WELL-DEFINED SYNTHESIS OF POLY(DIMETHYLSILOXANE)

NINAGO M.D.; SATTI A.J.; RESSIA J.A.; CIOLINO A.E.; VALLES E.M.; VILLAR M.A.

Roma

Conferencia; The Ninth International Conference on Chemical and Process Engineering; 2009

The Italian Association of Chemical Engineering

In this work we present results on the controlled anionic ring-opening polymerization (AROP) of hexamethyl(cyclotrisiloxane) monomer (D3) using sec−butyl lithium as initiator (sec-Bu−Li+), and classical anionic polymerization techniques in whole vacuum-sealed glass reactors. We explored different temperatures and reaction times in order to understand the influence of secondary reactions in order to obtain model poly(dimethylsiloxane) homopolymers (PDMS) with molar masses ranging from 10,000-100,000 g/mol, and polydispersity indexes less than 1.1.