides a continuous method for producing planar, porous hydrogels and structures. The present invention also provides an apparatus for the continuous production of hydrogels.

The application relates to the field of microspheres, and particularly relates to a graphene microsphere and a preparation method thereof, and the preparation method comprises a droplet preparation step of graphene microsphere slurry, wherein the droplet of the graphene microsphere slurry is dropped through a dropper, the bottom of the dropper is provided with a droplet size adjusting module, the droplet size adjusting module comprises multiple layers of adjusting units, each layer of adjusting unit is provided with a forming droplet hole, the forming droplet holes on the multiple layers of adjusting units are vertically opposite, the forming droplet holes on each layer of adjusting unit gradually decrease in diameter from top to bottom, and the inner walls of the multiple forming droplet holes form a ladder shape; each layer of adjusting unit comprises two adjusting plates which can slide horizontally, the end portions of the two adjusting plates are opposite, the opposite end portions of the two adjusting plates are provided with arc-shaped grooves, and the arc-shaped grooves are combined into the forming droplet hole when the two adjusting plates abut against each other; and the size of the droplet is adjusted by controlling the opening and closing states of each layer of adjusting unit. The scheme is convenient for adjusting the size of the prepared microspheres and is simple and convenient to operate.

The embodiment of the application provides a 3D printing hydrogel evaporator with temperature response and a preparation method thereof, and belongs to the technical field of seawater desalination.The 3D printing hydrogel evaporator comprises: an upper layer of the evaporator, which is a photothermal response layer, and the photothermal response layer comprises N-isopropyl acrylamide as a temperature-sensitive polymer; a lower layer of the evaporator, which is a hydrophilic layer configured to provide moisture for the upper layer of the evaporator, wherein the upper layer of the evaporator and the lower layer of the evaporator are adjusted in spatial structure through a 3D printing technology and integrally cured and formed.The 3D printing hydrogel evaporator prepared by the application has excellent photothermal conversion performance and water evaporation efficiency, the electrolyte property of sodium alginate and the Marangoni effect caused by the spatial structure of the internal design of the device, so that the device has super-high salt rejection performance, and is suitable for seawater desalination, sewage treatment and other applications.

The application discloses a preparation method of an ion-thermal sensitive composite gel for efficiently extracting nicotine. The method comprises the following steps: physically mixing boron nitride (BN) and anhydrous citric acid, ball milling, washing, centrifuging and drying to obtain boron nitride nanosheets. Then, the boron nitride nanosheets and ionic liquid are reacted under a nitrogen atmosphere for 24 h to obtain ionic liquid-boron nitride nanosheets (IL-BNNs). The IL-BNNs are dispersed into a monomer solution, a crosslinking agent is added after the formation of the gel, and then tetramethylethylenediamine and ammonium persulfate are added and stirred in an ice bath. The mixed system is transferred into a mold to react for 12-24 h to obtain the ion-thermal sensitive composite gel. The application forms dense nicotine binding sites in the interior of the composite material by using ionic liquid, so that the adsorption-desorption performance of the material to nicotine is enhanced. Meanwhile, the desorption performance of the material is strengthened by using the thermal conductivity of boron nitride and the phase change characteristics of the gel, so that the nicotine extraction process is simplified, and the amount of eluent in the nicotine recovery process is reduced.

The application discloses a preparation method of a photocatalyst synergistic slow-release odor-removing gel and belongs to the technical field of air purification materials. Through the synergistic effect of photocatalysts, antibacterial and mildew-proof components and slow-release structures, the air purification effect is achieved. Specifically, first, add a Leishi photocatalyst formaldehyde-removing liquid, activated carbon and a gelling agent into a reaction kettle to perform a hydrothermal reaction to obtain a solution A; then, add a surfactant, antibacterial and mildew-proof formaldehyde-removing powder HNF-001 and a synergist into the solution A, perform heat preservation and stirring to obtain a solution B; finally, close the heating and continue to stir, add a humectant into the solution B and perform capping to obtain the photocatalyst synergistic slow-release odor-removing gel. Through the synergistic proportioning of the Leishi photocatalyst formaldehyde-removing liquid, the antibacterial and mildew-proof formaldehyde-removing powder HNF-001 and the synergist, in combination with a slow-release gel structure and a flow guide design, the photocatalyst synergistic slow-release odor-removing gel realizes the multi-effect integration of formaldehyde decomposition, antibacterial and mildew-proof and odor absorption and decomposition. The photocatalyst synergistic slow-release odor-removing gel has long-acting slow-release and environmental adaptability and is suitable for air purification in household and vehicle-mounted scenes.

