Materials Literature
按标题、摘要、年份、主题和来源检索公开元数据。结果保留作者、摘要、分类与原始来源链接。
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…
Tetragonal zirconia doped with 3 mol% Er 2 O 3 was prepared by the gel‐precipitation wet‐chemical method. The compaction response of ultrafine (∼8.5 nm), calcined, deagglomerated powders was studied. Initial sintering was studied using both isothermal and nonisothermal techniques, and an activation energy of 270 ± 40…
The transient ionic current in a ferroelectric liquid crystal (FLC) cell was measured as a function of applied voltage at different temperatures. The measured current shows a delay peak which decays rapidly to a steady-state value. The steady-state current exhibits a thermal activated behavior with an activation energ…
A technique is developed to measure the transition speed from a field-induced ferroelectric to an antiferroelectric phase upon the release of the applied electric field in the antiferroelectric ceramics. The transition speeds of three members in the antiferroelectric (Pb,La)(Zr,Ti,Sn)O3 family were investigated. Switc…
BaTi 4 O 9 powder prepared by calcining BaCO 3 and TiO 2 powders was sintered to over 97% of theoretical density. Less than 5% Ba 2 Ti 9 O 20 occurred as a second phase in “pure” BaTi 4 O 9 , and Al 2 O 3 impurities from processing formed isolated hollandite (∼BaAl 2 Ti 6 O 16 ) grains, which were identified by fringe…