Medical University of South Carolina

Rensselaer Polytechnic Institute

Basf Fuel Cell Gmbh

Pbi Performance Products, Inc.

Basf Se Corporation

Columbia University

Basf Fuel Cell Research Gmbh

Other

Savannah River Nuclear Solutions, LLC

Basf Schweiz Ag

Brian C Benicewicz

Gordon Calundann

Oemer Uensal

Anand Viswanath

Lei Wang

Fei Huang

Laura A Murdock

Lihui Wang

Joachim Kiefer

Eui W Choe

Michael J Sansone

Atri Rungta

Douglas Michael Dukes

Richard W Siegel

Bobby G Dawkins

Jochen Baurmeister

Linda S Schadler

Peng Tao

Mohammad Mohammadkhani

Andrew Pingitore

Linda S Schadler Feist

Guoqing Qian

Jiping Shao

Gregory S Copeland

Michael H Bell

Sigmar Bräuninger

J Dean Baker

Rita H Joiner

Sanat K Kumar

Ying Li

Eugene Scanlon

Alexandra Nicole Green

Connor R Bilchak

Arumugam Sudalai

Yu Li

Robert F Karlicek

Alan Decho

Christoph Padberg

Subbareddy Kanagasabapathy

John Keith Nelson

Henrik Hillborg

Mathias Weber

Isabel Kundler

Christopher James Durning

Kathryn M L Taylor-Pashow

Linda Schadler Feist

Alexander Lanier Gulledge

Junting Li

Julia Pribyl

Yucheng Huang

Thomas C Shehee

Subbareddiar Kanagasabapathy

Chunzhao Li

Amin Daryaei

Ran Liu

Warren P Steckle, Jr

Kristen Miller

Eileen Buenning

Max Molleo

Jr Warren P Steckle

Sigmar BRÄUNINGER

Eui Won Choe

A method of forming a high internal phase emulsion (HIPE) foam is provided. A nitroxide-containing monomer can be used in combination with other monomers that can then be used to make a high internal phase emulsion foam upon curing. The nitroxide group can subsequently be used to control the radical polymerization of many monomers, which can be grafted from the surface of the high internal phase emulsion foam. The resulting foam can be useful in performing separations of radioactive species, metals, metal ions, multi-element ions, metal complexes, halides, and organic chemical species in chemical process streams, clean-up operations, etc.

Surface grafted high internal phase emulsion foams for chemical separations

Novel PBI films which may be used in electrochemical cells, such as redox flow batteries, are disclosed. Additionally, disclosed herein are membranes which comprise the novel PBI films which may be free from an organic solvent, and have a tensile strength at break of at least 25 MPa after drying.

Polybenzimidazole films

Gas separation membranes as may be used in separating gaseous materials from one another and methods of forming the membranes are described. The separation membranes include polymer-grafted nanoparticles (GNPs) as a platform and a relatively small amount of free polymer. The free polymer and the polymer grafted to the nanoparticles have the same chemical structure and similar number average molecular weights. The gas separation membranes can exhibit high ideal selectivity and can be used in a variety of applications, such as carbon capture.

Gas separation membranes from polymer-grafted nanoparticles

A novel process for making PBI films starting from gel PBI membranes polymerized and casted in the PPA process wherein acid-imbibed gel PBIs are neutralized in a series of water baths and undergo controlled drying in association with a substrate material, yielding a PBI film without the use of organic solvents.

PBI films formed without use of organic solvents

Disclosed are redox flow battery membranes, redox flow batteries incorporating the membranes, and methods of forming the membranes. The membranes include a polybenzimidazole gel membrane that is capable of incorporating a high liquid content without loss of structure that is formed according to a process that includes in situ hydrolysis of a polyphosphoric acid solvent. The membranes are imbibed with a redox flow battery supporting electrolyte such as sulfuric acid and can operate at very high ionic conductivities of about 100 mS/cm or greater. Redox flow batteries incorporating the PBI-based membranes can operate at high current densities of about 100 mA/cmor greater.

