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.

In-Line Dielectric Sensor for Chemical Composition Measurements in Molten Polymers

Published

Author(s)

M M. McBrearty, Anthony J. Bur, S Perusich

Abstract

We describe a dielectric sensor that incorporates a flow-through design so that it can be placed in-line on an extruder. Dielectric measurements have been successfully applied for measuring additive concentrations in polymer melts during extrusion processing. Calcium carbonate and alumina filled polystyrene are used to demonstrate sensor capability. Theory and experiment indicate that dielectric measurements of filled polymer melts can quantitatively determine individual or total additive concentrations with an accuracy that depends on the electrical contrast and can exceed 0.1 volume percent with polymers and compounds having one or possibly two dominant additives.
Proceedings Title
Proceedings of the Society of Plastics Engineers Annual Technical Meeting
Volume
20
Conference Dates
May 1, 1999
Conference Location
New York, NY
Conference Title
Society of Plastics Engineers

Keywords

dielectric properties, filled polymers, in-line measurements, material composition, polymer processing

Citation

McBrearty, M. , Bur, A. and Perusich, S. (1999), In-Line Dielectric Sensor for Chemical Composition Measurements in Molten Polymers, Proceedings of the Society of Plastics Engineers Annual Technical Meeting, New York, NY, [online], https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=851531 (Accessed June 20, 2024)

Issues

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

Created December 31, 1998, Updated October 12, 2021