46results about How to "Improve hydrophilicity and hydrophobicity" patented technology

The invention provides a vaccine preparation as well as a production method and the use of the vaccine preparation. The vaccine preparation comprises a vaccine carrier and an antigen component, wherein the vaccine carrier is obtained by performing hydrothermal conversion on microorganisms. The vaccine preparation is obtained by compounding the vaccine carrier obtained by performing hydrothermal conversion on microorganisms with the antigen component. According to the vaccine preparation, the vaccine carrier material prepared by virtue of the hydrothermal reaction is optimized in properties such as porosity, hydrophilcity and hydrophobicity and surface immune related ligand density, and therefore, when the vaccine carrier material is compounded with the antigen component, the antigen loading efficiency is improved, the vaccine preparation is enabled to have a strong immune activation effect, the immunogenicity of the loaded antigen is effectively enhanced, and the immunotherapy and prevention of a specific disease are realized by virtue of specific immune response of an organism to the antigen. Besides, the vaccine preparation is wide in raw material source, and has universality in vaccine construction; and as a result, a plurality of vaccine preparations to different diseases can be constructed.

The invention discloses a polyamide composite fiber with an intelligent surface and its preparation method and application. The polyamide composite fiber includes a polyamide fiber matrix and particles covering it. In this way, covering the particle on the surface of the fiber matrix can improve fiber The roughness, and then improve the hydrophilic and hydrophobic properties of the fibers, so that the poor dimensional stability of polyamide fibers caused by strong hygroscopicity is improved. The preparation is carried out as follows: first obtain the polyamide fiber matrix with reactive groups on the surface, then obtain particles with reactive functional groups, and finally mix the polyamide fiber matrix with the particles for reaction to obtain the polyamide composite fiber. The polyamide composite fiber of the present invention can be used in smart textiles, non-woven fabrics, porous membranes, composite materials and oil-water separators, preferably smart textiles and oil-water separators.

The invention discloses a low-concentration particle-stabilized switching Pickering emulsion and a preparation method thereof. The switching Pickering emulsion is obtained by stirring and emulsification of an oil phase and a water phase at 20,000-30,000 r / min; the oil phase includes modified nano-silica particles and oil, and the water phase includes nano-silica particles and water; in the switch Pickering emulsion, the water phase is 30wt% to 70wt%, the oil phase is 70wt% to 30wt%, the nano-silica particles are 0.005wt% to 0.5wt%, and the modified The nano-silica particles are 0.005wt% to 0.5wt%; the modified nano-silica particles are nano-silica particles grafted with carboxyl groups, and the nano-silica particles themselves have no surface activity. Moreover, the Pickering emulsion has pH stimuli responsiveness, and has potential application prospects in realizing the efficient separation of oil and water.

The invention relates to an ionic liquid composite material for separating ephedrine in pinellia ternata and a preparation method thereof and belongs to the technical field of separation of natural products. The ionic liquid composite material and the preparation method thereof provided by the invention have the beneficial effects that the ionic liquid composite material takes a silica gel material as a substrate and is prepared by firstly performing functional group modification on the surface of the silica gel material through ionic liquid and then compounding a molecularly-imprinted polymerlayer on a functional group of the silica gel material; the ionic liquid silica gel-imprinted polymer composite material takes the silica gel material as the substrate and has good acid resistance and mechanical strength; then the group modification is performed on the surface through the ionic liquid, and the adsorption efficiency can be improved by utilizing the excellent solubility, the hydrophobicity and various chemical forces of the ionic liquid; finally, not only is the surface area of the compounded imprinted polymer material increased, but also the adsorption selectivity is greatly improved. The composite material is applied to the separation of a pinellia ternata extract, and the ephedrine can be subjected to highly-selective adsorption separation.