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Free Volume Relaxation in Polycarbonate as a Function of Physical Aging

Published online by Cambridge University Press:  16 February 2011

Kenneth J. Heater  and
Phillip L. Jones
Kenneth J. Heater
Affiliation:
Duke University, Department of Mechanical Engineering and Materials Science, Durham, North Carolina 27706
Phillip L. Jones
Affiliation:
Duke University, Department of Mechanical Engineering and Materials Science, Durham, North Carolina 27706
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Abstract

Room temperature free volume relaxation of polycarbonate as a function of aging time at 393K has been evaluated via positron annihilation lifetime spectroscopy. Free volume response data were normalized and modeled using an expression of the Williams-Watts form. The process of physical aging is discussed in terms of the trends associated with the resultant characteristic relaxation time constants and distribution of relaxation times.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 215: Symposium R2 – Structure, Relaxation and Physical Aging of Glassy Polymers , 1990 , 207
Copyright
Copyright © Materials Research Society 1991

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