Abstract
The Influence of Iodomethane on the Direct Synthesis of Poly(diphenylcarbosilane) The influence of the Ph2SiCl2/iodomethane molar ratio on the direct synthesis, structure and properties of the obtained oligomeric poly(diphenylcarbosilanes) C-PPC/Me was investigated at molar ratios Ph2SiCl2:CH3I = 0,5; 1; 2; 4; 9. Increasing the CH3I-concentration leads to an increase of the average molecular weights of the synthesized products and more side reactions. The formation of volatile hydrocarbons decreases the amount of CH3I and CH2Br2 during the reaction and leads to the production of oligomeres with high polysilane character. The polycarbosilanes obtained were investigated by elemental analysis and characterized spectoscopically. Furthermore the weight and number averages Mw and Mn were determined by gel-permeation chromatography. They reflected the oligomeric character of this products.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
