News Column

Data on Polyenes Reported by Researchers at University of Waterloo

February 3, 2014

By a News Reporter-Staff News Editor at Clinical Trials Week -- Investigators discuss new findings in Polyenes. According to news reporting originating in Waterloo, Canada, by NewsRx journalists, research stated, "This article presents a comparative study on the effects of using nano -alumina (Al2O3) on toughening mechanisms and structural behaviors of polypropylene (PP) nanocomposites. The role of using dispersant in nanocomposite preparation was also investigated."

The news reporters obtained a quote from the research from the University of Waterloo, "For nanocomposite preparation, mixing of the elements was performed using a Haake Poly Drive blending machine at 175 degrees C and the rotor speed of 50rpm. The notched Izod impact energy obtained for PP was about 27J/m and by the addition of nano -Al2O3 (4 wt%) to PP, the notched Izod impact energy increases up to approximate to 43J/m. However, higher concentration of nano -Al2O3 in the nanocomposite resulted in the reduction of Izod impact property due to nano -Al2O3 agglomeration. Fourier transform infrared spectroscopy (FTIR) spectra of pure PP and PP/nano -Al2O3 composites demonstrated Al-O bond at 568 cm(-1) for nanocomposite spectrum that indicates the creation of nano -Al2O3 particles. The x-ray diffraction patterns and FTIR spectra of PP/nano -Al2O3 composites showed that the intensity of the peaks when dispersant was used slightly increased and the arrangement of the peaks are normalized. This observation is attributed to homogeneous dispersion of nano -Al2O3 filler in the matrix when dispersant was used."

According to the news reporters, the research concluded: "Scanning electron micrograph of impact fractured surface showed that the fracture surface of PP/nano -Al2O3 composite becomes rougher with increasing the content of filler."

For more information on this research see: The effect of dispersant on toughening mechanism and structure behaviors of Polypropylene Nanocomposites reinforced with nano alpha-alumina particles. Journal of Thermoplastic Composite Materials, 2013;26(10):1377-1392. Journal of Thermoplastic Composite Materials can be contacted at: Sage Publications Ltd, 1 Olivers Yard, 55 City Road, London EC1Y 1SP, England. (Sage Publications -; Journal of Thermoplastic Composite Materials -

Our news correspondents report that additional information may be obtained by contacting F. Mirjalili, University of Waterloo, Dept. of Chem Engn, Waterloo Inst Nanotechnol, Waterloo, ON N2L 3G1, Canada. Additional authors for this research include L. Chuah, F. Danafar, M. Soltani and P. Chen (see also Polyenes).

Keywords for this news article include: Canada, Ontario, Waterloo, Polyenes, Hydrocarbons, Nanocomposite, Nanotechnology, Polypropylenes, Organic Chemicals, Emerging Technologies, North and Central America, Clinical Trials and Studies

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Source: Clinical Trials Week

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