Influence of the elastomeric polypropylene addition on the properties of commercial metallocenic polypropylene

AUTOR(ES)

Marques, Maria de Fátima V., Poloponsky, Mariana, Chaves, Érica Gervasoni

FONTE

Materials Research

DATA DE PUBLICAÇÃO

2001-10

RESUMO

Polypropylene with special properties can be obtained by metallocenic catalysts. These catalytic systems represent the beginning of a new age in polyolefins technology. In this work, the influence of the addition of a syndiotactic polypropylene (s-PP) on the processability and mechanical properties of a commercial isotactic polypropylene (i-PP) obtained by metallocenic catalysts was evaluated. Increasing addition of s-PP promoted better processability, with an increase in the impact strength and a decrease in the stress at break. A reduction of the crystallinity in the polymeric blends was verified. The more significant influence of the s-PP addition was observed for the mi-PP, compared to the ZNi-PP.

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