期刊
ULTRAMICROSCOPY
卷 108, 期 10, 页码 1220-1223出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.ultramic.2008.04.018
关键词
polyimide; block copolymer; nanoporous; SEM
类别
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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