Topic
Polycarbonate
About: Polycarbonate is a research topic. Over the lifetime, 14032 publications have been published within this topic receiving 141740 citations. The topic is also known as: PC & Polycarbonate, PC.
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TL;DR: In this paper, the strength, fracture toughness and interfacial adhesion of the titania film on polycarbonate substrates with and without a water-plasma treatment has been studied using in situ observation during micro-tensile testing.
45 citations
Patent•
18 Jan 1989TL;DR: A container comprised of an inner aromatic polycarbonate layer, an outer aromatic poly carbonate layer and an intermediate amorphous polyamide layer between the inner polycarbonately layer and the outer polycarbonates layer is described in this paper.
Abstract: A container comprised of an inner aromatic polycarbonate layer, an outer aromatic polycarbonate layer, and an intermediate amorphous polyamide layer between the inner polycarbonate layer and the outer polycarbonate layer. The amorphous polyamide intermediate layer provides the container with enhanced processability, excellent gas barrier properties and hot fill capabilities.
45 citations
TL;DR: In this article, the variations of the relaxation times are investigated above and below the glass transition temperature of a model amorphous polymer, the polycarbonate, using three different techniques (calorimetric, dielectric and thermostimulated currents) to achieve this goal.
45 citations
TL;DR: The tensile properties of coextruded multilayer composites comprised of predominantly 49 alternating layers of polycarbonate (PC) and polystyrene- acrylonitrile (SAN) were investigated in the bulk and microscopically as discussed by the authors.
Abstract: The tensile properties of coextruded multilayer composites comprised of predominantly 49 alternating layers of polycarbonate (PC) and polystyrene- acrylonitrile (SAN) were investigated in the bulk and microscopically. The bulk was characterized by three types of behaviour: brittle fracture at low strains, ductile yielding with fracture during neck formation, and formation of a stable neck followed by drawing to high extension. Optical microscopy was utilized to correlate deformation mechanisms within each phase to the observed modes of deformation in the bulk. Optical microscopy showed that in all cases the initial irreversible deformation event was the formation of cracks or crazes in the SAN layers. Good adhesion between the layers resulted in the subsequent initiation of shear bands in the polycarbonate layers at the craze tips. Interaction of crazes and shear bands produced an expanded damage zone ahead of the propagating crack which delocalized the stress and delayed fracture. The ultimate mode of fracture depended on the relative thickness of the SAN and PC layers, as determined by the composition, and the strain rate.
45 citations
TL;DR: In this article, the uniaxial anisotropy energy of arrays of submicronic (30-500 hm) Ni wires synthesized by electrodeposition into cylindrical pores of track-etched polycarbonate membranes is studied as a function of temperature.
Abstract: The uniaxial anisotropy energy of arrays of submicronic (30-500 hm) Ni wires synthesized by electrodeposition into cylindrical pores of track-etched polycarbonate membranes is studied as a function of temperature. At room temperature, the uniaxial anisotropy is equal to the shape anisotropy whereas an additional contribution, that reinforces the wire axis as an easy axis is evidenced at low temperature. This additional contribution is demonstrated to find its origin in magnetoelastic effects conjointly induced by the Ni and polycarbonate thermal-expansion coefficients mismatch and by the low volume fraction of Ni in Ni/polycarbonate samples.
45 citations