Ultrasonic monitoring of polymer properties from the melt to the solid state: influence of chemical/structural details

DOI	Resolve DOI: https://doi.org/10.1557/PROC-142-245
Author	Search for: Piché, L.¹; Search for: Lessard, G.¹; Search for: Massines, F.¹; Search for: Hamel, A.¹
Affiliation	National Research Council of Canada
Format	Text, Article
Conference	Symposium U - Nondestructive Monitoring of Materials Properties, November 28-30, 1988, Boston, Massachusetts, USA
Abstract	An ultrasonic technique is described for the simultaneous measurement of specific volume, V, sound velocity, v, and attenuation, a, at frequencies between f = 0.5 and f = 15 MHz, in a wide range of temperature (- 150 to + 400°C) and pressure (up to 2 kbars). The results (V,v,a) are translated into a complex modulus, M* = M’ + iM” and analyzed in terms of the thermodynamic state of the material. Typical results for amorphous and semi-crystalline polymers are presented which show that the technique is a probe of the fundamental features of these materials (glass transition, crystallization, melting, molecular structure) which determine processability and end use properties. The method should prove of great interest for quality and process control.
Publication date	1988
Publisher	Cambridge University Press
In	MRS Proceedings 142, 245.
Language	English
Peer reviewed	Yes
NRC number	NRCC 29725 NRC-IGM88TC-403-800-G
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Record identifier	9e8d8c39-4fc9-41e4-bd77-c00ea2b21fc9
Record created	2020-04-15
Record modified	2020-05-08