Microstructure and Stability of Polymer Nanocomposite

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In this paper, the inorganic nanoparticles (SiO2, Al2O3) hybrid Polyimide (PI) films are prepared by Sol-Gel. The films are yellowish and transparent and the thicknesses are about 2050 m. The microstructure and nanoparticle distribution in this hybrid films are studied by SEM, TEM and EDS. The results show that there are SiO2 and Al2O3 particles in the inorganic hybrid PI films and they are stable. The particle sizes are about 5  40 nm. The most significant conclusion can be drawn as following: 1) PI is made up a large number of domains about 200 300 nm2 which is not changed by high energy electron beam; 2) the nanoparticles of SiO2 and Al2O3 are dispersed and embedded in PI, which are stable usually, but while they are irradiated by high energy electron beam of 200 keV, the smaller particles disappear whose melting point are lower, and the bigger grow up; 3) the crystalline of Al2O3 is better than that of SiO2.

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Journal: TechConnect Briefs
Volume: 2, Technical Proceedings of the 2006 NSTI Nanotechnology Conference and Trade Show, Volume 2
Published: May 7, 2006
Pages: 791 - 794
Industry sectors: Advanced Materials & Manufacturing | Personal & Home Care, Food & Agriculture
Topics: Advanced Materials for Engineering Applications, Composite Materials
ISBN: 0-9767985-7-3