Modelling the Kinetics of Extraction of a Mixture of Stabilisers from Polyethylene

Modelling the Kinetics of Desorption of Ingredients from Polymers

“…Broadening of the limits of application of the models is connected with determination of the temperature dependences of the empirical coefficients of diffusion and the solubility of the ingredients. The temperature dependences of the empirical coefficients were obtained for desorption of stabilisers from polyolefins [13,17,18,20,21] and plasticisers from polyvinyl chloride [19]. Determination of the dependence of the empirical coefficients on the chemical nature of the ingredients under different desorption process conditions has proved to be less successful, which explains the small volume of experimental data.…”