Mechanical Properties and Ordered Structure of Bacterial Poly(3-Hydroxybutyrate-Co-3-Hydroxyhexanoate) Fibers Stretched after Isothermal Crystallization near Tg

Abstract:

Biodegradable fibers of poly(3-hydroxybutyrate-co-3-hydroxyhexanoate) (PHBHHx) were prepared by melt spinning, followed by one-step-drawing with small crystal nuclei grown after isothermal crystallization near the glass transition temperature (Tg) and annealing at room temperature under tension. This new drawing technique is a very attractive method for obtaining flexible fibers from low-molecular-weight biopolyesters produced by recombinant bacteria. The ordered structure of PHBHHx fibers was investigated by tensile measurement, scanning electron microscopy, and wide-angle X-ray diffraction (WAXD). The tensile strength of 10 times one-step-drawn fiber after isothermal crystallization increased to 100 MPa. The WAXD profiles of PHBHHx fibers showed sharp reflections corresponding to highly oriented α-form (2₁ helix conformation) crystal.

• Periodical: Advanced Materials Research (Volumes 284-286)
• Pages: 1774-1777
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.284-286.1774
• Online since: July 2011
• Authors: Chang Kun Ding, Bo Wen Cheng, Qiong Wu
• Keywords: Bacterial Poly(3-hydroxybutyrate-co-3-hydroxyhexanoate), Fiber, Isothermal Crystallization, OneOne-Step-Drawing

References

[1] A.J. Anderson, and E.A. Dawes: Microbiol Rev Vol. 54 (1990), p.450

[2] R.W. Lenz, and R.H. Marchessault: Biomacromolecules Vol. 6 (2005), p.1

[3] S. A. Gordeyev, and Y. P. Nekrasov: J Mater Sci Lett Vol. 18 (1999), p.1691

[4] G. Schmack, D. Jehnichen, R. Vogel, and B. Tandler: J Polym Sci Part B: Polym Phys Vol. 38 (2000), p.2841

[5] H. Yamane, K. Terao, S. Hiki, and Y. Kimura: Polymer Vol. 42 (2001), p.3241

[6] Y. Furuhashi, Y. Imamura, Y. Jikihara, and H. Yamane: Polymer Vol. 45 (2004), p.5703

[7] T. Iwata, Y. Aoyagi, M. Fujita, H. Yamane, Y. Doi, Y. Suzuki, A. Takeuchi, and K. Uesugi: Macromol Rapid Commun Vol. 25 (2004), p.1100

DOI: 10.1002/marc.200490021

[8] T. Iwata, Y. Aoyagi, T. Tanaka, M. Fujita, A. Takeuchi, Y. Suzuki, and K. Uesugi: Macromolecules Vol. 39 (2006), p.5789

[9] T. Tanaka, T. Yabe, S. Teramachi, and T. Iwata: Polym Degrad Stab Vol. 92 (2007), p.1016

[10] T. Tanaka, M. Fujita, A. Takeuchi, Y. Suzuki, K. Uesugi, K. Ito, T. Fujisawa, Y. Doi, and T. Iwata: Macromolecules Vol. 39 (2006), p.2940