good stability dbs plasticizer dbs plasticizer Brazil

  • good stability dbs plasticizer dbs plasticizer Brazil
  • good stability dbs plasticizer dbs plasticizer Brazil
  • good stability dbs plasticizer dbs plasticizer Brazil
  • Is DBS a good plasticizer for PVC?
  • DBS was the only plasticizer to consistently lower the G ( T) of PVC as well as or better than DEHP. 1-4-BDB continued to exhibit anomalous behavior that suggested an inability to plasticize PVC (at least at this concentration). Predicted shear modulus for PVC plasticized with DEHP, DBS, DHS, DEA, and 1,4-BDB at temperatures from 150 to 500 K.
  • Can DBS replace DEHP as a plasticizer?
  • Furthermore, both DBS and DHS have been shown to be nontoxic while DHS is biodegradable and can be sourced from renewable feedstock. This leads us to conclude that DHS and DBS are excellent candidates for replacing DEHP as a plasticizer.
  • Does DBS increase the flexibility of PVC?
  • We expected DBS to substantially increase the flexibility of PVC due to its two aromatic rings whose polarity increases the interaction with the PVC backbone. Indeed DBS and DHS were the only plasticizers that lead to a lower Young’s modulus than DEHP at room temperature (∼298 K). (15)
  • Can DBS be used as a plasticizer for ethyl cellulose?
  • DBS is frequently used as a plasticizer for ethyl cellulose, and Eudragits based formulations due to their high compatibilities.
  • Can bio-based plasticizers compete with DEHP in PVC?
  • Potential alternatives to DEHP in PVC include diheptyl succinate (DHS), diethyl adipate (DEA), 1,4-butanediol dibenzoate (1,4-BDB), and dibutyl sebacate (DBS). To examine whether that these bio-based plasticizers can compete with DEHP, we need to compare their tensile, mechanical, and diffusional properties.
  • Do plasticizers deteriorate the thermal stability of plasticized PVC?
  • When plasticized samples were subjected to the same temperature ramp, dramatic differences were observed compared to the above results for the plasticizers alone. Unplasticized PVC was stable up to 212 °C, whereas the addition of plasticizers deteriorated its thermal stability to some extent for every plasticizer studied.

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