摘要:
A polypeptide monolayer with a low surface potential and hydrophobicity. The polypeptide is composed of polypeptide molecules with a molecular weight of (1.48±0.2)×105 g/mol, a thickness of the monolayer is 6.2-9.0 nm, the exposure of primary amino groups on the surface of the monolayer is 9.5-15%, a Zeta potential of the polypeptide monolayer is (−3)−(−9) mV, and a contact angle of the monolayer is (61±1°)-(84±1°). The monolayer can be ultrathin, with a minimum thickness of only about 6.6 nm. The polypeptide monolayer can also be applied to the preparation of a biosensor, which is conductive to increase in limit of detection. The content of primary amino groups on the surface of polypeptide monolayer is conductive to controllability of further chemical modification and laying the foundation for achieving controllable grafting of polysiloxane and biological preparations in the later stage.
摘要:
Substrates comprising a light metal layer, an oxidized layer formed on the light metal layer, and a polymer hybrid layer formed on the oxidized layer; and methods for forming the substrates are disclosed.
摘要:
Reactive nanocomposites comprising a metal nanoparticle functionalized with one or more layers of self-assembled protein cages and methods of making the same. The reactive nanocomposites according to the present invention demonstrate improved reaction kinetics and enhanced exothermic behavior.
摘要:
Disclosed are a method for adjusting the pore size of a porous metal material and the pore structure of a porous metal material. The method comprises: permeating at least one element into the surface of the pores of the material to generate a permeated layer on the surface of the pores, so that the average pore size of the porous material is reduced to within a certain range, thus obtaining a pore structure of the porous metal material having the pores distributed on the surface of the material and the permeated layer provided on the surface of the pores.
摘要:
Disclosed is a polymer brush composite including a substrate, a solid layer disposed on the substrate and containing at least one of a metal or a metal oxide, and a plurality of polymer chains penetrating the solid layer in such a manner that one end of each of the polymer chains is disposed on the upper side of the substrate and the other end of each the polymer chains is exposed at a surface of the solid layer on an opposite side of the solid layer to the substrate. The polymer brush composite exhibits good adhesion between an organic polymer compound and an inorganic material and has the surface the organic polymer compound and the inorganic material uniformly coexist.
摘要:
An orthopaedic implant comprising a titanium substrate having silver deposited thereon, wherein the silver is operable to be eluted at a rate of at least 0.25 μg/cm2 24 h−1, for at least 14 consecutive days, in use. The invention also extends to a method of producing an orthopaedic implant and use of the same.
摘要:
Reactive nanocomposites comprising a metal nanoparticle functionalized with one or more layers of self-assembled protein cages and methods of making the same. The reactive nanocomposites according to the present invention demonstrate improved reaction kinetics and enhanced exothermic behavior.
摘要:
Disclosed are a method for adjusting the pore size of a porous metal material and the pore structure of a porous metal material. The method comprises: permeating at least one element into the surface of the pores of the material to generate a permeated layer on the surface of the pores, so that the average pore size of the porous material is reduced to within a certain range, thus obtaining a pore structure of the porous metal material having the pores distributed on the surface of the material and the permeated layer provided on the surface of the pores.
摘要:
A process for coating a metallic surface with an aqueous composition containing a) as the main component, an organic film former consisting of at least one synthetic resin, 70 to 100 wt. % of the content of synthetic resin(s) in the organic film former comprising at least one water-soluble or/and water-dispersible synthetic resin in the form of polymers, copolymers, block copolymers or/and graft copolymers based on synthetic resins selected from the group consisting of polycarbonate, polyurethane, ionomer, poly(meth)acrylate, polyester, polyether or/and polystyrene, the content of polycarbonate and polyurethane being at least 10 wt. % each, at least one long-chain alcohol as film-forming aid for the organic film former, a crosslinker, a lubricant, and a substance based on silane, silanol or/and siloxane or/and at least one inorganic compound in particle form with an average particle diameter measured on a scanning electron microscope in the range from 0.005 to 0.3 μm, and optionally at least one organic corrosion inhibitor, at least one organic solvent or/and at least one additive. The metallic surface is brought into contact with the aqueous composition and a polymeric film is formed on the metallic surface with a film thickness in the range from 0.01 to 10 μm. The aqueous composition and coated products are also contemplated.
摘要:
The invention concerns a process for coating a metallic surface with an aqueous composition, wherein in addition to water the composition contains a) as the main component, an organic film former consisting of at least one synthetic resin, 70 to 100 wt. % of the content of synthetic resin(s) in the organic film former comprising at least one water-soluble or/and water-dispersible synthetic resin in the form of polymers, copolymers, block copolymers or/and graft copolymers based on synthetic resins selected from the group consisting of polycarbonate, polyurethane, ionomer, poly(meth)acrylate, polyester, polyether or/and polystyrene, the content of polycarbonate and polyurethane being at least 10 wt. % each, b) at least one long-chain alcohol as film-forming aid for the organic film former, c) at least one crosslinker, d) at least one lubricant, and e) at least one substance based on silane, silanol or/and siloxane or/and at least one inorganic compound in particle form with an average particle diameter measured on a scanning electron microscope in the range from 0.005 to 0.3 μm, and f) optionally at least one organic corrosion inhibitor, at least one organic solvent or/and at least one additive, wherein the metallic surface is brought into contact with the aqueous composition and a polymeric film is formed on the metallic surface with a film thickness in the range from 0.01 to 10 μm. The invention also concerns a corresponding aqueous composition.