Extrudable polymer composites with membrane barrier properties

Abstract

The present disclosure generally relates to extrusion die systems. In particular, the present disclosure relates to the cyclical extrusion of materials to generate small sized grain features, generally in the range of nanosized grain features, in a tubular or profile shape, in which the individual nanolayers possess pores and/or polymer crystals oriented parallel to the extrusion flow direction and including products with enhanced permeation properties.

What is claimed is: 
     
         1 . An extruded product with 2-10,000 nano-polymer layers in tubular or profile shapes, wherein the extruded polymer or a component of the polymer comprise pores aligned along the axis of extrusion. 
     
     
         2 . A product according to  claim 1  wherein the product is a battery or component of a battery. 
     
     
         3 . A product according to  claim 1  wherein the product is a separator in a battery. 
     
     
         4 . A product according to  claim 1  wherein the product contains pores and is able to combine or extract fluids, gases or both through the pores.