PLASTICIZER BLENDS OF KETAL COMPOUNDS-SEGETIS Serbia

  • PLASTICIZER BLENDS OF KETAL COMPOUNDS-SEGETIS Serbia
  • PLASTICIZER BLENDS OF KETAL COMPOUNDS-SEGETIS Serbia
  • PLASTICIZER BLENDS OF KETAL COMPOUNDS-SEGETIS Serbia
  • How are ketal-diester derivatives synthesized?
  • The molecules were synthesized by a selective protecting-group-free route, which was developed in order to produce valuable asymmetrical ketal–diester derivatives from the renewable levulinic acid, overcoming the typical drawbacks of these types of reactions.
  • Are ketal-diester additives better than plasticizers?
  • Importantly, when compared to commercial plasticizers such as di-2-ethylhexyl phthalate (DEHP), 1,2-cyclohexane dicarboxylic acid diisononyl ester (Hexamoll DINCH), acetyl tributyl citrate (ATBC), and diethylhexyl adipate (DEHA), the proposed ketal–diester additives performed comparably and, in some cases, even better.
  • Who are the authors of bioplasticizers based on levulinic acid?
  • Alessandro Sinisi, Micaela Degli Esposti, Simona Braccini, Federica Chiellini, Susana Guzman-Puyol, José Alejandro Heredia-Guerrero, Davide Morselli, Paola Fabbri. Levulinic acid-based bioplasticizers: a facile approach to enhance the thermal and mechanical properties of polyhydroxyalkanoates.
  • Are ketal-diester additives compatible with poly (vinyl chloride)?
  • These ketal–diester additives were then tested in poly (vinyl chloride) (PVC) as the model polymer. Their compatibility and plasticizing effect were evaluated by scanning electron microscopy (SEM), differential scanning calorimetry (DSC), dynamic-mechanical thermal analysis (DMTA), and thermogravimetric analysis (TGA).
  • Do ketal-ester additives reduce glass transition temperature?
  • The emerged trend showed a clear correlation between the structural features of the ketal–ester and the thermal and mechanical properties of the material. In particular, the best results in terms of glass transition temperature reduction were achieved when the isobutyl- and benzyl-terminated additives were used.

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