Please be advised that the site will be down for maintenance on Sunday, September 1, 2024, from 08:00 to 18:00, and again on Monday, September 2, 2024, from 08:00 to 09:00. We apologize for any inconvenience this may cause.
Browsing Chemical Engineering by UP Author "Atanasova, Maria Todorova"
-
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 ...
-
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 ...
-
Moyo, Dennis Simbarashe; Van der Merwe, E.M. (Elizabet Margaretha); Rademeyer, Melanie; Malan, F.P. (Frederick); Atanasova, Maria T.; Mapossa, António Benjamim; Focke, Walter Wilhelm
(Springer, 2023-07)
This manuscript reports the investigation of the polymorphic behaviour of fipronil using a systematic comparison of the thermochemical and structural properties of different crystal forms obtained in this study as well as ...
-
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 ...
-
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 ...
-
Vyalikh, Anastasia; Atanasova, Maria T.; Focke, Walter Wilhelm; Makarova, Anna A.; Krajnc, Andraz; Mali, Gregor
(Elsevier, 2023-12)
Please read abstract in the article.
-
Oosthuizen, Hester; Du Toit, Elizabeth Louisa; Loots, Mattheus Theodor; Atanasova, Maria T.; Wesley-Smith, James; Crous, Stephani; Weldhagen, Michelle; Focke, Walter Wilhelm
(Springer, 2023-01)
The potential of a blended cellulose solvent, consisting of a 1:1 mass ratio of choline chloride with the ionic liquid 1-ethyl-3-methylimadazolium acetate, was evaluated by using a film-casting technique. When comparing ...
-
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 ...
-
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 ...