Abstract
Cu(II)-catalyzed synthesis of low-molecular weight linear and hyperbranched polyesters at ambient temperature. Biodegradable polyesters are biohybrid materials, which have been widely used in various fields such as tissue engineering and regenerative medicines. Particularly, the low-molecular weight biodegradable polymers have received attention in medical applications as materials for molecular engineering. Controlled/living ring opening polymerization (ROP) of cyclic esters is the most efficient method for the synthesis of polyesters of desired molecular weight. Herein, we describe copper perchlorate hexahydrate (Cu(ClO4)2·6H2O)-catalyzed synthesis of poly(ϵ-caprolactone) (PCL) and poly(δ-valerolactone) (PVL) under solvent-free conditions at room temperature, in the presence of benzyl alcohol, 1,5-pentandiol and propargyl alcohol as external initiators. In addition, star-shaped PCL and PVL have also been synthesized using pentaerythritol and dipentaerythritol initiators. The polyesters were characterized by 1H NMR spectroscopy, gel permeation chromatography (GPC) and thermal analysis. Low-molecular weight polymers were obtained. The polymerization proceeds via an activated monomer mechanism.
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Jain, I., Malik, P. (2022). Copper(II)-Catalyzed Ring Opening Polymerization of Cyclic Esters. In: Gupta, B., Jawaid, M., Kaith, B.S., Rattan, S., Kalia, S. (eds) Polymeric Biomaterials and Bioengineering. Lecture Notes in Bioengineering. Springer, Singapore. https://doi.org/10.1007/978-981-19-1084-5_8
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DOI: https://doi.org/10.1007/978-981-19-1084-5_8
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