Artículos de revistas
POLY(DIMETHYLSILYLENE-CO-DIPHENYLSILYLENE)
Registro en:
Journal Of Polymer Science Part A-polymer Chemistry. John Wiley & Sons Inc, v. 30, n. 11, n. 2333, n. 2340, 1992.
0887-624X
WOS:A1992JL82300006
10.1002/pola.1992.080301106
Autor
SARTORATTO, PPC
YOSHIDA, IVP
Institución
Resumen
In this work several polyorganosilylenes were synthesized including homo- and copolymers containing SiMe2 and SiPh2 units. A Wurtz-type coupling reaction of the respective dichlorodiorganosilanes with sodium metal, varying the Ph2SiCl2/Me2SiCl2 ratio was the chosen synthesis method. Products with different characteristics for solubility, structure (cyclic or linear), composition, and molecular weight distribution could be obtained depending on the comonomer ratios employed. The polysilane derivatives were characterized by infrared spectroscopy (IR), proton nuclear magnetic resonance (H-1-NMR), and gel permeation chromatography (GPC). Valuable information related to the comonomers' reactivities was obtained, such as molecular weight distribution, composition, and relationships between yields of soluble, insoluble, and cyclic materials of each polycondensation reaction. 30 11 2333 2340