Abstract
An analysis is made of the main known approaches to modelling the kinetics of desorption of plasticisers from polyvinyl chloride under different service conditions. The specific nature of extraction of plasticisers under conditions of counterflow of extractant into the polymer and its influence on the modelling of extraction kinetics are shown. The effectiveness of empirical and mathematical models for predicting the kinetics of extraction of plasticisers is considered. The limited nature of their application is noted, and some reliability of their use only for predicting a certain proportion of plasticisers is shown. A model is developed for predicting the kinetics of different stages of extraction, reflecting the different rates of the process and comprising a power-law function. The temperature dependence of the coefficient of the proposed empirical equation is shown.
Get full access to this article
View all access options for this article.