Abstract
Kinetics of controlled simultaneous copolymerization of hexamethylcyclotrisiloxane (D3) with functional cyclotrisiloxanes was studied using n-BuLi in THF as initiator. Trifunctional (MeXSiO)3 (X3), where X = vinyl, trifluoropropyl or chloropropyl group, and monofunctional monomers [(Me2SiO)2MeXSiO] (D2X), where X = cyanopropyl or n-octyl group, were used as monomers. Reactivity ratios for each pair of comonomers were determined and the possibility of synthesis of gradient copolymers by this method is discussed.
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