Block Copolymers of Poly(ω-Pentadecalactone) in Segmented Polyurethanes: Novel Biodegradable Shape Memory Polyurethanes

Katalin Czifrák; Csilla Lakatos; Marcell Árpád Kordován; Lajos Nagy; Lajos Daróczi; Miklós Zsuga; Sándor Kéki

doi:10.3390/polym12091928

Block Copolymers of Poly(ω-Pentadecalactone) in Segmented Polyurethanes: Novel Biodegradable Shape Memory Polyurethanes

Polymers (Basel). 2020 Aug 26;12(9):1928. doi: 10.3390/polym12091928.

Authors

Katalin Czifrák¹, Csilla Lakatos¹, Marcell Árpád Kordován¹, Lajos Nagy¹, Lajos Daróczi², Miklós Zsuga¹, Sándor Kéki¹

Affiliations

¹ Department of Applied Chemistry, University of Debrecen, Egyetem tér 1, H-4032 Debrecen, Hungary.
² Department of Solid State Physics, University of Debrecen, Bem tér 18/b, H-4026 Debrecen, Hungary.

Abstract

In this report, the synthesis of poly(ω-pentadecalactone) (PPDL) (co)polymers and their incorporation into polyurethanes (PUs) are reported. Optimal conditions for the ring-opening polymerization (ROP) of ω-pentadecalactone (PDL) using dibutyltin dilaurate catalyst were established. For the synthesis of linear and crosslinked PUs, 50 kDa poly(ε-caprolactone) (PCL) and 1,6-hexamethylenediisocyanate (HDI) were used. The obtained polyurethanes were characterized by Attenuated Total Reflectance Fourier-Transform Infrared spectroscopy (AT-FTIR), differential scanning calorimetry (DSC), and dynamical mechanical analysis (DMA). The DMA of the selected sample showed a rubbery plateau on the storage modulus versus temperature curve predicting shape memory behavior. Indeed, good shape memory performances were obtained with shape fixity (R_f) and shape recovery (R_r) ratios.

Keywords: copolymerization; poly(ω-pentadecalactone), polyurethane copolymers; shape memory; ω-pentadecalactone.

Abstract

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