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Abstract A theoretical framework is provided for generalizing the inferences drawn from the results of earlier experimental studies of kinetics of crystallization in oriented poly(ethylene terephthalate). The framework is obtained by combining extensions of classical nucleation theories in polymers 3,4 and a theory of…
Abstract The discharge reaction of FeOCl was investigated and the discharge products were identified by XRD and EPMA. Lithium and solvent co-intercalate into FeOCl during the early stage of the discharge, in the low lithium concentration range in the FeOCl solid matrix (LixFeOCl, x<0.6). Such compounds are stab…
The lower halides of zinc, namely, ZnCl 2 , ZnBr 2 , and ZnI 2 , may act as network formers in glasses that also contain modifying alkali halides such as KCI, KBr, KI, NaI, or CsI. Compositions which contain only Br − or I − anions are of particular interest because of their extended infrared transmission, which inclu…
Rigorous simulation of electromagnetic scattering from wafer topography has been achieved using the massively parallel Connection Machine CM-2. The program, based on a finite-difference time domain algorithm, can be applied to key structures in lithography and alignment with interpenetrating, isolated, or nonperiodic…
Abstract The dynamic storage modulus of uncured silica-filled silicone rubber increases sharply when a critical filler loading is reached. A similar behavior has been observed for the conductivity in the same compounds. The experimental data fit a percolation law fairly well, and microscopy confirms the formation of a…
A "polymerization-crosslinking" treatment to impart durable press properties to cotton fabric has been investigated, using N-methylolacrylamide as a polymerizing resin and dimethyloldihydroxyethyleneurea (DMDHEU) and urea formaldehyde as crosslinkers. Nonconventional treatment techniques such as "wet fixation" and "st…
It is shown that heat flow is severely decreased in transient phenomena, due to nonlocal effects. The case of phonon transport in a steep temperature gradient is discussed in detail for semiconductors. Fixed end temperatures and an initial heat pulse propagating in a homogeneous sample are considered as boundary condi…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTMonomer concentration effects on the kinetics and mechanism of the boron trichloride catalyzed solution polymerization of hexachlorocyclotriphosphazeneMarie Kayser Potts, Gary L. Hagnauer, Michael S. Sennett, and Geoffrey DaviesCite this: Macromolecules 1989, 22, 11, 4235–42…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTControl of nitrogen oxide (NOx) emissions by selective catalytic reduction with hydrogen over hydrophobic catalystsL. Fu and Karl T. ChuangCite this: Energy Fuels 1989, 3, 6, 740–743Publication Date (Print):November 1, 1989Publication History Published online1 May 2002Publis…
Abstract An analysis of crystal binding and structural phase transition is presented using an analytical potential form for the overlap repulsive energy derived by Harrison from quantum mechanical considerations. The potential model is applied to calculate the cohesive energies, bulk modulus, and its pressure derivati…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSilicon-directed decarbonylation of trimethylsilyl .beta.,.gamma.-enals by photolysisJih Ru Hwu and Paul S. FurthCite this: J. Am. Chem. Soc. 1989, 111, 24, 8834–8841Publication Date (Print):November 1, 1989Publication History Published online1 May 2002Published inissue 1 No…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTA study of the required hydrophile-lipophile balance for emulsificationA. Graciaa, J. Lachaise, G. Marion, and Robert S. SchechterCite this: Langmuir 1989, 5, 6, 1315–1318Publication Date (Print):November 1, 1989Publication History Published online1 May 2002Published inissue…
This paper describes and illustrates a suite of programs which have been written for the computer-aided design of three-dimensional electron optical systems. The programs can analyze electrostatic systems containing conductors and dielectrics with specified surface charge distributions and also magnetic systems with p…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTHydrogen bonding in poly(amic acid)sB. Thomson, Y. Park, Paul C. Painter, and R. W. SnyderCite this: Macromolecules 1989, 22, 11, 4159–4166Publication Date (Print):November 1, 1989Publication History Published online1 May 2002Published inissue 1 November 1989https://pubs.acs…
The temperature dependences of the 1 H spin-lattice relaxation time T 1 , the linewidth parameter T 2 *. and the second moment M 2 of 1 H NMR absorption were measured for solid (CH 3 NH 3 )PbX 3 (X: CI. Br). In the room-temperature cubic phases of both salts, and also in the high-temperature tetragonal phase of (CH 3…
The small-angle scattered intensity functions I(h) were analyzed for asymmetric bodies of thin disks (TD; R≫2L), narrow rods (NR; 2L≫R), and prolate (PE; va≫a) and oblate ellipsoids of revolution (OE; va≪a). h, R, and 2L, 2a, and 2av are the magnitude of scattering vectors defined as h=(4π/λ)sin θ, with 2θ and λ being…
Abstract The forces between muscovite mica surfaces have been measured in water and in NaCl and CaCl 2 solutions. Above a critical electrolyte concentration, strong, short‐range repulsive forces arise which are not predicted by DLVO theory. These forces have been identified as hydration forces and have an oscillatory…
Transmission electron microscopy studies have recently shown that low-energy cluster-beam deposition allows the formation of higher-quality films compared with the classical molecular-beam deposition. This work presents preliminary results obtained with antimony deposits.
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTFacile regioselective ligand substitution for the in-plane bridging acetates in octakis(.mu.-acetato-O,O')tetraplatinum(II)Tadashi Yamaguchi, Yoichi Sasaki, Akira Nagasawa, Tasuku Ito, Nobuaki Koga, and Keiji MorokumaCite this: Inorg. Chem. 1989, 28, 24, 4311–4312Publication…
Abstract An extensive study of the coagulation of cellulose from cellulose/ammonia/ammonium thiocyanate solutions is presented. The effect of major variables upon the coagulation process for cellulose solutions is reported. Microscopic observations of the moving boundary associated with the coagulation were performed…