polymer – Page 2 – TechConnect Briefs

Anisotropic Wetting Behaviour of Modified 3D Printed Micro-Structured Polymer Surfaces for Water Harvesting

Cook M.J., Johnston J.H., Leveneur J., Victoria University of Wellington, NZ

We present an attractive new technology for the design and fabrication of micro-structured water harvesting surfaces through a unique combination of 3D printing and hydrophilic/hydrophobic surface modification. For many years, researchers have examined the wetting [...]

A novel demonstration of the dichroic effect exhibited by gold nanoparticles and their incorporation into polymer materials

Wrigglesworth E.G., Johnston J.H., Victoria University of Wellington, NZ

Gold nanoparticles have long been utilised for their attractive colours. A well-known example is the Lycurgus cup, dated at the 4th century, which appears red when viewed in transmitted light and green in reflected light [...]

Controlled Release Polymers for Remediation of Contaminated Groundwater

Carpenter A., Gause C., Luster-Teasley S., AxNano, US

The EPA estimates that one out of every four Americans lives within three miles of a hazardous waste site. Over 450,000 brownfield sites are awaiting remediation with 1,280 sites on the National Priorities List (NPL). [...]

Advanced Materials for self-healing electrical insulation systems

Basu S., German I., Rhodes R., Stevens G.C., Thomas J., Gnosys Global Ltd, UK

Recently, there have been significant advancements in the development of self-healing materials. When damaged, these materials are capable of autonomously repairing the damage, restoring the pre-damage characteristics of the material and preserving asset integrity. This [...]

Characterization of Crosslinked Polymer Nanoparticles by Size-Exclusion Chromatography Coupled to Differential Viscometery

Kalantar T.H., Meunier D.M., Lyons J.W., Kiefer J.J., Niu Q.J., Li Y., Bouck K.J., Tucker C.J., Russo P.S., Cueto R., Dow Chemical Company, US

Conventional size-exclusion chromatography (SEC) and size-exclusion chromatography coupled to differential viscometry (SEC/DV) methodologies have been developed and applied to the dilute suspension characterization of solvent-swollen crosslinked unimolecular polymeric nanoparticles (PNPs) in the 5 ~ 50 [...]

Scalable Polymer Patterning (SP2)

Mead J., Barry C., University of Massachusetts-Lowell, US

Polymeric materials are easily fabricated into a wide array of structures for numerous applications. The bulk properties can be tailored for preparing novel structures and substrates for use as substrates for 3D printing. Particularly, the [...]

Nonclinical evaluation of heparin binding copolymer – HBC1 for restoring of blood coagulation after heparin treatment

Kalaska B., Sokolowska E., Kaminski K., Miklosz J., Shin-ichi Y., Błazejczyk A., Wietrzyk J., Kasacka I., Szczubialka K., Pawlak D., Nowakowska M., Mogielnicki A., Medical University of Bialystok, PL

The incredible progress and wide use of various medical devices during intravascular or cardiac interventions increased the need for administration of anticoagulants, such as heparins. Protamine sulfate – a protein isolated from salmons is the [...]

An Anti-reflective and Anti-Soiling Coating for Photovoltaic Panels

Xu Q.F., Zhao Y., Kujan B., Lyons A., ARL Designs LLC, US

Photovoltaic panels face two major challenges in maximizing and maintaining their electrical output – reflections and soiling of the outer glass surface. To address these challenges, we developed a durable, transparent high-performance polymeric coating on [...]

Natural polyphenols as pro-ecological antioxidants and pigments for polymer composites

Masek A., Zaborski M., Lodz University of Technology, PL

In our studies, we propose the use of natural, pro-ecological substances such as polyphenols to protect elastomers against ageing. This natural compounds were incorporated into ethylene-norbornene (COC-material is commercially available under the name of TOPAS); [...]

Effect of Temperature on Surface Degradation and Nanoparticle Release of Nano-SiO2 Epoxy Coatings under UV Radiation

Tien C.C., Chang A.C.-H., Liu B.H.-C., Sung L.P., National Cheng Kung University, US

To investigate the mechanisms of polymer degradation, polymer matrix, epoxy, with the addition of nanosilica (SiO2), was chosen. In this study an outdoor environment was simulated in the NIST (Nation Institute of Standards and Technology) [...]