Novel Biodegradable Poly(pentadecalactone-co-oxo-crown ether) Studied with Solid-State 1H and 13C NMR |
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| Authors: | Pieter CMM Magusin Brahim Mezari Lars van der Mee Anja RA Palmans EW Meijer |
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| Institution: | 1. Laboratory of Inorganic Chemistry and Catalysis, Eindhoven University of Technology, P.O. Box 513, 5600 MB Eindhoven, The Netherlands;2. Laboratory of Macromolecular and Organic Chemistry, Eindhoven University of Technology, P.O. Box 513, 5600 MB Eindhoven, The Netherlands |
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| Abstract: | Two grades of a novel biodegradable copolymer of ω-pentadecalactone (PDL) and 2-oxo-12-crown-4 (OC), with respective molar compositions of 77/23 and 52/48, were characterized with 1D and 2D MAS 1H and 13C NMR spectroscopy. The results indicate that both copolymers are semi-crystalline with PDL divided over the crystalline and amorphous phase, and OC exclusively located in the amorphous phase. Proton T2 and T1ρ relaxation confirm the existence of small crystalline domains. |
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| Keywords: | biomedical copolyester MAS proton relaxation WISE |
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