期刊
COMPOSITES SCIENCE AND TECHNOLOGY
卷 67, 期 10, 页码 2175-2182出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.compscitech.2005.11.025
关键词
nanostructure (A); polyimide (A); fullerene C-60 (A); x-ray diffraction (D); heat treatment (E)
The nanostructure formation in polyimide-fullerene composites during thermal treatment was investigated in situ, by means of wide-angle (WAXS) and small-angle X-ray scattering techniques. The WAXS patterns of the PI composites do not reveal the presence of C-60 reflections. However, the Pl/C-60 Composite, obtained by adding the C60 solution to the diamines-solution during the first step of the reaction (preparation of the polyamic acid, PAA), shows a maximum at small X-ray scattering angles. Results show that this intensity maximum is markedly affected by thermal treatment of the Pl/C60 composite, disappearing at high temperature. From in situ X-ray scattering experiments, the manner in which the C-60 nanoparticles are added to the other reactants and influences the properties of the final polymer is discussed. (c) 2005 Elsevier Ltd. All rights reserved.
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