Fibers from Polyhdroxyalkanoates and Its Derivatives and Blends

Abstract

Polyhydroxyalkonates are a diverse family of biopolyester produced by bacteria as energy and carbon storage materials. Poly(3-hydroxybutyrate) (PHB) is the most common type of PHA used commercially. PHB is an thermoplastic material with a melting temperature of about 180 °C and glass temperature that is below room temperature. Structure and properties of PHB are highly dependent on the conditions prevailing during fiber production. For instance, slow cooling from the melt produced large spherulites and rapid cooling results in amorphous state [01Yam]. It was suggested that PHB assumed orthorhombic or α-form or the β-zigzag form depending on the annealing conditions. PHB crystallized into orthorhombic form when annealed under high tension and into β-zigzag form when annealed under high tension [01Yam]. Based on X-ray diffraction patterns, it was found that the amorphous molecules transformed into orthorhombic crystal when annealed without tension and when annealed under tension, the amorphous regions were stretched and crystallized into the β-form [01Yam].

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Title
Fibers from Polyhdroxyalkanoates and Its Derivatives and Blends
Book Title
Innovative Biofibers from Renewable Resources
In
Biothermoplastics from Renewable Resources
Book DOI
10.1007/978-3-662-45136-6
Chapter DOI
10.1007/978-3-662-45136-6_65
Part of
Volume
Editors
Authors
  • Narendra Reddy (3)
  • Yiqi Yang (4)
  • Author Affiliation
  • 3 Centre for Emerging Technologies, Jain University, Bangalore, India
  • 4 Department of Textiles, Merchandising and Fashion Design, University of Nebraska-Lincoln, Lincoln, NE, USA
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