Abstract:
A vascular graft, comprising a biodegradable scaffold comprising: a biodegradable polyester electrospun tubular core; a biodegradable polyester outer sheath surrounding the biodegradable polyester tubular core; and a biodegradable poly(lactide) copolymer adhesive composition (i) disposed between the polyester electrospun tubular core and the polyester outer sheath, (ii) disposed between the polyester electrospun tubular core and the polyester outer sheath and on an outer surface of the polyester outer sheath, (iii) or disposed on an outer surface of the polyester outer sheath.
Abstract:
A process of imbibition drawing is improved by a pretreatment that preferably involves straining an undrawn filament bundle, or other elongated shaped undrawn or partially drawn synthetic polymeric article, while wetted with a cracking agent, before incorporating a desired additive by imbibition drawing, thereby increasing the imbibition capacity of the article, and improved articles incorporating such additives. Alternatively or in addition the pretreatment involves polarizing irradiation, before imbibition drawing.
Abstract:
Catalytically activated carbon fibers and methods for their preparation are described. The activated carbon fibers are engineered to have a controlled porosity distribution that is readily optimized for specific applications using metal-containing nanoparticles as activation catalysts. The activated carbon fibers may be used in all manner of devices that contain carbon materials, including but not limited to various electrochemical devices (e.g., capacitors, batteries, fuel cells, and the like), hydrogen storage devices, filtration devices, catalytic substrates, and the like.
Abstract:
Filtration membrane comprising polymeric nanofibers and/or microfibers attaching dendrimer component presenting reactive sites selective for chemicals to be filtered, and related nanofibers and microfibers, composite materials, compositions, methods and system.
Abstract:
Die Erfindung betrifft ein Verfahren und eine Vorrichtung zur Herstellung von synthetischen Grasfasern für Kunstrasen. Hierzu wird in einem Extrusionsprozess eine Vielzahl aus einer zerteilten Folie gebildete Bänder oder eine Vielzahl einzelner extrudierter Monofilamente aus einem Polymermaterial erzeugt. Die Bänder oder Monofilamente werden anschließend verstreckt und einzeln oder als ein Faserbündel zu Spulen aufgewickelt. Um insbesondere neben den visuellen Eigenschaften auch die physischen Eigenschaften der synthetischen Grasfasern zu beeinflussen, ist erfindungsgemäß vorgesehen, dass die Oberflächen der Bänder oder Monofilamente vor oder nach dem Aufwickeln in ihrer Rauigkeit geändert werden. Hierzu weist die erfindungsgemäße Vorrichtung eine Behandlungseinrichtung auf, deren Mittel zur Änderung der Oberflächenrauigkeit der Bänder oder Monofilamente geeignet sind.
Abstract:
The present invention relates to a tapered filament prepared from bio-based biologic-based material and a method for producing same. The present invention generally provides a method for producing a tapered filament, comprising the following steps of: a) providing filaments; b) providing a treating solution to treating tank; c) immersing the filaments in step a) into the treating solution, using auxiliary means such as mechanical stirring and/or cycling, or ultrasound energy for treating agent for enhancing effects of tapering, in which during step c), the depth of the filaments immersed in the treating agent varies with time.
Abstract:
The invention relates to the method for deposition of functional layer of polymeric nanofibres on a surface of a substrate, at which on the surface of substrate an auxiliary layer in the form of nanofibres and/or nanoparticles and/or microf?bres and/or microparticles of polymeric material is applied electrostatically, while the nanofibres and/or nanoparticles and/or microfibres and/or microparticles of the auxiliary layer of polymeric material are during deposition and/or after deposition on the substrate dissolved on their surfacec, due to which they adhere well to the substrate, and subsequently on nanofibres and/or particles of the auxiliary layer of polymeric material, being dissolved on their surface, the functional layer of polymeric nanofibres is deposited, which adheres well to the auxiliary layer of polymeric material.
Abstract:
The invention relates to the method for deposition of functional layer of polymeric nanofibres on a surface of a substrate, at which on the surface of substrate an auxiliary layer in the form of nanofibres and/or nanoparticles and/or microfϊbres and/or microparticles of polymeric material is applied electrostatically, while the nanofibres and/or nanoparticles and/or microfibres and/or microparticles of the auxiliary layer of polymeric material are during deposition and/or after deposition on the substrate dissolved on their surfacec, due to which they adhere well to the substrate, and subsequently on nanofibres and/or particles of the auxiliary layer of polymeric material, being dissolved on their surface, the functional layer of polymeric nanofibres is deposited, which adheres well to the auxiliary layer of polymeric material.