ZUSAMMENFASSUNG:Bei der kationischen Polymerisation von L-Lactid entsteht ein hochkristallines, isotaktisches Polymeres. Physikalische Eigenschaften des Monomeren und Polymeren werden SUMMARY:In the cationic polymerization of L-lactide a high cristalline isotactic polymer is obtained. Physical properties of monomer and polymer are reported. The one-term DRUDE equation is valid for the optical rotatory dispersion of L-lactide in different solvents. The polymer shows a dispersion curve with a first extremum at 275 mp. The rotatory dispersion of the poly-L-lactide can be described by the MOFFITT-YANG equation. This permits conclusions on the secondary structure of the dissolved polymer.

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