Papers – Page 29 – TechConnect Briefs

Retention of urea and caffeine on copper MOF

Zarate-Rubio J., Ortiz Elba, Solis Hugo, Medina-Velazquez D.Y., Loera-Serna S., Universidad Autonoma Metropolitana-Azcapotzalco, MX

The [Cu3(BTC)2] (BTC = 1,3,5-benzenetricarboxylate), also known as HKUST-1(or MOF-199), is one of the most cited metal-organic framework (MOF) because it has a large surface area, high pore volume, high chemical stability and also the [...]

Mexican natural zeolites: A low cost alternative to pigment retention

Loera-Serna S., Ortiz Elba, Solis Hugo, Medina-Velazquez D.Y., Universidad Autonoma Metropolitana-Azcapotzalco, MX

Several materials such as synthetic zeolites, clays and aluminas were studied as sorbent pigments. Majority of materials need pre-treatment to be capable to absorb molecules on the porous structure. These treatments include thermal treatment, washing [...]

Strategy for Establish an Effective Mid-stream Supply Chain of Natural Gas Hydrate with Low Energy Consumption Type Container Carrier

Kagn H.J., Shin M-S, Korea Research Institute of Ships and Ocean Engineering (KRISO), KR

A number of countries and institutions are attempting to develop Natural Gas Hydrate (henceforth NGH) related technologies since NGH serves economic feasibility for mid-size gas-field development. However, there are several technical, economic and procedural problems [...]

Aerosolization of Carbon Nanotubes Using an Acoustic Generator: Particle Generation and Properties

Ku B.K., Eileen Birch M., CDC/NIOSH, US

With increasing applications and global production of carbon nanomaterials, there is a growing concern about workplace exposure. The National Institute for Occupational Safety and Health (NIOSH) has recommended a working lifetime exposure limit (REL of [...]

A Framework for Identifying Sustainability Performance Targets for Nanomaterials

MacCuspie R.I., Micher L., Nance J., Watkins J., Hyman H., Srinivasan S., Dhau J., Yakymyshyn C., Drake C., Florida Polytechnic University, US

A current challenge facing the application of nano-enabled products is how to evaluate sustainable solutions and develop performance criteria? This work describes the application of an Input-Process-Output (IPO) model as a framework for a life-cycle [...]

Concern-Driven Approach to human health risk assessment of nanomaterials: A Nanoparticle Screening Assessment Framework

Bernatchez S., Afghan A., Lai D., Sayre P., Hill M., New Substances Assessment and Control Bureau, CA

The framework proposed here was developed under the Canada-US Regulatory Cooperation Council (RCC) Nanotechnology Initiative and represents a concern-driven approach to focus human health concerns and additional testing requirements for nanoparticles based on their physical [...]

Dose- and Time-dependent Effects of Sub-chronic Functionalized MWCNT Exposure on Human Mesothelial Cell Neoplastic Transformation Potential

Stueckle T.A., Davidson D.C., Derk R., Gracheck P., Wu N., Rojanasakul Y., Wang L., National Institute for Occupational Safety and Health, US

Multi-walled carbon nanotubes (MWCNTs) are characterized by asbestos-like fiber morphology and surface chemistries. Physicochemical properties of MWCNTs that influence pleural mesothelioma potential are unknown, but critically needed to enhance safe-by-design nanotechnology. We hypothesized that surface [...]

Characterization of Nanoparticles in Wood Coating Stains and OSHA HazCom Compliance

Saldivar A., Burrelli L., AMA Analytical, Inc., US

Recent marketing of manufactured products for the construction trades has touted the use of engineered nanoparticles in there formulations. For this study, commercially available wood waterproofing stains were obtained that specifically identified “Nano Particle Technology” [...]

Unexpected interactions of nanoparticles with endothelial and epithelial cells

Leong D.T., National University of Singapore, SG

Nanoparticles regardless as subjects of nanotoxicity or nanomedicine studies will inevitably interact with endothelial and epithelial cells. In the case of nanomedicine, while these cells are usually not the intended target, nanoparticles first interact with [...]

Preparation of ion group functionalized diblock copolymers and examination of their thermogelling properties

Lee B.K., Kwon D.Y., Kwon J.S., Park J.H., Kwon D.Y., Kwon J.S., Kim J.H., Kim M.S., Oh S.H., Kim J.H., Kim M.S., Ajou University, KR

To investigate thermogelling behavior, in this study, methoxy polyethylene glycol-b-[poly(ε-caprolactone)-ran-poly(6-chloride-ε-caprolactone) (PCL-ran-PfCL)] (PCL-Cl) diblock copolymers were designed such that the PfCL content in the PCL segment was varied. The PCL-Cl diblock copolymers were derivatized by introducing [...]