US – Page 28 – TechConnect Briefs

The aging and release of pristine and functionalized carbon nanotubes from epoxy-nanocomposites during accelerated weathering

Sahle-Demessie E., Han C., Zhao A., Gagliardi N., U.S. Environmental Protection Agency, US

Epoxies are widely used in various applications, including coatings, electronics insulations, and waterproofing applications due to their excellent properties such as good adhesion, electrical insulation, and heat resistance along with the strong mechanical property. Currently, [...]

Update on evaluation of enhanced darkfield microscopy and hyperspectral mapping for analysis of airborne nanoparticulate collected on filter-based media

Neu-Baker N.M., Eastlake A., Brenner S.A., State University of New York Polytechnic Institute, College of Nanoscale Science, US

Current best-known methods for engineered nanomaterial (ENM) exposure assessment in occupational environments include the capture of airborne ENMs onto filter media.1–3 The current standard method for the analysis of filter media is direct visualization via [...]

Nanoparticles and Nano-polymer Composite Interactions with Microbial Biofilm

Sahle-Demessie E., Jing H., Sorial G.A., U.S. Environmental Protection Agency, US

Environmental biofilms are efficient binding matrices for nanoparticles (NPs) and this can be attributed largely to the extracellular polymeric substances (EPS) that hold biofilms together. There is a significant accumulations of NPs occurred in biofilms [...]

Wear-resistant coatings for solar cell panels

Song K., Arizona State University, US

This research studied the relationship between nano-particle orientation and wear resistance. Nano-particle orientations were tailored through flow-assisted spray technical and parallel, randomly distributed, and preferentially vertical configurations were achieved. Surface damage tests were managed using [...]

Solid-Liquid Work of Adhesion

Gulec S., Tadmor R., Das R., Liu J., N'guessan H., Shah M., Wasnik P., Yadav S.B., Lamar University, US

Centrifugal Adhesion Balance (CAB) is used for measuring directly solid-liquid work of adhesion by inducing an ever-increasing normal force which pulls on the droplet while keeping zero lateral force until the liquid-solid contact area starts [...]

Fabrication of superhydrophobic PVDF membranes with PTFE nano-film surface coatings

Abdulhussein A.T., Kannarpady G.K., Biris A.S., University of Arkansas at Little Rock, US

Due to their outstanding corrosion resistance, wear resistance, thermal stability, and chemical stability, polyvinylidene fluoride (PVDF) membranes are extensively used for membrane distillation, membrane contactor, oil/water separation, and wastewater treatment. Modifying a PVDF membrane with [...]

Smart Antimicrobial Coating with Endless Applications

Tiwari A., Chaturvedi A., FLORA COATINGS, US

Historically corrosion protection has been achieved through use of hexavalent chromium ions along with heavy metals in paints. These chemical ingredients are highly toxic to environment and human health. In-fact, Hex-Chrome is a known human [...]

Molecular sieve membranes made in thin sheet form

Liu W., Molecule Works Inc., US

A new molecular sieve membrane technology will be introduced in this presentation from fundamental designs to performance characteristics. Molecular sieve materials are well known for their molecular sieving functions, i.e., distinguishing individual molecules based on [...]

Anti-Fouling CVD Coatings and Surface Modifications for Industrial Applications

Patterson L., Smith D., SilcoTek Corporation, US

Academia has witnessed a surge in novel coating materials and methods to control the behavior of surfaces in a variety of applications, specifically where non-stick properties (low surface energy) are desired. However, few of these [...]

Brand Protection and Authentication Enabled By Frangible Polymer Technology

DiMaio J., Tetramer Technologies, LLC, US

Tetramer has developed a unique technology to produce pre-stressed frangible, polymeric coatings. These can be applied using traditional thin-film coating and curing techniques or more advanced 3D-printing techniques. The ability to produce stable, pre-stressed films [...]