Abstract
Development of a sustainable route for the synthesis of star-shaped poly(ε-caprolactone) using renewable feedstocks in clean solvents (scCO2 and bulk) with the catalysts Sn(Oct)2 or the enzyme Novozym 435.
Highlights
The accumulation of non-biodegradable plastics on earth has resulted in an increasing need for biodegradable polymers, ideally produced by green technologies
Synthesis of star D-sorbitol-PCL via Sn(Oct)[2] catalysed ring opening polymerisation (ROP) in the bulk and in supercritical CO2 (scCO2) Before investigating the star PCL polymers initiated by D-sorbitol, less complex polymer architectures were synthesised from simpler alcohols such as 1,6-hexanediol, glycerol, pentaerythritol and triglycerol in the bulk (Scheme S1)
The effect of the catalytic system (Sn(Oct)[2] and Novozym 435) on the architecture of star polymer was investigated in detail by NMR (1H and 31P), MALDI-TOF, SEC-MALS and Mark Houwink plot
Summary
The accumulation of non-biodegradable plastics on earth has resulted in an increasing need for biodegradable polymers, ideally produced by green technologies. We investigated the effect of the number and the variable length of the arms of the star PCL on the thermal properties of the polymers
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