Abstract
Polyaddition using isocyanate and polyol forms polyurethane elastomer (PUE). However, this method has rarely been applied to the construction of PUEs containing sucrose. Hence, the introduction of sucrose (disaccharide) as a cross-linker via polyaddition remains a challenging subject in polymer chemistry. Here, we report the synthesis of PUEs using an aromatic isocyanate (4,4’-diphenylmethane diisocyanate), polyols including a polyether polyol (polytetramethylene glycol) and two polyester polyols (polycaprolactone and polycarbonate diols), and sucrose as a crosslinker by a one-shot method. The PUEs containing sucrose were successfully produced. The use of sucrose was essential to obtain the desired PUEs containing sucrose units in the main chain.
Highlights
A variety of organic polymer materials are utilized in our daily lives, and those derived from sugar have been actively investigated in recent years
Nuclear Magnetic Resonance (NMR) Spectroscopy Analyses by 1H NMR and 13C NMR spectroscopy revealed that the polymers obtained were undoubtedly polyurethane elastomer (PUE) containing sucrose and that these polymers were composed from a urethane segment and sucrose
The NMR analyses indicated that sucrose was attached to the main PU chain as a cross-linker
Summary
A variety of organic polymer materials are utilized in our daily lives, and those derived from sugar have been actively investigated in recent years. Polymer materials (e.g., polyurethanes) containing sugar are expected to replace materials derived from petroleum and to be used as bio-based materials. (2015) Synthesis and Properties of Polyurethane Elastomers Containing Sucrose as a Cross-Linker. Inoue on such a background, we are interested in solid elastomers that are widely used for commercial products, and we attempted to develop polymer materials with new functionalities. Polyurethane elastomers (PUEs) containing natural products have been used as biocompatible materials in the medical field [27] [28]. We focused on the synthesis of PUEs containing natural products. The use of sugar as a natural product was essential to obtain the desired PUEs containing sugar units in the main chain. Non-reducing sugar, which retains hydroxyl groups in solution, was ideal to introduce sugar units into the main chain. We report a synthesis of novel PUEs containing sucrose using the aromatic isocyanate (4,4’-diphenylmethane diisocyanate (MDI)), different types of polyols (polyether polyol: polytetramethylene glycol and polyester polyols: polycaprolactone and polycarbonate diols), and sucrose by a one-shot method [29] to form the corresponding PUEs containing sucrose units in the main chain
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