Controlled Synthesis of alpha, omega-Telechelic PDMS

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

Cancún, Riviera Maya

Congreso; XV Simposio Latinoamericano de Polímeros and XIII Congreso Iberoamericano de Polímeros: SLAP 2016; 2016

One of the goals of polymer chemistry is developing new syntheticpathways for the controlled synthesis of polymers with predictable,well-defined structures. Living anionic polymerization provides oneof the best methodologies for synthesizing complexmacromolecular structures such as block or graft copolymers,stars and functional macromolecules1. Among them, the synthesisof telechelic polymers is of interest because these kind ofmacromolecules allow synthesizing model polymer networks,whose mechanical and rheological properties provides the key todesign ?tailor-made? engineering materials. In this work we reportthe synthesis of ,vinyl terminated PDMS (B2V) by employinga novel bifunctional initiator. The synthesis involves high-vacuumanionic polymerization techniques and the sequential addition ofspecific reagents, starting from commercial diglycidyletherterminated poly(dimethylsiloxane) (PDMS-DGE). The finalreaction product was characterized by conventional analyticaltechniques, such as SEC, 1H-NMR and FTIR.