  Trehalose diesters exhibiting $\alpha$,$\omega$-unsaturation are glycolipids
which can be easily polymerized by ADMET (acyclic diene metathesis)
polymerization. In this paper, enzymatic esterification was performed to
selectively esterify primary hydroxyl groups of trehalose (6 and 6'-positions)
with vinyl undecenoate. The vinyl ester was beforehand obtained by
palladium-catalyzed transesterification of undecenoic acid with vinyl acetate.
The resulting trehalose diundecenoate was homopolymerized and copolymerized
with undecenyl undecenoate in order to obtain random copolymers with different
compositions. The synthesis of such copolymers was confirmed by 1 H NMR
spectroscopy and size exclusion chromatography (SEC). Their solid-state phase
separation were investigated by DSC and X-ray scattering as function of
temperature and their solution self-assembly was investigated by dynamic light
scattering (DLS) in water.
