Journal
POLYMER DEGRADATION AND STABILITY
Volume 78, Issue 1, Pages 83-93Publisher
ELSEVIER SCI LTD
DOI: 10.1016/S0141-3910(02)00122-2
Keywords
thermal stability; epoxy resin; poly(epsilon-caprolactone)
Categories
Ask authors/readers for more resources
The results of an investigation concerning the thermal behaviour of an uncured and an amine-cured diglycidyl ether of bisphenol-A (DGEBA) epoxy resin blended with poly(epsilon-caprolactone) (PCL) are reported. The nature and extent of degradation were analysed by means of integral (TGA) and derivative (DTG) thermogravimetry. The decomposition kinetics of both uncured and cured blends were elucidated by the Coats and Redfern equation. Pure PCL has been seen to be more thermally stable than uncured DGEBA, but more unstable than cured DGEBA. For uncured blends, thermogravimetric curves clearly displayed more than one degradation step, while for the cured blends essentially a single weight loss step was observed. The cured blends showed enhanced thermal stability and char formation when compared to the corresponding uncured ones of identical DGEBA/PCL ratio. Besides, it has also been evidenced that although the uncured blends are miscible and the cured ones are immiscible, both systems exhibited negative deviations of the apparent activation energy from the additivity rule. (C) 2002 Elsevier Science Ltd. All rights reserved.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available