Diffusion of plasticizers in rubbery poly(vinyl chloride

  • Diffusion of plasticizers in rubbery poly(vinyl chloride
  • Diffusion of plasticizers in rubbery poly(vinyl chloride
  • Diffusion of plasticizers in rubbery poly(vinyl chloride
  • What is the diffusion coefficient of a plasticizer in PVC?
  • In contrast, our study examines directly the diffusion of a plasticizer within the PVC. The Kim et al. (60) experimental study found the diffusion coefficient of PVC plasticized with 40 wt % DEHP at 40 °C to be 4.77 × 10 –10 or 5.75 × 10 –10 m 2 /s depending on the solvent in which the PVC was submerged.
  • What are alternative plasticizers for polyvinyl chloride (PVC)?
  • Environmental and toxicity concerns dictate replacement of di (2-ethylhexyl) phthalate (DEHP) plasticizer used to impart flexibility and thermal stability to polyvinyl chloride (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).
  • Is there a bio-based plasticizer for poly (vinyl chloride)?
  • Feng G, Hu L, Ma Y, Jia P, Hu Y, Zhang M, Liu C, Zhou Y (2018) An efficient bio-based plasticizer for poly (vinyl chloride) from waste cooking oil and citric acid: synthesis and evaluation in PVC films.
  • How does plasticizer content affect the diffusivity of polymers?
  • With increase in the plasticizer content of polymers, the glass transition temperature is reduced, which increases the free volume of the polymer and ultimately the diffusivity of the plasticizers ( Aziz et al., 2018; Joubert et al., 2002; Mauritz et al., 1990; Tsai and Chiu, 2022; Wei et al., 2019 ).
  • How does temperature affect the diffusion of plasticizers?
  • The diffusion of plasticizers from PVC to surrounding media increases with temperature. In polymers, diffusion is an activated process. As the temperature is increased, the diffusion coefficient increases, indicative of a positive activation energy for diffusion.
  • Is polyvinylchloride plasticized with a natural polymeric plasticizer?
  • da Silva MA, Vieira MGA, Maçumoto ACG, Beppu MM (2011) Polyvinylchloride (PVC) and natural rubber films plasticized with a natural polymeric plasticizer obtained through polyesterification of rice fatty acid. Polym Testing 30:478–484

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