摘要:
A porous substrate (12) is pretreated in a plasma field (20) and a functionalizing monomer is immediately flash-evaporated (22), deposited and cured (24) over the porous substrate in a vacuum vapor deposition chamber (10). By judiciously controlling the process so that the resulting polymer coating adheres to the surface of individual fibers in ultra-thin layers (approximately 0.02-3.Oµm) that do not extend across the pores in the material, the porosity of the porous substrate (10) is essentially unaffected while the fibers and the final product acquire the desired functionality. The resulting polymer layer is also used to improve the adherence and durability of metallic and ceramic coatings.
摘要:
Fabrics having a laundry-durable finish made by graft polymerisation of a polymerisable monomer and methods of manufacture thereof which comprise exposing the fabric or a region thereof to a polymerisable monomer and exciting the polymerisable monomer within a monomer excitation zone such as a plasma. The methods of the invention provide oleophobic and hydrophobic stain-resistant fabrics having improved laundry-durability without adversely affecting other textile properties such as textile handle, drape and breathability.
摘要:
Wound dressing articles comprising a nonwoven web comprising a plurality of fibers having grafted pendant hydrophilic groups, methods that use high energy irradiation for making a plurality of fibers having grafted pendant hydrophilic groups, useful for making wound dressing articles.
摘要:
A porous substrate (12) is pretreated in a plasma field (20) and a functionalizing monomer is immediately flash-evaporated (22), deposited and cured (24) over the porous substrate in a vacuum-deposition chamber (10). By judiciously controlling the process so that the resulting polymer coating adheres to the surface of individual fibers in ultra-thin layers (approximately 0.02-3.O micrometers) that do not extend across the pores in the material, the porosity of the porous substrate (12) is essentially unaffected while the fibers and the final product acquire the desired functionality. The resulting polymer layer is also used to improve the adherence and durability of metallic and ceramic coatings.
摘要:
Wound dressing articles comprising a nonwoven web comprising a plurality of fibers having grafted pendant hydrophilic groups, methods that use high energy irradiation for making a plurality of fibers having grafted pendant hydrophilic groups, useful for making wound dressing articles.
摘要:
Die Erfindung betrifft Gebilde, umfassend Fasern und eine Beschichtung, die auf der Oberfläche der Fasern kovalent gebunden ist, dadurch gekennzeichnet, dass die Gebilde bei 200°C temperaturbeständig sind. Die Erfindung betrifft auch Verfahren zu deren Herstellung, Brennstoffzellen und Gasdiffusionsschichten, die die Gebilde enthalten sowie deren Verwendung in Brennstoffzellen und Gasdiffusionsschichten.
摘要:
Fabrics having a laundry-durable finish made by graft polymerisation of a polymerisable monomer and methods of manufacture thereof which comprise exposing the fabric or a region thereof to a polymerisable monomer and exciting the polymerisable monomer within a monomer excitation zone such as a plasma. The methods of the invention provide oleophobic and hydrophobic stain-resistant fabrics having improved laundry-durability without adversely affecting other textile properties such as textile handle, drape and breathability.
摘要:
A method for coating a textile includes applying a substantially water-free, energy-curable, polymer-forming composition to the textile and exposing the textile and composition to a source of energy under such conditions as to generate chemically active sites on the surface of the textile and polymerize the composition. The resulting polymer is grafted onto the textile. Preferably, the energy is derived from electron beam radiation. The composition includes an epoxy oligomer having at least two ethylenically unsaturated moieties, and at least one alkoxylated polyol monomer having at least two ethylenically unsaturated moieties and capable of being copolymerized with the epoxy oligomer. Preferably, the composition also includes a surface active agent capable of rendering the uncured composition dispersible in water. Optionally, the composition can contain a colorant, and photoinitiator. The composition is especially suitable for use as a screen printing ink and coating material for textiles.
摘要:
A method of treating wool in the form of a fibre, yarn, sliver, fabric or garment. A polymer coating is applied by plasma polymerisation to prevent shrinkage due to felting due to laundering. The method may include a pre-treatment step, for example application of a continuous plasma of inert gas, application of nano particles to the fibre surface or coating the fibre surface with a polymer.
摘要:
The present invention relates to a process for functionalising polymer materials, comprising a first step wherein the polymer material is grafted, by means of high energy irradiation, with a functionalised monomer having at least one first functional group and at least one olefinic end group, and a second step wherein the so-treated polymer material is reacted with a functionalised organic compound having at least one second functional group reactive with respect to said first functional group, in the presence of an enzymatic catalyst. The coupled functionalised compound is able to impart specific properties to the polymer matrix, such as antibacterial or flame retardant properties, or can be employed to produce biocomposites to be used, for instance, in the biomedical field, or in the food, construction, packaging or textile industries.