Now showing items 21-30 of 37
Grafting of polymers onto a carbon black surface by the trapping of polymer radicals
(John Wiley & Sons, Ltd., 1998-10)
The grafting of polymers onto a carbon black surface based on the trapping of polymer radicals by polycondensed aromatic rings of the surface was investigated. It was found that polymer radicals formed by the thermal ...
Polyfunctional cubic silsesquioxanes as building blocks for organic/inorganic hybrids
(John Wiley & Sons, Ltd., 1998-10)
Cubic silsesquioxanes, [RSiO 1.5 ] x , potentially offer access to organic/inorganic hybrids wherein the exact shape, size and mechanical properties of the inorganic component are perfectly defined. Furthermore, by ...
Polymer-layered silicate nanocomposites: Synthesis, properties and applications
(John Wiley & Sons, Ltd., 1998-10)
Polymer nanocomposites, especially polymer-layered silicate (PLS) nanocomposites, represent a radical alternative to conventionally (macroscopically) filled polymers. Because of their nanometer-size dispersion, the ...
The influence of environment on the induction of sensitization to the psychomotor activating effects of intravenous cocaine in rats is dose-dependent
(Springer-Verlag; Springer-Verlag Berlin Heidelberg, 1998-04)
The acute psychomotor response and development of sensitization to amphetamine is attenuated if IP injections are given in the cage where a rat lives relative to when injections are given in a novel but physically identical ...
Chemical vapor deposition of tungsten oxide
(John Wiley & Sons, Ltd., 1998-03)
Crystalline and amorphous thin films of tungsten(VI) oxide can be prepared by chemical vapor deposition using a variety of volatile precursors below 500 °C. Deposition parameters for preparation of WO 3 films from tungsten ...
Synthesis of poly(vinyl alcohol) / silica gel polymer hybrids by in-situ hydrolysis method
(John Wiley & Sons, Ltd., 1998-10)
Homogeneous poly(vinyl alcohol) (PVA)–silica gel polymer hybrids were prepared by in-situ hydrolysis of poly(vinyl acetate) (PVAc) in a sol–gel reaction mixture with tetramethoxysilane (TMOS). The degree of hydrolysis was ...
Rearrangements versus ligand exchange reactions of organocobalt polymer having cobaltacyclopentadiene moieties in the main chain Part of the work presented here was communicated in Ref. 1: Macromolecules , 27 , 7009 (1994).
(John Wiley & Sons, Ltd., 1998-10)
The rearrangement reaction of an organocobalt polymer with cobaltacyclopentadiene moieties in the main chain ( 1 ) was carried out to yield anew polymer bearing (η 5 -cyclopentadienyl) (η 4 -cyclobutadiene)cobalt moieties ...
Surface science and stability of networks prepared from hydroxy-terminated polydimethylsiloxane and methyltriethoxysilane
(John Wiley & Sons, Ltd., 1998-10)
Polydimethylsiloxane (PDMS) hybrid networks have been prepared by the reaction of PDMS(OH) 2 , average molecular weight 26 14× 1410 3 , 43.6 14× 1410 3 and 58 14× 1410 3 , and methyltriethoxysilane (MeTEOS, 10–60 wt%) ...
Polarized Raman spectra of oriented films of Α-helical poly( L -alanine) and its N -deuterated analogue
(John Wiley & Sons, Ltd., 1998-01)
Polarized Raman spectra were obtained on well oriented films of Α-helical poly( L -alanine) (Α-PLA) and its N -deuterated analogue in order to obtain definitive assignments of the E 2 -species modes. Such assignments ...
Microstructure of a Pd/ceria–zirconia catalyst after high-temperature aging
(Kluwer Academic Publishers-Plenum Publishers; Kluwer Academic Publishers ; Springer Science+Business Media, 1998-03)
A model automotive exhaust catalyst, consisting of 2.25 wt% Pd supported on initially high-surface-area (88 m 2 /g) cerium–zirconium mixed oxide (Ce 0.5 Zr 0.5 O 2 ), was studied by X-ray diffraction (XRD), thermogravimetric ...