Influence of Amorphous Block on the Crystallization of Poly(epsilon-caprolactone) in Model Block Copolymers

M.D. NINAGO; A.J. SATTI; A.E. CIOLINO; M.A. VILLAR

Gramado, RS

Simposio; XII International Macromolecular Colloquium y 7th Internacional Symposium on Natural Polymers and Composites; 2010

Universidade Federal do Rio Grande do Sul

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).