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  • Optical behaviour of copper phthalocyanine preparations for inkjet inks
    Otáhalová, Lenka ...
    The present study investigates the preparation of the copper phthalocyanine pigment for inkjet printing inks. The pigment particle size distribution was measured with laser diffraction at different ... times of wet rnilling. Simultaneously, the absorbance spectra in a visible-near infrared spectral region of the corresponding diluted pigment dispersions were measured. At the beginning of the milling process, the particle size distribution is bimodal, showing the presence of aggregates and agglomerates. During the second hour ofrnilling, the particle size distribution changes to unimodal due to the breaking of agglomerates, and the corresponding absorbance spectra change accordingly. Further milling diminishes the size of pigment aggregates up to the steady state value of around 130 nm, where also the absorbance in the corresponding spectra does not increase. Adetailed analysis of intensity and position of the absorbance peak at 340 nm in dependence on the milling time and pigment concentration con firms the idea that an optical spectroscopy could be used for the assessment of optimal milling time required for the preparation of pigments with the maximum absorption ability.
    Vir: Acta chimica slovenica. - ISSN 1318-0207 (Vol. 58, no. 2, 2011, str. 212-216)
    Vrsta gradiva - članek, sestavni del
    Leto - 2011
    Jezik - angleški
    COBISS.SI-ID - 4699162

    Povezava(-e):

    http://acta.chem-soc.si/58/58-2-212.pdf
    Digitalna knjižnica Slovenije - dLib.si

vir: Acta chimica slovenica. - ISSN 1318-0207 (Vol. 58, no. 2, 2011, str. 212-216)

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