Browsing Engineering, Built Environment and Information Technology by UP Author "Atanasova, Maria Todorova"

Browsing Engineering, Built Environment and Information Technology by UP Author "Atanasova, Maria Todorova"

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  • Alkyl ammonium intercalation of Mozambican bentonite 
    Massinga, Pedro Horacio; Focke, Walter Wilhelm; De Vaal, Philip L.; Atanasova, Maria Todorova (Elsevier, 2010-07)
    Organo-bentonites containing quaternary ammonium surfactants were prepared using purified bentonite from the Boane deposit in Mozambique. The intercalation was effected by intimate mixing of the surfactants into a concentrated ...
  • Characterization of urea-modified Palabora vermiculite 
    Muiambo, Herminio Francisco; Focke, Walter Wilhelm; Atanasova, Maria Todorova; Benhamida, Aida (Elsevier, 2015-03)
    Replacing the exchangeable interlayer ions in Palabora vermiculite with magnesium, aluminumor iron (III) ions does not affect the exfoliation onset temperature (456± 11 °C). However, co-intercalation of minor amounts ...
  • Crystal structure and magnetic properties of CuSb2O4 
    Atanasova, Maria Todorova; Strydom, Andre M.; Schutte, Casper Jan Hendrik; Prinsloo, Linda Charlotta; Focke, Walter Wilhelm (Springer, 2014-05)
    The crystal structure of a copper antimonite (CuSb2O4) was determined from X-ray powder diffraction data. The structure was solved by simulated annealing in direct space using the Rietveld method. The compound crystallizes ...
  • Dextrin nanocomposites as matrices for solid dosage forms 
    Phillips, Justin; Venter, Jaco-Louis; Atanasova, Maria Todorova; Wesley-Smith, James; Oosthuizen, Hester; Emmambux, Mohammad Naushad; Du Toit, Elizabeth Louisa; Focke, Walter Wilhelm (American Chemical Society, 2020-03)
    Safe application of water-insoluble acaricides requires fast release from solid dosage systems into aquatic environments. Dextrin is a water-soluble form of partially hydrolyzed starch, which may be used as matrix material ...
  • Investigation of the structural and electrical conductivity properties in pure and cation exchanged rectorite 
    Vyalikh, Anastasia; Atanasova, Maria T.; Focke, Walter Wilhelm; Makarova, Anna A.; Krajnc, Andraz; Mali, Gregor (Elsevier, 2023-12)
    Please read abstract in the article.
  • Thermal characterisation of metal stearate lubricant mixtures for polymer compounding applications 
    Phillips, Justin; Weldhagen, Michelle; Mhlabeni, Thobile; Radebe, Lucky; Ramjee, Shatish; Wesley-Smith, James; Atanasova, Maria T.; Focke, Walter Wilhelm (Elsevier, 2021-05)
    Metal stearate blends are potential lubricants and filler dispersants in polymer compounding. Therefore, the thermal phase behaviour of binary blends of calcium stearate and magnesium stearate with zinc stearate was ...
  • Thermal properties of sodium-exchanged Palabora vermiculite 
    Muiambo, Herminio Francisco; Focke, Walter Wilhelm; Atanasova, Maria Todorova; Van der Westhuizen, Isbe; Tiedt, Louwrens R. (Elsevier, 2010-09)
    Palabora “vermiculite” represents an interstratified vermiculite-biotite containing less than 50% vermiculite. The sodium-exchanged form was prepared by immersion in saturated brine at ambient conditions. The sodium content ...