Browsing by Author "Wesley-Smith, James"

Browsing by Author "Wesley-Smith, James"

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  • Blooming of chlorfenapyr from polyethylene films 
    Mapossa, António Benjamim; Moyo, Dennis Simbarashe; Wesley-Smith, James; Focke, Walter Wilhelm; Androsch, Rene (American Institute of Physics, 2020-11)
    FTIR, in ATR and in transmission modes, enabled the tracking of the migration of the insecticide Chlorfenapyr to the surface of a polymer film. It also allowed estimation of the apparent solubility in the polymer. However, ...
  • Blooming of insecticides from polyethylene mesh and film 
    Mapossa, António Benjamim; Sibanda, Mthokozisi Mayibongwe; Moyo, Dennis Simbarashe; Kruger, Taneshka; Focke, Walter Wilhelm; Androsch, Rene; Boldt, Regine; Wesley-Smith, James (Taylor and Francis, 2021)
    Malaria remains a public health concern with vector control still the vital component of disease prevention, control, and elimination strategies. Recent years has seen a “stalling” in the progress made towards the reduction ...
  • Cellulose acetate/organoclay nanocomposites as controlled release matrices for pest control applications 
    Mphateng, Thabang N.; Mapossa, António Benjamim; Wesley-Smith, James; Ramjee, Shatish; Focke, Walter Wilhelm (Springer, 2022-05)
    This study aimed to develop cellulose-based polymer matrices as controlled release devices for plant-based insect repellents and attractants, with the aim of finding sustainable and environmentally friendly pest control ...
  • Characterizing CaCO3 particle dispersion in blown film 
    Radebe, Lucky; Wesley-Smith, James; Focke, Walter Wilhelm; Ramjee, Shatish (De Gruyter, 2023-01)
    A novel method for the visualization and quantification of the state of dispersion of calcium carbonate particles in thin blown polymer films is described. Particle imaging was achieved by elemental mapping using energy ...
  • Development, characterization and modeling of mosquito repellent release from microporous devices 
    Sitoe, Alcides Everildo José; Mapossa, António Benjamim; Focke, Walter Wilhelm; Muiambo, Herminio; Androsch, René; Wesley-Smith, James (Wiley, 2020-12)
    Nanocomposite strands with mosquito repellent DEET or Icaridin incorporated in a poly(ethylene-co-vinyl acetate) (EVA) matrix, with either pyrogenic silica or an organoclay as a nanofiller, were prepared by a twin-screw ...
  • 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 ...
  • Formulating calcium carbonate masterbatches 
    Radebe, Lucky; Wesley-Smith, James; Focke, Walter Wilhelm; Ramjee, Shatish (De Gruyter, 2023-01)
    The effects of filler content, filler particle size and surface coating, as well as the natures of the wax and metal stearate lubricants on the properties of calcium carbonate-filled linear low-density polyethylene compounds ...
  • Morphology, thermal properties and crystallization kinetics of ternary blends of the polylactide and starch biopolymers and nanoclay : the role of nanoclay hydrophobicity 
    Wokadala, Obiro Cuthbert; Ray, Suprakas Sinha; Bandyopadhyay, Jayita; Wesley-Smith, James; Emmambux, Mohammad Naushad (Elsevier, 2015-08)
    Polylactide/butylated-starch/nanoclay (70/25.5/4.5 wt%) composites were prepared by melt blending with nanoclays of varying hydrophobicity. Electron microscopy studies indicated that the interphase boundary interaction ...
  • A novel cost-effective choline chloride/ionic liquid solvent for all-cellulose composite production 
    Oosthuizen, Hester; Du Toit, Elizabeth L.; 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 ...
  • The search for healthy sugar substitute in aid to lower the incidence of early childhood caries : a comparison of sucrose, xylitol, erythritol and stevia 
    Moelich, Nadine; Potgieter, Nicoline; Botha, Francien Susanna; Wesley-Smith, James; Van Wyk, Candice (South African Dental Association, 2022-09)
    AIM : A pursuit to And a healthy alternative to sucrose with less cariogenic potential, which can potentially lower the incidence of Early Childhood Caries (ECC), by means of comparison. METHODS : Primary tooth enamel ...
  • 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 ...