The present disclosure provides systems and methods for making a hydrogel comprising a cell, cell nucleus, or one or more components derived from a cell or cell nucleus. A method for making a hydrogel may comprise providing a cell or cell nucleus, a first polymer, wherein the first polymer comprises a plurality of first crosslink precursors, each of the plurality of first crosslink precursors comprising an azide group; providing a second polymer, wherein the second polymer comprises a plurality of second crosslink precursors, each of the plurality of second crosslink precursors comprising an alkyne group; and crosslinking the first polymer and the second polymer via a reaction between a first section of the first crosslink precursors and a second section of the second crosslink precursors, thereby providing the hydrogel comprising the cell or cell nucleus.

The application discloses a magnetic carbon nanomaterial hydrogel, a preparation method thereof and seawater desalination application. The magnetic carbon nanomaterial hydrogel comprises a hydrogel, carbon nanomaterial and magnetic nanoparticles distributed in the hydrogel. The preparation method comprises the following steps: 1) mixing the hydrogel, the carbon nanomaterial and the magnetic nanoparticles to obtain a mixed solution; 2) freezing the mixed solution obtained in the step 1) to obtain a frozen product; 3) thawing the frozen product obtained in the step 2); 4) repeating the freezing in the step 2) and the thawing in the step 3) to obtain the magnetic carbon nanomaterial hydrogel. The magnetic carbon nanomaterial hydrogel prepared by the application can realize dynamic compression self-drainage through geometric deformation of an elastic magnetic evaporation body under the action of a magnetic field, and can improve the water evaporation rate of a photothermal interface water evaporation body.

The present application relates to a kind of gel microspheres containing nanometer silicon, the gel microspheres include 1-10wt% sodium alginate, 0.01-20wt% nanometer silicon, 1-10wt% crosslinking agent.The gel microspheres of the present application can effectively slow down the hydrogen production rate of nanometer silicon while not too much loss of total hydrogen production, extend the hydrogen production time.In addition, the gel microspheres can effectively prevent nanometer silicon from diffusing in water body, prevent nanometer silicon from directly contacting biology and producing toxic effect, and safely repair aquatic ecosystem.

The invention relates to a gamma-polyglutamic acid-chitosan composite hydrogel preparation device which comprises a base, a constant-temperature box is arranged above the base, supporting plates are fixedly connected to the front side face and the rear side face of the constant-temperature box, the supporting plates are fixedly connected with the base, a movable bottom plate is slidably connected between the two supporting plates, and the movable bottom plate is fixedly connected with the base. A movable bottom plate is arranged on the left side of the thermotank, a push-pull assembly is arranged on the right side of the movable bottom plate, a placement frame fixedly connected with the movable bottom plate is arranged in the thermotank, a mold is arranged in the placement frame, an electric heating pipe and a temperature sensor are fixedly connected to the inner wall of the thermotank, and a PLC is fixedly connected to the left side face of the thermotank. According to the preparation device of the gamma-polyglutamic acid-chitosan composite hydrogel, disclosed by the invention, the steps of mixing, filtering and standing and gelling by a mold can be integrally treated, and workers do not need to transfer the steps to other equipment for multiple times, so that the working intensity of the workers is reduced.

This invention is a divisional application of Chinese invention patent application No. 202310608706.5, filed on May 28, 2023, entitled "Slow-Release Hydrogen Production Material Containing Nano-Silicon and Its Application in Aquatic Ecosystem Restoration". This invention discloses a slow-release hydrogen production material containing nano-silicon and its preparation method, belonging to the field of environmental protection technology. The invention involves sterilizing a 2-5% sodium alginate solution, cooling it to room temperature, adding 0.3-0.5% wt of nano-silicon to the sodium alginate solution, and stirring at 500-600 r / min at room temperature for 30-60 min to obtain a nano-silicon sodium alginate solution. The prepared nano-silicon sodium alginate solution is then added dropwise at a volume ratio of (1-5):1 to a 2-5% CaCl2 solution at a rate of 1 drop / second, and allowed to stand for 5-10 min to obtain the final product. The layered structure of this material allows the nano-silicon material to be uniformly distributed and stably produce hydrogen within the sphere.

