Synthesis and Enzymatic Degradation of Novel Polyurethanes Having Ester Bonds

Novel linear polyurethanes were synthesized by the reaction of methyl(S)-2,6-diisocyanatohexanoate (LDI) with bis(2-hydroxyethyl) terephthalate (BHET) and poly(ethylene glycol) (PEG). The polymers were obtained in relatively high yields (95~98%). Their number-average molecular weights determined by...

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Bibliographic Details
Published in:KOBUNSHI RONBUNSHU 2008, Vol.65(7), pp.471-476
Main Authors: KAMEI, Midori, KURATANI, Kazuhide, IWANAGA, Maki, INABA, Namiko, KOUZAI, Hiroaki
Format: Article
Language:Japanese
Subjects:
Biodegradable
Bis(2-hydroxyethyl) terephthalate
Enzyme
Methyl (S)-2,6-Diisocyanatohexanoate
Polyurethane
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Summary:Novel linear polyurethanes were synthesized by the reaction of methyl(S)-2,6-diisocyanatohexanoate (LDI) with bis(2-hydroxyethyl) terephthalate (BHET) and poly(ethylene glycol) (PEG). The polymers were obtained in relatively high yields (95~98%). Their number-average molecular weights determined by GPC were in the range from 2.1×104 to 2.4×104 and the polymers showed a glass-transition temperature at about −13°C by dynamic mechanical analysis. The polymers were rubber-like, elastic materials with high tensile strength of ca. 83 MPa. Enzymatic degradation of the polymers esulted in a weight loss of up to 98%. Moreover, numerous holes and hollow structures were observed on the surface of the degraded films by scanning electron microscopy.
ISSN:0386-2186
1881-5685
DOI:10.1295/koron.65.471