<p>The need for titanium compounds for homogeneous catalysis is gradually increasing due to their non-toxic properties and catalytic activity. In this study, a new titanium (IV) salicylate complex was obtained capable of catalyzing the polymerization of ε-caprolactone and D,L–lactide with benzyl alcohol as co-initiator. The catalyst was investigated by different methods like MALDI, NMR-spectroscopy and XRD. This new titanium complex has proven to be an effective catalyst for ROP reactions at 120&#xa0;°C. This catalyst has shown significant efficiency due to the high molecular weight of the resulting polymer (M<sub>w</sub> ~ 80,000) and a narrow dispersity (M<sub>w</sub>/M<sub>n</sub> &lt; 1.3).</p>

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Ring-opening polymerization of ε-caprolactone and D,L-lactide catalyzed by a low toxic and eco-friendly titanium salicylate catalyst

  • I. R. Lednev,
  • I. D. Grishin,
  • E. V. Salomatina,
  • S. D. Zaitsev,
  • L. A. Smirnova

摘要

The need for titanium compounds for homogeneous catalysis is gradually increasing due to their non-toxic properties and catalytic activity. In this study, a new titanium (IV) salicylate complex was obtained capable of catalyzing the polymerization of ε-caprolactone and D,L–lactide with benzyl alcohol as co-initiator. The catalyst was investigated by different methods like MALDI, NMR-spectroscopy and XRD. This new titanium complex has proven to be an effective catalyst for ROP reactions at 120 °C. This catalyst has shown significant efficiency due to the high molecular weight of the resulting polymer (Mw ~ 80,000) and a narrow dispersity (Mw/Mn < 1.3).