Polybenzimidazole (PBI) membranes for redox flow batteries

The current disclosure teaches one to achieve PBI membranes with high ionic conductivity and low mechanical creep for the first time. This is in contrast to previous teachings of PBI membrane fabrication methods, which yield PBIs with either high ionic conductivity and high mechanical creep or low ionic conductivity and low mechanical creep. The membranes produced according to the disclosed process provide doped membranes for applications in fuel cells and electrolysis devices such as electrochemical separation devices.

Proton-conducting PBI membrane processing with enhanced performance and durability

Disclosed are redox flow battery membranes, redox flow batteries incorporating the membranes, and methods of forming the membranes. The membranes include a densified polybenzimidazole gel membrane that is capable of incorporating a high liquid content without loss of structure that is formed according to a process that includes in situ hydrolysis of a polyphosphoric acid solvent followed by densification of the gel membrane. The densified membranes are then imbibed with a redox flow battery supporting electrolyte such as sulfuric acid and can operate at very high ionic conductivities of about 50 mS/cm or greater and with low permeability of redox couple ions, e.g. vanadium ions, of about 10cm/s or less. Redox flow batteries incorporating the membranes can operate at current densities of about 50 mA/cmor greater.

Low permeability polybenzimidazole (PBI) gel membranes for redox flow batteries

Method for producing PBI films without organic solvents

Nanoparticles having a plurality of PVP chains covalently bonded to a surface of the nanoparticle are provided, along with their methods of formation and the RAFT agents for the polymerization of the PVP chains. RAFT agents are generally provided, along with their methods of formation and use. Methods are also generally provided for grafting a PVP polymer onto a nanoparticle. In one embodiment, the method includes polymerizing a plurality of monomers in the presence of a RAFT agent to form a polymeric chain covalently bonded to the nanoparticle.

Raft agents and their use in the development of polyvinylpyrrolidone grafted nanoparticles

A polybenzimidazole (PBI) resin including a polybenzimidazole oligomer having at least two reactive end groups is provided. Also provided is a method of making a polybenzimidazole oligomer with at least two reactive end groups including the steps of reacting a tetraamine, a dicarboxylic component, and a reactive end group moiety in a solvent at a temperature greater than room temperature for a period of time; precipitating the oligomer from the solvent after reacting; and removing any reaction by-products from the oligomer after precipitating. A method of making a PBI molded article and a PBI molded article are also provided.

Polybenzimidazole oligomers with reactive end groups

A method is generally provided for attaching a polymer chain onto a surface of a nanoparticle, where the polymer chain comprises a cyclic arrangement of saccharides. The resulting grafted nanoparticle is also generally provided, along with its methods of use by exposing to a bacteria colony.

Cyclodextrin functionalized nanoparticles for quenching bacterial communications

Methods for synthesizing a polymer functionalized nanoparticle are provided. The method can include attaching a polymeric chain to a nanoparticle, wherein the polymeric chain comprises a plurality monomers, wherein the plurality of monomers comprise alkyl (meth)acrylate monomers. Polymer functionalized nanoparticles are also provided that comprise a nanoparticle defining a surface, and a polymeric chain covalently bonded to the surface of the nanoparticle, wherein the polymeric chain comprises a poly alkyl (meth)acrylate. Nanocomposites are also provided that include a plurality of these polymer functionalized nanoparticles dispersed within a polymeric matrix (e.g., a polyolefin matrix).

Poly alkyl (meth)acrylates grafted nanoparticles and their methods of manufacture and use

The present invention relates to a novel proton-conducting polymer membrane based on polyazole polymers which, owing to their outstanding chemical and thermal properties, can be used widely and are suitable in particular as polymer electrolyte membrane (PEM) for producing membrane electrode assemblies or so-called PEM fuel cells.

Proton-conducting membrane, method for their production and their use in electrochemical cells

Nanoparticles having a plurality of PVP chains covalently bonded to a surface of the nanoparticle are provided, along with their methods of formation and the RAFT agents for the polymerization of the PVP chains. RAFT agents are generally provided, along with their methods of formation and use. Methods are also generally provided for grafting a PVP polymer onto a nanoparticle. In one embodiment, the method includes: polymerizing a plurality of monomers in the presence of a RAFT agent to form a polymeric chain covalently bonded to the nanoparticle.

Growing community of inventors

Columbia, SC, United States of America

Brian C Benicewicz