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J Am Chem Soc. 2002 Feb 27;124(8):1566-7.

Influence of regio- and stereoregularity of propene insertion on crystallization behavior and elasticity of ethene-propene copolymers.

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1
Dipartimento di Chimica, Università di Salerno, I-84081 Baronissi (SA), Italy.

Abstract

Melting enthalpies of several ethene-propene samples, obtained by different single-center catalytic systems and having widely different constitutions and compositions in the range of industrial interest, are compared. For the first time, a clear evidence of influence of the regio- and stereoregularity of propene insertion on crystallization behavior of ethene/propene copolymers is provided. This influence is in qualitative agreement with the results of simplified energy calculations relative to models of pseudo-hexagonal packing of ethene-propene copolymers.

PMID:
11853417
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