Materials Literature
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ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTElectrochemical Synthesis of Extended TTFD. Lorcy, R. Carlier, A. Robert, A. Tallec, P. Le Magueres, and L. OuahabCite this: J. Org. Chem. 1995, 60, 8, 2443–2447Publication Date (Print):April 1, 1995Publication History Published online1 May 2002Published inissue 1 April 1995…
Abstract Diblock copolymers composed of poly(ε‐caprolactone) and poly(L‐lactide) were synthesized via sequential living ring‐opening polymerization of ε‐caprolactone and L‐lactide in dichloromethane initiated by Y 5 (μ‐O)(O i Pr) 13 (yttrium isopropoxide). A series of diblock copolymers was synthesized with ε‐caprolac…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTMolecular Motions and Viscoelasticity of Amorphous Polymers near TgTadashi Inoue, Marcus T. Cicerone, and M. D. EdigerCite this: Macromolecules 1995, 28, 9, 3425–3433Publication Date (Print):April 1, 1995Publication History Published online1 May 2002Published inissue 1 April…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTPolymer Films on Electrodes. 26. Study of Ion Transport and Electron Transfer at Polypyrrole Films by Scanning Electrochemical MicroscopyMeral Arca, Michael V. Mirkin, and Allen J. BardCite this: J. Phys. Chem. 1995, 99, 14, 5040–5050Publication Date (Print):April 1, 1995Pub…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTEffects of Water-Soluble Spacers on the Hydrophobic Association of Fluorocarbon-Modified Poly(acrylamide)F. S. Hwang and T. E. Hogen-EschCite this: Macromolecules 1995, 28, 9, 3328–3335Publication Date (Print):April 1, 1995Publication History Published online1 May 2002Publis…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTA Re-examination of the Relation between the Melting Temperature and the Crystallization Temperature: Linear PolyethyleneRufina G. Alamo, Brent D. Viers, and L. MandelkernCite this: Macromolecules 1995, 28, 9, 3205–3213Publication Date (Print):April 1, 1995Publication Histor…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTDevelopment of Particle Morphology in Emulsion Polymerization. 1. Cluster DynamicsLuis J. Gonzalez-Ortiz and Jose M. AsuaCite this: Macromolecules 1995, 28, 9, 3135–3145Publication Date (Print):April 1, 1995Publication History Published online1 May 2002Published inissue 1 Ap…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTMorphology Control of PbS Nanocrystallites, Epitaxially Grown under Mixed MonolayersJianping Yang and Janos H. FendlerCite this: J. Phys. Chem. 1995, 99, 15, 5505–5511Publication Date (Print):April 1, 1995Publication History Published online1 May 2002Published inissue 1 Apri…
Abstract Salting‐out phase equilibria are reported for lysozyme and α‐chymotrypsin from concentrated ammonium‐sulfate solutions. Supernatant and dense‐phase protein concentrations and the resulting protein partition coefficients are given as a function of solution pH and ionic strength. Phase equilibria with a trivale…
This article reports the fabrication of thick films of lead zirconate titanate (PZT) on platinum-buffered silicon substrates by screen printing. Crack-free films, up to 12 μm on a single pass, show a dielectric permittivity of 200, tangent losses of 0.05, remanent polarization of 2.5 μC/cm2, and coercive field of 40 k…
We have studied the effect of the polymer tilt angle for pretilt angle generation in nematic liquid crystal, 4-cyano-4 ′ -n-penthylbiphenyl (5CB) on rubbed polyimide surfaces. The polymer tilt angle was determined by measuring induced optical retardation produced in rubbed polyimide (PI) surfaces by rubbing. We sugges…
In a discrete phenomenological description of tilted smectic phases, the order parameter, which describes the magnitude and the direction of the tilt of the molecules, is defined for each smectic layer. The free energy expansion in terms of order parameter takes into account interactions between nearest and next neare…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTThe Bare and Acetylene Chemisorbed Si(001) Surface, and the Mechanism of Acetylene ChemisorptionQiang Liu and Roald HoffmannCite this: J. Am. Chem. Soc. 1995, 117, 14, 4082–4092Publication Date (Print):April 1, 1995Publication History Published online1 May 2002Published inis…
Controlled studies of the effect of moisture content on the corrosivity of toward common materials of construction were performed. Coupons of EP316L stainless steels, two types of stainless steel welds, and Hastelloy C‐22 were exposed to containing 0.5, 10, 100, and 1000 ppm moisture. The coupons were exposed to for 1…
Abstract Non‐isothermal TG curves for four samples of polyvinyl nitrate (PVN), having 15.71%, 14.95%, 13.34% and 11.76% nitrogen contents, were obtained at 5°C/min heating rate. The weight loss of PVN samples depends directly on their % N and occurs in three or more temperature zones. For PVN with 15.71% N (max 15.73%…
Knowledge of the kinetics of phenolic resin pyrolysis is critical to the accurate modeling of ablatives used in rocket nozzle and re-entry environments. Most employ thermogravimetry to study this phenomena. Nearly all of the previous studies on ablative materials have utilized fairly slow heating with respect to the u…
Summary The initial results of the first dedicated confocal scanning laser microscopy (CSLM) study of fluid inclusions in quartz are presented. CSLM imaging of a large inclusion shows the quartz crystal to contain numerous small (< 1 μm), highly reflective inclusions arranged along planes in at least two directions…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTEffect of Pretreatment on Surface Area, Porosity, and Adsorption Properties of a Carbon BlackNalini Krishnankutty and M. Albert VanniceCite this: Chem. Mater. 1995, 7, 4, 754–763Publication Date (Print):April 1, 1995Publication History Published online1 May 2002Published ini…
Using a combination of biochemical, physical, and genetic techniques, we have shown that the umpA gene of Escherichia coli is allelic with the lgt (phosphatidylglycerol:prolipoprotein diacylglyceryl transferase) of Salmonella typhimurium. These genes are essential for the viability of the respective organism and exhib…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTCrystalline Homopolymer-Copolymer Blends: Poly(tetrafluoroethylene)-Poly(tetrafluoroethylene-co-perfluoroalkylvinyl ether)J. Runt, L. Jin, S. Talibuddin, and C. R. DavisCite this: Macromolecules 1995, 28, 8, 2781–2786Publication Date (Print):April 1, 1995Publication History…