Journal
ULTRAMICROSCOPY
Volume 108, Issue 10, Pages 1220-1223Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.ultramic.2008.04.018
Keywords
polyimide; block copolymer; nanoporous; SEM
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Nanoporous polyimide films were prepared from triblock copolyimides. A thermally labile polymer, poly(propylene glycol), was incorporated into polyimides based on 4,4-(hexafluoroisopropylidene)-diphthalic anhydride to obtain triblock copolyimides. Nanofoams were formed by thermolysis of the labile block. The thermal properties of the copolymers were investigated by thermogravimetric analysis (TGA) and differential scanning calorimetry (DSC). The nanopores were characterized by scanning electron microscopy (SEM). (C) 2008 Elsevier B.V. All rights reserved.
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