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Mechanical Properties of Comonomer‐Compositionally Fractionated Poly[(3‐hydroxybutyrate)‐ co ‐(3‐mercaptopropionate)] with Low 3‐Mercaptopropionate Unit Content
Author(s) -
Yu Fang,
Dong Tungalag,
Zhu Bo,
Tajima Kouichirou,
Yazawa Kouji,
Inoue Yoshio
Publication year - 2007
Publication title -
macromolecular bioscience
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.924
H-Index - 105
eISSN - 1616-5195
pISSN - 1616-5187
DOI - 10.1002/mabi.200600295
Subject(s) - comonomer , chemistry , cupriavidus necator , yield (engineering) , elongation , materials science , nuclear chemistry , bacteria , composite material , ultimate tensile strength , organic chemistry , polymer , copolymer , biology , polyhydroxyalkanoates , genetics
The mechanical properties, such as Young's modulus, yield strength, and the elongation at breakage, were investigated for several sulfur‐containing biopolymers P(3HB‐ co ‐3MP). A series of P(3HB‐ co ‐3MP) samples with 3MP unit content ranging from 6.6 to 39.1 mol‐% was biosynthesized by fermentation using the PHA‐synthesizing bacteria Cupriavidus necator . For comparison, the bacterially synthesized P(3HB) and P(3HB‐ co ‐3HP) with the 3HP unit content ranging from 13.1 to 21.1 mol‐% were also investigated. It was found that the sulfur‐containing P(3HB‐ co ‐3MP) is much more durable to stretching. Notably, P(3HB‐ co ‐3MP) with the 3MP unit content of only 6.6 mol‐% was found to show excellent mechanical properties.