Materials Literature
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Abstract Electrophoretic mobility of imogolite has been reported as positive (migration toward the negative electrode) below pH 9, and zero above pH 9. However, when mobility of dilute imogolite suspensions (5 × 10 −3 kg/m 3 ) was measured, it was found to be negative above pH 9. The reason that imogolite does not beh…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTA lattice treatment of crystalline solvent-amorphous polymer mixtures on melting point depressionYoshio Hoei, Kazuo Yamaura, and Shuji MatsuzawaCite this: J. Phys. Chem. 1992, 96, 26, 10584–10586Publication Date (Print):December 1, 1992Publication History Published online1 M…
Hole mobilities of 1,1,-bis(di-4-tolylaminophenyl)cyclohexane (TAPC) doped bisphenol-A- polycarbonate have been measured over a range of concentrations. The mobilities are strongly concentration dependent, increasing with increasing TAPC concentration. The results are described within the framework of the disorder for…
Abstract Two high density polyethylene resins—801 and 802— are examined with regard to their isothermal, time‐dependent, and nonisothermal swelling properties when emerging from two annular and three diverging dies. The short time swelling characteristics of samples 801 and 802 are very important for these dies, resul…
Sugar cane fiber bundles were extracted from the separated rind of cane stalks using alkaline treatments. The amount of lignin removed depended on alkaline concentration and time and pressure of treatment; agitation and vigorous boiling also affected the lignin removal. A severity factor R was calculated to compare th…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTLarge deformation of polycarbonate near the glass transition temperatureTadashi Inoue, Hirotaka Okamoto, and Kunihiro OsakiCite this: Macromolecules 1992, 25, 25, 7069–7070Publication Date (Print):December 1, 1992Publication History Published online1 May 2002Published inissu…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTStatic structure of strongly interacting colloidal particlesI. K. Snook and J. B. HayterCite this: Langmuir 1992, 8, 12, 2880–2884Publication Date (Print):December 1, 1992Publication History Published online1 May 2002Published inissue 1 December 1992https://pubs.acs.org/doi/…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTCatalytic antibodies. Circular dichroism and UV-vis studies of antibody-metalloporphyrin interactionsE. Keinan, E. Benory, S. C. Sinha, A. Sinha-Bagchi, D. Eren, Z. Eshhar, and B. S. GreenCite this: Inorg. Chem. 1992, 31, 26, 5433–5438Publication Date (Print):December 1, 199…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSolvent and substituent effects on the redox properties of free-base tetraphenylporphyrins in DMSO and aqueous DMSORobert A. Ransdell and Carl C. WamserCite this: J. Phys. Chem. 1992, 96, 25, 10572–10575Publication Date (Print):December 1, 1992Publication History Published o…
The 70% EtOH extract of Scoparia dulcis showed inhibitory activity against beta-glucuronidase from bovine liver. Bioassay-directed fractionation of the active extract led to the isolation of three labdane-type diterpene acids, scoparic acid A [1] [6-benzoyl-12-hydroxy-labda-8(17), 13-dien-18-oic acid], scoparic acid B…
The martensitic transformation in sodium metal has been studied using neutron-diffraction and neutron-inelastic-scattering techniques. In two separate experiments the transformation was observed on cooling near 32 K. Measurements of the diffuse scattering, diffraction linewidths, quasielastic scattering, and the tempe…
SUMMARY In this first of three papers, the parent materials, morphology and field relationships of soils with fragipans, similar to those in north‐eastern United States, are described and analyses of their chemical and physical properties are presented to support a periglacial stage of development. The soil materials…
Photoelectrochemical studies were performed using passivated titanium electrodes. The passive films were formed by anodization of Ti in galvanostatically with current densities between 2 and 100 mA/cm 2 , with a constant passed charge of 4 A · s/cm 2 . Photocurrent spectra in , short‐circuit photocorrosion in and chan…
Abstract The oxidation state of structural iron greatly influences the physical-chemical properties of clay minerals, a phenomenon that may have significant implications for pollutant fate in the environment, for agricultural productivity, and for industrial uses of clays. Knowledge of redox mechanisms is fundamental…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTStability of thin films in concentrated emulsionsJ. BibetteCite this: Langmuir 1992, 8, 12, 3178–3182Publication Date (Print):December 1, 1992Publication History Published online1 May 2002Published inissue 1 December 1992https://pubs.acs.org/doi/10.1021/la00048a053https://do…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTEvaluation of log-normal distribution first-order kinetic model for copper(II)-humic acid complex dissociationAndrew W. Rate, Ronald G. McLaren, and Roger S. SwiftCite this: Environ. Sci. Technol. 1992, 26, 12, 2477–2483Publication Date (Print):December 1, 1992Publication Hi…
The essential features of the active plastic zone at the tip of a penetrating rigid cone are investigated for a rigid/perfectly plastic solid. An exact solution is suggested for the plastic zone. A rigid zone exists ahead of the cone and is separated from the plastic zone by a conical surface of discontinuity. It is a…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTFive redox stages of tetraoxaporphyrin: a UV/visible/near-IR, ESR, and MO theoretical studyRainer Bachmann, Fabian Gerson, Georg Gescheidt, and Emanuel VogelCite this: J. Am. Chem. Soc. 1992, 114, 27, 10855–10860Publication Date (Print):December 1, 1992Publication History Pu…
The fracture of a transparent, large‐grain‐sized MgAl 2 O 4 spinel has been studied through temperatures of 1400°C. Fracture toughness values, falling between about 1.3 and 2.3 MPa.m 12;1/2 , behaved sigmoidally with temperature, with a lower shelf transition appearing near 800°C. Rising R ‐curves, displaying a run‐ar…
Porcine ribonuclease inhibitor (RI) contains 30 1/2-cystinyl residues, all of which occur in the reduced form. Reaction of the native protein with 5,5'-dithiobis (2-nitrobenzoic acid) resulted in the release of 30 mol of the product 5-mercapto-2-nitrobenzoate, and the loss of the RNase inhibitory activity. A linear re…