Evaporation kinetics of DIDP plasticizer from PVC - NASA/ADS
As expected for thin PVC films, the overall loss kinetics obeys a first order law, indicating that it is controlled by DIDP evaporation. The corresponding coefficient of DIDP evaporation obeys an Arrhenius law with an activation energy of about 96 kJ mol -1.
Evaporation kinetics of DIDP plasticizer from PVC - AIP Publishing
As expected for thin PVC films, the overall loss kinetics obeys a first order law, indicating that it is controlled by DIDP evaporation. The corresponding coefficient of DIDP evaporation obeys an Arrhenius law with an activation energy of about 96 kJ mol 1.
Plasticiser loss from plastic or rubber products through diffusion and
Due to the formation of the plasticiser film, the kinetics of plasticiser loss for a strongly evaporation-controlled process is essentially independent of the polymerplasticiser interactions,...
Evaporation kinetics of DIDP plasticizer from PVC | Request PDF
As expected for thin PVC films, the overall loss kinetics obeys a first order law, indicating that it is controlled by DIDP evaporation. The corresponding coefficient of DIDP...
Evaporative loss kinetics of di(2-ethylhexyl)phthalate (DEHP)
Evaporation kinetics of DIDP plasticizer from PVC Fatma Djouani, I. Mkacher, X. Colin, Y. Brument, Antonella Cristiano-Tassi Materials Science 2014 The physical loss of diisodecyl phthalate (DIDP) plasticizer from PVC films of about 50 μm thickness has been investigated between 95 and 160°C in air by FTIR spectrophotometry and gravimetry.… 2
- What is the evaporation rate of plasticiser?
- Second, the plasticiser evaporation rate from polymer surfaces is similar (on the same order of magnitude) as the rate from their pure liquid state, indicating that the constant plasticiser concentration on the surface is close to that in the pure liquid (100%).
- What is the evaporation rate of diisodecyl phthalate (DIDP) from PVC?
- Linde and Gedde 31 reported that the evaporation rate of diisodecyl phthalate (DIDP) from PVC was 0.06 mg h −1 cm −2 at 120 °C, which is slightly higher than the rate for pure DIDP, (0.04 mg h −1 cm −2).
- Does evaporation affect plasticiser loss rate?
- First, there is the case where the plasticiser loss rate is constant, at least over a certain time-period (observed as the linear loss as a function of time at 90 °C in Fig. 4b), meaning that the loss is strongly limited by the evaporation process.
- What is the evaporation rate of PVC plasticized with di-2-ethylhexyl phthalate?
- For PVC plasticized with di- (2-ethylhexyl) phthalate (DEHP), the evaporation rate at DEHP concentrations above 10 wt.% was found to be constant with time in this temperature regime, i.e. independent of plasticizer concentration , .
- How can plasticizer evaporation be mimicked?
- The process can be mimicked by studying the evaporation from pristine plasticizer in controlled experiments such asthermogravimetry. The activation energy of the plasticizer migration rate was found to be equal to the enthalpy of evaporation of DEHP .
- What is evaporation-controlled and diffusion-controlled plasticiser?
- The loss is either diffusion- or evaporation-controlled, where the former usually occurs at high temperatures and the latter at low temperatures. In the evaporation-controlled mode, a film of plasticiser is often formed at the surface, which is indicated by a linear loss with time, at least over a certain time period.
