Northwestern University

Dow Global Technolgoies LLC

John M Torkelson

Cynthia Pierre

Philip Brunner

Amanda Marie Flores

Klementina Khait

Katsuyuki Wakabayashi

Amanda Flores Walker

Lingqiao Li

Jeanette M Diop

Junichi Masuda

Naomi Furgiuele

Xi Chelsea Chen

Karl A Scheidt

William Hoy Heath

Nathan Wilmot

Kosmas Kasimatis

Monica Olvera De La Cruz

Elizabeth Dhulst

Kailong Jin

Andrew Lebovitz

Tong Wei

Krishnan A Iyer

Xi Chen

Jeremy Wang

Mohammed Abdulaziz Bin Rusayyis

Vincent Lombardo

Emily Leitsch

Methods for removing contaminants from aqueous media using polyelectrolyte complexes having a heterogeneous charge distribution are provided. The polyelectrolyte complexes are formed from an amphiphilic anionic random copolymer and a cationic random copolymer are provided. The polyelectrolyte complexes absorb cationic, anionic, or hydrophobic organic molecules and can be easily removed from water.

Assembly of random copolymer polyelectrolyte complexes for removal of contaminants from water

Curable compositions for dynamic epoxy-based thermoset adhesives and/or sealants are provided. Methods of applying the compositions to form strong, low-stress, cured adhesive polymer films are also provided. The cured polymer films use crosslinkers that include disulfide and carbon-nitrogen bonds, wherein the disulfide bonds impart dynamic chemistry to the polymer network structure in order to the achieve adaptable thermoset adhesives and sealants.

Methods for enhancing the bonding strength of thermoset adhesives and sealants via disulfide dynamic chemistry

A composition for forming a dynamic crosslinked polymer network may comprise (a) a dynamic crosslinker having formula R—R″R'N—S—S—NR′R″—R, wherein each R is a polymerizable group comprising a carbon-carbon (C—C) double bond capable of undergoing free radical polymerization and each R′ and each R″ are independently selected alkyl groups; (b) a polymer comprising a C—C double bond capable of undergoing free radical polymerization, a monomer comprising a C—C double bond capable of undergoing free radical polymerization, or combinations thereof; and (c) a free radical initiator, wherein the dynamic crosslinker does not comprise a urethane group.

Recyclable crosslinked polymer networks containing dynamic dialkyl amino disulfide linkages

Polythiourethane polymer networks that can be processed and/or recycled are provided. Also provided are methods of forming the polythiourethane polymer networks using excess thiol and/or a dual catalyst system and methods for reprocessing and recycling the polyurethane polymer networks. The polythiourethane polymer networks are based on thiourethane dynamic chemistry.

Methods for making recyclable and depolymerizable polymer network materials via thiourethane dynamic chemistry

Methods for forming polyolefin nanocomposite precursor compositions are provided. In embodiments, such a method comprises mixing a polyolefin, unmodified graphite, and a peroxide crosslinker via solid-state shear pulverization under conditions to form a polyolefin nanocomposite precursor composition comprising the polyolefin; exfoliated, unmodified graphite dispersed throughout the polyolefin; and unreacted peroxide crosslinker dispersed throughout the polyolefin, wherein the polyolefin is polyethylene, a copolymer of polyethylene, or combinations thereof. Methods of forming crosslinked polyolefin nanocomposites, the polyolefin nanocomposite precursor compositions, and crosslinked polyolefin nanocomposites are also provided.

Methods of forming crosslinked polyolefin nanocomposites having high wear resistance

Methods for preparation of polymer materials incorporating various organic components, including but not limited to solid and/or liquid organic wastes, post-consumer refuse and agricultural, commercial and/or manufacturing by-products, using solid-state shear pulverization.

Polymer-organic matter composites using solid-state shear pulverization

Reorganizable or reprocessable cross-linked polymer networks with alkoxyamine dynamic covalent bonds and methods for preparation.

Reprocessable cross-linked network polymers with alkoxyamine dynamic covalent bonds

Solid-state shear pulverization of semi-crystalline polymers and copolymers thereof and related methods for enhanced crystallization kinetics and physical/mechanical properties.

Enhancing the physical properties of semi-crystalline polymers via solid state shear pulverization

Methods for improved colorant dispersion in polymer materials using solid-state shear pulverization, as compared to mixing techniques of the prior art, to address concerns relating to colorant agglomeration, plating-out and the like.

Colorant dispersion in polymer materials using solid-state shear pulverization

Polymeric compositions comprising as-received organic waste materials comprising an antioxidant component for enhanced thermal stability.

Direct use of natural antioxidant-rich agro-wastes as thermal stabilizers for polymers

Enhancing the physical properties of semi-crystalline polymers via solid-state shear pulverization

Functionalization of polymers, including polyolefins, via decomposition of organic peroxides through the use of solid-state shear pulverization.

Peroxy-derivative functionalization of polypropylene via solid-state shear pulverization

Functionalization of polymers, including polyolefins, with a, &#x3b2;-unsaturated carboxy-derived moieties through the use of solid-state shear pulverization.

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Skokie, IL, United States of America

John M Torkelson