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

โœ Scribed by Choong-Kyung Kang; Satoshi Kusaka; Yoshiharu Doi

Publisher
Springer Netherlands
Year
1995
Tongue
English
Weight
334 KB
Volume
17
Category
Article
ISSN
0141-5492

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โœฆ Synopsis

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 by ~H and 13C 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.

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Microbial Synthesis and Properties of Po
Microbial Synthesis and Properties of Poly(3-hydroxybutyrate-co-4-hydroxybutyrate)
โœ Saito, Yuji; Nakamura, Shigeo; Hiramitsu, Masaya; Doi, Yoshiharu ๐Ÿ“‚ Article ๐Ÿ“… 1996 ๐Ÿ› John Wiley and Sons ๐ŸŒ English โš– 433 KB ๐Ÿ‘ 1 views

Microbial synthesis of copolymers of CR1-3-hydroxybutyrate (3HB) and 4-hydroxybutyrate (4HB), P(3HB-co-4HB), by Alcaligenes eutrophus, Alcaligenes latus, and Comamonas acidovorans from various carbon sources has been studied. The copolyester compositions varied from 0 to 100mol% 4HB, depending on th