Materials Literature
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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…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTAnalysis of polymer surfaces by SIMS. 16. Investigation of surface crosslinking in polymer gels of 2-hydroxyethyl methacrylateAshutosh Chilkoti, Gabriel P. Lopez, Buddy D. Ratner, Martin J. Hearn, and David BriggsCite this: Macromolecules 1993, 26, 18, 4825–4832Publication D…
Dolichyl-phosphate-mannose synthase is a membrane-bound enzyme of the endoplasmic reticulum that catalyzes the formation of dolichyl phosphate mannose from dolichyl phosphate and GDP-mannose. It is an essential enzyme for growth of Saccharomyces cerevisiae, and, like other enzymes that utilize some form of the lipid d…
Abstract The maximum crystal radius R n of ice in hollow wet chrysotile tubes is established by thermoporometry to be between 2.8 and 3.2 nm, and the internal pore volume V n of the tubes to be between 0.008 and 0.02 ml/g. The hollow tubes of chrysotile and, for comparative reasons, small plates of talc, are hydrother…
A combined elevated pressure reactor/ultrahigh vacuum (UHV) surface analytical system has been designed for studies of heterogeneous catalytic reactions. The reaction cell is separated from the surface analysis chamber by a differentially pumped sliding seal. This feature allows simple in situ sample transfer capabili…