Thermal and morphological characterization of model triblock copolymers of poly(butadiene) 1,4 with poly(dimethylsiloxane)

ANDRÉS E. CIOLINO; NIKOS HADJICHRISTIDIS; ENRIQUE M. VALLÉS; VALERIA CASTELLETTO; IAN W. HAMLEY; MARCELO A. VILLAR

Rio de Janeiro, Brasil

Simposio; World Polymer Congress, 41st International Symposium on Macromolecules, MACRO 2006; 2006

IUPAC

The thermal and morphological properties of model triblock copolymers of butadiene 1,4 with poly(dimethylsiloxane) (PB-b-PDMS-b-PB) were analyzed by small angle X rays scattering (SAXS), differential scanning calorimetry (DSC), and thermogravimetric analysis (TGA). These model triblock copolymers were synthesized using high vacuum anionic polymerization techniques combining sequential addition of monomers and silane-coupling chemistry. According to the experimental results, the PB-b-PDMS-b-PB copolymers exhibit spherical and lamellar morphology, whereas their thermal stability depends on the PDMS content.