Poly(Ethylene Furanoate) along Its Life-Cycle from a Polycondensation Approach to High-Performance Yarn and Its...

Area of Science:

• Polymer Science
• Materials Science
• Sustainable Polymers

Background:

• Poly(ethylene furanoate) (PEF) is a bio-based polymer with potential to replace poly(ethylene terephthalate) (PET).
• PEF offers comparable mechanical properties to PET, making it attractive for fiber applications.
• Efficient synthesis and processing are crucial for PEF's commercial viability.

Purpose of the Study:

• To report on the pilot scale synthesis and melt spinning of PEF.
• To optimize catalyst and solid-state polycondensation (SSP) for high intrinsic viscosity.
• To characterize the mechanical properties and crystallization behavior of PEF fibers.

Main Methods:

• Pilot scale synthesis of PEF.
• Catalyst optimization and solid-state polycondensation (SSP).
• Melt spinning of multifilament yarns.
• Mechanical property testing (tensile strength, elongation, modulus).
• Crystallization analysis using Differential Scanning Calorimetry (DSC) and X-ray Diffraction (XRD).

Main Results:

• Achieved intrinsic viscosities up to 0.85 dL·g^-1.
• Melt-spun yarns exhibited high tensile strength (up to 65 cN·tex^-1), 6% elongation, and 1370 cN·tex^-1 modulus.
• Post-SSP PEF showed 47% crystallinity (α-PEF phase detected by XRD).
• As-spun yarns were amorphous; drawn yarns showed a less pronounced crystalline phase.

Conclusions:

• Pilot scale production of PEF is feasible.
• Optimized processing yields PEF fibers with excellent mechanical properties.
• PEF demonstrates tunable crystallization behavior during melt spinning and drawing.
• PEF shows promise as a sustainable, high-performance fiber material.