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X‐Ray and Electron Diffraction Study of Poly( p ‐dioxanone)
Author(s) -
Furuhashi Yukiko,
Nakayama Atsushi,
Monno Teruo,
Kawahara Yutaka,
Yamane Hideki,
Kimura Yoshiharu,
Iwata Tadahisa
Publication year - 2004
Publication title -
macromolecular rapid communications
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.348
H-Index - 154
eISSN - 1521-3927
pISSN - 1022-1336
DOI - 10.1002/marc.200400399
Subject(s) - lamellar structure , crystallography , orthorhombic crystal system , crystallization , electron diffraction , materials science , transmission electron microscopy , selected area diffraction , electron crystallography , diffraction , isothermal process , crystal structure , chemistry , optics , nanotechnology , physics , thermodynamics , organic chemistry
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.