Materials Literature
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Large cavities with segregated hydrophobic and hydrophilic domains result from the inclusion of inorganic and organic canons in the hydrothermal synthesis of the blue compound 1. Its structure is shown in the picture on the right.
The orientation characteristics of polypropylene are studied with respect to annealing temperature, orientation temperature, stretch ratio and mode of extension, in order to determine optimum orientation conditions.
Polyimides containing imide and (p-phenoxy)imide side groups were obtained by the interaction of new aromatic tetramines, bis[3-amino-4-(p-aminophenoxy)]arylenes, with equimolar amounts of aromatic tetracarboxylic acid dianhydrides and twofold molar amounts of aromatic dicarboxylic acids anhydrides. Structures and pro…
The aim of this study is to develop a kinetic model for the quantitative evaluation of, and to examine dose dependency in liposome degradation in blood circulation in vivo. Multilamellar liposomes labeled with 3H-inulin were administered intravenously into rats and the time courses of blood concentration and urinary e…
Abstract The use of polymeric materials in building or construction applications is steadily increasing. Therefore, the potential for these materials to be exposed to fire is also increased. The understanding of the pyrolysis characteristics of these materials is thus a necessity. There are many standard tests used to…
X-ray photoemission measurements of high purity CuF2 are presented. XPS studies of Cu compounds in this laboratory have been motivated by the need to identify species on chemically-etched high temperature superconductor surfaces [see R. P. Vasquez, M. C. Foote, and B. D. Hunt, J. Appl. Phys. 66, 4866 (1989)].
An energy filtering transmission electron microscope (EFTEM) has the advantage that, unlike a conventional TEM, it can also utilize the spectroscopic information carried by inelastically scattered electrons, thus making optimum use of all the available information. The design of an EFTEM featuring an Ω‐type imaging el…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTInfrared spectra of phosphorus thiohydrides (HSPH2, HPS2, and HSPS2) in solid argonZofia Mielke and Lester AndrewsCite this: J. Phys. Chem. 1993, 97, 17, 4313–4319Publication Date (Print):April 1, 1993Publication History Published online1 May 2002Published inissue 1 April 19…
Abstract The inherent asymmetry of many powder diffraction profiles has been a principal hindrance in extending the application of diffraction techniques. The resurgence of developments in this area in recent years is primarily the result of the availability of general algorithms permitting computer automation of powd…
Oxidation of chemically vapor‐deposited Si 3 N 4 was studied in dry oxygen between 1923 and 2003 K under a total pressure of 0.1 MPa using a thermogravimetric technique. At 1923 to 1953 K, a parabolic rate mechanism prevailed for the oxidation reaction. From 1973 K, the oxidation reaction exhibited a mixed linear‐para…
SUMMARY In this paper it is shown that CO2 can effectively displace oil from diatomite under countercurrent conditions. A simple model is presented which quantitatively matches the observed oil production. CO2 is postulated to contact the oil due primarily to diffusive transport, and the diffusion coefficient used is…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTAdsorption of molecules onto microporous hematiteTatsuo Ishikawa, Wei Yan Cai, and Kazuhiko KandoriCite this: Langmuir 1993, 9, 4, 1125–1128Publication Date (Print):April 1, 1993Publication History Published online1 May 2002Published inissue 1 April 1993https://pubs.acs.org/…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTChemistry of a cofacial dirhodium diporphyrin: synthesis and reactivity of Rh2DPBJames P. Collman, Yunkyoung Ha, Roger Guilard, and Michel Angel LopezCite this: Inorg. Chem. 1993, 32, 9, 1788–1794Publication Date (Print):April 1, 1993Publication History Published online1 May…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTReevaluating structures for mixed crystals of simple isomorphous salts: sodium chlorate bromate (NaClxBr1-xO3)Prakash Gopalan, Matthew L. Peterson, Guy Crundwell, and Bart KahrCite this: J. Am. Chem. Soc. 1993, 115, 8, 3366–3367Publication Date (Print):April 1, 1993Publicati…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTElectron beam irradiation of polyperfluoroethers: experimental analysis of main-chain degradationJ. Pacansky and R. J. WaltmanCite this: Chem. Mater. 1993, 5, 4, 486–494Publication Date (Print):April 1, 1993Publication History Published online1 May 2002Published inissue 1 Ap…
The normal modes of vibration and their frequencies are calculated for benitoite, a mineral whose crystal structure (space group ${\mathit{D}}_{3\mathit{h}}^{2}$) consists of three-membered silicate rings (${\mathrm{Si}}_{3}$${\mathrm{O}}_{9}$) linked by ${\mathrm{Ba}}^{2+}$ and ${\mathrm{Ti}}^{4+}$ ions. Factor-group…
Amorphous lithium electrolyte thin films, xLi 2 O·ySiO 2 ·zP 2 O 5 , were deposited by rf magnetron sputtering of pure and mixed‐phase lithium silicate, lithium phosphate, SiO 2 , Li 2 O, and Li 2 CO 3 targets, and their compositions were determined using proton‐induced y ‐ray emission spectroscopy, energy‐dispersive…
Quasicrystals and related phases were grown to study their morphology and to try to gain sonie insight into their growth mechanism. Using different characteriz-ation techniques a relationship between morphology, composition and structure of the quasicrystals and related phases is established. This relationship is qual…
The charge storage properties of corona-charged biaxially oriented polypropylene (BOPP) and unoriented polypropylene (PP) films have been studied. Thermally stimulated charge decay and open and short circuit thermally stimulated currents, were measured. A half-value charge decay temperature for BOPP was T/sub 0.4/=118…
X-ray photoemission measurements of high purity CuCl2 are presented. XPS studies of Cu compounds in this laboratory have been motivated by the need to identify species on chemically etched high temperature superconductor surfaces [see R. P. Vasquez, M. C. Foote, and B. D. Hunt, J. Appl. Phys. 66, 4866 (1989)].