Investigation of the plasticizing ability of alkoxylated alcohol adipates

Among alternative plasticizers, adipic acid esters occupy a leading position in terms of consumption in plasticized materials and PVC-based products. The main advantages of these plastics, in addition to low toxicity and high biodegradability, are the increased frost resistance and thermal stability of compounds with their presence. In order to expand the range of eco-friendly PVC plasticizers, esters of adipic acid and oxyalkylated alcohols of various structures have been obtained. To investigate the possibility of using them as PVC plasticizers, a theoretical assessment of the plasticizing effect of diesters in relation to PVC has been given based on the calculation of Hansen solubility parameters, and thermodynamic compatibility of adipates with PVC has been investigated. The manufacturability of esters within PVC compositions has been studied according to the values of critical temperatures of PVC dissolution. The transition intervals of plastics from a glassy state to a highly elastic state, as well as depression of the glass transition temperature of compositions containing adipates, have been determined. The influence of the alcohol structure on the plasticizing ability of ether, as well as important technological and operational characteristics of esters in the composition of polymer materials, has been determined.