Biotechnology Letters

, Volume 17, Issue 6, pp 583–588

Structure and properties of poly(3-hydroxybutyrate-co-4-hydroxybutyrate) produced by Alcaligenes latus

  • Choong-Kyung Kang
  • Satoshi Kusaka
  • Yoshiharu Doi
Article

DOI: 10.1007/BF00129382

Cite this article as:
Kang, CK., Kusaka, S. & Doi, Y. Biotechnol Lett (1995) 17: 583. doi:10.1007/BF00129382

Summary

Random copolymers of 3-hydroxybutyrate (3HB) and 4-hydroxybutyrate (4HB) with a wide range of compositions varying from 0 to 83 mol% 4HB were produced by Alcaligenes latus from the mixed carbon substrates of 3-hydroxybutyric and 4-hydroxybutyric acids. The structure and physical properties of P(3HB-co-4HB) were characterized by1H and13C NMR spectroscopy, gel-permeation chromatography, and differential scanning calorimetry. The isothermal radial growth rates of spherulites of P(3HB-co-4HB) were much slower than the rate of P(3HB) homopolymer. The enzymatic degradation rates of P(3HB-co-4HB) films by a PHB depolymerase were strongly influenced by the copolymer composition.

Copyright information

© Chapman & Hall 1995

Authors and Affiliations

  • Choong-Kyung Kang
    • 1
  • Satoshi Kusaka
    • 2
  • Yoshiharu Doi
    • 1
  1. 1.Polymer Chemistry Laboratory, The Institute of Physical and Chemical Research (RIKEN)SaitamaJapan
  2. 2.Akebono R & D Center, 5-4-71SaitamaJapan

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