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Gordeyev, Sergey; Nekrasov, Yu. P.

doi:10.1023/a:1006629800491

Cited by 45 publications

(20 citation statements)

References 8 publications

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“…0.6 Â 10 6 ) [6e9]. Initially, Gordeyev and Nekrasov were successful in obtaining commercial-P(3HB) fibers with a tensile strength of 190 MPa by a process of annealing after melt spinning [6]. Then, Schmack et al reported that the tensile strength of high-speed spun-P(3HB) fibers increased to 330 MPa by annealing [7].…”

Section: Introductionmentioning

confidence: 99%

Mechanical properties and enzymatic degradation of poly[(R)-3-hydroxybutyrate] fibers stretched after isothermal crystallization near Tg

Tanaka

Yabe

Teramachi

et al. 2007

Polymer Degradation and Stability

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Section: Introductionmentioning

confidence: 99%

Mechanical properties and enzymatic degradation of poly[(R)-3-hydroxybutyrate] fibers stretched after isothermal crystallization near Tg

Tanaka

Yabe

Teramachi

et al. 2007

Polymer Degradation and Stability

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“…11,12 PHB is also a highly crystalline thermoplastic that can be extruded, injection molded, and spun 13,14 into fibers without modification of traditional polymer processing equipment. PHB also has a low elongation at break (less than 10%), an impact strength of 3 kJ/mm 2 , a modulus (1.7 GPa), and a fracture stress of 35 MPa.…”

Section: Introductionmentioning

confidence: 99%

Crystallization of poly(3‐hydroxybutyrate) by exfoliated graphite nanoplatelets

Miloaga

Hosein

Misra

et al. 2007

J of Applied Polymer Sci

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Poly(3-hydroxybutyrate) (PHB) has been shown to be efficiently nucleated by exfoliated graphite nanoplatelets (xGnP). The nucleating effect of xGnP was investigated using differential scanning calorimetry, optical microscopy and atomic force microscopy. Nonisothermal crystallization of PHB from the melt required lower activation energies for PHB containing 1 wt % and 3 wt % xGnP (À214 and À102 kJ/mol respectively) than for pure PHB (À60 kJ/mol). A kinetic study of the PHB/xGnP crystallization employing a modified form of the Avrami equation revealed that the presence of xGnP increased the PHB crystallization temperature, as well as the crystallization rates, and generated smaller and more numerous spherulites. Optical microscopy and atomic force microscopy confirmed the incorporation of xGnP into the lamellar structure of the PHB spherulites and provided insight into the influence of xGnP on spherulite size and lamellae thickness.

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“…In the case of P(3HB) fibers, three research groups [14][15][16] have succeeded in obtaining melt-spun fibers with a tensile strength of 190-330 MPa from P(3HB) (weight-averagemolecular-weight (M w ) of 0.3-0.8 Â 10 6 ) produced by wild-type bacteria. However, the strength of the fibers is not enough for industrial and medical applications such as fishing line and suture.…”

Section: Introductionmentioning

confidence: 99%

Processing of a Strong Biodegradable Poly[(R)‐3‐hydroxybutyrate] Fiber and a New Fiber Structure Revealed by Micro‐Beam X‐Ray Diffraction with Synchrotron Radiation

Iwata

Aoyagi

Fujita

et al. 2004

Macromol. Rapid Commun.

114

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Summary: Biodegradable poly[(R)‐3‐hydroxybutyrate] (P(3HB)) fibers with high tensile strength of 1.32 GPa were processed from ultra‐high‐molecular‐weight P(3HB) by a method combining cold‐drawing and two‐step‐drawing procedures at room temperature. The distribution of molecular structures in a mono‐filament was analyzed by micro‐beam X‐ray diffraction with synchrotron radiation. It was revealed that the P(3HB) fiber has a new core‐sheath structure consistent with two types of molecular conformations: a 21 helix conformation in the sheath region and a planar zigzag conformation in the core region.P(3HB) fiber processed by cold‐drawing in ice water and two‐step drawing at room temperature, and subsequently annealing at 50 °C.imageP(3HB) fiber processed by cold‐drawing in ice water and two‐step drawing at room temperature, and subsequently annealing at 50 °C.

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Cited by 45 publications

References 8 publications

Mechanical properties and enzymatic degradation of poly[(R)-3-hydroxybutyrate] fibers stretched after isothermal crystallization near Tg

Mechanical properties and enzymatic degradation of poly[(R)-3-hydroxybutyrate] fibers stretched after isothermal crystallization near Tg

Crystallization of poly(3‐hydroxybutyrate) by exfoliated graphite nanoplatelets

Processing of a Strong Biodegradable Poly[(R)‐3‐hydroxybutyrate] Fiber and a New Fiber Structure Revealed by Micro‐Beam X‐Ray Diffraction with Synchrotron Radiation

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