Changes in the lamellar morphology that occurred during the quiescent isothermal crystallization of absorbable poly(p-dioxanone) (PDS) and PDS/poly(glycolide) block copolymer were studied by synchrotron small-angle X-ray scattering. Important morphological parameters such as the lamellar long period, the thicknesses of the crystal and amorphous phases, and the scattering invariant were estimated as a function of time, and trends observed over a wide range of experimental conditions are discussed. Thicker but more perfect lamellae were detected at higher crystallization temperatures. The breadth of the normalized semilog Lorentz-corrected intensity peak systematically decreased with increasing temperature. In addition, the values of the crystallization half-time and the Avrami exponent (n = 2.5), determined from the real-time changes in the lamellar development, showed superb agreement with the bulk crystallinity data generated from other experimental techniques, such as calorimetry and dielectric relaxation spectroscopy.
No takes yet. Share an insight, caveat, or question.
Andjeli et al. (2000) studied this question.
Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context: