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Austin, TX, United States

McDaniel S.,Reactive Surfaces | Blanton M.D.,University of Southern Mississippi
PPCJ Polymers Paint Colour Journal | Year: 2012

NASA is studying the next steps in human spaceflight beyond low earth orbit. Critical issues that are being addressed include long duration habitation and life support in cis-lunar space. The completed ISS will comprise at least the amount of surface area that would be found inside an average three bedroomed home. This makes available an immense amount of coated surface that can be used to enhance the safety and habitability of crew surroundings if these coatings are functionalised to dynamically and favorably interact with the spacecraft environment. Hydrolytic enzymes called lipases have been explored by Reactive Surfaces as additives for self-synthesizing coatings. Reactive Surfaces has bio-engineered anti-microbial peptides for incorporation into paint formulations and offers them through its ProteCoat product line. Other Reactive Surfaces antimicrobial additives comprise peptides with unique metal binding properties that can either be pulled from nature, designed de novo or selected by screening libraries. Source

McDaniel S.,Reactive Surfaces | Braasch D.A.,University of Southern Mississippi | Williams E.B.,University of Southern Mississippi | Rawlins J.W.,University of Southern Mississippi
PPCJ Polymers Paint Colour Journal | Year: 2014

Reactive Surfaces has successfully engineered an additive specifically to impart self-cleaning functionality to almost any surface. The Reactive Surfaces additive has been successfully reduced to practice in solvent and waterborne coatings that can be applied to virtually any material substrate. The technology occurs when the residue is chemically and catalytically converted, resulting in a surface that is more self-cleaning with use. The chemically converted residue shifts from hydrophobic to more hydrophilic and, thus, increases the compatibility between the residue and the coated surface and decreases the refractive index difference between the coating and the residual fingerprint. The fingerprint appearance is noticeably reduced and is easier to wipe from the surface. Reactive Surfaces has also launched a line of touch screen protective and self-cleaning functional coatings and these appliques are being marketed under the trademark eRACE. Source

Williams E.B.,Reactive Surfaces | Hurt J.,Reactive Surfaces | Moody L.,University of Southern Mississippi | Braasch D.A.,University of Southern Mississippi | Rawlins J.,University of Southern Mississippi
PPCJ Polymers Paint Colour Journal | Year: 2012

Marine cargo vessels commonly transport triacylglycerols as well as various liquid industrial chemicals. The cargo tanks are cleaned between each cargo, with the subsequent direct cost of cleaning and indirect cost of lost service time. In an effort to reduce these costs, collaboration between a manufacturer of tank coatings and Reactive Surfaces at The University of Southern Mississippi was initiated to evaluate the DeGreez additive's ability to enhance the ease of cleaning triacylglycerols from a marine cargo tank surface coating. The chemicals used in these exposure studies were selected to evaluate the enzyme's resistance to denaturation against their different reactive groups. Acetonitrile is an organic nitrile; methanol is an alcohol; acetic acid and stearic acids are short and long chain carboxylic acids, respectively and palm kernel fatty acid distillate (PKFAD) is a distilled material containing short and medium length fatty acids, all of which may interact with the enzyme's binding site. Source

Williams E.B.,Reactive Surfaces | Hurt J.,Reactive Surfaces | Moody L.M.,Reactive Surfaces | Braasch D.A.,University of Southern Mississippi | And 2 more authors.
Waterborne Symposium: Proceedings of the 40th Annual International Waterborne High-Solids, and Powder Coatings Symposium | Year: 2013

Functional coatings are the next generation technology being engineered to reduce costs in maritime transport containers. Cargo containers ship different products that require cleaning between shipments, which takes time and energy. A lipase enhanced tank liner coating was engineered to reduce the cleaning time between cargo loads of large marine transport ships. Here we will discuss the methodology and activity retention of the functional additive DeGreez™ within a two component novolac epoxy tank liner coating. We found that the lipase additive was able to retain functionality in all conditions necessary for incorporation and service in the marine tank liner coating. Source

Williams E.B.,Reactive Surfaces | Carvajal J.C.,Reactive Surfaces | McDaniel S.,Reactive Surfaces | La Maryet M.,University of Southern Mississippi | And 2 more authors.
JCT CoatingsTech | Year: 2012

A properly designed and formulated lipolytic enzyme additive into laminates provides a self-degreasing material that can be prepared using conventional, established production equipment. Laminates were prepared by first infusing a resin formulation into kraft paper and then conditioning the resin in a forced air oven. Manual pressing of samples between aluminum panels was carried out at commercially-acceptable pressures and temperatures. The activity of the enzyme was then determined by following the hydrolysis of the oil-analog p-nitrophenyl acetate using a colorimetric method. Initial results indicated that the enzyme retained complete activity in the resin alone up to 105°C for two hours. When properly conditioned, the lipolytic enzyme not only remained catalytically active after being pressed under manufacturing conditions, but also remained stable in pressed composites stored at room temperature. Source

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