Abstract:
A porous, molecularly imprinted polymer and a process for its preparation are described. The porous, molecularly imprinted polymer is characterised in that it is obtainable by providing a porous silica; attaching a molecular template to the surface of the porous silica; filling the pores of the porous silica with a polymer; removing the silica and the molecular template, thereby leaving a porous, molecularly imprinted polymer. The process is characterised by the above defined process steps. Also described are a porous polymer vesicle and its preparation with the same features as defined for the porous, molecularly imprinted polymer and its preparation, except for the lack of the molecular template and thus the lack of the molecular imprint in the porous polymer.
Abstract:
Various embodiments disclosed relate to pore inducers and porous abrasive forms made using the same. In various embodiments, the present invention provides a method of forming a porous abrasive form including heating an abrasive composition including pore inducers to form the porous abrasive form. During the heating the pore inducers in the porous abrasive form reduce in volume to form induced pores in the porous abrasive form.
Abstract:
Provided is an oriented multilayer porous film comprising at least one layer comprising: a heat, solvent, and degradation resistant matrix polymer; a plurality of interconnecting pores; and a porosity less than 90%. The film is made by a dry and/or wet method, with its multilayer structure constructed by coextrusion, lamination, and coating. The film of this disclosure finds a wide range of applications as a permselective medium for use in energy harvesting and storage, filtration, separation and purification of gases and fluids, CO2 and volatile capture, electronics, devices, structural supports, packaging, labeling, printing, clothing, drug delivery systems, bioreactor, and the like. The film is preferably used as a separator of lithium-ion, lithium-sulfur, lithium-air, metal-air, and nonaqueous electrolyte batteries.
Abstract:
Provided are a varnish for porous polyimide film production, providing an unburned composite film that is less likely to have a sea-island structure, and a method for producing a porous polyimide film using the same. The varnish according to the present invention comprises a resin including polyamide acid and/or polyimide, fine particles, and a solvent, and has a fine particle content of not less than 65% by volume relative to the total of the resin and the fine particles and a viscosity at 25° C. of not less than 550 mPa·s. Preferably, the varnish further comprises a dispersant. The method for producing a porous polyimide film according to the present invention comprises: forming an unburned composite film using the varnish; burning the unburned composite film to obtain a polyimide-fine particle composite film; and removing the fine particles from the polyimide-fine particle composite film.
Abstract:
The present document provides details of a nanostructured material defined by an anodized alumina having a nanostructure with transverse pores that pass through and connect longitudinal pores grown on an aluminum substrate. This document also describes the process for producing said nanostructured material and the possible use thereof as a template or mould for obtaining nanostructures formed by nanowires, which are generated in the cavities or pores of the aforementioned nanostructure of the nanomaterial of the invention. Likewise, this document details the use of the nanostructured anodized alumina material as a mould for producing nanostructures.
Abstract:
A method of making a nanoporous structure comprising a matrix and at least one nanosized pore within the matrix, wherein the method comprises contacting at least a portion of a templated matrix with an acid t solution, wherein the templated matrix comprises a matrix that selected from the group consisting of an organic polymer, a sol-based ceramic, an inorganic salt, an organoaluminate, and combinations thereof, and one or more nanosized templates within the matrix, wherein each nanosized template comprises a core that comprises an inorganic oxide, to dissolve at least a portion of the inorganic oxide of at least one of the cores and form the at least one nanosized pore within the matrix thereby forming the nanoporous structure.
Abstract:
The present invention provides a method for producing a three-dimensional product having a nanoporous surface in which the pore density, pore size or pore size distribution can be easily and readily controlled. The invention combines two techniques: a method for producing a three-dimensional product in which a yarn is knitted or woven to finish into an arbitrary three-dimensional shape, and a method for transforming a surface consisting of a material in which nanoparticles are dispersed in a matrix to a nanoporous surface by immersing the surface in a liquid which dissolves the nanoparticles but does not dissolve the matrix.
Abstract:
(Problems) The object of the present invention is to provide an inverted-opal structure which is excellent in biodegradability, biocompatibility, and pH responsiveness, has specific light reflection property due to three-dimensionally-ordered-pores formed therein, is capable of releasing a drug autonomously and intermittently by responding rapidly to pH change, and is capable of measuring the drug-release associated with its biodegradation by an optical means rapidly in a simple and easy way; a method for manufacturing the inverted-opal structure; a medical implant comprising the inverted-opal structure; a method for enlarging the pore diameter; and a method for measuring the release-amount of a drug held in the inverted-opal structure.(Means for Solving Problems) The present invention provides a biodegradable inverted-opal structure comprising an aliphatic polyester; and a method for manufacturing a biodegradable inverted-opal structure, comprising the steps of: (1) producing a colloidal crystal from a silica particle or a polystyrene particle; (2) immersing the colloidal crystal in a solution including a monomer from which the aliphatic polyester is formed; (3) thermally-polymerizing the monomer under a pressurized condition in order to obtain a composition of the colloidal crystal coated with the aliphatic polyester; and (4) removing the silica particle from said composition by etching, or removing the polystyrene particle from said composition by eluting the polystyrene particle with an organic solvent in order to obtain the biodegradable inverted-opal structure.
Abstract:
A porous, molecularly imprinted polymer and a process for its preparation are described. The porous, molecularly imprinted polymer is characterized in that it is obtainable by providing a porous silica; attaching a molecular template to the surface of the porous silica; filling the pores of the porous silica with a polymer, removing the silica and the molecular template, thereby leaving a porous, molecularly imprinted polymer. The process is characterized by the above defined process steps. Also described are a porous polymer vesicle and its preparation with the same features as defined for the porous, molecularly imprinted polymer and its preparation, except for the lack of the molecular template and thus the lack of the molecular imprint in the porous polymer.
Abstract:
Ordered, monodisperse macroporous polymers, their corresponding ordered, monodisperse colloids, and methods of preparing them are disclosed. The methods use an ordered, monodisperse colloidal template to define the polymer pore morphology, which in turn acts as a mold for the growth of a new ordered, monodisperse colloid. The macroporous polymer may be prepared with either spherical or ellipsoidal pores from a wide variety of polymeric systems. The new ordered, monodisperse colloid may be grown from a wide variety of materials including ceramics, semiconductors, metals and polymers. These materials are potentially useful in optical, micro-filtering and drug delivery applications.