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.

Elastic Neutron Scattering and the Glass Transition in Thin Polycarbonate Films

Published

Author(s)

Christopher L. Soles

Abstract

Incoherent elastic neutron scattering measurements are performed on hydrogenous polycarbonate films spun coat onto Si wafer. The drop of the elastic scattering intensity as a function of temperature is analyzed within the framework of theDebye-Waller factor to extract a mean-square-displacement of the supported films. The contributions from the polymer, in comparison to the Si, appear to dominate the mean-square displacement for films as thin as 75 . We demonstrate that the mean-square displacement is diminished as the thickness of the film is reduced. There is also a significant increase in the apparent glass transition temperature of the confined polymer film as the degree of confinement increases.
Citation
Elastic Neutron Scattering and the Glass Transition in Thin Polycarbonate Films

Keywords

glass transition, incoherent elastic neutron scattering, neutron scattering, polycarbonate films, thin polycarbonate films

Citation

Soles, C. (2001), Elastic Neutron Scattering and the Glass Transition in Thin Polycarbonate Films, Elastic Neutron Scattering and the Glass Transition in Thin Polycarbonate Films (Accessed May 21, 2024)

Issues

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

Created January 1, 2001, Updated February 17, 2017