Preparation of single-site tin(IV) compounds and their use in the polymerization of ε-caprolactone |
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Authors: | Begum Canan Yildiz |
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Affiliation: | Department of Chemistry, Kocaeli University, Kocaeli, Turkey |
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Abstract: | Butyltin(IV) carboxylate compounds were obtained by reactions of butyltrichlorotin(IV) with potassium pivalate, perfluoroheptanoate, methacrylate, 2,6-pyridinedicarboxylate, and phthalate. The synthesized complexes were fully characterized by nuclear magnetic resonance (1H-, 13C-NMR), Fourier transform infrared (FTIR), mass spectroscopies (MS) and elemental analysis. These tin complexes were used as catalysts for the ring opening polymerization of ε-caplolactone and the conversion of monomers to polymers was completed in just 1 h. The structures of polymers were characterized by a combination of spectroscopic techniques (NMR, FTIR, MS), differential scanning calorimeter (DSC) and gel permeation chromatography. In this study, the ε-caplolactone polymers with different average molecular weights between 5000 and 40,000 Da having a regular structure were obtained. |
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Keywords: | Single-site tin catalyst carboxylates ε-caplolactone ring-opening NMR |
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