Skip to main content
U.S. flag

An official website of the United States government

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

Influence of Polymer Topology on Crystallization in Thin Films

Published

Author(s)

Jack F. Douglas, Andrea Giuntoli, Alexandros Chremos

Abstract

We investigate how varying molecular topology of polymers influences crystallization in thin polymer films. In particular, we simulate linear and star polymers having a progressively increasing number of arms (f ≤ 16) for fixed molecular mass of polymer for a model linear polymer exhibiting crystallization in a thin film geometry, but no apparent crystallization in the corresponding bulk material. The degree of crystallization of the polymer film at long times decreases progressively with increasing f, and no crystallization is observed beyond f = 8. Crystallization for smaller values of f develops as a sigmoidally-shaped wavefront initiating from the supporting crystalline interface. We suggest that large shape fluctuations and the competition of length scales of star polymers with high f lead to inhibited crystallization.
Citation
Journal of Chemical Physics

Keywords

polymer crystallization, star polymers, glass-formation, crystallization front, short chain branching

Citation

Douglas, J. , Giuntoli, A. and Chremos, A. (2020), Influence of Polymer Topology on Crystallization in Thin Films, Journal of Chemical Physics (Accessed June 19, 2024)

Issues

If you have any questions about this publication or are having problems accessing it, please contact reflib@nist.gov.

Created January 22, 2020, Updated April 27, 2020