Prediction of compatibility in polymer-plasticizer systems

  • Prediction of compatibility in polymer-plasticizer systems
  • Prediction of compatibility in polymer-plasticizer systems
  • Prediction of compatibility in polymer-plasticizer systems
  • Why is polymer-plasticizer incompatibility important?
  • Compatibility between a polymer and a plasticizer produces stable and homogeneous coating film. It is often characterized by a high miscibility between the plasticizer and the polymer blend. Polymer-plasticizer incompatibility influences not only the mechanical properties but also drug release , .
  • How to assess polymer-plasticizer compatibility?
  • In this study, different methods for the assessment of polymer-plasticizers compatibility were proposed and compared. We have used Dmol3 and COSMO model to generate σ-profiles of the compounds. We have seen that σ-profiles give valuable information regarding polarities, hb-donors and hb-acceptors, wich allow to guess the solubility of compounds.
  • How does polymer-plasticizer incompatibility affect drug release?
  • Polymer-plasticizer incompatibility influences not only the mechanical properties but also drug release , . Permanence of a plasticizer means its tendency to remain in the plasticized material; i.e. long term compatibility. It depends on the size of the molecule and on its rate of diffusion.
  • Do plasticizers affect polymeric coating properties?
  • Various studies have been reported in the literature, investigating the effect of plasticizers on the properties of the final polymeric coating. Laboulfie et al. studied the effect of plasticizer on the mechanical resistance and thermal behavior of composite coating films.
  • Can MD simulation predict the solubility parameters of polymers and plasticizers?
  • The amorphous models of SEBS with TA, DEP, DOS, and WO were constructed, and the solubility parameters of each substance were calculated by MD method. The relative error between the simulated value and the literature value was less than 3%, indicating that MD simulation can be used to predict the solubility parameters of polymers and plasticizers.
  • How to determine plasticizer compatibility in PVC?
  • Four methods of determining plasticizer compatibility in PVC have been evaluated and compared for PVC formulations containing three plasticisers individually and in combination. GC–MS was used to quantify the plasticizer exudation on the surface of plasticised PVC samples stressed as described in the ASTM D3291 compatibility test.

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