公开(公告)号：US11180621B2

公开(公告)日：2021-11-23

申请号：US16569983

申请日：2019-09-13

Applicant: University of South Carolina

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

IPC: C08J5/22 ,  B01D67/00

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.

公开(公告)号：US10400054B2

公开(公告)日：2019-09-03

申请号：US16001027

申请日：2018-06-06

Applicant: University of South Carolina

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

IPC: C08F292/00 ,  C08F4/04

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：US12227627B2

公开(公告)日：2025-02-18

申请号：US18535450

申请日：2023-12-11

Applicant: UNIVERSITY OF SOUTH CAROLINA

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

IPC: C08J5/22 ,  B01D67/00 ,  B01D69/10

Abstract: 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.

公开(公告)号：US20200087473A1

公开(公告)日：2020-03-19

申请号：US16569983

申请日：2019-09-13

Applicant: University of South Carolina

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

IPC: C08J5/22 ,  B01D67/00

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.

公开(公告)号：US20180282464A1

公开(公告)日：2018-10-04

申请号：US16001027

申请日：2018-06-06

Applicant: University of South Carolina

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

IPC: C08F292/00 ,  C08F4/04

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：US09773953B2

公开(公告)日：2017-09-26

申请号：US14781481

申请日：2014-04-01

Applicant: RENSSELAER POLYTECHNIC INSTITUTE ,  UNIVERSITY OF SOUTH CAROLINA

Inventor： Ying Li ,  Peng Tao ,  Linda S. Schadler ,  Robert F. Karlicek, Jr. ,  Richard W. Siegel ,  Lei Wang ,  Brian C. Benicewicz

IPC: C08G79/02 ,  H01L33/50 ,  C07F7/10 ,  C09K11/02 ,  C09K11/06 ,  H01L33/56 ,  B82Y30/00

CPC classification number: H01L33/504 ,  B82Y30/00 ,  C07F7/10 ,  C08G79/02 ,  C09K11/02 ,  C09K11/025 ,  C09K11/06 ,  C09K2211/1011 ,  C09K2211/1048 ,  H01L33/56

Abstract: Provided is a phosphor-functionalized nanoparticle that includes an inorganic nanoparticle core; surface polymer brushes that include a plurality of long-chain polymers bonded to the surface of the inorganic nanoparticle core, said long-chain polymers each having molecular weight greater than 500, and a plurality of short-chain polymers bonded to the surface of the inorganic nanoparticle core, said short-chain polymers each having molecular weight less than 0.5 times the average molecular weight of the long-chain polymers; and one or more organic phosphors bonded to at least one of the inorganic nanoparticle core and one or more of the plurality of short-chain polymers. Graft density of the short-chain polymers on the surface of the inorganic nanoparticle core (σSC) is greater than graft density of the long-chain polymers on the surface of the inorganic nanoparticle core (σLC). Also provided are polymer matrices, LED's, optical systems, lighting devices, and fixtures that include the inventive nanoparticle.

公开(公告)号：US09732169B2

公开(公告)日：2017-08-15

申请号：US14805531

申请日：2015-07-22

Applicant: University of South Carolina

Inventor： Lei Wang ,  Brian C. Benicewicz

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

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.

公开(公告)号：US12042779B2

公开(公告)日：2024-07-23

申请号：US17617113

申请日：2020-04-07

Applicant: UNIVERSITY OF SOUTH CAROLINA ,  COLUMBIA UNIVERSITY

Inventor： Brian C. Benicewicz ,  Yucheng Huang ,  Connor R. Bilchak ,  Sanat K. Kumar

IPC: B01D53/22 ,  B01D53/52 ,  B01D53/62 ,  B01D63/10 ,  B01D67/00 ,  B01D69/02 ,  B01D69/08 ,  B01D69/10 ,  B01D69/14 ,  B01D71/02 ,  B01D71/40 ,  B01D71/78 ,  B01J20/26 ,  B01J20/28 ,  B01J20/30 ,  C08F292/00

CPC classification number: B01J20/28038 ,  B01D53/228 ,  B01D63/101 ,  B01D67/00793 ,  B01D69/02 ,  B01D69/08 ,  B01D69/10 ,  B01D69/148 ,  B01D71/027 ,  B01D71/4011 ,  B01D71/78 ,  B01J20/261 ,  B01J20/28011 ,  B01J20/3085 ,  C08F292/00 ,  B01D2053/224 ,  B01D2323/38 ,  B01D2325/04 ,  B01D2325/34 ,  B01J2220/46 ,  C08F2438/03

Abstract: 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.

公开(公告)号：US11777124B2

公开(公告)日：2023-10-03

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 ,  H01M8/10

CPC classification number: H01M8/103 ,  C08J5/18 ,  C08K3/32 ,  C25B13/08 ,  H01M8/1004 ,  C08J2379/04 ,  C08K2003/329 ,  H01M2008/1095 ,  H01M2300/0082

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：US10011674B2

公开(公告)日：2018-07-03

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: C08F2/00 ,  C08F4/00 ,  C08F4/16 ,  C08F292/00 ,  C08F4/04

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.