New Multifunctional PLA Fibers Containing Cinnamon and Turmeric Produced Using Solution Blow Spinning

The aim of this study was to develop PLA fibrous mats containing cinnamon and turmeric as plant-derived bioactive additives using solution blow spinning (SBS) and to investigate their effects on solution rheology, processability, fiber morphology, and filtration performance. The materials were characterized in terms of shear rheological properties and Ostwald–de Waele model parameters, SBS processing window, fiber diameter distribution, initial filtration efficiency, pressure drop, filtration quality factor, and bacteriostatic activity. Particular attention was paid to whether additive-induced rheological changes affected processability and fiber formation and whether functionalization could improve the balance between filtration efficiency and airflow resistance. The additives modified the rheological behavior of the solutions and influenced their processability, while fiber diameter remained within a predominantly submicron range. Under selected processing conditions, the modified mats exhibited lower pressure drop and improved filtration quality factors compared with neat PLA. These findings demonstrate that cinnamon and turmeric can provide both bioactive and functional benefits and indicate their potential for the development of PLA-based filtration materials with selected SSbD-relevant design features.