Materials Literature
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We describe a well-tolerated blood pool contrast agent with extended recirculatory half-life based on paramagnetic polymerized liposomes (PPLs). PPLs were constructed from a new type of polymerizable lipid molecule that has a derivative of gadopentetate dimeglumine as the hydrophilic head group and diacetylene groups…
In recent years aromatic polyether ketones have achieved a remarkable position among other thermoplastic polymers because of their unique combination of toughness, stiffness, thermooxidative stability, chemical and solvent resistance, electrical performance, flame retardancy, and retention of physical properties at hi…
The high strain rate behavior of two different tungsten-based composites (WBCs) has been investigated using a combination of compression Kolsky bar and high strain rate pressure—shear plate impact experiments. The two materials investigated are (a) a W/(WNiFe) “heavy alloy” containing 91 wt.% W with a WNiFe matrix…
Recent studies of amorphous solid materials have revealed the possibility that more than one distinct amorphous phase may be formed from the same substance. In analogy with the phenomenon of crystalline polymorphism, this behavior has been termed “amorphous polymorphism”. We review the experimental manifestation of am…
The liquid silicone RTV (room temperature vulcanizing) coating has gained considerable popularity since the first field trial in 1973 with an experimental product and the first large-scale application in 1987 with a commercial product. Although few problems have been encountered with the first generation coating, it b…
A polymer can be partially crystalline, such as polyethylene (PE), isotactic polypropene (it-pp), and poly (ethylene terephthalate) (PET), or noncrystalline, such as commercially available atactic poly (methyl methacrylate) (PMMA) and polystyrene (a-PS); partially crystalline polymers are customarily called crystallin…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTThe Structure of Cellulose II: A RevisitS. Raymond, Aa. Kvick, and H. ChanzyCite this: Macromolecules 1995, 28, 24, 8422–8425Publication Date (Print):November 1, 1995Publication History Published online1 May 2002Published inissue 1 November 1995https://pubs.acs.org/doi/10.10…
The influence of the distortion and the extra-carrier injection upon the first-order metal-insulator transition has been investigated in electron- and hole-doped series of ${\mathit{R}}_{1\mathrm{\ensuremath{-}}\mathit{x}}$${\mathit{A}}_{\mathit{x}}$${\mathrm{NiO}}_{3}$ perovskites. The temperature-driven metal-insula…
Abstract The oxidative polymerization of o ‐phenylenediamine was studied under a variety of conditions. At room temperature the reaction of o ‐phenylenediamine with ammonium persulfate in HCl acid medium gives a dimer, 2,3‐diaminophenazine. The same reaction at 70°C results in a trimer with an open structure, [3‐amino…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTControlling Intermolecular Interactions between Metallomesogens: Side-Chain Effects in Discotic Copper, Palladium, and Vanadyl Bis(.beta.-Diketonates)Hanxing Zheng, Chung K. Lai, and Timothy M. SwagerCite this: Chem. Mater. 1995, 7, 11, 2067–2077Publication Date (Print):Nove…
We carry out computer simulations of phase separation in diblock copolymer-homopolymer mixtures. The homopolymer chains are assumed to be compatible with one of the blocks of the copolymers whereas the two blocks of the copolymer chains are mutually incompatible. One of the characteristic features of this system is th…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTMechanism of Proton Insertion and Characterization of the Proton Sites in Lithium Manganate SpinelsBrett Ammundsen, Deborah J. Jones, Jacques Roziere, and Gary R. BurnsCite this: Chem. Mater. 1995, 7, 11, 2151–2160Publication Date (Print):November 1, 1995Publication History…
A phenomenological model for predicting phase diagrams of a binary nematic mixture containing side chain liquid crystalline polymers and/or low molar mass liquid crystals has been proposed by combining Flory–Huggins free energy of isotropic mixing and Maier–Saupe free energy for nematic ordering of the nematogens. Two…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTAtomic Shell Approximation: Electron Density Fitting Algorithm Restricting Coefficients to Positive ValuesPere Constans and Ramon CarboCite this: J. Chem. Inf. Comput. Sci. 1995, 35, 6, 1046–1053Publication Date (Print):November 1, 1995Publication History Published online1 M…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTDiffuse X-ray Scattering from Disordered CrystalsT. R. Welberry and B. D. ButlerCite this: Chem. Rev. 1995, 95, 7, 2369–2403Publication Date (Print):November 1, 1995Publication History Published online1 May 2002Published inissue 1 November 1995https://pubs.acs.org/doi/10.102…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSingle-Event Rate Parameters for Paraffin Hydrocracking on a Pt/US-Y ZeoliteGlenn D. Svoboda, Erik Vynckier, Birgit Debrabandere, and Gilbert F. FromentCite this: Ind. Eng. Chem. Res. 1995, 34, 11, 3793–3800Publication Date (Print):November 1, 1995Publication History Publish…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTInteractions between Water-Soluble Cellulose Derivatives and Surfactants. 1. The HPMC/SDS/Water SystemStefan NilssonCite this: Macromolecules 1995, 28, 23, 7837–7844Publication Date (Print):November 1, 1995Publication History Published online1 May 2002Published inissue 1 Nov…
The critical crystallite size for the cubic (c-) to tetragonal (t-) phase transformation of ultrafine BaTiO 3 crystallites was examined. Crystallites were prepared by calcination of barium titanyl oxalate tetrahydrate (BTOT) at various temperatures as to obtain crystallites with different sizes. The c- BaTiO 3 crystal…
Often, blends of two immisible polymers have a morphology with one component building a matrix in which spherical inclusions of the other component are embedded. The rheological response of such blends contains an elastic contribution which can be attributed to the form relaxation of the inclusions. This process has a…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTRheology and Shear-Induced Alignment of Lamellar Diblock and Triblock CopolymersBrian L. Riise, Glenn H. Fredrickson, Ronald G. Larson, and Dale S. PearsonCite this: Macromolecules 1995, 28, 23, 7653–7659Publication Date (Print):November 1, 1995Publication History Published…