Criteria of efficiency of cellulose acetate plasticization

Using cellulose acetate plastics as an example, it was shown that the search for the optimal concentrations of plasticizers should take into account the compatibility of components, as well as the thermophysical and mechanical properties of plasticized polymers. It was suggested that the temperature range of durability of a plastic, i.e., the difference between its glass-transition and brittle temperatures, be used as a plasticization efficiency criterion. Plasticizers that are well compatible with a polymer at processing temperatures but show a limited compatibility at its service temperatures make it possible to manufacture goods with an extended durable temperature range.