期刊
MACROMOLECULAR BIOSCIENCE
卷 7, 期 6, 页码 810-819出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/mabi.200600295
关键词
biodegradable polymer; crystallization; mechanical properties; 3-mercaptopropionate; sequence distribution
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.
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