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

Autor: Katalin Czifrák, Csilla Lakatos, Marcell Árpád Kordován, Lajos Nagy, Lajos Daróczi, Miklós Zsuga, Sándor Kéki
Jazyk: angličtina
Rok vydání: 2020
Předmět:
Zdroj: Polymers, Vol 12, Iss 9, p 1928 (2020)
Druh dokumentu: article
ISSN: 12091928
2073-4360
DOI: 10.3390/polym12091928
Popis: 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 (Rf) and shape recovery (Rr) ratios.
Databáze: Directory of Open Access Journals
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