After the stone, bronze, and iron ages, welcome to the plastic age! An astonishing 6,300 million tons of plastic waste have been generated between 1950-2022. Meanwhile, the annual production of plastic materials has reached over 400 million tons in 2023 (excluding synthetic fibers and rubbers!), and a minimum of 8 million tons of plastic is estimated to enter the oceans every year. Within this plastic landscape, man-made textile fibers contribute significantly with annual production exceeding 110 million tons. Polyester, in particular, takes center stage, with annual production of more than 60 million tons. Recent reports underscore polyester's role as a major source of microplastics, particularly in marine environments, amplifying concerns due to its non-biodegradable nature when compared to natural fibers like cotton, wool, or regenerated fibers like viscose. While natural fibers present alternatives, they have limitations, including capacity constraints and environmental impacts such as carbon and water footprints. Recognizing these challenges, the United Nations Environment Assembly and the European Environmental Agency advocate for the future application of bioplastics. However, most of the biodegradable plastics like polylactic acid (PLA), polyhydroxyalkanoates (PHAs), plasticized thermoplastic starch (TPS), polybutylene succinate (PBS), poly(butylene-co-adipate terephthalate) (PBAT), etc. have limitations in the processing step (like thermal degradation, low melt strength or low crystallization rate), or post-processing steps (such as dyeability, finishing, etc.), application (shrinkage, durability, pressing, etc.), or end of life (biodegradation rate in the marine environment). Addressing these contradictions necessitates a strategic pathway to develop a compound or new copolymer that reconciles processability, physical properties, and biodegradation. This presentation will delve into ongoing Mari-Curie-funded “PolyBioDeg” and JTF-funded “BIOTTEK” projects at Senbis Polymer Innovations and collaborative partners, exploring findings related to the melt-spinning process, mechanical and thermal properties, and biodegradation assessments in the quest for a sustainable solution.