Twenty-four substances, mainly NIAS, have been tentatively identified in food contact polycarbonate through the application a new, fast, and automated analytical strategy for investigation of unknowns materials. Most compounds were plasticizers, slip agents, antioxidants, ultraviolet stabilizers fragrances, majority them not previously PC The workflow setup includes an intelligent data acquisit...

The authors studied the performance of laser protective eyewear currently in use at the Lawrence Livermore National Laboratory: a goggle with a cellulose propionate filter from Glendale Protective Technologies and a goggle with a glass optical filter from Spectra Optics. A new polycarbonate optical filter material from Glendale was studied also, and its performance was compared with that of the...

The effect of density (relative densities 0.33 to 0.90) on the impact behavior of microcellular polycarbonate (PC) was investigated. Cell size and foaming gas content were also considered. Flexed-beam Izod impact tests were conducted and the impact strength of these foams appears to be a strong function of both density and cell size. The impact strength was observed to improve over the unproces...

We have conducted a study of toughening mechanisms in rubber modified polycarbonate systems in order to evaluate the sequence of deformation events which improve fracture toughness. We conclude that cavitation of the rubber particles occurs first, followed by massive shear yielding of the matrix material. The size and shape of the deformation zone created in front of the crack is governed by th...

Here we present the detection of ultralow concentrations of biomolecules in a device made from a polycarbonate membrane containing a network of gold nanowires and using a "contactless" impedance tomoscopy technique. The sensor comprises a thin dielectric layer with two parallel band electrodes on the one side and a microchannel containing gold nanowires onto which the adsorption of antibodies o...

The effect of cell size on the out of plane compressive crushing response of circular cell polycarbonate honeycomb is presented. Over 100 experiments were conducted on specimens ranging in size from 1 to 169 cells (number of cells=N). Experiments showed that for N<19 there was a significant increase in crushing load. The maximum crushing load was observed where N=7. Finite element (FE) analysis...

OBJECTIVE To assess indicative trends in the use of protective eyewear by Australian squash players and their attitudes towards its use since 1989. METHODS Data were extracted from three Australian surveys of squash players conducted in 1989, 1995, and 2000. Responses to directly similar attitudinal questions relating to protective eyewear use from each survey were compared. The proportion of...

We report the fixation of carbon dioxide (CO2) into novel rubber polymers based on polycarbonate domains. Our strategy consisted in atom-efficient terpolymerisation CO2 with long-alkyl-chain epoxides and unsaturated...

In this paper, the effect of nano zirconia particles on damping characteristics polycarbonate composites was investigated experimentally. The were added to matrix with five different weight percentage (wt %). Polycarbonate Nanocomposites filled pristine and modified ‎Zirconium dioxide prepared by simple melt compounding. All samples ‎were an injection molding process. studied before after damag...

The procedure currently used for isolating legionellae from environmental samples recommend filtration through a 0.2-microns-pore-size polycarbonate filter. In this study we evaluated the performance of 23 other filters composed of various materials and having various pore sizes. We prefer the 0.2-micron-pore-size Gelman Supor filter because of its high level of recovery, faster filtration rate...