Zobrazeno 1 - 10
of 42
pro vyhledávání: '"Wolfgang Pechhold"'
Publikováno v:
Rheologica Acta. 50:221-229
Using a piezo rotary and axial vibrator (PRAV) the viscoelastic properties of a fresh Al2O3 coating that is deposited on a well-chosen plate can be measured simultaneously during drying. There are three types of vibrations available to be excited and
Autor:
Wolfgang Pechhold, Carsten H. Meyer, Fritz Soergel, Henk A. Weeber, Rob G.L. van der Heijde, Gabi Eckert
Publikováno v:
Experimental Eye Research. 80:425-434
The purpose of this study was to determine the shear compliance of human crystalline lenses as a function of age and frequency. Dynamic mechanical analysis was performed on 39 human lenses, ranging in age from 18 to 90 years, within the frequency ran
Publikováno v:
Journal of Rheology. 47:303-319
A set of torsional resonators is used to characterize the linear viscoelastic behavior of complex fluids in the kilohertz range. The frequency dependence of the elastic and loss modulus of a hard sphere dispersion, electrostatically and electrosteric
Autor:
Ludwig Kirschenmann, Wolfgang Pechhold
Publikováno v:
Rheologica Acta. 41:362-368
Conventional, motor controlled rheometers, allow, e.g., stress-controlled measurements of the shear viscosity up to several thousands in shear rate, but reliable oscillating viscoelastic measurements only up to f=50 Hz (ω=300 s–1). This limitation
Publikováno v:
Macromolecular Chemistry and Physics. 202:1883-1888
The molecular dynamics of two styrene-butadiene-styrene block copolymers with different morphologies and stiffness but with the same phase dimensions (thickness of domains) were investigated. Dynamic mechanical and dielectric measurements were done o
Publikováno v:
Polymer International. 48:855-860
A series of ethylene propylene diene rubber/polyethylene (EPDM/PE) blends has been prepared containing different weight fractions of PE up to 0.66. The blends were vulcanized with a sulphur system N-cyclohexyl-2-benzthiazol sulphenamide/sulphur (CBS/
Publikováno v:
Colloid & Polymer Science. 276:1078-1087
The series of hexacyclo-linear polyorganosiloxanes containing methyl and phenyl side groups, which differ by molecular weight and tacticity, were analyzed for the dependence of surface pressure on surface area per monomer unit. The effects of tempera
Publikováno v:
ResearcherID
Soluble propene/ethene/CO terpolymers (EPEC) with ultrahigh molecular weight (up to 1.2 × 106 g/mol) were prepared by the use of dicationic palladium(II) phosphine catalysts and an optimized amount of water as activator. When the molar ratio of ethe
Publikováno v:
Colloid & Polymer Science. 270:639-651
The purpose of this study is to examine the application of the meander model to the understanding of transition properties in the isotropic-nematic (paper I), and in the isotropic-smectic or — lamellar (paper II) phase transitions in polymers. This
Publikováno v:
Colloid & Polymer Science. 270:325-330
Two polystyrenes terminated withp-cyanobenzyl andp-cyanobiphenyl groups (=labels) were prepared and their complex dielectric constants were measured in the glass transition region in the frequency range 10−2–106 Hz. The glass temperaturesTg (DSC)