Abstract: Disclosed herein are composite structures, overmolded composites structures and processes for their preparation. The disclosed composite structures have a surface having at least a portion made of a surface resin composition, and comprise a fibrous material being impregnated with a matrix resin composition, wherein the matrix polyamide resin composition and the surface resin composition are selected from polyamide compositions comprising a blend of semi-aromatic polyamides.

Abstract: Disclosed herein are overmolded composite structures and processes for their preparation. The disclosed overmolded composite structures comprise i) a first component having a surface, of which at least a portion made of a surface resin composition, and comprising a fibrous material being impregnated with a matrix resin composition, ii) a second component comprising an overmolding resin composition, wherein said second component is adhered to said first component over at least a portion of the surface of said first component, and wherein the matrix resin composition and the surface resin composition are identical or different polyamide compositions.

Abstract: Provided are laminates containing in order: a fabric layer with an oil and water repellant coating, a continuous chitosan film, a continuous water vapor permeable polyurethane layer, and a fabric layer. The laminates, which have improved function in high moisture environments, can be used to make a variety of finished articles that can be used to provide protection from hazardous chemical and biological agents.

Abstract: The co-self-assembly of organic, e.g., block copolymer, and inorganic, e.g., sol-gel, components is employed to create nanometer features of silicon dioxide type materials in thin films on silicon surfaces. In the preferred embodiment, sol-gel chemistry is used to introduce inorganic components (preferably 3-glycidoxy-propyltrimethoxysilane and aluminum-tri-sec-butoxide) into a block copolymer (preferably poly (isoprene-block-ethylene oxide) (PI-b-PEO)), as a structure-directing agent. The inorganic components preferentially migrate to the PEO block and swell the copolymer into different morphologies depending on the amount of sol-gel precursors added. Thin films (e.g., below 100 nm) are created by spin coating the hybrid solution onto a silicon wafer. An inverse hexagonal morphology, for example, is produced in which the polymer forms nanopores within an inorganic matrix. Through heat treatment the organic phase can subsequently be removed leaving an all-inorganic porous nanostructure on the wafer.