Comonomer-unit compositions, physical properties and biodegradability of bacterial copolyhydroxyalkanoates.
The comonomer-unit compositions and their distribution of as-produced bacterial copolyesters, including poly(3-hydroxybutyrate-co-3-hydroxyvalerate), poly(3-hydroxy-butyrate-co-3-hydroxypropionate), poly(3-hydroxybutyrate-co-3-hydroxyhexanoate) and poly(3-hydroxybutyrate-co-4-hydroxybutyrate) are described in this paper. Each copolyester sample can be comonomer-unit compositionally fractionated into several fractions, indicating that the original copolymers are mixtures of copolymers with different comonomer-unit compositions. The effects of comonomer-unit compositional distribution on thermal properties, crystallization, biodegradability and solid-state phase behavior are investigated using comonomer compositionally fractionated copolymers.
Feng
Lidan
L
Department of Biomolecular Engineering, Tokyo Institute of Technology, 4259 Nagatsuta, Midori-ku, Yokohama 226-8501, Japan.
Yoshie
Naoko
N
Asakawa
Naoki
N
Inoue
Yoshio
Y
D001419:Bacteria / Q000737:chemistry / Q000378:metabolism*; D001673:Biodegradation, Environmental; D003460:Crystallization; D006885:Hydroxybutyrates / Q000737:chemistry* / Q000302:isolation & purification / Q000378:metabolism*; D011091:Polyesters / Q000737:chemistry* / Q000302:isolation & purification / Q000378:metabolism*; D013816:Thermodynamics
D006885:Hydroxybutyrates; D011091:Polyesters