Volume 56, Number 5, December 2001
|755 - 761
|Interdisciplinary physics and related areas of science and technology
|01 December 2003
Morphogenesis of lamellar polymer crystals
Institut de Chimie des Surfaces et Interfaces, CNRS
15, rue Jean Starcky, B.P. 2488, 68057 Mulhouse Cedex, France
Accepted: 21 September 2001
Using a previously developed simulation model we study the changes in morphology of two-dimensional chain crystals caused by annealing. A series of various intermediate crystalline states with different stability exhibiting a non-monotonous evolution of the internal energy and the degree of local order was found. This clearly shows the generic non-equilibrium character of polymer crystals. Thus, the classification scheme of equilibrium thermodynamic phases cannot be used to describe such transient states in polymer crystals. At large length scales the structural changes resemble a liquid-like behaviour while at the same time at small length scales the chains show an improvement of crystalline order. The term morphogenesis reflects this complex kinetic behaviour. In addition, simulations with constant heating rates also demonstrate the importance of relaxation processes in polymer crystals.
PACS: 81.10.Aj – Theory and models of crystal growth; physics of crystal growth, crystal morphology and orientation / 61.41.+e – Polymers, elastomers, and plastics / 68.55.-a – Thin-film structure and morphology
© EDP Sciences, 2001
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.