| Abstract Scope |
This work presents a comprehensive investigation into the sustainable production of polymeric fibers using pressurized gyration (pressure spinning), a scalable and environmentally efficient technique. Beginning with a critical review of common fiber manufacturing methods—including electrospinning, phase separation, and drawing—the study highlights the substantial environmental burdens associated with toxic solvents and high energy consumption. Pressurized gyration emerges as a greener alternative due to its high-throughput processing, compatibility with water-based polymer solutions, and minimal hazardous byproducts.
Building on this, a series of experimental studies were conducted to evaluate the energy efficiency, production rate, and fiber morphology across varying process parameters. Using Polyethylene oxide (PEO) and Polyvinylpyrrolidone (PVP), the influence of solution viscosity, applied gas pressure, collector distance (100–200 mm), and vessel diameter (60 mm vs. 75 mm) was systematically explored. Results demonstrated that larger vessels increased centrifugal force, enhancing production efficiency by up to 21% while reducing energy per gram. A custom conical collector enabled practical collector distance adjustments, yielding improved fiber alignment and diameters as small as 0.4 µm. Additionally, the successful production of core-sheath fibers (PEO-sheath, PVP-core) achieved rates of up to 64 g/hr with energy consumption decreasing as pressure increased.
This body of work underscores the synergy between green chemistry principles and engineering design in reducing energy demand and material waste. By optimising process conditions and using non-toxic, water-soluble polymers, this study demonstrates a viable pathway toward scalable, sustainable polymer fiber manufacturing. |