Structural complexity inherited from a microbial synthesis of glycolipids was translated into unique poly(sophorolipid) biomaterials. ROMP polymn. of natural diacetylated lactonic sophorolipids gave a high mol. wt. polymer with asym. bola-amphiphilic repeating units. The poly(sophorolipid) chain alternates C18 oleic-like aliph. segments (90% cis-configured double bonds) with bulky diacetylated disaccharide moieties. The poly(sophorolipid) is a solid at room temp. that undergoes the glass transition at 61 °C and melts at 123 °C. The crystal phase is assocd. with ordered packing of the aliph. chain segments. The semicryst. poly(sophorolipid) also displays a long-range order (d = 2.44 nm) involving sophorose groups that persist after crystal phase melting (in high-T diffractograms) with a slightly shortened distance (2.27 nm).

Glycolipid biomaterials: synthesis and solid-state properties of a poly(sophorolipid)

ZINI, ELISA;SCANDOLA, MARIASTELLA;
2009

Abstract

Structural complexity inherited from a microbial synthesis of glycolipids was translated into unique poly(sophorolipid) biomaterials. ROMP polymn. of natural diacetylated lactonic sophorolipids gave a high mol. wt. polymer with asym. bola-amphiphilic repeating units. The poly(sophorolipid) chain alternates C18 oleic-like aliph. segments (90% cis-configured double bonds) with bulky diacetylated disaccharide moieties. The poly(sophorolipid) is a solid at room temp. that undergoes the glass transition at 61 °C and melts at 123 °C. The crystal phase is assocd. with ordered packing of the aliph. chain segments. The semicryst. poly(sophorolipid) also displays a long-range order (d = 2.44 nm) involving sophorose groups that persist after crystal phase melting (in high-T diffractograms) with a slightly shortened distance (2.27 nm).
E. Zini; M. Gazzano; M. Scandola; R.A. Gross
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/11585/77837
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