Materials Literature
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The weight increases of nylon-6,6 and glass-filled nylon-6,6 after 120 days exposure at 100% and 43% relative humidities were measured. The resultant mechanical properties of nylons were evaluated. Moisture absorption was seen to affect several mechanical properties. Specifically, an increase in moisture absorption re…
Electrically conducting composite films have been prepared from the polymer solution of conducting poly o‐phenylenediamine (PoPD) and nonconducting polyvinyl alcohol (PVA). This composite film showed a very low value of the percolation threshold (0.1 volume percent of the PoPD content) where the conductivity rose shar…
The discharge and charge performance of polyaniline which has a fibrous morphology was investigated from microscopic current density and anion diffusion time constant measurements. The microscopic discharge current density is calculated from the radius of the polyaniline fibril, assuming the true electrode surface are…
Abstract The definition of ‘clay’ was first formalized in 1546 by Agricola. It has been revised many times since, although the fundamentals involving plasticity, particle size, and hardening on firing were retained by most. For an exhaustive account of the history of the definition to 1963, the reader is referred to M…
The Raman spectrum of polycrystalline vaterite is presented and compared to spectra of calcite and aragonite, the other two common CaCO3 polymorphs; Raman spectroscopy easily distinguishes between these three polymorphs. An important feature of the Raman spectrum of vaterite is splitting of both the ν1 and ν4 peaks. T…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTPotential-Dependent Electron Injection in Nanoporous Colloidal ZnO FilmsP. Hoyer and H. WellerCite this: J. Phys. Chem. 1995, 99, 38, 14096–14100Publication Date (Print):September 1, 1995Publication History Published online1 May 2002Published inissue 1 September 1995https://…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTA Real-Time Simultaneous Small- and Wide-Angle X-ray Scattering Study of In-Situ Deformation of Isotropic PolyethyleneMichael F. Butler, Athene M. Donald, Wim Bras, Geoffrey R. Mant, Gareth E. Derbyshire, and Anthony J. RyanCite this: Macromolecules 1995, 28, 19, 6383–6393Pu…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTMolecular Structure and Magnetic Properties of Acetato-Bridged Lanthanide(III) DimersAthanassios Panagiotopoulos, Theodoros F. Zafiropoulos, Spyros P. Perlepes, Evangelos Bakalbassis, Isabelle Masson-Ramade, Olivier Kahn, Aris Terzis, and Catherine P. RaptopoulouCite this: I…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTProtein-Sized Quantum Dot Luminescence Can Distinguish between "Straight", "Bent", and "Kinked" OligonucleotidesRahina Mahtab, Jessica P. Rogers, and Catherine J. MurphyCite this: J. Am. Chem. Soc. 1995, 117, 35, 9099–9100Publication Date (Print):September 1, 1995Publication…
Abstract Monte Carlo modeling of electron‐solid interactions requires a detailed and accurate supply of experimental data on which to base its physics and against which to test its predictions. To meet this need, a collection of data—comprising measurements of secondary and backscattered electron yields, electron stop…
Two approaches have been adopted in attempting to determine the strength of the one-phonon infrared absorption by the B nitrogen aggregate in diamond. On the one hand, we have heat treated purely type IaA specimens with known infrared absorption strengths (and thus also known nitrogen concentrations) to bring about pa…
Jute fiber is an important agricultural product. It is one of the most common natural fibers in Third World countries such as India, China, Bangladesh, etc. The jute industry has special importance in the economy of India and continues to be a major traditional earner of foreign exchange. However, it is facing tough c…