Macromolecular Rapid Communications

Cover image for Vol. 35 Issue 13

Cover Picture: Macromol. Rapid Commun. 11/2004

25_11/2004Cover: Biodegradable strong poly[(R)-3-hydroxybutyrate] (P(3HB)) fibers with a tensile strength of 1.32 GPa and Young's modulus of 18.1 GPa were processed from ultra-high-molecular-weight P(3HB) by cold-drawing and two-step-drawing procedures. The molecular and higher-ordered structure in the P(3HB) mono-filament were analyzed by a micro-beam X-ray diffraction by using a Fresnel Zone Plate technique in synchrotron radiation and linearly scanned perpendicular to the fiber axis. It was revealed that P(3HB) fiber has a new core-sheath structure with two types of molecular conformations: one is a 21 helix conformation in the sheath region and the other is a planar zigzag conformation in the core region.

Further details can be found in the Communication by T. Iwata,* Y. Aoyagi, M. Fujita, H. Yamane, Y. Doi, Y. Suzuki, A. Takeuchi, and K. Uesugi on page 1100.

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