Browsing Research Output by Author "Bruinsma, O.S.L."
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The continuous depolymerization of filled polytetrafluoroethylene with a continuous process
Van der Walt, I.J.; Bruinsma, O.S.L.; Grunenburg, A.T.; Nel, J.T.; Maluleke, G.G. (Wiley, 2008)A new method for beneficiating unfilled as well as filled polytetrafluoroethylene (PTFE) waste has been developed. This process does not use any carrier gas while forming the depolymerization products. It enables polymer ... -
A kinetic expression for the pyrolytic decomposition of polyterafluoroethylene
Van der Walt, Izak J.; Neomagus, Hein W.J.P.; Bruinsma, O.S.L.; Nel, Johann T.; Crouse, Philippus L. (Elsevier, 2008)Despite the fact that the thermal decomposition of polytetrafluoroethylene has been extensively studied over the past six decades, some inconsistencies regarding the kinetic parameters, e.g. the order of the reaction, ... -
Thermal reduction of barium sulphate with carbon monoxide: a thermogravimetric study
Hlabela, S.P.; Neomagus, H.W.J.P.; Waanders, F.B.; Bruinsma, O.S.L. (Elsevier, 2010)The kinetic parameters of the reduction of barium sulphate to barium sulphide using carbon monoxide fractions of 2.4–9.6% and temperatures of 850–1000 °C, using an isothermal thermogravimetric method, were obtained. This ...