Extrudable polymer composites with membrane barrier properties

Patent metadata

Field	Value
Publication number	US-9919467-B2
Application number	US-201414244843-A
Country	US
Kind code	B2
Filing date	Apr 3, 2014
Priority date	Apr 3, 2013
Publication date	Mar 20, 2018
Grant date	Mar 20, 2018

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.

First claim

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 lamellar crystals and pores aligned along the axis of extrusion.

2. A product according to claim 1 wherein layer pore occurrence can be axial or equatorial.

3. A product according to claim 1 wherein the nano-polymer extrudate has been bent, stretched, or twisted after extrusion.

4. A product according to claim 1 additionally comprising solubilizing agents, diluents, additives, micro-particles, nano-composites, magnetic agents, fibers, and abrasives.

5. A product according to claim 1 wherein said extruded product is tubular and comprises a core.

6. A product according to claim 5 , wherein said extruded product comprises pores that are 0.01 μm to 100 μm.

7. An extruded product with 2-10,000 nano-polymer layers in tubular or profile shapes, wherein said polymer or a component of said polymer comprise lamellar crystals aligned along the axis of extrusion and wherein nano-polymer layer sheets comprise lamellar crystals aligned along the axis of extrusion.

8. An extruded product with 2-10,000 nano-polymer layers in tubular or profile shapes, wherein said polymer or a component of said polymer comprise lamellar crystals aligned along the axis of extrusion and wherein the lamellar crystal sheets are alternated with layers of different lamellar crystals or polymeric layers containing different excipients.

9. A product according to claim 6 that purifies water.

10. A product according to claim 6 that conducts electricity.

11. A product according to claim 6 that generates electricity.

12. An extruded product with 2-10,000 micro or nano layers in tubular or profile shapes, including films and sheets, wherein the extruded polymer contains nanocomposites aligned along the axis of extrusion to enhance barrier properties.

Assignees

• Guill Tool & Eng Co Inc

Inventors

• Guillemette Richard
• Peters Robert
• Hummel Christopher

Classifications

• Y10T428/249921

  Web or sheet containing structurally defined element or component · CPC title

• B29C48/335

  Multiple annular extrusion nozzles in coaxial arrangement, e.g. for making multi-layered tubular articles · CPC title

• B29C48/09

  Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels · CPC title

• Y10T428/2929

  Bicomponent, conjugate, composite or collateral fibers or filaments [i.e., coextruded sheath-core or side-by-side type] · CPC title

• B29C48/71

  for layer multiplication (extrusion of multi-component articles B29C48/16) · CPC title