Materials Literature
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Abstract A self-supporting, multilayered film which was prepared from an aqueous dispersion of montmorillonite and orthophosphoric acid (H3PO4) remained intact even in hot water and maintained the ion exchange capacity similar to that of the original montmorillonite powder. An ammonium surfactant (CTAB) was intercalat…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTEvidence for reentrant structural-phase transition in DCNQI-copper systemHayao Kobayashi, Hiroshi Sawa, Shuji Aonuma, and Reizo KatoCite this: J. Am. Chem. Soc. 1993, 115, 17, 7870–7871Publication Date (Print):August 1, 1993Publication History Published online1 May 2002Publi…
Abstract The future aspects of Nitrogen based flame retardants in Nitrogen containing polymers are promising, as they contain no other chemical element than already present in the polymers. Sucessful applications are: * Melamine in Combustion Modified High Resilient Foam * Melamine in B‐1 rigid foam * Melamine Cyanura…
The title compound is monoclinic, P2 1 /c with a=7.813, b=7.061, c=13.775A, β=93.71°, and Z=4. Its structure has been refined to an unweighted residual of 0.041 using 1440 reflections. Moctezumite possesses a layer structure parallel to (001). In each layer, U-coordination pentagonal bipyramids form zigzag chains para…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTLiquid-crystalline polymers in good nematic solvents: free chains, mushrooms, and brushesD. R. M. Williams and A. HalperinCite this: Macromolecules 1993, 26, 16, 4208–4219Publication Date (Print):August 1, 1993Publication History Published online1 May 2002Published inissue 1…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTHole transport in 5'-[4-[bis(4-ethylphenyl)amino]phenyl]-N,N,N',N'-tetrakis(4-ethylphenyl)-1,1':3',1''-terphenyl-4,4''-diamineM. Van der Auweraer, F. C. De Schryver, P. M. Borsenberger, and J. J. FitzgeraldCite this: J. Phys. Chem. 1993, 97, 34, 8808–8811Publication Date (Pr…
Series of sequences of SEM micrographs are presented to elucidate species-specific shell features in larval and post-larval stages of four Ostreidae (Bivalvia) species ( Crassostrea gigas (Thunberg), C. virginica (Gmelin), Ostrea edulis L., and O. equestris Say). The diagnostic characters, including hinge structure, s…
The crystal structure of tetramethylammonium tribromocadmate (II), [N(CH 3 ) 4 ][CdBr 3 ] (TMCB), has been studied at 295 and 85 K, in order to analyze the structural changes connected with the improper para-ferroelectric phase transition occurring at ∼160 K. The space group of the paraelectric (room - temperature) ph…
The fluorescence pharmacokinetics of a series of metallosulfophthalocyanines, chelated with either aluminum or zinc and sulfonated to different degrees, was studied by fluorescence measurements in vivo. Dyes were administered systemically to female WAG/RIJ rats with an isogeneic mammary carcinoma transplanted into the…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTThermal decomposition of cellulose/synthetic polymer blends containing grafted products. 1. Cellulose/poly(methyl methacrylate) blendsNoboru Nishioka, Masayuki Yamaoka, Hiroki Haneda, Keizo Kawakami, and Masakuni UnoCite this: Macromolecules 1993, 26, 17, 4694–4699Publicatio…
Zirconia‐rich subsolidus phase relationships in the ZrO 2 –Sc 2 O 3 and ZrO 2 –In 2 O 3 systems were investigated. Phase inconsistencies in the ZrO 2 –Sc 2 O 3 system resulted from a diffusionless cubic‐to‐tetragonal ( t' ) phase transformation not being recognized in the past. Through three different measuring techni…
Rietveld analysis with the Monte Carlo method was used to estimate the crystal structure parameters of one of the polymorphs of titanylphthalocyanine (TiOPc). This polymorph is called TiOPc type C (C-TiOPc), and it is a low-photosensitive pigment used in electrophotograpy. In order to determine the relationship betwee…
The thermodynamical properties of an alternating spin (S,s) one-dimensional (1D) Ising model with competing nearest- and next-nearest-neighbor interactions are exactly calculated using a transfer-matrix technique. In contrast to the case S=s=1/2, previously investigated by Harada, the alternation of different spins (S…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTHigh-molecular-weight aromatic polyamides by direct polycondensationSaverio Russo, Alberto Mariani, Vladimir N. Ignatov, and Igor I. PonomarevCite this: Macromolecules 1993, 26, 18, 4984–4985Publication Date (Print):August 1, 1993Publication History Published online1 May 200…
The aluminium and nickel contents of Cu–Al–Ni alloy are varied to relate the parent phase chemistry to its shape memory behaviour. Rare earth and grain refining elements (titanium, zirconium, boron, etc.) are added in minor quantities to assess their effects on the grain refinement of the alloy and also on its shape r…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTThe effect of end groups on thermodynamics of immiscible polymer blends. 1. Interfacial tensionCathy A. Fleischer, Jeffrey T. Koberstein, V. Krukonis, and P. A. WetmoreCite this: Macromolecules 1993, 26, 16, 4172–4178Publication Date (Print):August 1, 1993Publication History…
Abstract Das Octatellurid [K(15‐Krone‐5) 2 ] 2 Te 8 entsteht durch Oxydation einer Kaliumtritelluridlösung in Dimethylformamid durch Eisen(III)‐chlorid in Gegenwart von 15‐Krone‐5 als schwarze Kristalle, die wir durch eine röntgenographische Strukturanalyse charakterisiert haben. Raumgruppe Pca2 1 , Z = 4, 4 548 beoba…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTNuclear magnetic resonance studies of blends containing poly(ethylene terephthalate) (PET) and poly(p-hydroxybenzoic acid-co-p-hydroxynaphthoic acid) (Vectra-A)Pei Tang, Jeffrey A. Reimer, and Morton M. DennCite this: Macromolecules 1993, 26, 16, 4269–4274Publication Date (P…
Abstract The purpose of this study was to investigate bonding mechanisms of representative inorganic anions and citrate with imogolite and allophane using electrophoresis. The electrophoretic mobility (EM) of synthetic imogolite and allophanes with Al/Si molar ratios of 2.02, 1.64, and 1.26 was determined in 0.001 and…
Viscometric data for seven compositions in the system NaAlSiOo-SiO, have been collected by the technique of concentric cylinder rheometry in the temperature and shear rate ranges 1000-1300'C and 10 2-8ls, respectively, for single-phase melts or supercooled liquids. As a function of increasing NaAlSiO.(N) content, the…