Welcome to the new version of CaltechAUTHORS. Login is currently restricted to library staff. If you notice any issues, please email coda@library.caltech.edu
Published May 18, 2007 | Supplemental Material
Journal Article Open

Molecular Basis of the Shish-Kebab Morphology in Polymer Crystallization

Abstract

In the rich and long-standing literature on the flow-induced formation of oriented precursors to polymer crystallization, it is often asserted that the longest, most extended chains are the dominant molecular species in the "shish" of the "shish-kebab" formation. We performed a critical examination of this widely held view, using deuterium labeling to distinguish different chain lengths within an overall distribution. Small-angle neutron-scattering patterns of the differently labeled materials showed that long chains are not overrepresented in the shish relative to their concentration in the material as a whole. We observed that the longest chains play a catalytic role, recruiting other chains adjacent to them into formation of the shish.

Additional Information

© 2007 American Association for the Advancement of Science. Received 19 January 2007; accepted 23 March 2007. This work was performed using SANS-U of the Institute for Solid State Physics, the University of Tokyo (no. 05.5542). Supported by the NSF Division of Materials Research (DMR-0505393 and Materials Research Science and Engineering Center DMR-0080065).

Attached Files

Supplemental Material - Kimata.SOM.pdf

Files

Kimata.SOM.pdf
Files (591.0 kB)
Name Size Download all
md5:08f649e7157774697d6f9e6b34680004
591.0 kB Preview Download

Additional details

Created:
August 19, 2023
Modified:
October 18, 2023