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The Sticky Problem of Biofouling

[By David Adam]

Like many English words and phrases, the description of something reliable as cop. ....

Black Sea , Oceans General , Great Lakes , Canada General , Caspian Sea , United States , New Zealand , Kelli Hunsucker , Okko Outinen , Yigit Demirel , Royal Navy , Florida Institute Of Technology , International Maritime Organisation , Finnish Environmental Institute , Strathclyde University , Sticky Problem , Florida Institute ,

A Richmond Firm Aims to Help Save the Planet by Cleaning Ocean Vessels With Robots

Ben Kinnaman thinks he can transform the shipping industry and the world's navies by making vessels faster, more fuel-efficient and cheaper to operate. In the. ....

United Kingdom , United States , Saudi Arabia , Lake Champlain , Canada General , James Cameron , Ben Kinnaman , Florida Institute Of Technology , Johns Hopkins University , Us Naval Institute , Office Of Naval Research , University Of Maryland , Davidson College , International Maritime Organization , Small Business Technology , Us Navy , Armach Robotics , Richmond Based Greensea Systems , Morehead City , Naval Research , Florida Institute , Small Business Technology Transfer , Cocoa Beach , Seven Day , Marine Corps , Ben Kinnaman ,

"Biofouling-Resistant Electroactive Polymer Composites for Protein-Trig" by Paul J. Molino, Richard E. Wetherill et al.

Polycationic polymers necessarily contain counterions to maintain the overall charged balance. Upon treatment of polypyrrole (PPy) films with thiol-terminated poly(ethylene glycol) (PEG), the films undergo efficient surface derivatization that reduces a portion of the film, freeing up some of the "dopant"counterions, while forming a brush-like layer. Quartz crystal microbalance (QCM) measurements show that the PEG brushes resist the adhesion of protein (fetal bovine serum (FBS)) as compared to unmodified PPy. When the dopant is polymeric dextran sulfonate, no change in the QCM resonance frequency is observed. However, when the dopant is dodecylbenzene sulfonic acid (DBSA), exposure of the film to protein causes an increase in the resonance frequency, indicating a loss of mass. X-ray photoelectron spectroscopy (XPS) and liquid chromatography-mass spectroscopy (LCMS) measurements demonstrate that the protein triggers the release of the dopant from the composite. Treatment of DB ....

Conducting Polymer , Dodecylbenzene Sulfonic Acid , Drug Release , Poly Ethylene Glycol ,