Browsing by Author "Sellaiyan, S"

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    Understanding the effect of nanoporosity on optimizing the performance of self-healing materials for anti-corrosion applications
    (IOP Publishing, 2011-01-01) Sellaiyan, S; Smith, SV; Hughes, AE; Miller, A; Jenkins, DR; Uedono, A
    The chromate-based epoxy primer film was prepared on glass and metal surfaces using various graded doctor blades. The quality and consistency of the films was assessed using scanning electron microscopy and the porosity within the film characterized by positron annihilation lifetime spectroscopy. The positron lifetime (τ) distribution for the epoxy polymer matrix was resolved using the CONTIN program. The free volume was found from the ortho-positronium component. The optimum thickness for the films was established for future structure/activity studies. © 2014 IOP Publishing LTD
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    Using x-ray tomography, PALS and Raman spectroscopy for characterization of inhibitors in epoxy coatings
    (Elsevier, 2012-08) Hughes, AE; Mayo, SC; Yang, YS; Markley, T; Smith, SV; Sellaiyan, S; Uedono, A; Hardin, SG; Muster, TH
    Model paint materials were generated by adding a range of inorganic materials into an epoxy. The inorganic materials included inhibitors (Zn3(PO4)2 and SrCrO4) and a filler (rutile TiO2).The SrCrO4 system was characterized using SEM, TEM, PALS and Raman spectroscopy and found to have an even distribution of inhibitor in the polymer matrix. X-ray tomography was performed on the mixed SrCrO4/TiO2 and Zn3(PO4)2/TiO2 systems. A new technique called data constrained modelling was combined with the tomographic technique to produce a 3D distribution of the inorganic phases within the polymer matrix. © 2011 Elsevier B.V.