Volume 11, Issue 4, October 1982
Index of content:
11(1982); http://dx.doi.org/10.1063/1.555670View Description Hide Description
Data on the polymorphic phase transformations of known compounds and new synthetic compounds of the type AB2 have been compiled and evaluated. All available pressure studies have been included and referenced. Pressure‐temperature phase diagrams showing first order solid‐solid phase boundaries and/or melting curves showing the best fit to the experimental data are included. For some materials which can be produced only by chemical synthesis techniques at high pressures and high temperatures, reaction‐product diagrams have been employed to estimate the region of thermodynamic stability. Crystallographic data of all the known phases of each material have been tabulated and evaluated. This review covers 168 compounds and 332 phases including the room temperatureatmospheric pressure phase for each compound when it exists.
11(1982); http://dx.doi.org/10.1063/1.555671View Description Hide Description
Heat capacity of poly(methyl methacrylate), polyacrylonitrile, poly(methyl acrylate), poly(ethyl acrylate), poly(n‐butyl acrylate), poly(iso‐butyl acrylate), poly(octadecyl acrylate), poly(methacrylic acid), poly(ethyl methacrylate), poly(n‐butyl methacrylate), poly(iso‐butyl methacrylate), poly(hexyl methacrylate), poly(dodecyl methacrylate), poly(octadecyl methacrylate) and polymethacrylamide is reviewed on the basis of measurements on 35 samples reported in the literature. A set of recommended data are derived for each acrylic polymer in the amorphous state.Enthalpy and entropy functions are calculated for poly(methyl methacrylate) and polyacrylonitrile. This is the sixth paper in a series of publications which will ultimately cover all heat capacity measurements on linear macromolecules.
11(1982); http://dx.doi.org/10.1063/1.555672View Description Hide Description
Tabulations are presented of molecular form factorsF(x), for values of x=sin(θ/2)/λ from 0 to 1.25 Å− 1, for liquid water at eight temperatures between 4 °C and 200 °C and for the free water molecule. For liquid water, x=0 to 1.25 Å− 1, the tabulated values are interpolated from experimental values of Narten and Levy (1971). For the free water molecule, x=0 to 1.25 Å− 1, the tabulated values are interpolated from calculated values of Blum (1971). For x=1.25 to 109 Å− 1, the independent atomic scattering hypothesis is assumed and the water molecular form factorF(x) is calculated from the hydrogen and oxygen atomic form factors given by Hubbell and Overbo (1979). Tables of coherent scattering cross sections, obtained by numerical integration of the Thomson formula, weighted by F 2(x), are presented for liquid water at eight temperatures between 4 °C and 200 °C and for the free water molecule, for photon energies 5 keV to 1 MeV.
11(1982); http://dx.doi.org/10.1063/1.555673View Description Hide Description
11(1982); http://dx.doi.org/10.1063/1.555674View Description Hide Description
11(1982); http://dx.doi.org/10.1063/1.555669View Description Hide Description