@misc{neffe_functionalizable_coaxial_2021, author={Neffe, A.,Zhang, Q.,Hommes-Schattmann, P.,Wang, W.,Xu, X.,Ahmad, B.,Williams, G.,Lendlein, A.}, title={Functionalizable coaxial PLLA/PDLA nanofibers with stereocomplexes at the internal interface}, year={2021}, howpublished = {journal article}, doi = {https://doi.org/10.1557/s43578-021-00260-z}, abstract = {Multifunctionality of electrospun polylactic acid (PLA) nonwovens was generated by the morphological design of nanofibers. Coaxial fibers with a lower number average molar mass Mn PLLA core and a higher Mn PDLA shell form PDLA–PLLA stereocrystals at the interface, induced by annealing. In tensile tests under physiological conditions, the core–shell fibers with higher crystallinity (22% compared to 11–14%) had lower Young’s moduli E (9 ± 1 MPa) and lower elongation at break εb (26 ± 3%) than PDLA alone (E = 31 ± 9 MPa, εb = 80 ± 5%), which can be attributed to simultaneous crystallization and relaxation effects. Gelatin incorporated in the PDLA phase was presented on the outer surface providing a biointerface putatively favorable for cell adherence. Gelatin incorporation did not influence the crystallization behavior but slightly lowered Tg (60 → 54 °C). Employing exclusively polymers established in the clinic, multifunctionality was generated by design.}, note = {Online available at: \url{https://doi.org/10.1557/s43578-021-00260-z} (DOI). Neffe, A.; Zhang, Q.; Hommes-Schattmann, P.; Wang, W.; Xu, X.; Ahmad, B.; Williams, G.; Lendlein, A.: Functionalizable coaxial PLLA/PDLA nanofibers with stereocomplexes at the internal interface. Journal of Materials Research. 2021. vol. 36, no. 14, 2995-3009. DOI: 10.1557/s43578-021-00260-z}}