Positron annihilation in amine-cured epo
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Y. Y. Wang; H. Nakanishi; Y. C. Jean; T. C. Sandreczki
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Article
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1990
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John Wiley and Sons
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English
โ 625 KB
## Abstract Positron annihilation spectroscopy has been used to study free volume in an arnineโcured epoxy as a function of external pressure at temperatures above and below the glass transition temperature. The observed __ortho__โpositronium lifetime ฯ~3~ and formation probability __I__~3~ decreas