Zobrazeno 1 - 10
of 60
pro vyhledávání: '"W. J. MACKNIGHT"'
Publikováno v:
Journal of Polymer Science: Polymer Symposia. 46:83-96
A study of the crystallization behavior of poly(ethylene coacrylic acids) and poly-(ethylene comethacrylic acids) and their lithium, sodium, calcium, and cesium salts has been made utilizing the techniques of X-ray diffraction, differential scanning
Autor:
R. M. Neumann, W. J. Macknight
Publikováno v:
Journal of Polymer Science: Polymer Symposia. 63:281-288
Ethylene-methacrylic acid copolymers containing two different concentrations of the acid groups have been studied by dielectric relaxation and infrared techniques. The infrared measurements, used to determine the number of acid dimers present at a gi
Publikováno v:
Journal of Polymer Science: Polymer Symposia. 45:113-128
The nature of the distribution of ionic groups in cesium salts of ethylene-methacrylic acid and ethylene-acrylic acid copolymers containing 2.1 to 6.3 mol% acid was examined using the small-angle and wide-angle x-ray scattering techniques. The low-an
Autor:
W. J. Macknight, M. Yang
Publikováno v:
Journal of Polymer Science: Polymer Symposia. 42:817-832
Temperature dependent infrared studies have been carried out on three series of poly-urethanes previously synthesized and characterized. The repeat units of the three series may be schematically represented as follows: In each case n varies from 2 to
Publikováno v:
Journal of The Electrochemical Society. 142:L205-L207
The correlation between ionic association and matrix structures has been studied by using FT-Raman spectroscopy in three different network polymer electrolytes ; poly(ethylene oxide) (PEO), poly(propylene oxide) (PPO), and poly[2-(2-methoxyethoxyethy
Publikováno v:
Macromolecules. 29:1374-1374
Publikováno v:
Journal of Applied Physics. 48:4068-4071
Various compatibility criteria for polymer‐polymer blends are considered and their shortcomings discussed. An unambiguous thermodynamic criteria of compatibility, the enthalpy of mixing ΔHm, is obtained by application of Hess’s law to heat‐of
Autor:
F. E. Karasz, W. J. MacKnight
Publikováno v:
Pure and Applied Chemistry. 52:409-417
Properties of compatible multicomponent polymer systems can be studied quantitatively only if their fundamental thermodynamic parameters can be established. Thus measurements of mixing enthalpies in such polymer-polymer pairs is of interest in arrivi
Autor:
T. R. Earnest, W. J. MacKnight
Publikováno v:
Macromolecules. 10:206-210
Autor:
R. D. Lundberg, W. J. MacKnight
Publikováno v:
Rubber Chemistry and Technology. 57:652-663
Ionomers are a class of materials which are emerging as important commercial polymers but yet have many intriguing scientific characteristics. Typically, ionomers consist of a low level of inorganic salt groups pendent to a polymer chain. For this ar