Surface modification of polymer foams using plasma

US11459439B2 · kind B2 · utility

Assignees

• Lawrence Livermore National Security, LLC · US
• THE TEXAS A&M UNIVERSITY SYSTEM · US

Inventors

• Landon D. Nash · College Station, US
• Duncan J. Maitland · College Station, US
• Nicole Docherty · Benton Harbor, US
• Thomas S. Wilson · San Leandro, US
• Ward Small, IV · Livermore, US
• Jason M. Ortega · Pacifica, US
• Pooja Singhal · Redwood City, US

Key dates

• Filing date: Aug 4, 2020
• Grant date: Oct 4, 2022
• Expiry date: Aug 4, 2040

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08J2375/04
• WIPO field: Other special machines
• WIPO sector: Mechanical engineering

Abstract

An embodiment includes a system comprising: a monolithic shape memory polymer (SMP) foam having first and second states; wherein the SMP foam includes: (a) polyurethane, (b) an inner half portion having inner reticulated cells defined by inner struts, (c) an outer half portion, having outer reticulated cells defined by outer struts, surrounding the inner portion in a plane that provides a cross-section of the SMP foam, (d) hydroxyl groups chemically bound to outer surfaces of both the inner and outer struts. Other embodiments are discussed herein.