期刊
MACROMOLECULAR RAPID COMMUNICATIONS
卷 25, 期 11, 页码 1100-1104出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/marc.200400110
关键词
fibers; mechanical properties; poly[(R)-3-hydroxybutyrate]; synchrotron radiation; X-ray
Biodegradable poly [(R)-3-hydroxybutyrate] (P(3HB)) fibers with high tensile strength of 1.32 GPa were processed from ultra-high-molecular-weight P(3HB) by a method combining cold-drawing and two-step-drawing procedures at room temperature. The distribution of molecular structures in a mono-filament was analyzed by micro-beam X-ray diffraction with synchrotron radiation. It was revealed that the P(3HB) fiber has a new core-sheath structure consistent with two types of molecular conformations: a 2(1) helix conformation in the sheath region and a planar zigzag conformation in the core region.
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