Melt-Spun P(3HB)/P(3HB-co-4HB) Monofilaments: Cyclic Loading Behavior and Fabrication into Textile Structures
Sabrina Kopf, Sophie M. K. Hobrack, Dan Åkesson, Maria Persson, Mikael Skrifvars
TL;DR
Researchers made sustainable textiles from melt-spun P(3HB)/P(3HB-co-4HB) monofilaments, which showed good mechanical resilience and thermal stability.
Contribution
The study demonstrates the feasibility of processing P(3HB)/P(3HB-co-4HB) monofilaments into textiles with mechanical resilience and thermal robustness.
Findings
Melt-spun P(3HB)/P(3HB-co-4HB) monofilaments have tensile strength of ~138 MPa and elongation at break of ~55%.
Cyclic loading showed hysteresis that diminishes after the first cycle and can be reset with a 120 s relaxation.
Adding beta tricalcium phosphate (β-TCP) improved thermal stability but reduced tensile strength.
Abstract
Melt-spun polyhydroxyalkanoate monofilaments were successfully processed into woven and knitted textiles using industrial machinery, demonstrating their feasibility for textile applications. The filaments, composed of P(3HB)/P(3HB-co-4HB), exhibited an average tensile strength of ∼138 MPa and an elongation at break of ∼55%, with crystallinity of ∼30%. Cyclic loading of the filaments revealed pronounced hysteresis during the first cycle, which diminished in subsequent cycles. However, a relaxation time of 120 s was sufficient to reset the molecular conformational changes that occurred during the previous cycles. Furthermore, the incorporation of beta tricalcium phosphate (β-TCP) particles during melt spinning reduced tensile strength but improved thermal stability, enhancing processability. These findings highlight the potential of P(3HB)/P(3HB-co-4HB) monofilaments for sustainable…
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Taxonomy
Topicsbiodegradable polymer synthesis and properties · Polymer crystallization and properties · Dyeing and Modifying Textile Fibers