Abstract:
Compositions for forming porous materials and three-dimensional objects, including fibers, films and coatings made from the materials are provided. Also provided are methods for forming the porous objects from the compositions. The compositions include a solvent, a polymer binder that is soluble in the solvent, and solid particles that are insoluble in the solvent. The solid particles include water-soluble salt particles that can be selectively dissolved from objects made from the compositions to render the resulting structures porous.
Abstract:
The present invention concerns methods of treating systemic, regional, or local inflammation from a patient suffering or at risk of inflammation comprising administration of a therapeutically effective dose of a sorbent that sorbs an inflammatory mediator in said patient. In some preferred embodiments, the sorbent is a biocompatible organic polymer.
Abstract:
A rigid flow control device includes a porous rigid body having an outer surface and an inner surface. The body defines a flow path and is formed from a material operatively arranged with a surface energy less than that of the fluid for passively impeding an undesirable component of the fluid more than a desirable component of the fluid.
Abstract:
A method of manufacturing a flexible intrinsically antimicrobial absorbent porosic composite controlling for an effective pore size using removable pore-forming substances and physically incorporated, non-leaching antimicrobials. A flexible intrinsically antimicrobial absorbent porosic composite controlled for an effective pore size composited physically incorporated, high-surface area, non-leaching antimicrobials, optionally in which the physically incorporated non-leaching antimicrobial exposes nanopillars on its surface to enhance antimicrobial activity. A kit that enhances the effectiveness of the intrinsically antimicrobial absorbent porosic composite by storing the composite within an antimicrobial container.
Abstract:
The present invention provides for concentrated aqueous silk fibroin solutions and an all-aqueous mode for preparation of concentrated aqueous fibroin solutions that avoids the use of organic solvents, direct additives, or harsh chemicals. The invention further provides for the use of these solutions in production of materials, e.g., fibers, films, foams, meshes, scaffolds and hydrogels.
Abstract:
The present invention concerns methods of treating systemic, regional, or local inflammation from a patient suffering or at risk of inflammation comprising administration of a therapeutically effective dose of a sorbent that sorbs an inflammatory mediator in said patient. In some preferred embodiments, the sorbent is a biocompatible organic polymer.
Abstract:
A method for preparing a porous fluoropolymer precursor includes combining a fluoropolymer and a removable additive to form a composition, the removable additive having a thermal decomposition temperature greater than a sintering temperature of the fluoropolymer, compressing the composition to form a preform, and sintering the preform to form the porous fluoropolymer precursor. A method for preparing a porous fluoropolymer includes disposing the porous fluoropolymer precursor in a removing agent, contacting the removable additive with the removing agent, and removing, by the removing agent, the removable additive from the porous fluoropolymer precursor to form the porous fluoropolymer, wherein the porous fluoropolymer comprises a plurality of pores formed by removing the removable additive.
Abstract:
There are provided methods of producing a component incorporating a bioactive material. In one embodiment the method comprises: (a) using a screw extruder to mix a polymeric material (I) with a bioactive material (II) and melt the polymeric material (I); and (b) making a component by moulding; and wherein the polymeric material (I) is of a type which includes: (i) phenyl moieties; (ii) ketone moieties; and (iii) ether moieties. Also provided are components comprising a polymeric material and a bioactive material.
Abstract:
The present invention refers to a porous PEEK-type polymer article comprising a porous PEEK-type polymer structure and presenting at least a trimodal pore distribution. The invention describes a process for the production of said porous PEEK-type polymer article comprising: a) contacting a PEEK-type polymer with a composition comprising at least a organic solvent, b) heating at a temperature at which the PEEK-type polymer is dissolved, c) adding at least a porogen agent, d) cooling the mixture obtained in c) at a temperature at least equal or lower than the temperature at which the PEEK-type polymer precipitates, e) forming said cooled mixture into a shaped article, f) removing the organic solvent and the porogen agent, and g) recovering the PEEK-type polymer article.
Abstract:
Contact lenses with pores having high oxygen permeability and a manufacturing method thereof. The manufacturing method comprises the steps of uniformly mixing water-soluble salts and the formula of contact lenses having hydrophilic monomers to form a mixed formula; molding and forming the mixed formula to obtain contact lenses; dissolving and dialyzing the water-soluble salts by a water solution so as to form a plurality of pores with a predetermined diameter on a surface and in the interior of the contact lenses. The diameter of pore size has an allowable range between 0.03 μm and 0.05 μm such that the contact lenses with high oxygen permeability can be obtained.