Title: Mechanical reticulation of polymeric-based closed cell foams

Abstract

Polymeric based closed cell foams, such as shape memory polymer foams, contain bubbles. Making these bubbles continuous is called reticulation. Disclosed are embodiments of a device and method to controllably reticulate polymer-based closed cell foams by puncturing the membranes of these polymer-based closed cell foams.

Inventors:

Rodriguez, Jennifer N.; Maitland, Duncan J.; Wilson, Thomas S.

Issue Date:

2022-05-31

Research Org.:

Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States); Texas A&M Univ., College Station, TX (United States)

Sponsoring Org.:

USDOE; National Institutes of Health (NIH)

OSTI Identifier:

1892980

Patent Number(s):

11345067

Application Number:

16/870,094

Assignee:

Lawrence Livermore National Security, LLC (Livermore, CA); The Texas A&M University System (College Station, TX)

Patent Classifications (CPCs):

A - HUMAN NECESSITIES A61 - MEDICAL OR VETERINARY SCIENCE A61L - METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL

B - PERFORMING OPERATIONS B29 - WORKING OF PLASTICS B29C - SHAPING OR JOINING OF PLASTICS

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A - HUMAN NECESSITIES A61 - MEDICAL OR VETERINARY SCIENCE A61L - METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL

A61L2400/16 - Materials with shape-memory or superelastic properties
A61L31/06 - obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds {
A61L31/146 - {Porous materials, e.g. foams or sponges}

B - PERFORMING OPERATIONS B29 - WORKING OF PLASTICS B29C - SHAPING OR JOINING OF PLASTICS

B29C2793/0045 - Perforating
B29C44/5663 - {by perforating the foam, e.g. to open the cells}
B29C66/02242 - {Perforating or boring}

B - PERFORMING OPERATIONS B29 - WORKING OF PLASTICS B29K - INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR {MOULDS, } REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS

B29K2075/00 - Use of {PU, i.e.} polyureas or polyurethanes {or derivatives thereof}, as moulding material
B29K2105/046 - {with closed cells}
B29K2995/0093 - hydrophobic

B - PERFORMING OPERATIONS B32 - LAYERED PRODUCTS B32B - LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM

B32B2266/0278 - Polyurethane
B32B2266/08 - Closed cell foam
B32B2535/00 - Medical equipment, e.g. bandage, prostheses, catheter
B32B5/18 - characterised by features of a layer {of} foamed material
B32B5/32 - {at least two layers being foamed and next to each other

C - CHEMISTRY C08 - ORGANIC MACROMOLECULAR COMPOUNDS C08G - MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS

C08G18/3228 - {acyclic}
C08G18/3278 - {containing at least three hydroxy groups}
C08G18/3284 - {containing four hydroxy groups}
C08G18/73 - acyclic
C08G2101/00 - Foams

C - CHEMISTRY C08 - ORGANIC MACROMOLECULAR COMPOUNDS C08J - WORKING-UP

C08J2205/052 - Closed cells, i.e. more than 50% of the pores are closed
C08J2207/10 - Medical applications, e.g. biocompatible scaffolds
C08J2375/04 - Polyurethanes
C08J9/38 - Destruction of cell membranes

C - CHEMISTRY C08 - ORGANIC MACROMOLECULAR COMPOUNDS C08L - COMPOSITIONS OF MACROMOLECULAR COMPOUNDS

C08L2201/12 - Shape memory
C08L2203/14 - used for foams
C08L75/04 - Polyurethanes

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DOE Contract Number:  

AC52-07NA27344; R01EB000462

Resource Type:

Patent

Resource Relation:

Patent File Date: 05/08/2020

Country of Publication:

United States

Language:

English