By a News Reporter-Staff News Editor at Life Science Weekly -- Investigators discuss new findings in Nanocomposites. According to news reporting originating from Esfahan, Iran, by NewsRx correspondents, research stated, "This paper addressed production and characterization of novel type copolyester/titania (TiO2) nanocomposites (NCs). First, the surface of TiO2 was modified by chiral diacid monomer, N-trimellitylimido-L-leucine (TMIL) (1) as a coupling agent to form organomodified TiO2 (O-TiO2) nanoparticles (NPs)."
Our news editors obtained a quote from the research from the Isfahan University of Technology, "Fourier transform infrared (FT-IR) spectroscopy confirmed the presence of coupling agent groups on the surface. Thereafter, a novel chiral poly(amide-ester-imide) (PAEI) was synthesized by step-growth polymerization of diacid monomer 1 with diol, N,N'-(1,3,5,7-tetraoxo-5,7-dihydropyrrolo[3,4-f]isoindole-2,6(1H,3H)-diyl)bis(4-hydroxybenzamide) (2) via tosyl chloride, pyridine and N,N-dimethyformamide as a condensing agent. The incorporation of O-TiO2 NPs into the obtained PAEI provided an opportunity for the construction of polymer-based NCs with novel and powerful properties. The obtained NCs were premeditated using transmission electron microscopy (TEM), FT-IR spectra, thermogravimetric analysis (TGA), field emission scanning electron microscopy (FE-SEM), X-ray diffraction; also the optical properties of the NCs were studied using ultraviolet-visible spectroscopy. The TEM and FE-SEM results showed that the NPs were dispersed homogeneously in PAEI matrix on the nanoscale."
According to the news editors, the research concluded: "TGA data confirmed that the heat stability of the aforementioned NCs in the presence of O-TiO2 NPs was improved."
For more information on this research see: Construction and characterization of poly(amide-ester-imide) nanocomposites containing N-trimellitylimido-L-leucine toughened with a combination of bioactive surface-grafted TiO2. Progress in Organic Coatings, 2013;76(11):1608-1615. Progress in Organic Coatings can be contacted at: Elsevier Science Sa, PO Box 564, 1001 Lausanne, Switzerland. (Elsevier - www.elsevier.com; Progress in Organic Coatings - www.elsevier.com/wps/product/cws_home/504100)
The news editors report that additional information may be obtained by contacting S. Mallakpour, Isfahan Univ Technol, Nanotechnol & Adv Mat Inst, Esfahan 8415683111, Iran (see also Nanocomposites).
Keywords for this news article include: Iran, Asia, Esfahan, Nanotechnology, Emerging Technologies
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