公开(公告)号：US11482721B2

公开(公告)日：2022-10-25

申请号：US16570253

申请日：2019-09-13

Applicant: UNIVERSITY OF SOUTH CAROLINA

Inventor： Brian C. Benicewicz ,  Laura Murdock ,  Lihui Wang ,  Fei Huang ,  Andrew Pingitore

IPC: H01M8/1081 ,  H01M8/1086 ,  H01M8/18 ,  H01M8/1032 ,  H01M8/1044 ,  H01M8/1067 ,  H01M8/1027

Abstract: 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 10−7 cm2/s or less. Redox flow batteries incorporating the membranes can operate at current densities of about 50 mA/cm2 or greater.

公开(公告)号：US10556980B2

公开(公告)日：2020-02-11

申请号：US14636468

申请日：2015-03-03

Applicant: University of South Carolina

Inventor： Brian C. Benicewicz ,  Mohammad Mohammadkhani ,  Junting Li

IPC: C08F292/00 ,  C08L23/06 ,  C08L23/12 ,  C08L33/04 ,  C08L33/10 ,  C08L51/10

Abstract: 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).

公开(公告)号：US10112143B2

公开(公告)日：2018-10-30

申请号：US14878115

申请日：2015-10-08

Applicant: The Trustees of Columbia University in the City of New York ,  University of South Carolina

Inventor： Sanat K. Kumar ,  Christopher James Durning ,  Eileen Buenning ,  Connor Bilchak ,  Brian C. Benicewicz

IPC: B01D53/00 ,  B01D53/22 ,  C10L3/10 ,  B01D69/14 ,  G01N21/78 ,  G01N33/00 ,  B01D69/02 ,  B01D71/02 ,  B01D71/78

Abstract: Provided are methods of separating one or more components from a fluid by using membranes and other materials comprising polymer graft nanoparticles arranged in a lattice structure. The disclosed compositions exhibit an increase in selectivity between two penetrants that is greater than the neat polymer selectivity for those penetrants. The compositions also exhibit an increase in selectivity between two penetrants with increasing permeability. Also provided are systems for effecting such separations, systems for agent detection, and additional methods for constructing separation components.

公开(公告)号：US20160024234A1

公开(公告)日：2016-01-28

申请号：US14805531

申请日：2015-07-22

Applicant: University of South Carolina

Inventor： Lei Wang ,  Brian C. Benicewicz

IPC: C08F126/10 ,  C07D277/16 ,  C07D295/194

CPC classification number: C08F126/10 ,  C07D277/16 ,  C07D295/194 ,  C08F292/00 ,  C08F2438/03 ,  C08F226/10

Abstract: 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.

Abstract translation: 提供了具有共价键合到纳米颗粒表面的多个PVP链的纳米颗粒及其形成方法和用于聚合PVP链的RAFT试剂。 通常提供RAFT试剂及其形成和使用方法。 通常还提供了将PVP聚合物接枝到纳米颗粒上的方法。 在一个实施方案中，所述方法包括：在RAFT试剂存在下聚合多个单体以形成共价结合到纳米颗粒上的聚合物链。

公开(公告)号：US11799112B2

公开(公告)日：2023-10-24

申请号：US17686631

申请日：2022-03-04

Applicant: UNIVERSITY OF SOUTH CAROLINA

Inventor： Brian C. Benicewicz ,  Laura Murdock ,  Lihui Wang ,  Fei Huang ,  Andrew Pingitore

IPC: H01M8/1027 ,  H01M4/92 ,  H01M4/88 ,  H01M8/1032 ,  H01M8/1048 ,  H01M8/1067 ,  H01M8/1081 ,  H01M8/1044 ,  H01M4/86

CPC classification number: H01M8/1027 ,  H01M4/8828 ,  H01M4/92 ,  H01M8/1032 ,  H01M8/1044 ,  H01M8/1048 ,  H01M8/1067 ,  H01M8/1081 ,  H01M4/8605

Abstract: 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/cm2 or greater.

公开(公告)号：US11302948B2

公开(公告)日：2022-04-12

申请号：US16570290

申请日：2019-09-13

Applicant: UNIVERSITY OF SOUTH CAROLINA

Inventor： Brian C. Benicewicz ,  Laura Murdock ,  Lihui Wang ,  Fei Huang ,  Andrew Pingitore

IPC: H01M8/1027 ,  H01M4/92 ,  H01M4/88 ,  H01M8/1032 ,  H01M8/1048 ,  H01M8/1067 ,  H01M8/1081 ,  H01M8/1044 ,  H01M4/86

Abstract: 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/cm2 or greater.

公开(公告)号：US20210280883A1

公开(公告)日：2021-09-09

申请号：US17194417

申请日：2021-03-08

Applicant: University of South Carolina

Inventor： Laura A. Murdock ,  Fei Huang ,  Brian C. Benicewicz

IPC: H01M8/103 ,  H01M8/1004 ,  C25B13/08 ,  C08J5/18 ,  C08K3/32

Abstract: 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.

公开(公告)号：US20170166676A1

公开(公告)日：2017-06-15

申请号：US15373943

申请日：2016-12-09

Applicant: University of South Carolina

Inventor： Anand Viswanath ,  Brian C. Benicewicz ,  Michael H. Bell

IPC: C08F292/00

CPC classification number: C08F292/00 ,  C08F4/04 ,  C08G2261/418 ,  Y02P20/149

Abstract: Disclosed are polymerization initiators as may be utilized for addition of polymers to a substrate surface. The initiators are azo-based initiators that include multi-functionality through addition of multiple anchoring agents to an inner azo group. Disclosed polymerization initiators can be utilized to form high density and high molecular weight polymers on a surface such as a particulate surface. Formed materials can be beneficial in one embodiment in fracking applications, providing composite proppant/polymer materials that can prevent leakage of polymers from a subterranean geologic formation.

公开(公告)号：US20150266990A1

公开(公告)日：2015-09-24

申请号：US14636468

申请日：2015-03-03

Applicant: UNIVERSITY OF SOUTH CAROLINA

Inventor： Brian C. Benicewicz ,  Mohammad Mohammadkhani ,  Junting Li

IPC: C08F292/00 ,  C08L23/12 ,  C08L23/06

Abstract: 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).

Abstract translation: 提供了合成聚合物官能化纳米颗粒的方法。 该方法可以包括将聚合物链连接到纳米颗粒上，其中聚合物链包含多个单体，其中多个单体包含（甲基）丙烯酸烷基酯单体。 还提供了包含限定表面的纳米颗粒和共价键合到纳米颗粒表面的聚合物链的聚合物官能化纳米颗粒，其中聚合链包含聚（甲基）丙烯酸烷基酯。 还提供纳米复合材料，其包括分散在聚合物基质（例如聚烯烃基质）中的多种这些聚合物官能化纳米颗粒。

公开(公告)号：US11884787B2

公开(公告)日：2024-01-30

申请号：US17522160

申请日：2021-11-09

Applicant: UNIVERSITY OF SOUTH CAROLINA

Inventor： Laura A. Murdock ,  Lihui Wang ,  Fei Huang ,  Brian C. Benicewicz

IPC: C08J5/22 ,  B01D67/00

CPC classification number: C08J5/2256 ,  B01D67/0011 ,  B01D67/0013 ,  B01D67/0093 ,  B01D2323/30 ,  B01D2323/40 ,  B01D2325/02 ,  B01D2325/42 ,  C08J2379/04

Abstract: 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.