The fabrication of the tunica media-like layer was achieved through 3D printing using PBS-DLS 70-30 and PBS-DLS-PEG 70-25-05 copolymers, chosen for demonstrated suitability in terms of thermal, mechanical, and printability properties . This tubular structure serves not only as the tunica media but also as a template for the subsequent electrospinning process. The 3D printability of the copolymers was previously assessed, utilizing FFF with an Anycubic i3 Mega 3D printer from Shenzhen Anycubic Technology Co., Ltd . Filaments of copolymers were obtained directly from the reactor after the synthesis.