Facile Solid-State Mechanochemical Synthesis of Eco-Friendly Thermoplastic Polyurethanes and Copolymers Using a Biomass-Derived Furan Diol
2020
Herein,
we report a facile, one-pot, green, and solvent-less (solid-state)
mechanochemical approach toward the synthesis of eco-friendly polyurethanes
(PUs) at room temperature using biomass-derived 2,5-bis(hydroxymethyl)furan
(BHMF) combined with vibration milling. This approach is simple, straightforward,
and very fast even at room temperature because of the instantaneous
energy generated during grinding. BHMF, a biomass-derived monomer,
was successfully used to synthesize PUs via ball milling; the resulting
PUs have a maximal Mw of 163k and are
flexible (Tg = 96 °C) and thermally
stable (Td = 197 °C). In addition,
ball milling enabled the synthesis of PU copolymers with various diols
and diamines, resulting in variation of the polymer properties, such
as the glass transition temperature (Tg).
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