The Johns Hopkins University

Christopher M Hoffman, Jr

Zhiyong Xia

James K Johnson

Rengaswamy Srinivasan

Konstantinos Gerasopoulos

Jason J Benkoski

Adam W Freeman

Keith S Caruso

Morgana M Trexler

Spencer A Langevin

Matthew Yeager

Reid E Messersmith

Douglas A Smith

Marcia W Patchan

Matthew W Logan

Felix C Sage

Mairead E Bartlett

Brian M Koronkiewicz

Contaminant-sequestering coatings include a network of hydrolyzed silane compounds including (i) a plurality of fluorinated functionalities, and (ii) a plurality of thiol functional groups are provided. The network of hydrolyzed silane compounds includes a fluorinated silane including (a) a hydrophilic polar head region. The polar head region includes one or multiple units of ethylene glycol (EG) functionality, (b) a fluorine-containing region, and (c) an anchor region including a silicon atom. The contaminant-sequestering coatings may sequester one or more per- and polyfluoroalkyl substances (PFAS), heavy metals, biological species, or any combination thereof.

Contaminant-sequestering coatings and methods of using the same

A microcapsule for use with an underwater adhesive includes a shell including nanoclay platelets and a polyurea product of an interfacial polymerization of a polyamine and an aromatic polyisocyanate. The microcapsule further includes a core composition encapsulated by the shell. The core composition includes a base catalyst for formation of a polyurethane, a polyol, and a hydrophilic solvent.

Microcapsules for use with polyurethane and epoxy adhesives

Coating compositions include a binder that has a first polymeric material that does not undergo ultraviolet (UV) degradation and/or does not absorb UV radiation/light. The coating compositions may further include at least a first UV-reflective pigment dispersed throughout the binder. The coating compositions may be provided in a cured form as a solid coating layer that may overly at least a portion of a substrate.

Low solar absorptance coatings

A nanofiber comprising a polyamide including at least one substituted phenyl group is provided. The nanofiber includes an average diameter from about 50 to about 1000 nm. A fibrous mat including a plurality of the nanofibers is also provided. A composite including a plurality of the nanofibers and a continuous matrix resin is also provided. A method of forming the nanofibers is also provided.

Electrospun nanofibers

Contaminate-sequestering coatings including a network of hydrolyzed silane compounds including a plurality of thiol functional groups, a plurality of fluorinated functionalities, or both are provided. The contaminate-sequestering coatings may sequester one or more per- and polyfluoroalkyl substances (PFAS), heavy metals, biological species or any combination thereof. Methods of functionalizing a substrate surface with contaminate-sequestering functionalities that sequester one or more PFAS, heavy metals, or both are also provided. Methods of removing contaminants from contaminate-containing liquids, and devices including the contaminate-sequestering coatings are also provided.

Contaminate sequestering coatings and methods of using the same

A gel polymer electrolyte (GPE) composition and a method of forming the same are provided. The GPE includes a polymer network and an electrolyte composition comprising a deep eutectic solvent (DES) having a eutectic point of less than or equal to 25&#xb0; C. An electrochemical cell including a GPE and a method of forming the same are also provided.

Deep eutectic solvent-based gel polymer electrolytes

Gel polymer electrolyte compositions including a cross-linked three-dimensional polymer network and an electrolyte composition comprising an electrolyte and water are provided. The gel polymer electrolyte compositions can be included in an aqueous electrochemical cell, in which a gel polymer electrolyte can be positioned between an anode and a cathode. Methods of forming a gel polymer electrolyte in the form of a film are also provided. Methods of forming an aqueous electrochemical cell including a gel polymer electrolyte are also provided.

Gel polymer electrolyte compositions and electrochemical cells including the same

A coating system may be configured to be applied to an aluminum-magnesium substrate of an object. The coating system may include a primer configured to reduce the corrosion rate of the aluminum-magnesium substrate and a topcoat configured to resist water and improve solar reflectance of the coating system. The primer may include a silicate and a first additive configured to increase corrosion resistance of the coating system The topcoat may include a siloxane and a second additive configured to reduce solar absorptance of the coating system.

Coating system for aluminum-magnesium alloys

An anti-fouling coating comprising a polymeric compound, wherein a backbone of the polymeric compound is covalently bonded to a quorum sensing inhibitor, and wherein the anti-fouling coating has substantially no bactericidal activity, the quorum sensing inhibitor is substantially non-leaching from the anti-fouling coating, or both.

Anti-microbial coating for the prevention of biofouling

Example methods and articles of manufacture related to electrospun aramid nanofibers are provided. One example method may include forming a resultant solution by reacting a solution of aramids dissolved in a solvent with an electrophile. In this regard, the electrophile may perform a side chain substitution on the dissolved aramids. The example method may further include electrospinning the resultant solution to form an aramid nanofiber.

Growing community of inventors

Odenton, MD, United States of America

Christopher M Hoffman, Jr