INFLUENCE OF AMORPHOUS BLOCK ON THE CRYSTALLIZATION OF POLY(ε-CAPROLACTONE) IN MODEL BLOCK COPOLYMERS

MARIO D. NINAGO; ANGEL J. SATTI; ANDRéS E. CIOLINO; MARCELO A. VILLAR

Gramado

Simposio; XII International Macromolecular Colloquium; 2010

Associacao Brasileira de Polimeros

The kinetic crystallization behavior of model block copolymers based on å-caprolactone, obtained by anionic polymerization (high vacuum techniques), was study by isothermal crystallization experiments. Employing model poly(styrene-b-å-caprolactone) (PS-b-PCL) and poly(dimethylsiloxane-b-å-caprolactone) (PDMS-b-PCL) with different composition we analyzed the influence of the amorphous block on the processes of nucleation and growth of poly(å-caprolactone) crystallization. Isothermal crystallization experiments allow us to obtain kinetics parameters of interest such as the half-life (t1/2), the bulk crystallization constant (k), and the Avrami exponent (n).