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Polymer nanocomposites have attracted wide interest as a method of enhancing polymer properties and extending their applications. Surface potential decay has been used widely as a tool to monitor charge transport and trapping characteristics of insulating materials. Polyimide (PI) as an engineering material has been paid more attention due to high thermal and chemical stability, good mechanical property...
Polyimides (PI) are widely used in microelectronic industries because of their outstanding characteristics such as good mechanical, thermal and dielectric properties. In this paper, a novel PI/SiO2-Al2O3 co-doped composite film was prepared. The inorganic phases of SiO2 were added to PAA solution by sol-gel method with TEOS as precursor, while the Al2O3 phase was added as particles by ultrasonic-mechanical...
Hybrid nanocomposites based on crystalline nanoparticles dispersed in polymer matrix has been widely studied in the past few years because of the ability of these materials to combine both properties of organic polymer and inorganic nanoparticles. The aim of this work is to tune mechanical properties of piezoelectric polymer by adding nanoparticles to the matrix. In this paper alumina nanoparticles...
Polymer nanocomposites have attracted wide interest as a method of enhancing polymer properties and extending their applications. In polymer nanocomposites, chemically dissimilar components are combined at the nanometer scale, and stronger interactions between the polymer and nanoparticles produce markedly improved materials with better electrical, mechanical, thermal, and rheological performances...
Gold - poly(dimethylsiloxane) (Au - PDMS) nanocomposite freestanding films were prepared and used to study the binding of Human Serum Albumin (HSA) to polyclonal anti-HSA. A new method of synthesis was developed for sensing application when most of the gold nanoparticles have to be localized in the surface layer. The localized surface plasmon resonance band in gold nanoparticles is used to monitor...
High dispersion of nanoparticles in transparent polymer matrices is the prerequisite to maintain the transparency of matrices. However, it is hard to fabricate the nancomposites with high visible light transmittance even at low nanoparticle concentrations. In this work, highly transparent Polyvinyl Butyral (PVB)/ZnO nanocomposites were fabricated by using the two-step process. Firstly, the monodispersed...
Novel non-fragile porous conductive nanocomposite vapor sensors with variant volume porosities and specific surface areas have been fabricated from PMMA and carbon nanoparticles. Sensing films were obtained by well known dry-cast non-solvent induced phase separation (NIPS) method. Porous composite structures have been characterized by SEM, BET and water evaporation methods. Response behavior of fabricated...
The recording mechanism of a holographic grating in inorganic or organic nanoparticle-polymer composites is described. The diffraction and multiple recording properties of a volume hologram in a nanoparticle-polymer composite film are also described.
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