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Stereocomplex PLA for composites
1st June 2021
Researchers at the Fraunhofer Institute for Applied Polymer Research (IAP), based in Potsdam, Germany, have received funding to develop new reinforcing PLA fibres for composites.
The challenge is that conventional PLA has a relatively low temperature resistance and technical fibres can be produced most economically using the melt spinning process.
The Fraunhofer IAP team has developed more thermally stable stereocomplex PLA (sc-PLA), in which the PLA molecules form a special crystal structure. This allows the production of fibres which have a melting point that is 40-50°C higher than conventional PLA fibres.
The researchers are now working with fibre producer Trevia to optimise a melt spinning process for sc-PLA filament yarns.