Zobrazeno 1 - 8
of 8
pro vyhledávání: '"Sizhong Dong"'
Autor:
Marvin D. Rausch, Dellyo Alvares, Sizhong Dong, Ricardo Fierro, Zhengtian Yu, James C. W. Chien
Publikováno v:
Journal of Polymer Science Part A: Polymer Chemistry. 32:661-673
Syndioselective propylene polymerization has been promoted by rac-2,2-dimethylpropylidene (1-η5-cyclopentadienyl) (1-η5-fluorenyl) dichlorozirconium (1). The active catalytic species were generated using either triphenylcarbenium tetrakis (pentaflu
Autor:
James C. W. Chien, Sizhong Dong
Publikováno v:
Polymer Bulletin. 29:515-519
Styrene polymerization was initiated by methylaluminoxane in the presence of haloalkane. The propagating species are shown by trapping experiments and electron paramagnetic resonance to be both radicals and cations.
Publikováno v:
Macromolecules. 25:3199-3203
The active oxidation state of Ti in the cyclopentadienyltributoxyltitanium methylaluminoxane (CpTi(OBu) 3 /MAO) catalyst has been determined by electron paramagnetic resonance (EPR) and redox titration. The results, together with previously reported
Autor:
H. Henning Winter, Geraldo Hidalgo Llinas, Daniel T. Mallin, Sizhong Dong, Yao Lin, Marvin D. Rausch, James C. W. Chien
Publikováno v:
Macromolecules. 25:1242-1253
Propylene was polymerized with rac-[anti-ethylidene(1-η 5 -tetramethylcyclopentadienyl)-(1-η 5 -indenyl)dichlorotitanium activated with methylaluminoxane. The polypropylene (PP) with T m of 67-71°C, soluble in a single solvent and monodisperse was
Autor:
Venkatesh Telluri, Jairo René Martínez, Sizhong Dong, Karl Jakus, Yingsong Yang, James C. W. Chien
Publikováno v:
Journal of Polymer Science Part A: Polymer Chemistry. 29:495-503
La chaine de l'oligo(methylaluminoxane) est allongee par reaction avec l'eau puis les groupes methyl n'ayant pas reagi sont transformes en groupes propanoyloxy et i-propanoyl en proportions relatives convenables pour obtenir une bonne fiabilite du ma
Autor:
W.M. Tiernan, James C. W. Chien, Yingsong Yang, B. M. Gong, Sizhong Dong, J. M. Madsen, Robert B. Hallock
Publikováno v:
Physica C: Superconductivity. 168:189-194
We report studies of the properties of an Ag-YBa2Cu3O7−x (Ag-123) fiber typical of those we have produced by a variation of the polymer-metal-complex (PMC) precursor technique of Chien et al. Detailed results for the temperature, current and magnet
Publikováno v:
Physica B: Condensed Matter. :1383-1384
We report on the fabrication and superconducting transport properties of superconducting fibers with typical cross-sectional areas of 10 2 to 10 3 μm 2 made using the polymer-metal precursor (PMC) technique. These samples show superconducting proper
Publikováno v:
Journal of the American Chemical Society. 112:2030-2031