Synthesis and Characterization of Novel Poly(Amide-Imide-Sulfone)/TiO2 Nanocomposites via Sol–Gel Route
Nanoscale titanium dioxide (TiO2) particles in poly(amide-imide-sulfone) (PAIS) were successfully fabricated by an in-situ sol–gel process. Bis[4,4′-(trimelliticamido)phenyl] sulfone (3) was synthesized as a new dianhydride. This monomer was characterized by its FT-IR, 1HNMR and 13CNMR spectra. The poly(amic acid) precursors was prepared by reaction of dianhydride 3 with 4,4′-diaminodiphenyl sulfone, which was further mixed with tetrabutyl orthotitanate (Ti(OBu)4) and actylacetone and then heated to complete polymerization and production of nanocomposite. The nanocomposites were characterized by different methods such as FT-IR, UV-Vis, XRD spectroscopy and thermal gravimetric analysis (TGA). Transmission electron microscope (TEM) and scanning electron microscope (SEM) images show that the TiO2 phase is well dispersed in the polymer matrix. The titanium content in the composites was varied from 0 to 20 wt.%. The effects of TiO2 content on the composites properties were also investigated.
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Document Type: Research Article
Publication date: 01 August 2012
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