Loading patent…
AssigneeTechnische Universiteit Eindhoven
InventorsHamid AHMADI, Ruth Maria CARDINAELS, Patrick David ANDERSON
Estimating the term…
A method of producing a polylactic acid (PLA)-based material comprising the steps of: a) providing an amorphous blend comprising poly(L-lactic acid) (PLLA) and poly(D-lactic acid) (PDLA); b) bringing the blend provided in step (a) to a temperature (TC,HC) of between glass transition temperature (Tg) and homocrystalline phase melting temperature (Tm,HC) and maintaining the temperature within this range until at least 5 J/g of homocrystallites are formed with a melting temperature below 180° C.; and c) bringing the resulting material of step (b) to a temperature (TSC) above melting temperature of homocrystalline phase and maintaining the temperature within this range for a sufficient time tSC to generate a poly(lactic acid)-based material with nano-sized stereocomplex crystals having a melting temperature higher than Tm,HC. A PLA-based material obtained or obtainable via said method.
A method of producing a polylactic acid (PLA)-based material comprising the steps of:
(canceled)
(canceled)
(canceled)
A polylactic acid (PLA)-based material comprising poly(L-lactic acid) (PLLA) and poly(D-lactic acid) (PDLA) and/or copolymers thereof, wherein the material contains at least 2% by weight, at least 5% by weight, at least 10% by weight, or at least 20% by weight, of nano-sized stereocomplex crystals, based on the total weight of the material.
(canceled)
(canceled)
(canceled)
A polylactic acid (PLA)-based material comprising poly(L-lactic acid) (PLLA), poly(D-lactic acid) (PDLA);
A polylactic acid (PLA)-based material comprising poly(L-lactic acid) (PLLA), poly(D-lactic acid) (PDLA), wherein the combined weight of PLLA and PDLA forms at least 80 wt. % of the total weight of the material, and wherein a sample of the PLA material exhibits strain-hardening behaviour when subjected to strain or deformation at a temperature above 160° C., and wherein the same sample of the PLA material no longer exhibits strain-hardening behaviour when subjected to strain or deformation subsequent to being heated to a minimum temperature of 210° C.
(canceled)
Dependencies are inferred from the claim text.