A series of diaminecarbosilazane-containing polymers of the general formula [-SiPh2-NH-R-NH-]n, (R is 1,2-ethane, 1,3-propane, 1,4-butane, 1,6-hexamethylene and 1,4-phenylene) has been prepared by polycondensation of dichlorodiphenylsilane with the corresponding aliphatic and aromatic diamines in the presence of a weak base. These carbosilazane polymers were characterized by elemental analysis, thermogravimetric analysis (TGA), infrared (FT-IR), 1H NMR and electronic(UV-vis) spectroscopy. The average molecular weight and n value of these polymers were found to range from 6000 to 9500 and 20 to 37, respectively.
No takes yet. Share an insight, caveat, or question.
Arafa et al. (2002) studied this question.
Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context: