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Abstract The work reported here concerns the peroxide crosslinking of ethylene–vinyl acetate rubber. Calculated values for scission‐to‐crosslinking ratios are higher for EVA than for low‐density polyethylene. In the temperature range from 150 to 200°C at a constant peroxide content, a rise in temperature results in a…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSynthesis, characterization, and electrochemistry of a new platinum "tetrathiolene" cluster, tetrakis(triphenylphosphine)tetrathionaphthalenediplatinum(II,II): a novel system with five reversible oxidation statesBoon-Keng Teo, F. Wudl, J. H. Marshall, and A. KrugerCite this:…
Abstract A method based on the PFT‐NMR technique was developed for a direct determination of unsaturated end groups in PVC. By using NMR proton spectra it was found that the unsaturated groups in PVC contain allylic chlorine atoms. Three types of unsaturated end groups were identified, corresponding to the following m…
The amount and type of borohydride-reducible crosslinks in collagen have been examined as a function of animal age. In a variety of bovine, canine and human tissues the level of redicible crosslinks decreases with time and the ratios of individual compounds change. There is both tissue and species specificity in the e…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTMolecular and Crystal Structures of Poly(ethylene oxybenzoate): α FormHiroshi Kusanagi, Hiroyuki Tadokoro, Yozo Chatani, and Kazuaki SuehiroCite this: Macromolecules 1977, 10, 2, 405–413Publication Date (Print):March 1, 1977Publication History Published online1 May 2002Publi…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTNylon-1313 from Brassylic AcidH. J. Nieschlag, J. A. Rothfus, V. E. Sohns, and R. Beltron Perkins Jr.Cite this: Ind. Eng. Chem. Prod. Res. Dev. 1977, 16, 1, 101–107Publication Date (Print):March 1, 1977Publication History Published online1 May 2002Published inissue 1 March 1…
The D-alanine carboxypeptidase of B. subtilis is a membrane-bound enzyme which is inhibited by penicillins and binds them covalently. The enzyme has been labeled with [14C]- or [35S]penicillin. After tryptic or Pronase digestion of the labeled, denatured, reduced, and carboxymethylated enzyme, a radioactive peptide wa…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTKinetics and Thermodynamics of Interconversion of Macroesters and Macroion Pairs in the Cationic Polymerization of TetrahydrofuranAnna M. Buyle, Krzysztof Matyjaszewski, and St. PenczekCite this: Macromolecules 1977, 10, 2, 269–274Publication Date (Print):March 1, 1977Public…
Abstract Thermally stimulated discharge has been used in the past to diagnose and estimate the magnitude of electrical polarization in polymers. Nevertheless, molecular characterization of operative phenomena by this technique alone is often a difficult task. In the present work, infrared attenuated total reflection s…
A method is presented for the exact nonlinear analysis of reinforced and prestressed concrete slender members subject to biaxial bending. The main feature of the method is the procedure that analyzes the stress-strain state of sections, under given axial force and biaxial moment. The outlined procedure, applied to a n…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTWarming-induced reactions in .gamma.-irradiated naphthalene solutions in Freon-mixture glassAkira Kira, Takashi Nakamura, and Masashi ImamuraCite this: J. Phys. Chem. 1977, 81, 6, 511–516Publication Date (Print):March 1, 1977Publication History Published online1 May 2002Publ…
The adsorption of n‐decylamine on zinc from acidic chloride solution has been studied using the corrosion technique. The corrosion rates of zinc in acidic chloride solution containing n‐decylamine are measured as a function of n‐decylamine concentration. The degree of surface coverage as calculated from the corrosion…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTKinetic isotope effect on proton tautomerism in tetraarylporphyrinsS. S. Eaton and G. R. EatonCite this: J. Am. Chem. Soc. 1977, 99, 5, 1601–1604Publication Date (Print):March 1, 1977Publication History Published online1 May 2002Published inissue 1 March 1977https://pubs.acs…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTAn electron spin-lattice relaxation mechanism involving tunneling modes for trapped radicals in glassy matrixes. Theoretical development and application to trapped electrons in .gamma.-irradiated ethanol glassesMichael K. Bowman and Larry KevanCite this: J. Phys. Chem. 1977,…
Abstract The crystal structure of malachite is refined ( R = 0.021) with the intensity values of 635 independent neutron reflexions from a single crystal, rather free from absorption and extinction. Concerning the structural geometry, no essential deviations occur from the known results of x-ray diffraction. The therm…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTMetal-metal bond cleavage reactions. The crystallization and solid state structural characterization of cadmium tetracarbonyliron, CdFe(CO)4Richard D. Ernst, Tobin J. Marks, and James A. IbersCite this: J. Am. Chem. Soc. 1977, 99, 7, 2090–2098Publication Date (Print):March 1…
Abstract In spite of the importance of fatigue behavior in engineering plastics, relatively few fundamental studies have been made of the effects of polymer structure, molecular weight, composition, and morphology on fatigue crack propagation (FCP). As, part of a broad program for the study of such effects, the role o…
Samples in the composition range Fe0.95O-Fe0.88O quenched from about 1000°C, have been studied by electron diffraction/microscopy with special emphasis on the dark-field technique. The set of morphologies obtained by quenching and annealing confirms a spinodal-like decomposition in an oxygen-rich and an almost stoichi…
A unified Landau theory is introduced for the nematic, smectic $A$, and smectic $C$ phases using the director $\stackrel{\ensuremath{\rightarrow}}{\mathrm{n}}$ for the nematic order parameter, the complex order parameter $\ensuremath{\psi}$ for the smectic planes, and the vector $\stackrel{\ensuremath{\rightarrow}}{\e…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXT(Acetylacetonato)[(-)-N-alkylephedrinato]dioxomolybdenum, a new class of chiral chelate complexes which catalyze asymmetric epoxidation of allylic alcoholShunichi Yamada, Toshio Mashiko, and Shiro TerashimaCite this: J. Am. Chem. Soc. 1977, 99, 6, 1988–1990Publication Date (…