Please use this identifier to cite or link to this item: https://doi.org/10.1039/a806620e
Title: Polyimide films from linear and network precursors
Authors: Wang, J.
Srinivasan, M.P. 
Ng, S.-C. 
Issue Date: 1999
Source: Wang, J., Srinivasan, M.P., Ng, S.-C. (1999). Polyimide films from linear and network precursors. Journal of Materials Chemistry 9 (3) : 655-659. ScholarBank@NUS Repository. https://doi.org/10.1039/a806620e
Abstract: Pyromellitic anhydride'-4,4'-diaminodiphenyl ether (PMDA-DDE) polyimide precursor was blended with mellitic acid hexamethyl ester-4,4'- diaminodiphenyl (MAHE-DDE) precursor to obtain polyimide films. The films from blends required higher temperatures for complete imidisation than those necessary for either of the pure constituents. Storage moduli and secondary glass transition temperatures improved with increase of imidisation temperature and amount of the network constituent, indicating that the latter provided some reinforcement to the mixed films. Differential thermal analysis (DTA) of the blends and the changes in morphology with composition observed by scanning electron microscopy suggested that the two constituents may be cross-linked.
Source Title: Journal of Materials Chemistry
URI: http://scholarbank.nus.edu.sg/handle/10635/66760
ISSN: 09599428
DOI: 10.1039/a806620e
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