CONTROLLED SYNTHESIS OF α,ω-TELECHELIC PDMS

SOLEDAD M. M. LENCINA; VIVINA HANAZUMI; F. LEONARDO REDONDO; CAMILA MÜLLER; DANIEL A. VEGA; MARIO D. NINAGO; ANDRÉS E. CIOLINO; MARCELO A. VILLAR

Cancún-Rivera Maya

Conferencia; XV Simposio Latinoamericano de Polímeros-XIII Congreso Iberoamericano de Polímeros; 2016

XV Simposio Latinoamericano de Polímeros-XIII Congreso Iberoamericano de Polímeros

One of the goals of polymer chemistry is developing new synthetic pathways for the controlled synthesis of polymers with predictable, well-defined structures. Living anionic polymerization provides one of the best methodologies for synthesizing complex macromolecular structures such as block or graft copolymers, stars and functional macromolecules. Among them, the synthesis of telechelic polymers is of interest because these kind of macromolecules allow synthesizing model polymer networks, whose mechanical and rheological properties provides the key to design ?tailor-made? engineering materials. In this work we report the synthesis of vinyl terminated PDMS (B2V) by employing a novel bifunctional initiator. The synthesis involves high-vacuum anionic polymerization techniques and the sequential addition of specific reagents, starting from commercial diglycidylether terminated poly(dimethylsiloxane) (PDMS-DGE). The final reaction product was characterized by conventional analytical techniques, such as SEC, 1H-NMR and FTIR.