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

ANDRÉS CIOLINO; NIKOS HADJICHRISTIDIS; ENRIQUE VALLÉS; VALERIA CASTELETTO; IAN HAMLEY; MARCELO VILLAR

Río de Janeiro (Brasil)

Congreso; 41st International Symposium on Macromolecules –World Polymer Congress; 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), atomic force microscopy (AFM), differential scanning calorimetry (DSC), and thermogravimetric analysis (TGA). These model triblock copolymers were synthesized combining sequential addition of monomers and silane-coupling chemistry, using high vacuum anionic polymerization techniques. According to the experimental results, the PB-b-PDMS-b-PB copolymers exhibit spherical and lamellar microphase arrangements, whereas their thermal stability depends on PDMS content.