This invention belongs to the field of reagent kit technology and discloses a Papain-CuSO4@SiO2 nanozyme. The preparation steps of the nanozyme are as follows: 10 mg / mL of the solution is added while vigorous stirring. ‑1 Papain was added dropwise to a 10 mM CuSO4 solution, stirred, and then nano-SiO2 microspheres were added. The mixture was then sonicated, the pH was adjusted, and the solution was stirred in a water bath. The mixture was then filtered through a membrane to obtain the nanozyme. The nanozyme of this invention is simple to prepare, low in cost, and operates under mild reaction conditions, making it less susceptible to environmental interference and easy to scale up for production. Compared with existing nanozyme synthesis methods, this invention uses inorganic materials such as CuSO4 and SiO2 as precursors, reducing production costs. Furthermore, the nanozyme of this invention is easy to surface modify, enabling rapid and visual detection of solanine content in potatoes.

The application discloses a kind of preparation and application of light evaporation-light catalysis coupling hydrogel, using preparation hydrogel is placed on the surface of various sewage (seawater, methylene blue solution, tetracycline solution), carry out light evaporation-light catalysis coupling process under solar drive to handle sewage, and collect evaporation water and concentrated water, determine water quality change situation.The application proposes a simple one-pot solvothermal method to synthesize MWCNTs@NH2-MIL-88B(Fe) composite material, and then load it into a double network hydrogel composed of PVA and gelatin.Using the high light absorption capacity and superior electron transfer ability of MWCNTs, combined with the unique Fenton effect of NH2-MIL-88B(Fe) (NM88B), the hydrogel with rich pore structure can simultaneously perform photocatalytic degradation and photovoltaic evaporation processes, ultimately achieving the removal of clean water and organic pollutants.

The invention belongs to the technical field of gel, and provides nonionic eutectic solvent / chitosan frozen gel as well as a preparation method and application thereof. The method comprises the following steps: mixing thymol and nonanoic acid to obtain a nonionic eutectic solvent; mixing a non-ionic deep-eutectic solvent and a chitosan solution, and performing ultrasonic treatment to obtain a reaction solution; and mixing the reaction solution with a trialdehyde phloroglucinol aqueous solution, and sequentially carrying out vortex treatment, cross-linking and freeze drying to obtain the nonionic eutectic solvent / chitosan frozen gel. The NIDES / CS frozen gel composite material is constructed by adopting an in-situ cross-linking method, trialdehyde phloroglucinol is taken as a cross-linking agent, phenol NIDES is taken as an extraction material, and the phenol NIDES is embedded into a CS matrix through intermolecular interaction force by utilizing the surface characteristic that CS is rich in-OH, so that the aims of better adsorbing an analyte and more conveniently separating from a sample solution are achieved.

This invention relates to a moisture-generating device, its preparation method, and its application, belonging to the field of moisture-generating technology. The moisture-generating device of this invention includes a flexible substrate, an upper electrode, a lower electrode, and a power-generating active material; the power-generating active material is disposed between the upper electrode and the lower electrode; the power-generating active material has a core-sheath structure, with the sheath layer at the edge being a cross-linked hydrogel structure, and the core layer being a hydrogel precursor solution; the sheath layer restricts the shape of the hydrogel precursor solution in the core layer and is in contact with the atmosphere. The core-sheath structure of the power-generating active material is prepared by a one-step ultraviolet light-induced polymerization / gelation method. The moisture-generating device provided by this invention ensures stable and continuous power output and significantly improved moisture-to-electricity conversion efficiency. Furthermore, its miniaturized design offers significant advantages such as compact structure and ease of integration, and its convenient assembly facilitates large-scale production.

The application discloses a gel preparation preparation method for improving cervical HPV infection and establishing a preventive barrier, relates to the technical field of gel preparation, and aims to solve the technical problems that the existing treatment methods are mostly focused on treating infected patients, and there are obvious deficiencies in the prevention of HPV infection, especially in establishing an effective preventive barrier in uninfected people, including: a crushing mechanism, which is mainly used for crushing raw materials, the crushing mechanism comprises a cabinet body, a cabinet door is arranged on one side of the cabinet body, a crushing barrel is arranged in the cabinet door, and a rotating motor matched with the crushing barrel is arranged on the cabinet door; a reverse osmosis mechanism, which is mainly used for controlling the osmotic pressure of the gel. The application has the advantages of activating local immune cells of the cervix, promoting cytokine secretion, enhancing the immune clearance ability of the body to HPV virus, providing long-acting preventive protection for the cervix, and reducing the risk of HPV infection.

Compositions and methods for hydrogel formation, such as microcapsule hydrogel shell formation, are disclosed herein. Methods and compositions herein yield microcapsule populations having predictable microcapsule properties such as shell widths and microcapsule diameters, and may comprise bioparticles that may be analyzed using reactions performed in series. Approaches using biocompatible catalysis of hydrogel formation, as well as uncatalyzed hydrogel crosslinking approaches, are disclosed herein.