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(A) Digital photos of six scaffolds. (B) Core and shell morphology of six scaffolds. (C) XRM images of the 3-D structure and cross-section of C1@1S6B. (D) The porosity of six scaffolds. (E) XRD, (F) DSC, (G) TGA and (H) DTG diagrams of PPDO, PGCL and PGLA yarns.
