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X-Ray and Electron Diffraction Study of Poly(p-dioxanone)

✍ Scribed by Yukiko Furuhashi; Atsushi Nakayama; Teruo Monno; Yutaka Kawahara; Hideki Yamane; Yoshiharu Kimura; Tadahisa Iwata

Publisher
John Wiley and Sons
Year
2004
Tongue
English
Weight
171 KB
Volume
25
Category
Article
ISSN
1022-1336

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✦ Synopsis

Abstract

Summary: Solution‐grown lamellar crystals of poly(p‐dioxanone) (PPDX) have been crystallized isothermally from butane‐1,4‐diol at 100 °C. The crystal structure of PPDX has been determined by interpretation of X‐ray fiber diagrams of PPDX fibers and electron diffraction diagrams of lozenge‐shaped chain‐folder lamellar crystals. The unit cell of PPDX is orthorhombic with space group __P__2~1~2~1~2~1~ and parameters: a = 0.970 nm, b = 0.742 nm, and c (chain axis) = 0.682 nm. There are two chains per unit cell, which exist in an antiparallel arrangement.

Transmission electron micrograph of PPDX chain‐folded lamellar crystals obtained by isothermal crystallization and its electron diffraction diagram.

imageTransmission electron micrograph of PPDX chain‐folded lamellar crystals obtained by isothermal crystallization and its electron diffraction diagram.

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